On March 5, 1988, the 31-year-old WBA middleweight world champion, Sumbu Kalambay (43-3-1, 25 KOs), faced a 32-year-old Jamaican boxer Mike McCallum (32-0, 29 KOs), in a title defense fight.
Kalambay came in to the fight on a 6-fight win streak with a 53% KO rate, and was fighting after a gap of 4 months and 11 days. McCallum was on a 32-fight win streak with a 90% KO rate, and fighting after a layoff of 7 months and 16 days.
Sumbu Kalambay defeated Mike McCallum via unanimous decision and successfully defended his WBA middleweight title. Kalambay improves his record to 44-3-1, while McCallum adds a loss to his record at 32-1.
On November 8, 1988, the 32-year-old WBA and The Ring middleweight world champion, Sumbu Kalambay (45-3-1, 25 KOs), faced Doug DeWitt, in a title defense fight.
Kalambay came in to the fight on a 8-fight win streak with a 51% KO rate, and was fighting after a gap of 4 months and 27 days.
Sumbu Kalambay stopped Doug DeWitt via TKO in the 7th round of the 15-round world-title fight, and successfully defended his WBA and The Ring middleweight titles. Kalambay improves his record to 46-3-1 (26 KOs)
On October 23, 1987, 31-year-old Sumbu Kalambay (42-3-1, 25 KOs) and 27-year-old Iran Barkley (22-3, 14 KOs) fought for the vacant WBA middleweight title.
Kalambay came in to the fight on a 5-fight win streak with a 54% KO rate, and was fighting after a gap of 4 months and 27 days. Barkley was on a 13-fight win streak with a 56% KO rate, and fighting after a layoff of 6 months and 20 days.
Sumbu Kalambay defeated Iran Barkley via unanimous decision . Kalambay improves his record to 43-3-1, while Barkley adds a loss to his record at 22-4.
On June 12, 1988, the 32-year-old WBA and The Ring middleweight world champion, Sumbu Kalambay (44-3-1, 25 KOs), faced Robbie Sims, in a title defense fight.
Kalambay came in to the fight on a 7-fight win streak with a 52% KO rate, and was fighting after a gap of 3 months and 7 days.
Sumbu Kalambay defeated Robbie Sims via unanimous decision and successfully defended his WBA and The Ring middleweight titles. Kalambay improves his record to 45-3-1
On November 14, 1991, a 35-year-old Sumbu Kalambay (52-5-1, 31 KOs) and Miodrag Perunovic met in the ring in a middleweight bout.
Kalambay came in to the fight on a 1-fight win streak with a 53% KO rate, and was fighting after a gap of 2 months and 21 days.
Sumbu Kalambay stopped Miodrag Perunovic via TKO in the 4th round. Kalambay improves his record to 53-5-1 (32 KOs)
On May 26, 1987, a 31-year-old Sumbu Kalambay (41-3-1, 25 KOs) and a 27-year-old British boxer Herol Graham (38-0, 21 KOs) met in the ring in a middleweight bout.
Kalambay came in to the fight on a 4-fight win streak with a 55% KO rate, and was fighting after a gap of 2 months and 5 days. Graham was on a 38-fight win streak with a 55% KO rate, and fighting after a layoff of 4 months and 9 days.
Sumbu Kalambay defeated Herol Graham via unanimous decision in the 12-round middleweight fight. Kalambay improves his record to 42-3-1, while Graham adds a loss to his record at 38-1.
On March 12, 1992, a 35-year-old Sumbu Kalambay (53-5-1, 32 KOs) and a 32-year-old British boxer Herol Graham (44-3, 27 KOs) met in the ring for the 2nd time, in a middleweight bout.
Kalambay came in to the fight on a 2-fight win streak with a 54% KO rate, and was fighting after a gap of 3 months and 27 days. Graham was on a 1-fight win streak with a 57% KO rate, and fighting after a layoff of 3 months and 2 days.
In the rematch, Sumbu Kalambay defeated Herol Graham via unanimous decision in the 12-round middleweight fight. Kalambay improves his record to 54-5-1, while Graham adds a loss to his record at 44-4.
On April 1, 1991, Sumbu Kalambay and Mike McCallum met again in a rematch.
Kalambay came in to the fight on a 5-fight win streak with a 53% KO rate, and was fighting after a gap of 4 months and 8 days. McCallum was on a 7-fight win streak with a 82% KO rate, and fighting after a layoff of 1 month and 13 days.
Mike McCallum defeated Sumbu Kalambay via split decision in the rematch and successfully defended his WBA middleweight title. McCallum improves his record to 40-1, while Kalambay adds a loss to his record at 51-5-1.
On August 24, 1991, a 35-year-old Sumbu Kalambay (51-5-1, 30 KOs) and John Ashton met in the ring in a middleweight bout.
Kalambay came in to the fight on a 1-fight losing streak with a 52% KO rate, and was fighting after a gap of 4 months and 23 days.
Sumbu Kalambay stopped John Ashton via RTD in the 6th round. Kalambay improves his record to 52-5-1 (31 KOs)
On November 29, 1989, a 33-year-old Sumbu Kalambay (47-4-1, 27 KOs) and Reggie Miller met in the ring.
Kalambay came in to the fight on a 1-fight win streak with a 51% KO rate, and was fighting after a gap of 1 month and 22 days.
Sumbu Kalambay stopped Reggie Miller via RTD in the 1st round. Kalambay improves his record to 48-4-1 (28 KOs)