Jiro Watanabe

Within the recorded range there are 28 bouts between 1979 and 1986, about one every 3.1 months. 17 of the 26 wins came inside the distance, 4 of them in the first round. Of the 2 losses, 2 came on the cards and none inside the distance. The best win came against Gustavo Ballas in 1982, who was rated 2241 at the time.

Among the losses to lower-rated opponents, the widest gap was Gilberto Román in 1986. Across the final four bouts the rating fell.