If Rafa would still be interested in a rematch and by having his shoulder an excuse to quit the fight, I think he deserve to have it. The way he had Lopez' chin checked more than once in this match, I think it would be worth to watch the second time. But having seen their fight and before noticing Marquez holding his shoulder upon ending the 7th, I just thought I saw an old Rafael Marquez who couldn't stand the pressure of Lopez. If age causes Rafa to wave the white flag, then rematch is simply not good to watch.