http://www.boxing2004.com/BoxingExclusive.com/index.htm

According to Stuart,
Cintron is the man to bring #1 P4P down.

Personally,
I don't think that there's a right-handed boxer between 140-147 that can beat Floyd. I see southpaw contender Collazo able to win a close decision if He can outbox Floyd like Judah did on his good rds.
Judah exposed Mayweather inability to make the adjustments to fight a southpaw. He could not move to his left, was not consistent keeping his left leg outside, and was open for right jabs all night long.
Judah was dumb, but I think Collazo can take the tape and shave the dumbass rounds Judah gave away. Mosley is the only right handed boxer I see staying with him, but loosing by D.

Also, If He goes bigger; do not see Mayweather beating Wright.