they meet up in the center of the ring, nice counter right hook by Calderon, still moving but getting touched when on the inside, Iribe is effective when he has Ivan on the ropes, Calderon clutches to get back to the center of the ring, but then effectively moves and throws 1-2's, accidental headbutt, luckily no blood

again Iribe not letting his hands go and when he does he throws one shot at a time

nice solid right by Iribe, but then again punches at the break

ROUND 4: Calderon

38-37 Calderon