Marquez approached the 4th fight much differently than the first 3, is the thing. He really was flat footed and selling out for single shots, this could've backfired on him and in my opinion was until he landed the KO punch, people forget what a dominant round that had been for Manny until then, perhaps Maybe Marquez knew he wouldn't be able to fight 12 at the pace they had prior, he is ancient for his size after all. Would anyone have even been talking about steroids if Manny had not gotten careless and ground Marquez out over the next few rounds? Easily could've happened if you ask me, JMM did not intend for that fight to go the distance one way or another. Neither man had taken nearly as much damage by the 6th round in any of their first 3 encounters, listening to these lucky punch idiots you'd think Marquez just breezed through it all.