Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
<
Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
International Boxing Union
World Middleweight Title
Frank Klaus
1913-06
Has defeated Georges Carpentier for the world title on 11-08-17 in New York, NY, USA; recognized by IBU upon its inception in 1913-05 (Le Sport Universel Illustré, Paris, FRA, 13-07-06).
George Chip
1913-10-11
Pittsburgh, PA, USA
Al McCoy
1914-04-07
Brooklyn, NY, USA
Mike O'Dowd
1917-11-14
Brooklyn, NY, USA
Officially recognized by IBU at its convention on 20-02-05 (The Sandusky Star-Journal, Sandusky, OH, USA, 20-02-06).
Johnny Wilson
1920-05-06
Boston, MA, USA
Harry Greb
1923-08-31
New York, NY, USA
Recognized by IBU as of 23-11-18 (The Ottawa Citizen, Ottawa, ON, CAN, 23-11-19).
Tiger Flowers
1926-02-26
New York, NY, USA
Mickey Walker
1926-12-03
Chicago, IL, USA
Vacant as of 30-05-22 (Associated Press, 30-05-22).
Gorilla Jones
1932-01-25
Milwaukee, WI, USA
Defeats Oddone Piazza in tournament final; officially recognized by IBU at its convention on 32-05-22 (The San Francisco Examiner, 32-05-23).
Marcel Thil
1932-06-11
Paris, FRA
Defeats Gorilla Jones to win NBA and vacant IBU titles; also wins European light heavyweight title on 34-03-26; loses to Fred Apostoli on 37-09-23 in New York, NY, USA but continues to be recogzed as champion by IBU; stripped of the title on 37-10-21 for refusal to fight Kid Tunero.
Edouard Tenet
1938-04-07
Berlin, GER
Defeats Marcel Thil to win the world and European titles; recognition withdrawn in 38-04 when IBU joins the newly founded World Boxing Commission in an effort to have one universally recognized champion.
Freddie Steele
1938-04
Has won NBA and NYSAC titles on 36-07-11; recognized by the World Boxing Commission in 38-04 (International News Service, 38-04-22).
