Osumanu Adama has five losses against five opponents on his boxing record. For a list of Adama's best fights, refer to "Best fights of Osumanu Adama".
On May 1, 2021 Osumanu Adama faced off against Alex Theran in a middleweight bout at age 40. He was coming in with a record of 27-5 (20). Adama lost the fight via 6-round unanimous decision.
On February 1, 2014 Osumanu Adama fought Gennady Golovkin in a middleweight world-title fight for Golovkin's WBA title. Adama was 33 years old and with a record of 22-4 (16), and Golovkin was 31 years old and with a record of 28-0 (25). Adama lost the fight via 7th-round TKO.
On March 7, 2012 Osumanu Adama fought Daniel Geale in a middleweight world-title fight for Geale's IBF title. Adama was 31 years old and with a record of 20-3 (15), and Geale was 31 years old and with a record of 26-1 (15). Adama lost the fight via 12-round unanimous decision.
On April 30, 2010 Osumanu Adama faced off against Donovan George in a middleweight bout at age 29. He was coming in with a record of 17-2 (13). Adama lost the fight via 8-round unanimous decision.
On August 21, 2009 Osumanu Adama faced off against Dyah Davis in a middleweight bout at age 28. He was coming in with a record of 13-1 (9). Adama lost the fight via 6-round unanimous decision.
