Floyd Mayweather was an invincible force – but Zab Judah came close to taking away his perfect undefeated record.

Zab Judah had speed, swagger, and something to prove. He started strong and even stunned Mayweather with a sneaky left in round two. Then came Floyd's infamous low blow and full-blown melee ...

On May 21, Floyd Mayweather returns to a boxing ring ... including Arturo Gatti, Zab Judah, Jose Luis Castillo, Ricky Hatton and Shane Mosley. "Money" initially retired in 2015 after beating ...