This is one of those fights that I still haven't seen. Did Mayweather look flat, Castillo look out of his mind, or what?
Castillo simply landed more, threw more, landed at a higher percentage (all according to compubox), and generally controlled where most of the fight was fought. Also, He seemed to hurt Floyd on a few occasions and made him look very uncomfortable. It was an excellent fight. Definitely the toughest of Floyd's career. I had it 115-111 for Castillo I believe (both were deducted points), although it's been a few months since I last saw it.
It is a great fight. Castillo won the fight. I had Castillo winning by three rounds as did the HBO commentators. Letterman also had Castillo winning and the crowd was pissed. Castillo Threw more, landed more, and was coming forward most of the fight. Castillo also won the championship rounds. Watch the fight!