i saw an interview of juan diaz last night and he said he was going to box more intelligently this time around and not get into any crazy exchanges with marquez. it's hard to believe that he'll do this for very long cause he likes to mix it up but if he does more boxing, marquez will just dissect him and win by comfortable UD. while i think diaz can hurt marquez like in their first fight, i don't think he can KO him so i'm going with marquez by UD.