Best Calendar Year for a boxer

[Rusty Tromboni]

McGovern in 1900 outright rivals Greb's 1919.

He proved the best fighter in the world from Bantamweight to Lightweight. Championship weight limits were less fixed and securing official championship bouts more difficult. But he was laying out everyone put in front of him.

[Rusty Tromboni]

Leonard's 1917 also challenges Greb's 1919.

Unfathomable achievement.