The version of Cotto that UD'ed Mosley vs. the Blocker that outworked Starling and the Cotto that TKO'ed Foreman vs. the Blocker that went up in weight against Norris in a hypothetical 154 lb. match-up
I think the Brown fight took something out of Blocker. He wasn't the same fighter after that or maybe he was always vulnerable to big hitters and it took theTrinidad and Norris fights to show it. Cotto doesn't have the power or speed to duplicate those feats but he still wins. Cotto struggles until his bodypunching and counter hooks break Blocker down. Cotto mid to late round ko.