The Lineal Formula & Champions

In this day and age it is less likely to find the man who beats the man as in former years due to the fact that there are 17 weight divisions, not eight as in years gone by, and at least four champions in every class. With men moving up in weight on a regular basis few stay in the same lighter divisions for long. One of the biggest problems since the mid-1960s is that the bodies themselves will often not allow their champions to take on another organisation’s champion.

 

Because the majority of us want one champion per weight division, I have devised the following formula (see below) which picks up the leading men who were/are prepared to fight the best. The ratings I have used are those of The Ring from April 1928, unless stated otherwise. Any boxer who has announced his retirement or confirmed that he will be fighting in another weight division will not be taken into account. Also, if a lineal champion fails to meet a top-five rated opponent for two years or more and there are others who have already qualified or in the process of qualifying he forfeits the lineal title, as are those who are suspended for drug taking. If there is no world champion in place, the following applies.

 

Prior to 1965

1/Top rated versus number 2

2/Unification of at least two versions of the title

1966 to 1982 inclusive, due to the WBA and WBC splitting the title
1/Top rated versus number 2 or 3

2/Unification of at least two versions of the title

1983 to 1988 inclusive, taking into account the IBF being formed
1/Top rated versus number 2, 3 or 4 

2/Unification of at least two versions of the title

1989 to 2012 inclusive, taking into account the WBO being formed
1/Top rated versus number 2, 3, 4 or 5

2/Unification of at least two versions of the title
 
2013 onwards due to many of the top-rated men failing to take on opponents inside the top five

1/Top rated versus number 2, 3, 4 or 5

2/Number 2 versus 3 when the top-rated man fails to meet his leading challengers and continues to fight opponents outside the top five

3/Unification of at least two versions of the title


 
​Heavyweight (initially in excess of 158lbs, now 200lbs +)


James J. Corbett (7/9/1892 – 17/3/1897)

When Corbett beat John L. Sullivan he was acclaimed universally as the champion, having already fought a draw against the great black fighter, Peter Jackson 
Bob Fitzsimmons (17/3/1897 – 9/6/1899)
James J. Jeffries (9/6/1899 – 15/5/1905)
Jeffries retired only to come back to meet Jack Johnson on 4 July 1910
Tommy Burns (2/12/1907 – 26/12/1908)

Burns unified the title on beating the British champion, Gunner Moir
Jack Johnson (26/12/1908 – 5/4/1915)
Jess Willard (5/4/1915 – 4/7/1919)
Jack Dempsey (4/7/1919 – 23/9/1926) 
Gene Tunney (23/9/1926 – 31/7/1928)

Tunney retired
Max Schmeling (12/6/1930 – 21/6/1932)

Schmeling (2) beat Jack Sharkey (1) 
Jack Sharkey (21/6/1932 – 29/6/1933)
Primo Carnera (29/6/1933 – 14/6/1934)
Max Baer (14/6/1934 – 13/6/1935)
Jim Braddock (13/6/1935 – 22/6/1937)
Joe Louis (22/6/1937 – 28/2/1949)

Louis announced his retirement before changing his mind and coming back to fight Ezzard Charles on 27 September 1950
Ezzard Charles (22/6/1949 – 18/7/1951)

Charles (1) beat Jersey Joe Walcott (2) 
Jersey Joe Walcott (18/7/1951 – 23/9/1952)
Rocky Marciano (23/9/1952 – 27/4/1956)

Marciano retired
Floyd Patterson (30/11/1956 – 26/6/1959)

Patterson (2) beat Archie Moore (1)
Ingemar Johansson (26/6/1959 – 20/6/1960)
Floyd Patterson (20/6/1960 – 25/9/1962)
Sonny Liston (25/9/1962 – 25/2/1964) 
Cassius Clay [Muhammad Ali] (25/2/1964 – 16/1/1970)

Ali retired before being eventually relicensed and beaten by Joe Frazier on 8 March 1971  
Joe Frazier (16/2/1970 – 22/1/1973)

Frazier (1) beat Jimmy Ellis (3)
George Foreman (22/1/1973 – 30/10/1974)
Muhammad Ali (30/10/1974 – 15/2/1978)
Leon Spinks (15/2/1978 – 15/9/1978)
Muhammad Ali (15/9/1978 – 27/6/1979)

Ali retired
Larry Holmes (28/9/1979 – 21/9/1985)

Holmes (1) beat Earnie Shavers (3) 
Michael Spinks (21/9/1985 – 27/6/1988)
Mike Tyson (27/6/1988 – 11/2/1990) 
James Buster Douglas (11/2/1990 – 25/10/1990)
Evander Holyfield (25/10/1990 – 13/11/1992)
Riddick Bowe (13/11/1992 – 6/11/1993)
Evander Holyfield (6/11/1993 – 22/4/1994)
Michael Moorer (22/4/1994 – 5/11/1994)
George Foreman (5/11/1994 – 5/11/1996)

Foreman forfeited title for not meeting a top five opponent for two years

Evander Holyfield (9/11/1996 - 13/11/1999)

Holyfield (5) beat Mike Tyson (1)
Lennox Lewis (13/11/1999 – 22/4/2001)
Hasim Rahman (22/4/2001 – 17/11/2001)
Lennox Lewis (17/11/2001 – 6/2/2004)

Lewis retired
Vitali Klitschko (24/4/2004 – 8/11/2005)

Klitschko (1) beat Corrie Sanders (3) 
Klitschko retired before coming back to win the WBC title on 11 October 2008
Wladimir Klitschko (23/2/2008 – 28/11/2015)

Klitschko unified the IBF/WBO titles on beating Sultan Ibragimov
Tyson Fury (28/11/2015 – 13/10/2016)
Fury suspended from boxing due to drug related charges
Anthony Joshua (29/4/2017 – 1/6/2019)

Joshua unified the IBF/WBA titles when beating Wladimir Klitschko

Andy Ruiz (1/6/2019 -


 
Cruiser (started life at 190lbs, now 200lbs)
 

Carlos De Leon (24/2/1982 – 27/6/1982) 

De Leon (1) beat Marvin Camel (2) BNews

S. T. Gordon (27/6/1982 - 17/7/1983)

Carlos De Leon (17/7/1983 - 6/6/1985)
Alfonzo Ratliff (6/6/1985 – 21/9/1985)
Bernard Benton (21/9/1985 – 22/3/1986)
Carlos De Leon (22/3/1986 – 9/4/1988)
Evander Holyfield (9/4/1988 – 9/12/1988)

Holyfield moved up in weight
Orlin Norris (4/3/1994 – 22/7/1995)

Norris (1) beat Arthur Williams (4)
Nate Miller (22/7/1995 – 8/11/1997)
Fabrice Tiozzo (8/11/1997 – 9/12/2000)
Virgil Hill (9/12/2000 – 23/2/2002) 
Jean-Marc Mormeck (23/2/2002 – 7/1/2006) 
O’Neil Bell (7/1/2006 – 17/3/2007)
Jean-Marc Mormeck (17/3/2007 – 10/11/2007)
David Haye (10/11/2007 – 22/7/2008)

Haye moved up in weight
Tomasz Adamek (11/12/2008 – 18/10/2009)

Adamek (2) defeated Steve Cunningham (1)
Adamek moved up in weight
Steve Cunningham (5/6/2010 – 1/10/2011)

Cunningham (1) beat Troy Ross (5)
Yoan Pablo Hernandez (1/10/2011 – 24/11/2015)
Hernandez failed to meet a top-five rated opponent for over two years

Denis Lebedev (21/5/2016 – 3/12/2016))

Lebedev unified the IBF/WBA titles when beating Victor Emilio Ramirez

Murat Gassiev (3/12/2016 – 21/7/2018)
Oleksandr Usyk (21/7/2018 – 15/6/2019)

Usyk moved up to heavyweight

Light Heavy (175lbs)


Georges Carpentier (12/10/1920 – 24/9/1922)

Carpentier became the division’s first universally recognised champion on beating Battling Levinsky 
Battling Siki (24/9/1922 – 17/3/1923)
Mike McTigue (17/3/1923 – 30/5/1925)
Paul Berlenbach (30/5/1925 – 16/7/1926)
Jack Delaney (16/7/1926 – 10/8/1927)

Delaney moved up in weight
Tommy Loughran (12/12/1927 – 3/9/1929)

Loughran, the NY champion, beat the NBA’s Jimmy Slattery to gain universal recognition 
Loughran moved up in weight 
Maxie Rosenbloom (25/6/1930 – 16/11/1934)

Rosenbloom (1) beat Jimmy Slattery (2) 
Bob Olin (16/11/1934 – 31/10/1935)
John Henry Lewis (31/10/1935 – 19/6/1939)

Lewis retired
Billy Conn (13/7/1939 – 3/6/1941)

Conn (2) beat Melio Betina (1). John Henry Lewis removed from listing, having been banned from boxing on 19 June 
Conn moved up in weight
Gus Lesnevich (26/8/1941 – 26/7/1948)

Lesnevich beat Tami Mauriello to unify the NBA/NY titles 
Freddie Mills (26/7/1948 – 24/1/1950)
Joey Maxim (24/1/1950 – 17/12/1952)
Archie Moore (17/12/1952 – 9/2/1962)

Moore moved up in weight
Harold Johnson (12/5/1962 – 1/6/1963)

Johnson beat Doug Jones to unify the NBA/NY titles 
Willie Pastrano (1/6/1963 – 30/3/1965)
Jose Torres (30/3/1965 – 16/12/1966)
Dick Tiger (16/12/1966 – 24/5/1968)
Bob Foster (24/5/1968 – 16/9/1974)

Foster retired
John Conteh (1/10/1974 – 17/6/1978)

Conteh (2) beat Jorge Ahumada (1) 
Mate Parlov (17/6/1978 – 2/12/1978)
Marvin Johnson (2/12/1978 – 22/4/1979)
Matthew Saad Muhammad (22/4/1979 – 19/12/1981)
Dwight Braxton [Dwight Muhammad Qawi] (19/12/1981 – 18/3/1983)
Michael Spinks (18/3/1983 – 3/11/1985)

Spinks moved up in weight

Thomas Hearns (3/6/1991 – 20/3/1992)

Hearns (3) beat Virgil Hill (1)
Iran Barkley (20/3/1992 – 10/4/1992)
Barkley moved down to super middle
Virgil Hill (23/11/1996 – 13/6/1997) 

Hill (2) beat Henry Maske (1)
Dariusz Michalczewski (13/6/1997 – 13/6/1999)

Michalczewski failed to meet a top-five rated opponent for two years
Roy Jones (13/6/1999 - 15/5/2004)

Jones had already unified the IBF/WBA/WBC titles

Antonio Tarver (15/5/2004 - 18/12/2004)

Glen Johnson (18/12/2004 - 18/6/2005)

Antonio Tarver (18/6/2005 – 10/6/2006)

Bernard Hopkins (10/6/2006 – 19/4/2008)

Joe Calzaghe (19/4/2008 – 5/2/2009)

Calzaghe retired

Jean Pascal (14/8/2010 – 21/5/2011)

Pascal (3) beat Chad Dawson (1) 
Bernard Hopkins (21/5/2011 – 28/4/2012)
Chad Dawson (28/4/2012 – 8/6/2013)
Adonis Stevenson (8/6/2013 – 24/11/2015)

Stevenson failed to meet a top-five rated opponent for over two years

Sergey Kovalev (24/11/2015 – 19/11/2016) 

Kovalev had already unified the IBF/WBA/WBO titles

Andre Ward (19/11/2016 – 21/9/2017)

Ward retired

Eleider Alvarez (4/8/2018 – 2/2/2019)

Alvarez (5) beat Sergey Kovalev (1)

Sergey Kovalev (2/2/2019 – 2/11/2019)

Saul Alvarez (2/11/2019 –


 

Super Middle (168lbs)
 

Chong-Pal Park (6/12/1987 - 23/5/1988)

Park unified the IBF/WBA titles

Fulgencio Obelmejias (23/5/1988 - 28/5/1989)

In-Chul Baek (28/5/1989 - 30/3/1990)

Christophe Tiozzo (30/3/1990 - 5/4/1991)

Victor Cordoba (5/4/1991 - 12/9/1992)

Michael Nunn (12/9/1992 – 26/2/1994)

Steve Little (26/2/1994 – 12/8/1994)
Frankie Liles (12/8/1994 – 12/6/1999)
Byron Mitchell (12/6/1999 – 8/4/2000)
Bruno Girard (8/4/2000 – 3/3/2001)

Girard moved up in weight

Sven Ottke (15/3/2003 - 27/3/2004)

Ottke unified the IBF/WBA titles on beating Byron Mitchell

Ottke retired on 27 March 2004
Joe Calzaghe (4/3/2006 – 26/9/2008)

Calzaghe (1) beat Jeff Lacy (3)
Calzaghe moved up in weight
Andre Ward (17/12/2011 – 19/2/2015)

Ward (1) beat Carl Froch (2)
Ward moved up in weight 

Arthur Abraham (18/7/2015 - 9/4/2016)

Abraham (1) beat Robert Stieglitz (4)

Gilberto Ramirez (9/4/2016 - 28/9/2018)

Ramirez failed to meet a top-five rated opponent for over two years

Callum Smith (28/9/2018 -

Smith (3) beat George Groves (1)
 


Middle (160lbs)

 

Johnny Wilson (17/3/1921 – 31/8/1923)

Wilson became the first undisputed champion at 160lbs on defeating Mike O’Dowd 
Harry Greb (31/8/1923 – 26/2/1926)
Tiger Flowers (26/2/1926 – 3/12/1926)
Mickey Walker (3/12/1926 – 19/6/1931)

Walker moved up in weight
Marcel Thil (11/6/1932 – 23/9/1937)

Thil beat Gorilla Jones to unify the IBU/NBA titles 
Fred Apostoli (23/9/1937 – 2/10/1939)
Ceferino Garcia (2/10/1939 – 23/5/1940)
Ken Overlin (23/5/1940 – 9/5/1941)
Billy Soose (9/5/1941 – 31/10/1941)

Soose moved up in weight
Tony Zale (28/11/1941 – 16/7/1947)

Zale (1) beat Georgie Abrams (2) 
Rocky Graziano (16/7/1947 – 10/6/1948)
Tony Zale (10/6/1948 – 21/9/1948)
Marcel Cerdan (21/9/1948 – 16/6/1949)
Jake LaMotta (16/6/1949 – 14/2/1951)
Sugar Ray Robinson (14/2/1951 – 10/7/1951)
Randy Turpin (10/7/1951 – 12/9/1951)
Sugar Ray Robinson (12/9/1951 – 19/12/1952)

Robinson took time away from boxing with a view to retirement before coming back in 1955 and eventually regaining the title 
Carl Bobo Olson (21/10/1953 – 9/12/1955)

Olson (2) beat Randy Turpin (1)  
Sugar Ray Robinson (9/12/1955 – 2/1/1957)
Gene Fullmer (2/1/1957 – 1/5/1957)
Sugar Ray Robinson (1/5/1957 – 23/9/1957)
Carmen Basilio (23/9/1957 – 25/3/1958)
Sugar Ray Robinson (25/3/1958 – 22/1/1960)
Paul Pender (22/1/1960 – 11/7/1961)
Terry Downes (11/7/1961 – 7/4/1962)
Paul Pender (7/4/1962 – 7/5/1963)

Pender retired
Dick Tiger (10/8/1963 – 7/12/1963)

Tiger (1) beat Gene Fullmer (2) 
Joey Giardello (7/12/1963 – 21/10/1965)
Dick Tiger (21/10/1965 – 25/4/1966)
Emile Griffith (25/4/1966 – 17/4/1967)
Nino Benvenuti (17/4/1967 – 29/9/1967)
Emile Griffith (29/9/1967 – 4/3/1968)
Nino Benvenuti (4/3/1968 – 7/11/1970)
Carlos Monzon (7/11/1970 – 29/8/1977)

Monzon retired
Rodrigo Valdez (5/11/1977 – 22/4/1978)

Regardless that Mike Colbert was the number one contender, Valdez (2), supported by the WBC, beat the WBA’s Bennie Briscoe (3) to receive universal recognition 
Hugo Corro (22/4/1978 – 30/6/1979)
Vito Antuofermo (30/6/1979 – 16/3/1980)
Alan Minter (16/3/1980 – 27/9/1980)
Marvin Hagler (27/9/1980 – 6/4/1987)
Sugar Ray Leonard (6/4/1987 – 27/6/1987)

Leonard moved up in weight
Michael Nunn (25/3/1989 – 10/5/1991)

Nunn (2) beat Sumbu Kalambay (1) 
James Toney (10/5/1991 – 13/2/1993)
Toney moved up in weight
Jorge Castro (10/12/1994 – 19/12/1995)

Castro (3) beat John David Jackson (1). Gerald McClellan was effectively already up at super middle
Shinji Takehara (19/12/1995 – 24/6/1996)
William Joppy (24/6/1996 – 23/8/1997)
Julio Cesar Green (23/8/1997 – 31/1/1998)
William Joppy (31/1/1998 – 12/5/2001)
Felix Trinidad (12/5/2001 – 29/9/2001)
Bernard Hopkins (29/9/2001 – 16/7/2005) 
Jermain Taylor (16/7/2005 – 29/9/2007)
Kelly Pavlik (29/9/2007 – 17/4/2010)
Sergio Martinez (17/4/2010 – 7/6/2014)
Miguel Cotto (7/6/2014 – 21/11/2015)
Saul Alvarez (21/11/2015 – 18/4/2018)

Alvarez suspended by the Nevada State Boxing Commission after failing two drug tests

Gennady Golovkin (18/4/2018 – 15/9/2018)

Golovkin had already unified the IBF/WBA/WBC titles

Saul Alvarez (15/9/2018 –


Junior Middle (154lbs)
 

Sandro Mazzinghi (17/9/1964 - 18/6/1965)

Mazzinghi recognised by both the WBC and WBA as champion

Nino Benvenuti (18/6/1965 - 25/6/1966)

Ki-Soo Kim (25/6/1966 - 26/5/1968)

Sandro Mazzinghi (26/5/1968 - 30/11/1968)

Mazzinghi moved up in weight

Freddie Little (17/3/1969 - 9/7/1970)

Carmelo Bossi (9/7/1970 - 31/10/1971)

Koichi Wajima (31/10/1971 - 4/6/1974)
Oscar Albarado (4/6/1974 – 21/1/1975) 

Koichi Wajima (21/1/1975 – 7/6/1975)
Jae-Doo Yuh (7/6/1975 – 17/2/1976)
Koichi Wajima (17/2/1976 – 18/5/1976)
Jose Manuel Duran (18/5/1976 – 8/10/1976)
Miguel Castellini (8/10/1976 – 5/3/1977)
Eddie Gazo (5/3/1977 – 9/8/1978)
Masashi Kudo (9/8/1978 – 24/10/1979)
Ayub Kalule (24/10/1979 – 25/6/1981)
Sugar Ray Leonard (25/6/1981 – 22/9/1981)

Leonard moved down to welter
Thomas Hearns (3/12/1982 – 28/9/1986)

Hearns (2) beat Wilfred Benitez (1)
Hearns moved up in weight
Duane Thomas (5/12/1986 – 12/7/1987)

Thomas (4) beat John Mugabi (1)
Lupe Aquino (12/7/1987 – 2/10/1987)
Gianfranco Rosi (2/10/1987 – 8/7/1988)
Donald Curry (8/7/1988 – 11/2/1989)
Rene Jacquot (11/2/1989 – 8/7/1989) 
John Mugabi (8/7/1989 – 31/3/1990)
Terry Norris (31/3/1990 – 18/12/1993)
Simon Brown (18/12/1993 – 7/5/1994)
Terry Norris (7/5/1994 – 12/11/1994)
Luis Santana (12/11/1994 – 19/8/1995)
Terry Norris (19/8/1995 – 6/12/1997)
Keith Mullings (6/12/1997 – 29/1/1999)
Javier Castillejo (29/1/1999 – 23/6/2001)
Oscar De La Hoya (23/6/2001 – 13/9/2003)
Shane Mosley (13/9/2003 – 13/3/2004)
Ronald Wright (13/3/2004 – 25/4/2005)

Wright moved up in weight

Saul Alvarez (20/4/2013 – 14/9/2013)

Alvarez (2) beat Austin Trout (3) to become The Ring champion
Floyd Mayweather Jnr (14/9/2013 – 13/9/2015)
Mayweather retired​

Jarrett Hurd (7/4/2018 – 11/5/2019

Hurd (3) beat Erislandy Lara (1)

Julian Williams (11/5/2019 -

 

Welter (147lbs)


Jack Britton (7/2/1921 – 1/11/1922)

Britton was seen as the undisputed champion at 147lbs, having finally put paid to Ted Kid Lewis 
Mickey Walker (1/11/1922 – 20/5/1926)
Pete Latzo (20/5/1926 – 3/6/1927)
Joe Dundee (3/6/1927 – 25/7/1929)
Jackie Fields (25/7/1929 – 9/5/1930)
Young Jack Thompson (9/5/1930 – 5/9/1930)
Tommy Freeman (5/9/1930 – 14/4/1931)
Young Jack Thompson (14/4/1931 – 23/10/1931)
Lou Brouillard (23/10/1931 – 28/1/1932)
Jackie Fields (28/1/1932 – 22/2/1933)
Young Corbett 111 (22/2/1933 – 29/5/1933)
Jimmy McLarnin (29/5/1933 – 28/5/1934)
Barney Ross (28/5/1934 – 17/9/1934)
Jimmy McLarnin (17/9/1934 – 28/5/1935)
Barney Ross (28/5/1935 – 31/5/1938)
Henry Armstrong (31/5/1938 – 4/10/1940)
Fritzie Zivic (4/10/1940 – 29/7/1941)
Freddie Cochrane (29/7/1941 – 1/2/1946)
Marty Servo (1/2/1946 – 25/9/1946)

Servo retired
Sugar Ray Robinson (20/12/1946 – 14/3/1951)

Robinson became the undisputed champion on beating Tommy Bell
Robinson moved up to middleweight
Kid Gavilan (18/5/1951 – 20/10/1954)

Gavilan beat Johnny Bratton to unify the NBA/NY titles
Johnny Saxton (20/10/1954 – 1/4/1955)
Tony DeMarco (1/4/1955 – 10/6/1955)
Carmen Basilio (10/6/1955 – 14/3/1956)
Johnny Saxton (14/3/1956 – 12/9/1956)
Carmen Basilio (12/9/1956 – 23/9/1957)

Basilio moved up in weight
Virgil Akins (6/6/1958 – 5/12/1958)

Akins (1) beat Vince Martinez (2) 
Don Jordan (5/12/1958 – 27/5/1960)
Benny Kid Paret (27/5/1960 – 1/4/1961)
Emile Griffith (1/4/1961 – 30/9/1961)
Benny Kid Paret (30/9/1961 – 24/3/1962)
Emile Griffith (24/3/1962 – 21/3/1963)
Luis Rodriguez (21/3/1963 – 8/6/1963)
Emile Griffith (8/6/1963 – 2/8/1966)

Griffith moved up in weight
Curtis Cokes (28/11/1966 – 18/4/1969)

Cokes (1) beat Jean Josselin (2)
Jose Napoles (18/4/1969 – 3/12/1970)
Billy Backus (3/12/1970 – 4/6/1971)
Jose Napoles (4/6/1971 – 6/12/1975)
John H. Stracey (6/12/1975 – 22/6/1976)
Carlos Palomino (22/6/1976 – 14/1/1979)
Wilfred Benitez (14/1/1979 – 30/11/1979)
Sugar Ray Leonard (30/11/1979 – 20/6/1980)
Roberto Duran (20/6/1980 – 25/11/1980)
Sugar Ray Leonard (25/11/1980 – 9/11/1982)

Leonard moved up in weight
Donald Curry (5/11/1983 – 27/9/1986)

Curry unified WBA/IBF titles
Lloyd Honeghan (27/9/1986 – 28/10/1987)
Jorge Vaca (28/10/1987 – 29/3/1988)
Lloyd Honeyghan (29/3/1988 – 4/2/1989)
Marlon Starling (4/2/1989 – 19/8/1990)
Maurice Blocker (19/8/1990 – 18/3/1991)
Simon Brown (18/3/1991 – 29/11/1991)
Buddy McGirt (29/11/1991 – 6/3/1993)
Pernell Whitaker (6/3/1993 – 12/4/1997)
Oscar De La Hoya (12/4/1997 – 18/9/1999)
Felix Trinidad (18/9/1999 – 3/3/2000)

Trinidad moved up in weight
Shane Mosley (17/6/2000 – 26/1/2002)

Mosley (3) beat Oscar De La Hoya (1)  
Vernon Forrest (26/1/2002 – 25/1/2003)
Ricardo Mayorga (25/1/2003 – 13/12/2003)
Cory Spinks (13/12/2003 – 5/2/2005)
Zab Judah (5/2/2005 – 7/1/2006)
Carlos Baldomir (7/1/2006 – 4/11/2006)
Floyd Mayweather Jnr (4/11/2006 – 6/6/2008)

Mayweather temporarily retired only to come back on 19 September 2009
Antonio Margarito (26/7/2008 – 24/1/2009)

Margarito (4) beat Miguel Cotto (1)
Shane Mosley (24/1/2009 – 1/5/2010)
Floyd Mayweather Jnr (1/5/2010 – 13/9/2015)

Mayweather retired
Keith Thurman (4/3/2017 - 20/7/2019)

Thurman beat Danny Garcia to unify the WBA/WBC titles

Manny Pacquiao (20/7/2019 -
 


Junior Welter (140lbs)

 

Tony Canzoneri (10/9/1931  18/1/1932

Canzoneri (1) beat Jack Kid Berg (2)

Johnny Jadick (18/1/1932  20/2/1933)

Battling Shaw (20/2/1933  21/5/1933)

Tony Canzoneri (21/5/1933  23/6/1933)

Barney Ross (23/6/1933  15/4/1935)

Ross moved up in weight

Carlos Ortiz (12/6/1959 – 1/9/1960)

Ortiz beat Kenny Lane to unify the NY/NBA titles
Duilio Loi (1/9/1960 – 14/9/1962)
Eddie Perkins (14/9/1962 – 15/12/1962)
Duilio Loi (15/12/1962 – 24/1/1963)
Loi retired
Eddie Perkins (1/1/1965 – 18/1/1965)

Perkins, the WBA champion, was recognised by the WBC

Carlos Hernandez (18/1/1965 – 29/4/1966)

Sandro Lopopolo (29/4/1966 – 30/4/1967)
Paul Fujii (30/4/1967 – 12/12/1968)
Nicolino Locche (12/12/1968 – 10/3/1972)
Alfonso Frazer (10/3/1972 – 28/10/1972)
Antonio Cervantes (28/10/1972 – 6/3/1976)
Wilfred Benitez (6/3/1976 – 25/8/1978)

Benitez moved up in weight
Antonio Cervantes (18/1/1979 – 2/8/1980)

Cervantes beat Miguel Montilla to unify NY/WBA titles
Aaron Pryor (2/8/1980 – 31/12/1985)
Pryor moved up in weight
Julio Cesar Chavez (17/3/1990 – 29/1/1994)

Chavez (1) beat Meldrick Taylor (2)
Frankie Randall (29/1/1994 – 7/5/1994)
Julio Cesar Chavez (7/5/1994 – 7/6/1996)
Oscar De La Hoya (7/6/1996 – 12/4/1997)

De La Hoya moved up in weight
Kostya Tszyu (3/2/2001 – 4/6/2005)

Tszyu (1) beat Sharmba Mitchell (3)
Ricky Hatton (4/6/2005 – 2/5/2009)
Manny Pacquiao (2/5/2009 – 26/7/2010)

Pacquiao moved up in weight
Devon Alexander (26/7/2010 – 29/1/2011)

Alexander had earlier unified the IBF/WBC titles
Timothy Bradley (29/1/2011 – 27/6/2012)
Bradley moved up in weight
Danny Garcia (14/7/2012 – 11/9/2015)

Garcia beat Amir Khan to unify the WBA/WBC titles
Garcia moved up in weight
Terence Crawford (23/7/2016 – 29/1/2018)

Crawford (2) beat Viktor Postol (1)

Crawford moved up in weight
Regis Prograis (27/4/2019 – 26/10/2019)

Prograis (1) beat Kiryl Relikh (4)

Josh Taylor (26/10/2019  –


 


Light (135lbs)


Freddie Welsh (7/7/1914 – 28/5/1917)

Welsh beat Willie Ritchie to unify the division
Benny Leonard (28/5/1917 – 15/1/1925)
Leonard retired
Rocky Kansas (7/12/1925 – 3/7/1926)

Kansas beat Jimmy Goodrich to unify the NY/NBA/GB versions of the title
Sammy Mandell (3/7/1926 – 17/7/1930)
Al Singer (17/7/1930 – 14/11/1930)
Tony Canzoneri (14/11/1930 – 23/6/1933)
Barney Ross (23/6/1933 – 15/4/1935)

Ross moved up in weight
Tony Canzoneri (10/5/1935 – 3/9/1936)

Canzoneri (2) beat Lou Ambers (1)
Lou Ambers (3/9/1936 – 17/8/1938)
Henry Armstrong (17/8/1938 – 22/8/1939)
Lou Ambers (22/8/1939 – 10/5/1940)
Lew Jenkins (10/5/1940 – 19/12/1941)
Sammy Angott (19/12/1941 – 14/11/1942)

Angott announced his retirement due to hand problems in November 1942, only to come back in March 1943 and eventually regain the NBA title
Bob Montgomery (21/5/1943 – 19/11/1943)

Montgomery (2) beat Beau Jack (1)
Beau Jack (19/11/1943 – 3/3/1944)
Bob Montgomery (3/3/1944 – 4/8/1947)
Ike Williams (4/8/1947 – 25/5/1951)
Jimmy Carter (25/5/1951 – 14/5/1952)
Lauro Salas (14/5/1952 – 15/10/1952)
Jimmy Carter (15/10/1952 – 5/3/1954)
Paddy DeMarco (5/3/1954 – 17/11/1954)
Jimmy Carter (17/11/1954) – 29/6/1955)
Wallace Bud Smith (29/6/1955 – 24/8/1956)
Joe Brown (24/8/1956 – 21/4/1962)
Carlos Ortiz (21/4/1962 – 10/4/1965)
Ismael Laguna (10/4/1965 – 13/11/1965)
Carlos Ortiz (13/11/1965 – 29/6/1968)
Carlos Teo Cruz (29/6/1968 – 18/2/1969)
Mando Ramos (18/2/1969 – 3/3/1970)
Ismael Laguna (3/3/1970 – 26/9/1970)
Ken Buchanan (26/9/1970 – 26/6/1972)
Roberto Duran (26/6/1972 – 3/2/1979)

Duran moved up in weight
Alexis Arguello (20/6/1981 –15/2/1983)

Arguello (3) beat Jim Watt (1). BNews had Arguello a place above Hilmer Kenty in the ratings
Arguello moved up in weight
Livingstone Bramble (1/6/1984 – 26/9/1986)

Bramble (4) beat Ray Mancini (1)
Edwin Rosario (26/9/1986 – 21/11/1987)
Julio Cesar Chavez (21/11/1987 – 13/5/1989)

Chavez moved up in weight 
Pernell Whitaker (20/8/1989 – 22/5/1992)

Whitaker beat Jose Luis Ramirez to unify the IBF/WBC titles
Whitaker moved up in weight 
Miguel Angel Gonzalez (6/8/1994 – 10/2/1996)

Gonzalez (1) beat Leavander Johnson (4)
Gonzalez moved up in weight
Shane Mosley (2/8/1997 – 31/5/1999)

Mosley (5) beat Philip Holiday (1)
Mosley moved up in weight
Stevie Johnston (14/8/1999 – 17/6/2000)

Johnston (1) beat Angel Manfredy (2)
Jose Luis Castillo (17/6/2000 – 20/4/2002)
Floyd Mayweather Jnr (20/4/2002 – 22/5/2004)

Mayweather moved up in weight
Jose Luis Castillo (5/6/2004 – 7/5/2005)

Castillo (2) defeated Juan Lazcano (1)
Diego Corrales (7/5/2005 – 7/10/2006)
Joel Casamayor (7/10/2006 – 13/9/2008)
Juan Manuel Marquez (13/9/2008 – 14/4/2012)

Marquez moved up in weight
Terence Crawford (29/11/2014 – 24/3/2015)

Crawford (1) beat Fernando Beltran (2)
Crawford moved up in weight
Jorge Linares (24/9/2016 – 12/5/2018)

Linares (1) beat Anthony Crolla (3)
Vasyl Lomachenko (12/5/2018 -


Junior Light (130lbs)
 

Johnny Dundee (6/7/1922 – 30/5/1923)

Dundee unified the NY/NBA versions of the title when beating Jackie Sharkey
Jack Bernstein (30/5/1923 – 17/12/1923)
Johnny Dundee (17/12/1923 – 20/6/1924)
Steve Kid Sullivan (20/6/1924 – 1/4/1925)
Mike Ballerino (1/4/1925 – 2/12/1925)
Tod Morgan (2/12/1925 – 20/12/1929)
Benny Bass (20/12/1929 – 15/7/1931)
Kid Chocolate (15/7/1931 – 25/12/1933)
Frankie Klick (25/12/1933 – 5/3/1934)

Klick moved up in weight
Despite the title being claimed by Sandy Saddler between 6/12/1949 to 28/2/1951 he was seen as a featherweight, and although the division resurfaced in 1959 with Harold Gomes it was not taken seriously by The Ring until 19 July 1962
Flash Elorde (5/6/1965 – 15/6/1967)

Elorde unified the WBA/WBC titles when beating Teruo Kosaka
Yoshiaki Numata (15/6/1967 – 14/12/1967)
Hiroshi Kobayashi (14/12/1967 – 29/7/1971)
Alfredo Marcano (29/7/1971 – 25/4/1972)
Ben Villaflor (25/4/1972 – 12/3/1973)
Kuniaki Shibata (12/3/1973 – 17/10/1973)
Ben Villaflor (17/10/1973 – 16/10/1976)
Sam Serrano (16/10/1976 – 2/8/1980)
Yasutsune Uehara (2/8/1980 – 9/4/1981)
Sam Serrano (9/4/1981 – 19/1/1983)
Roger Mayweather (19/1/1983 – 26/2/1984)
Rocky Lockridge (26/2/1984 – 19/5/1985)
Wilfredo Gomez (19/5/1985 – 24/5/1986)
Alfredo Layne (24/5/1986 – 27/9/1986)
Brian Mitchell (27/9/1986 – 25/1/1992)

Mitchell retired
Azumah Nelson (1/3/1992 – 7/5/1994)

Nelson (2) beat Jeff Fenech (1) 
Jesse James Leija (7/5/1994 – 17/9/1994)
Gabriel Ruelas (17/9/1994 – 1/12/1995)
Azumah Nelson (1/12/1995 – 22/3/1997)
Genaro Hernandez (22/3/1997 – 3/10/1998)
Floyd Mayweather Jnr (3/10/1998 – 20/4/2002)

Mayweather moved up in weight
Acelino Freitas (20/4/2002 – 15/1/2004)

Freitas had earlier unified the WBA/WBO titles
Freitas moved up in weight 
Erik Morales (31/7/2004 – 27/11/2004)

Morales unified the IBF/WBC titles when beating Carlos Hernandez 
Marco Antonio Barrera (27/11/2004 – 17/3/2007)
Juan Manuel Marquez (17/3/2007 – 15/3/2008)
Manny Pacquiao (15/3/2008 – 16/7/2008)

Pacquiao moved up in weight 
Mzonke Fana (1/9/2010 – 1/9/2012)

Fana (1) beat Cassius Baloyi (4)
Fana failed to meet a top-five rated opponent for two years

Miguel Berchelt (11/5/2019 -

Berchelt (1) beat Francisco Vargas (4)

 


Feather (126lbs)

 

Eugene Criqui (2/6/1923 – 26/7/1923)

Criqui unified the IBU/WBA titles on beating Johnny Kilbane
Johnny Dundee (26/7/1923 – 20/8/1924)
Dundee moved up in weight
Louis Kid Kaplan (18/12/1925 – 7/7/1926)

Kaplan unified the title on beating Babe Herman
Kaplan moved up in weight
Tony Canzoneri (10/2/1928 – 28/9/1928)

Canzoneri unified the world title when beating Benny Bass
Andre Routis (28/9/1928 – 23/9/1929)
Battling Battalino (23/9/1929 – 27/1/1932)

Battalino moved up in weight
Kid Chocolate (19/5/33 – 17/2/1934)

Chocolate (1) beat Seaman Tommy Watson (2)
Chocolate moved up in weight 
Freddie Miller (20/9/1934 – 11/5/1936)

Miller (1) beat Nel Tarleton (2)
Petey Sarron (11/5/1936 – 29/10/1937)
Henry Armstrong (29/10/1937 – 13/9/1938)

Armstrong moved up in weight
Joey Archibald (18/4/1939 – 20/5/1940)

Archibald unified the world title when defeating Leo Rodak
Harry Jeffra (20/5/1940 – 12/5/1941)
Joey Archibald (12/5/1941 – 11/9/1941)
Chalky Wright (11/9/1941 – 20/11/1942)
Willie Pep (20/11/1942 – 29/10/1948)
Sandy Saddler (29/10/1948 – 11/2/1949)
Willie Pep (11/2/49 – 8/9/1950)
Sandy Saddler (8/9/1950 – 21/1/1957)

Saddler retired
Hogan Kid Bassey (24/6/57 – 18/3/1959)

Bassey (2) beat Cherif Hamia (1)
Davey Moore (18/3/59 – 21/3/1963)
Sugar Ramos (21/3/1963 – 26/9/1964)
Vicente Saldivar (26/9/1964 – 14/10/1967)

Saldivar retired, only to come back and regain his old title 
Johnny Famechon (21/1/1969 – 9/5/1970)

Famechon (2) beat Jose Legra (1) 
Vicente Saldivar (9/5/1970 – 11/12/1970)
Kuniaki Shibata (11/12/1970 – 19/5/1972)
Clemente Sanchez (19/5/1972 – 16/12/1972)
Jose Legra (16/12/1972 – 5/5/1973) 
Eder Jofre (5/5/1973 – 17/6/1974)

Jofre moved up in weight
Ruben Olivares (20/6/1975 – 20/9/1975)

Olivares (3) beat Chacon (1)
David Kotey (20/9/1975 – 6/11/1976)
Danny Lopez (6/11/1976 – 2/2/1980)
Salvador Sanchez (2/2/1980 – 12/8/1982)

Sanchez died
Eusebio Pedroza (24/4/1983 – 8/6/1985)

Pedroza (1) beat Rocky Lockridge (4) 
Barry McGuigan (8/6/1985 – 23/6/1986)
Steve Cruz (23/6/1986 – 6/3/1987)
Antonio Esparragoza (6/3/1987 – 30/3/1991)
Young-Kyun Park (30/3/1991 – 4/12/1993)
Eloy Rojas (4/12/1993 – 18/5/1996)
Wilfredo Vazquez (18/5/1996 – 18/4/1998)
Naseem Hamed (18/4/1998 – 7/4/2001)
Marco Antonio Barrera (7/4/2001 – 15/11/2003)
Manny Pacquiao (15/11/2003 – 19/3/2005)

Pacquiao moved up in weight 
Juan Manuel Marquez (19/3/2005 – 4/3/2006)

Marquez had earlier unified the IBF/WBA titles
Chris John (4/3/2006 – 6/12/2013)
Simpiwe Vetyeka (6/12/2013 – 31/5/2014)
Nonito Donaire (31/5/2014 – 18/10/2014)
Nicholas Walters (18/10/2014 – 12/6/2015)

Walters moved up in weight 
Leo Santa Cruz (28/1/2017 – 

Santa Cruz (3) beat Carl Frampton (2) BNews. The Ring's number one, Gary Russell, had not met a top-ten man for 22 months
 


Junior Feather (122lbs)
 

Wilfredo Gomez (26/10/1979 – 6/5/1983)

Gomez (1) beat Nicky Perez (3) 
Gomez moved up in weight
Jaime Garza (26/5/1984 – 3/11/1984)

Garza (1) beat Felipe Orozco (4)
Juan Meza (3/11/1984 – 18/8/1985)
Lupe Pintor (18/8/1985 – 18/1/1986)
Samart Payakaroon (18/1/1986 – 8/5/1987)
Jeff Fenech (8/5/1987 – 15/12/1987)

Fenech moved up in weight

Kennedy McKinney (2/12/1992 - 20/8/1994)

McKinney (5) beat Welcome Ncita (1)

Vuyani Bungu (20/8/1994 - 18/4/1997)

Bungu failed to meet a top-five rated opponent for over two years

Junior Jones (18/4/1997 - 19/12/1997)

Jones (1) beat Marco Antonio Barrera (4)

Kennedy McKinney (19/12/1997 - 11/5/1998)

McKinney moved up in weight

Erik Morales (22/10/1999 – 2/9/2000)

Morales (1) beat Wayne McCullough (5)

Morales moved up in weight
Paulie Ayala (23/2/2002 – 16/11/2002)

Ayala (2) defeated Clarence Adams (1)
Ayala moved up in weight
Israel Vazquez (3/12/2005 – 3/3/2007)

Vazquez (3) beat Oscar Larios (1)
Rafael Marquez (3/3/2007 – 4/8/2007)
Israel Vazquez (4/8/2007 – 1/6/2009)

Vasquez moved up in weight
Celestino Caballero (1/6/2009 – 10/12/2010)

Caballero had earlier unified the IBF/WBA titles
Caballero moved up in weight
Nonito Donaire (7/7/2012 – 13/4/2013)

Donaire unified the IBF/WBO titles when beating Jeffrey Mathebula
Guillermo Rigondeaux (13/4/2013 – 9/2/2016)

Rigondeaux had failed to meet a top-five rated opponent for more than two years and had forfeited the WBA/WBO titles

Carl Frampton (27/2/2016 – 28/4/2016)

Frampton unified the IBF/WBA titles when beating Scott Quigg 

Frampton moved up in weight

Daniel Roman (26/4/2019 –

Roman unified the IBF/WBA titles when beating T. J. Doheny


 

Bantam (118lbs)

 

Pete Herman (17/7/1919 – 22/12/1920)

Herman received universal recognition after beating all before him at the weight 
Joe Lynch (22/12/1920 – 25/7/1921)
Pete Herman (25/7/1921 – 23/9/1921)
Johnny Buff (23/9/1921 – 10/7/1922)
Joe Lynch (10/7/1922 – 21/3/1924)
Abe Goldstein (21/3/1924 – 19/12/1924)
Eddie Martin (19/12/1924 – 20/3/1925)
Charley Phil Rosenberg (20/3/1925 – 4/2/1927)

Rosenberg moved up in weight
Panama Al Brown (8/2/1930 – 1/6/1935)

Brown unified the NBA/NY titles when beating Johnny Erickson 
Baltasar Sangchilli (1/6/1935 – 29/6/1936)
Tony Marino (29/6/1936 – 31/8/1936)
Sixto Escobar (31/8/1936 – 23/9/1937)
Harry Jeffra (23/9/1937 – 20/2/1938)
Sixto Escobar (20/2/1938 – 27/10/1939)

Escobar moved up in weight
Lou Salica (24/9/1940 – 7/8/1942)

Salica unified the world title when defeating Georgie Pace 
Manuel Ortiz (7/8/1942 – 6/1/1947)
Harold Dade (6/1/1947 – 11/3/1947)
Manuel Ortiz (11/3/1947 – 31/5/1950)
Vic Toweel (31/5/1950 – 15/11/1952)
Jimmy Carruthers (15/11/1952 – 3/5/1954)

Carruthers retired
Robert Cohen (19/9/1954 – 29/6/1956)

Cohen (1) beat Chamroen Songkitrat (2)
Mario D’Agata (29/6/1956 – 1/4/1957)
Alphonse Halimi (1/4/1957 – 8/7/1959)
Joe Becerra (8/7/1959 – 30/8/1960)

Becerra retired
Eder Jofre (18/1/1962 – 18/5/1965)

Jofre (1) beat Johnny Caldwell (2) 
Fighting Harada (18/5/1965 – 27/2/1968)
Lionel Rose (27/2/1968 – 22/8/1969)
Ruben Olivares (22/8/1969 – 16/10/1970)
Chuchu Castillo (16/10/1970 – 2/4/1971)
Ruben Olivares (2/4/1971 – 19/3/1972)
Rafael Herrera (19/3/1972 – 29/7/1972)
Enrique Pinder (29/7/1972 – 20/1/1973)
Romeo Anaya (20/1/1973 – 3/11/1973)
Arnold Taylor (3/11/1973 – 3/7/1974)
Soo-Hwan Hong (3/7/1974 – 14/3/1975)
Alfonso Zamora (14/3/1975 – 19/11/1977)
Jorge Lujan (19/11/1977 – 29/8/1980)
Julian Solis (29/8/1980 – 14/11/1980)
Jeff Chandler (14/11/1980 – 7/4/1984)
Richie Sandoval (7/4/1984 – 10/3/1986)
Gaby Canizales (10/3/1986 – 4/6/1986)
Bernardo Pinango (4/6/1986 – 15/3/1987)

Pinango moved up in weight
Raul Perez (22/1/1990 – 25/2/1991)

Perez (1) beat Orlando Canizales (2) 
Greg Richardson (25/2/1991 – 19/9/1991)
Joichiro Tatsuyoshi (19/9/1991 – 17/9/1992)
Victor Rabanales (17/9/1992 – 28/3/1993)
Jung-Il Byun (28/3/1993 – 23/12/1993)
Yasuei Yakushiji (23/12/1993 – 30/7/1995)
Wayne McCullough (30/7/1995 – 11/1/1997)

McCullough moved up in weight
Rafael Marquez (15/2/2003 – 16/3/2007) 

Marquez (4) beat Tim Austin (1)
Marquez moved up in weight

Fernando Montiel (30/4/2010 - 19/2/2011)

Montiel unified the WBC/WBO titles when beating Hozumi Hasegawa

Nonito Donaire (19/2/2011 – 24/11/2011)

Donaire moved up in weight
Anselmo Moreno (3/12/2011 – 26/9/2014)

Moreno (1) beat Vic Darchinyan (4). Nonito Donaire had already moved up in weight on 24 November
Juan Carlos Payano (26/9/2014 – 18/6/2016)
Rau’shee Warren (18/6/2016 – 10/2/2017)
Zhanat Zhakiyanov (10/2/2017 – 21/10/2017)

Ryan Burnett (21/10/2017 – 3/11/2018)

Nonito Donaire (3/11/2018 – 7/11/2019)

Naoya Inoue (7/11/2019  –


 

Junior Bantam (115lbs)
 

Jiro Watanabe (29/7/1982 - 30/3/1986)

Watanabe (1) beat Gustavo Ballas (3) BNews 

Gilberto Roman (30/3/1986 - 16/5/1987)

Santos Laciar (16/5/1987 - 8/8/1987)

Bebis Rojas (8/8/1987 - 8/4/1988)

Gilberto Roman (8/4/1988 - 7/11/1989)

Nana Yaw Konadu (7/11/1989 - 20/1/1990)

Sung-Kil Moon (20/1/1990 - 13/11/1993)

Jose Luis Bueno (13/11/1993 - 4/5/1994)

Hiroshi Kawashima (4/5/1994 - 20/2/1997)

Gerry Penalosa (20/2/1997 - 29/8/1998)

In-Joo Cho 29/8/1998 - 27/8/2000)

Masamori Tokuyama (27/8/2000 – 28/6/2004)

Katsushige Kawashima (28/6/2004 – 18/7/2005)
Masamori Tokuyama (18/7/2005 – 10/12/2006)

Tokuyama moved up in weight
Fernando Montiel (16/2/2008 – 10/1/2009)

Montiel (5) beat Martin Castillo (1)
Montiel moved up in weight
Vic Darchinyan (10/1/2009 – 31/8/2010)

Darchinyan had already unified the IBF/WBA/WBC titles
Darchinyan moved up in weight
Srisaket  Sor Rungvisai (3/5/2013 – 31/5/2014)

Sor Rungvisai (3) beat Yota Sato (2) 
Carlos Cuadras (31/5/2014 – 10/9/2016)
Roman Gonzalez (10/9/2016 – 18/3/2017) 
Srisaket Sor Rungvisai (18/3/2017 – 26/4/2019)

Juan Francisco Estrada (26/4/2019 -

 

Fly (112lbs)


Jimmy Wilde (24/4/1916 – 18/6/1923)

Wilde became the first universally recognised champion at the weight on beating Johnny Rosner  
Pancho Villa (18/6/1923 – 14/7/1925)
Villa died 
Fidel LaBarba (21/1/1927 – 25/8/1927)

LaBarba was universally recognised on beating Elky Clark
LaBarba moved up in weight 
Emile Pladner (20/3/1929 – 18/4/1929)

Pladner should be seen as the IBU/NBA champion from this date 
Frankie Genaro (18/4/1929 – 26/10/1931)
Young Perez (26/10/1931 – 31/10/1932)
Jackie Brown (31/10/1932 – 9/9/1935
Benny Lynch (9/9/1935 – 29/6/1938)

Lynch moved up in weight
Peter Kane (22/9/1938 – 8/5/1939)

Kane (2) beat Jackie Jurich (1). Kane had been inadvertently left out of The Ring ratings
Kane moved up in weight
Jackie Paterson (19/6/1943 – 23/3/1948)

Paterson (1) beat Peter Kane (2)
Rinty Monaghan (23/3/1948 – 23/3/1950)
Monaghan retired
Terry Allen (25/4/1950 – 1/8/1950)

Allen (2) beat Honore Pratesi (1)
Dado Marino (1/8/1950 – 19/5/1952)
Yoshio Shirai (19/5/1952 – 26/11/1954)
Pascual Perez (26/11/1954 – 16/4/1960)
Pone Kingpetch (16/4/1960 – 10/10/1962)
Fighting Harada (10/10/1962 – 12/1/1963)
Pone Kingpetch (12/1/1963 – 18/9/1963)
Hiroyuki Ebihara (18/9/1963 – 23/1/1964)
Pone Kingpetch (23/1/1964 – 23/4/1965)
Salvatore Burruni (23/4/1965 – 14/6/1966)
Walter McGowan (14/6/1966 – 30/12/1966)
Chartchai Chionoi (30/12/1966 – 23/2/1969) 
Efren Torres (23/2/1969 – 20/3/1970)
Chartchai Chionoi (20/3/1970 – 7/12/1970)
Erbito Salavarria (7/12/1970 – 9/2/1973)
Venice Borkhorsor (9/2/1973 – 10/7/1973)

Borkhorsor moved up in weight
Miguel Canto (8/1/1975 – 18/3/1979)

Canto (1) beat Oguma (2)
Chan-He Park (18/3/1979 – 18/5/1980)
Shoji Oguma (18/5/1980 – 12/5/1981)
Jose Antonio Avelar (12/5/1981 – 20/3/1982)
Prudencio Cardona (20/3/1982 – 24/7/1982)
Freddy Castillo (24/7/1982 – 6/11/1982)
Eleoncio Mercedes (6/11/1982 – 15/3/1983)
Charlie Magri (15/3/1983 – 27/9/1983)
Frank Cedeno (27/9/1983 – 18/1/1984)
Koji Kobayashi (18/1/1984 – 9/4/1984)
Gabriel Bernal (9/4/1984 – 8/10/1984)
Sot Chitalada (8/10/1984 – 24/7/1988)
Yong-Kang Kim (24/7/1988 – 3/6/1989)
Sot Chitalada (3/6/1989 – 15/2/1991)
Muangchai Kittikasem (15/2/1991 – 23/6/1992)
Yuri Arbachakov (23/6/1992 – 12/11/1997)
Chatchai Sasakul (12/11/1997 – 4/12/1998)
Manny Pacquiao (4/12/1998 – 17/9/1999)
Medgoen Singsurat (17/9/1999 – 19/5/2000)
Malcolm Tunacao (19/5/2000 – 2/3/2001)
Pongsaklek Wonjongkam (2/3/2001 – 18/7/2007)
Daisuke Naito (18/7/2007 – 29/11/2009)
Koki Kameda (29/11/2009 – 27/3/2010)
Pongsaklek Wonjongkam (27/3/2010 – 2/3/2012)
Sonny Boy Jaro (2/3/2012 – 16/7/2012)
Toshiyuki Igarashi (16/7/2012 – 8/4/2013)
Akira Yaegashi (8/4/2013 – 5/9/2014)
Roman Gonzalez (5/9/2014 – 29/9/2016)

Gonzalez moved up in weight

Donnie Nietes (24/2/2018 – 5/4/2018

Nietes (1) beat Juan Carlos Reveco (3) 

Nietes moved up in weight
 

 

Junior Fly (108lbs)
 

Luis Estaba (18/7/1976 - 19/2/1978)

Estaba (1) beat Franco Udella (3) BNews

Freddie Castillo (19/2/1978 - 6/5/1978)

Netrnoi Sor Vorasingh (6/5/1978 - 30/9/1978)

Sung-Jun Kim (30/9/1978 - 3/1/1980)

Shigeo Nakajima (3/1/1980 - 24/3/1980)

Hilario Zapata (24/3/1980 - 6/2/1982)

Amado Ursua (6/2/1982 - 13/4/1982)

Tadashi Tomori (13/4/1982 - 20/7/1982)

Hilario Zapata (20/7/1982 - 26/3/1983)

Jung-Koo Chang (26/3/1983 - 9/12/1989)

Humberto Gonzalez (9/12/1989 - 19/12/1990)

Rolando Pascua (19/12/1990 - 25/3/1991)

Melchor Cob Castro (25/3/1991 - 3/6/1991)

Humberto Gonzalez (3/6/1991 - 13/3/1993)

Michael Carbajal (13/3/1993 – 19/2/1994)

Humberto Gonzalez (19/2/1994 – 15/7/1995)
Saman Sorjaturong (15/7/1995 – 17/10/1999)
Yo-Sam Choi (17/10/1999 – 6/7/2002)
Jorge Arce (6/7/2002 – 18/12/2004) 

Arce moved up in weight
Hugo Fidel Cazares (30/9/2006 – 25/8/2007)

Cazares (1) beat Nelson Dieppa (2)
Ivan Calderon (25/8/2007 – 28/8/2010)
Giovani Segura (28/8/2010 – 5/4/2011)

Segura moved up in weight
Donnie Nietes (10/5/2014 – 3/8/2016)

Nietes (1) beat Moises Fuentes (3)
Nietes moved up in weight

Ryoichi Taguchi (31/12/2017 – 20/5/2018)

Taguchi (1) beat Milan Melindo (2)

Hekkie Budler (20/5/2018 – 31/12/2018)

Hiroto Kyoguchi (31/12/2018 –

 

Mini Fly (105lbs)
 

Napa Kiatwanchai (10/6/1989 - 12/11/1989)

Kiatwanchai (1) beat Hiroki Ioka (2) BNews

Jum-Hwan Choi (12/11/1989 - 7/2/1990)

Hideyuki Ohashi (7/2/1990 - 25/10/1990)

Ricardo Lopez (25/10/1990 – 1/9/1999)

Lopez moved up in weight
Yutaka Niida (3/7/2004 – 15/9/2008)

Niida (5) beat Noel Arambulet (1)
Roman Gonzalez (15/9/2008 – 8/10/2010)
Gonzalez moved up in weight
Kazuto Ioka (20/6/2012 – 3/10/2012)

Ioka unified the WBA/WBC titles when beating Akira Yaegashi
Ioka moved up in weight
Francisco Rodriguez Jnr (9/8/2014 – 25/11/2014)

Rodriguez unified the IBF/WBO titles when beating Katsunari Takayama
Rodriguez moved up in weight
Katsunari Takayama (31/12/2014 – 31/12/2015)

Takayama unified the IBF/WBO titles when defeating Go Odaira
Jose Argumedo (31/12/2015 – 23/7/2017)
Hiroto Kyoguchi (23/7/2017 – 23/7/2018)

Kyoguchi moved up in weight

Knockout CP Freshmart (29/11/2018 -

​Freshmart (2) beat Byron Rojas (3). The Ring’s number one, Wanheng Menayothin, had not met a top five opponent for over two years

                                                    © 2016-2019 Barry J. Hugman & Sean Willis