Renzo was definitely winning the fight IMO. He was taking Shamrock down almost at will, he controlled the fight on the ground, and I just don't think Shamrock did enough damage with strikes to win either round. I'm not saying Renzo was completely dominating, but I just see him winning on the scorecards.
He definitely answered alot of questions about where Shamrock is as a fighter at this point in his career. It's sad that Renzo is the best fighter that Shamrock has fought since Tito in 99. I hope he wakes up now.