Heavyweight rankings, April 1971

Computed retroactively from today’s data and formula; not the lists as published then.

Boxerbook rating at the end of April 1971: 1. Joe Frazier, 2. Muhammad Ali, 3. Sonny Liston.

Boxerbook rating

12 boxers met the list thresholds at the end of the month. μ ± RD; arrows show the move since the end of March 1971. How it works

2386 ± 131–

2338 ± 125–

2059 ± 131–

1918 ± 127–

1911 ± 114–

1878 ± 134–

1874 ± 108–

1862 ± 105–

1855 ± 105–

1706 ± 97–

1563 ± 109–

1471 ± 134new

Boxerbook’s archive of the publishers’ lists starts in 2026, so there are none for April 1971.