My official prediction.

Cotto by tko.

4th round or sooner.

Zab is fast and has SOME power. Nothing like he gets credit for. Cotto is just too damn strong right now. He has been breaking people's bones. Cheek bones, collar bones, ribs, he is gonna land, and Zab isn't durable. Good fight, it will be exciting...... but Zab is gonna catch one to the body and not want to get up....