Katsuya Onizuka

Within the recorded range there are 25 bouts between 1988 and 1994, about one every 3.2 months. 17 of the 24 wins came inside the distance, 6 of them in the first round. The highest it has been is 2276, in 1994; it stands at 2147 now. The best win came against Tatsuya Sugi in 1990, who was rated 1865 at the time.

Among the losses to lower-rated opponents, the widest gap was Lee Hyung-chul in 1994. Across the final four bouts the rating fell.