1.
Born Cassius Clay, nicknamed “The Greatest”
2.
Became the youngest heavyweight champion in 1986
3.
Heavyweight who made a comeback to win the title at age 45
4.
Nicknamed the “Brown Bomber,” long-reigning heavyweight champion
5.
Retired undefeated heavyweight champion with a 49–0 record
6.
Retired American boxer with a 50–0 record
7.
Filipino boxer nicknamed “Pac-Man”
8.
Famous heavyweight champion of the 1920s
9.
Heavyweight who defeated Muhammad Ali in the “Fight of the Century”
10.
Heavyweight known for fights with Tyson and the “ear bite” incident
11.
Leonard Olympic gold medalist and five-division world champion
12.
Lost to Muhammad Ali in their famous 1964 title fight
13.
Nicknamed “The Hitman,” multiple division world champion
14.
Panamanian lightweight nicknamed “Hands of Stone”
15.
Ukrainian brothers Vitali and Wladimir both held heavyweight titles
16.
British heavyweight who defeated both Tyson and Holyfield
17.
Leon, who shocked the world by beating Muhammad Ali in 1978
18.
Defeated Jack Dempsey twice in the 1920s
19.
Prizefighter turned Hollywood star known as “Gentleman Jim” Corbett
20.
Prestigious amateur boxing tournament in the United States
