Obvious fight of the year candidate. I see Tapia being too capable defensively for Quiroga. Tapia will struggle for a few rounds until he is able to time Robert and his ultra aggressive style. Then he starts landing body shots slowing quiroga down enough to land some vicious shots while avoiding many in return. Taipa would get stronger as the fight went on. He gets a UD by about 2 round margin.
I liked the version of Tapia prior to the lost years much better than the version that returned. I think that he would win by points, though Quiroga would make him earn it. Incidentally, the is a documentary about Quiroga that is pretty good called One Chance.