Sumbu Kalambay

Within the recorded range there are 64 bouts between 1980 and 1993, about one every 2.4 months. 33 of the 57 wins came inside the distance, 2 of them in the first round. Of the 6 losses, 1 came inside the distance and 5 on the cards. The best win came against Mike McCallum in 1988, who was rated 2519 at the time.

There are 2 wins over opponents who were rated higher on the day. Among the losses to lower-rated opponents, the widest gap was Chris Pyatt in 1993. Across the final four bouts the rating barely moved.