Muhammad Ali

Within the recorded range there are 61 bouts between 1960 and 1981, about one every 4.2 months. 37 of the 56 wins came inside the distance, 2 of them in the first round. Of the 5 losses, 1 came inside the distance and 4 on the cards. The highest it has been is 2740, in 1978; it stands at 2548 now. The best win came against George Foreman in 1974, who was rated 2524 at the time.

Measured by the gap on the day, the biggest upset was the win over Sonny Liston in 1964. The record includes 2 wins against a higher-rated opponent. The biggest upset conceded was the loss to Leon Spinks in 1978. The rating was sliding across the final four bouts.