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100 greatest sports photos of all-time

Sports Illustrated Logo By Neil Leifer of Sports Illustrated | Slide 1 of 100: Nov. 14, 1966 | Ali knocks out Cleveland 'Big Cat' Williams in three rounds at the Houston Astrodome to defend his heavyweight title in November 1966. The bout drew a record indoor crowd of 35,460.

Muhammad Ali and Cleveland Williams

Nov. 14, 1966 | Ali knocks out Cleveland 'Big Cat' Williams in three rounds at the Houston Astrodome to defend his heavyweight title in November 1966. The bout drew a record indoor crowd of 35,460.

© Neil Leifer

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