Answer: GREB

AnswerCrossword Clue
GREBMiddleweight champion, 1923-26.
GREBFormer middleweight champ.
GREBMiddleweight champ, 1923-26.
GREBMiddleweight champion of 30 years ago.
GREBHarry ..., former boxing champion.
GREBFormer middleweight champion.
GREBBoxing champ of the '20s
GREBMiddleweight champ of '20's
GREBMiddleweight champ: 1923-26
GREBMiddleweight champion: 1923-26