Ken Norton

Within the recorded range there are 50 bouts between 1967 and 1981, about one every 3.3 months. 33 of the 42 wins came inside the distance, 2 of them in the first round. Of the 7 losses, 4 came inside the distance and 3 on the cards. The highest it has been is 2405, in 1978; it stands at 2270 now. The best win came against Muhammad Ali in 1973, who was rated 2678 at the time.

Among the losses to lower-rated opponents, the widest gap was Earnie Shavers in 1979. Across the final four bouts the rating fell.