Ricky Hatton was his toughest fight at 147 (and he was a welterweight having won a title earlier from Luis Collazo) , Shane Mosley was his best credentialed foe at 147 and Zab Judah was his most difficult opponent at that weight thus far because Zab was left handed, quick and skilled.

Ricky Hatton, he was undefeated and in the top 10 p4p and was coming off a few big wins. When Mayweather initially pursued the fight with Judah, Judah was a good WW and had been the champ for a while. Judah's loss to Baldomir showed that he still lacked mental focus to stay champ for a long time.

If you mean his most competitive fight, Zab Judah. In fact, it is really the only fight he's had at 147 that was competitive.

If you mean, the fighter who had the best career overall, it would have to be Shane Mosley.

Probably Zab Judah

Super judah

Hatton actually was going to win until he got ko'd

hatton

best in terms of what?

http://en.wikipedia.org/wiki/Floyd_Maywe...