They should go at it again, I mean it seems that more than half the people seem to think that marquez won the fight, so a rematch is warranted. As for marquez getting knocked out by valero and guzman can't see it happening, would outbox valero and guzman and jmm would be very intresting but I'd favor jmm. I don't think this fight ruined him at all, one fight usually doesn't do that to ya he's been a very smart boxer throughout his career for the most part thats why he's still able to compete at such a high level at 34, which is almost antiquity for the lower weight classes.