Floyd Mayweather Jr. won a 12-round decision over Juan Manuel Marquez last night in Las Vegas -- and you can tell because it looks like the dude never got touched.
Floyd partied it up post-fight at Studio 54 inside the MGM Grand with the likes of Diddy, Tyrese and Ray-J.
Floyd Mayweather Jr. -- Fight? What Fight?
9/20/2009 11:47 AM PDT BY TMZ STAFF
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