BoxRec

IMO Black Mamba by TKO 9

Your opinions,please.

As long as Mayweather moves and boxes I think he'd win ,but I remember reading how strong Costello was that he'd be holding his own sparring against Wilford Scypion a big strong middleweight.

And Costello a very heavy puncher.Artful and deadly I see Mayweather in and out dissecting Costello.But Mayweather would need to keep it up all fight.