Backing Manny up is the best way to stop him from throwing punches. Marquez stood right in front of this version of Manny and when he started landing punches, Manny stopped throwing.

Manny has the power of a welterweight sure, but Mayweather has tasted the power of Oscar at 154 and easily handled it.

Stamina is the friend of both Manny and Mayweather. Both of them train harder than anyone else in the sport and they both have the best stamina in the sport, but I saw Manny getting tired against Cotto and Marquez in their fights, when have we seen Floyd get tired? His style conserves energy.

The kind of pressure that bother Mayweather is the kind Cotto throws at you, Mayweather loves when you punch because then he knows what you are going to do. Its when a guy is reserved and wait to get really close before throwing punches is when it bothers Floyd, and that isn't Manny, and trying to overwhelm Floyd how he throws punches will have him eating counters all night.

The thing is that Pacquiao is great at going backwards when he is fast enough to move out of his opponents range then come forward again, but Mayweather can match his footspeed and that means when Pacquiao tries to change direction to move forward Mayweather will be catching him with punches, thats what Marquez did so effectively. Even though it might look sort of fluid there is distinctive shifts in direction when Manny moves, and you can time him, its just 98% of the boxers are too slow to do it.