On May 1, 2021, a 40-year-old Osumanu Adama (27-4, 20 KOs) and Alex Theran met in the ring.
Adama came in to the fight on a 5-fight win streak with a 64% KO rate, and was fighting after a gap of 1 year and 6 months.
Osumanu Adama lost to Alex Theran via unanimous decision in the 6-round fight, and adds an loss to his record at 27-5.
On February 1, 2014, a 33-year-old Osumanu Adama (22-3, 16 KOs) got a shot at the middleweight WBA title held by 31-year-old Kazakhstani boxer Gennady Golovkin (28-0, 25 KOs).
Adama came in to the fight on a 2-fight win streak with a 64% KO rate, and was fighting after a gap of 6 months and 6 days. Golovkin was on a 28-fight win streak with a 89% KO rate, and fighting after a layoff of 2 months and 30 days.
Gennady Golovkin stopped Osumanu Adama via TKO in the 7th round of the 12-round world-title fight, and successfully defended his WBA middleweight title. Golovkin improves his record to 29-0 (26 KOs), while Adama adds a loss to his record at 22-4.
On March 7, 2012, a 31-year-old Osumanu Adama (20-2, 15 KOs) got a shot at the middleweight IBF title held by 31-year-old Australian boxer Daniel Geale (26-1, 15 KOs).
Adama came in to the fight on a 3-fight win streak with a 68% KO rate, and was fighting after a gap of 5 months. Geale was on a 5-fight win streak with a 55% KO rate, and fighting after a layoff of 6 months and 7 days.
Daniel Geale defeated Osumanu Adama via unanimous decision and successfully defended his IBF middleweight title. Geale improves his record to 27-1, while Adama adds a loss to his record at 20-3.
On April 30, 2010, a 29-year-old Osumanu Adama (17-1, 13 KOs) and Donovan George met in the ring.
Adama came in to the fight on a 4-fight win streak with a 72% KO rate, and was fighting after a gap of 2 months and 24 days.
Osumanu Adama lost to Donovan George via unanimous decision in the 8-round fight, and adds an loss to his record at 17-2.
On August 21, 2009, a 28-year-old Osumanu Adama (13-0, 9 KOs) and Dyah Davis met in the ring.
Adama came in to the fight on a 13-fight win streak with a 69% KO rate, and was fighting after a gap of 8 months and 30 days.
Osumanu Adama lost to Dyah Davis via unanimous decision in the 6-round fight, and adds an loss to his record at 13-1.