Even though he got KTFO, I think this is the best Manny has looked since Cotto (and I've been adamant that he's been on the decline since), so I'm not sure if retirement is a must. Manny showed more head movement and used the jab better tonight against Juan than he has in most of his recent fights. He just was careless against a great fighter and Marquez made him pay for it. I think tonights fight is good for fans who always go on about guys not wanting to finish enough, remember that the other man can flip the script in a minute like Juan did. I see Pacquiao winning a 5th fight if it takes place because Juan was hit uncharacteristically by a lot of Pacquiao shots last night. I'd love to see JMM ride into the sunset with this victory, what a way to end a legendary career it would be. I may be in the minority but with what Manny showed last night I'd still be game for the Mayweather fight, granted not until a tune up because we'll have to see if his punch resistance is gone after that brutal KO. All in all, a great night for boxing.