Mayweather never fought Kostya Tszyu. I'm not sure who that first guy is your talking about him ducking but the only person i'd say would be Margarito but that's because he wants the big dough for Oscar which is a smart move. And i definately wouldn't say he's ducking Hatton, he'd give him a boxing lesson from bell to bell. If he fights Oscar he better do it at 147lbs because if he moves up to 154lbs that might be playing right into Oscar's hands. At 147lbs this is an awesome fight and i wouldn't be dropping any money on betting i'd just sit back and enjoy the show!