Muhammad Ali and George ForemanAP PhotoThe ''Rumble in the Jungle'' resulted in a knockout of George Foreman by Muhammad Ali.

Favorites get that way in boxing for a reason -- they've proven time and again their ability to take on all comers. Sometimes, however, things don't go quite as planned. It's why they actually have the fights -- you never know what will happen, and that can produce some of the most legendary matches in boxing history. We've come up with a list of the best upsets of all time. Which do you think is the greatest?

Boxing's greatest upsets

Corbett beats Sullivan

Corbett beats Sullivan

James J. Corbett KO21 John L. Sullivan, Sept. 7, 1892


Braddock beats Baer

Braddock beats Baer

James J. Braddock W15 Max Baer, June 13, 1935


Schmeling beats Louis

Schmeling beats Louis

Max Schmeling KO12 Joe Louis, June 19, 1936


Turpin beats Robinson

Turpin beats Robinson

Randy Turpin W15 Sugar Ray Robinson, July 10, 1951


Clay beats Liston

Clay beats Liston

Cassius Clay TKO6 Sonny Liston, Feb. 25, 1964


Ali beats Foreman

Ali beats Foreman

Muhammad Ali KO8 George Foreman, Oct. 30, 1974


Spinks beats Holmes

Spinks beats Holmes

Michael Spinks W15 Larry Holmes, Sept. 21, 1985


Leonard beats Hagler

Leonard beats Hagler

Sugar Ray Leonard W12 Marvin Hagler, April 6, 1987


Douglas beats Tyson

Douglas beats Tyson

Buster Douglas KO10 Mike Tyson, Feb. 11, 1990


Foreman beats Moorer

Foreman beats Moorer

George Foreman KO10 Michael Moorer, Nov. 5, 1994


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