Mike McCallum has five losses against four opponents on his boxing record. For a list of McCallum's best fights, refer to "Best fights of Mike McCallum".
On February 22, 1997 Mike McCallum faced off against James Toney in a cruiserweight bout at age 41. He was coming in with a record of 49-5-1 (36), and Toney was 28 years old and with a record of 53-3-2 (35). McCallum lost the fight via 12-round unanimous decision.
On November 22, 1996 Mike McCallum fought Roy Jones Jr. in a light-heavyweight world-title fight for the WBC title. McCallum was 40 years old and with a record of 49-4-1 (36), and Jones Jr. was 27 years old and with a record of 33-0 (29). McCallum lost the fight via 12-round unanimous decision.
On June 16, 1995 Mike McCallum met Fabrice Tiozzo in a light-heavyweight (WBC) world-title defense fight. McCallum was 39 years old and with a record of 48-3-1 (36), and Tiozzo was 26 years old and with a record of 31-1 (21). McCallum lost the fight via 12-round unanimous decision and lost the title.
On August 29, 1992 Mike McCallum fought James Toney in a middleweight world-title fight for Toney's IBF title. McCallum was 36 years old and with a record of 43-2-1 (34), and Toney was 24 years old and with a record of 31-0-2 (21). McCallum lost the fight via 12-round majority decision.
On March 5, 1988 Mike McCallum fought Sumbu Kalambay in a middleweight world-title fight for Kalambay's WBA title. McCallum was 32 years old and with a record of 32-1 (29), and Kalambay was 31 years old and with a record of 43-3-1 (25). McCallum lost the fight via 12-round unanimous decision.