This is the hardest fight for Mayweather. He can't take Spinks out, and Spinks is taller with a longer reach. Spinks is a much better outside boxer than Mosley, and he is very fast. You saw the troubles Judah gave Mayweather with his speed and being southpaw... Spinks outboxed Judah in both fights, but succumbed to his power in the second fight which is fair because Judah hits really hard.