Here is a list of Kalambay's best fights. For a list of Kalambay's losses, refer to "Sumbu Kalambay Losses".
On May 26, 1987 Sumbu Kalambay faced off against Herol Graham in a middleweight bout at age 31. He was coming in with a record of 42-3-1 (25), and Graham was 27 years old and with a record of 38-0 (21). Kalambay won the fight via 12-round unanimous decision.
On March 5, 1988 Sumbu Kalambay met Mike McCallum in a middleweight (WBA) world-title defense fight. Kalambay was 31 years old and with a record of 44-3-1 (25), and McCallum was 32 years old and with a record of 32-0 (29). Kalambay won the fight via 12-round unanimous decision and successfully defended his title.
On June 12, 1988 Sumbu Kalambay met Robbie Sims in a middleweight (WBA and The Ring) world-title defense fight. Kalambay was 32 years old and with a record of 45-3-1 (25), and Sims was 28 years old and with a record of 29-4-2 (21). Kalambay won the fight via 12-round unanimous decision and successfully defended his titles.
On March 12, 1992 Sumbu Kalambay faced off against Herol Graham in a middleweight bout at age 35. He was coming in with a record of 54-5-1 (32), and Graham was 32 years old and with a record of 44-3 (27). Kalambay won the fight via 12-round unanimous decision.
On October 23, 1987 Sumbu Kalambay fought Iran Barkley in a middleweight world-title fight for the WBA title. Kalambay was 31 years old and with a record of 43-3-1 (25), and Barkley was 27 years old and with a record of 22-3 (14). Kalambay won the fight via 15-round unanimous decision and is crowned the new middleweight world champion.
On November 8, 1988 Sumbu Kalambay met Doug DeWitt in a middleweight (WBA and The Ring) world-title defense fight. Kalambay was 32 years old and with a record of 46-3-1 (26), and DeWitt was 27 years old and with a record of 30-5-4 (18). Kalambay stopped Doug DeWitt via 7th-round TKO and successfully defended his titles.