How often do smaller heavyweights defeat bigger heavyweights?

[WillieWild114]

I want someone to give me the statistics on this. How often do GOOD small heavyweights contenders/champions defeat bigger heavyweights that are contenders/champions ?

[SouthpawRight]

good question

When does additional size backfire on average

[Smash]

often enough for people to mostly stop saying that guy has no chance hes too small

[Toffee]

Often enough that the heavyweight champion isn't now 7 foot tall.

There's a cycle in boxing. Good big 'un beats a good little 'un. Until the the big 'uns get so big that they get made to look clumsy by a smaller, faster fighter.

Size is a big advantage until it becomes a disadvantage.

[hugh grant]

It's 50-50