Jmm would get ate up. I think ortiz would probably have the best chance, a slim chance but better then the rest. I won't say mosley cause we're fixing to see the fight and we'll find out how much he has left in a week.
amir khan i think can, he is tall and has the size
Just because he's tall doesn't mean he'll beat him. Pacquiao's used to fighting taller opponents.
:chairshot
As funny as it's sounds, outside of Floyd, I would have to say JMM.
Khan has the skill and athletism, but his chin will be his downfall against Manny. Same with Berto except add his poor stamina to weak chin and dude gets blown out the water.
I also like Ortiz, but I give the edge to Marquez due to experience, chin and proven toughness. Also he has two fights with Manny...so yeah, IMHO Marquez would have the best chance, although slim to none, of beating Pacquaio.