There are things Cotto can do, to not tire out, Not that it will chane a rematch, but he can clinch more off the ropes, He moved back wards when he could have come forward throwing punches. He didn't need to move straight backwards he moved fast enough that he could have kept the fight int he center of the ring with a lot less energy wasted. Even Cintron was able to keep the fight in the middle of the ring more. Cotto was going straight back to the ropes on his own accord.