I noticed margarito was hurt 3 times from body shots.

1. in the first round from an uppercut.

2. in round 8 right before shane knocked him down he landed a great body shot right around the one minute mark.

3. was a right to the body while he was on the ropes before he was stopped. he only threw a few punches after the body shot.

so im thinking those body shots played a good part in breakin that chin. Maybe cotto should think about staying to the body if they fight again.