People who say Hatton wasn't able to use his style at all are full of shit, there were many points they fought his fight, and he was effective in a few of them, but most of the time Mayweather still got the better of it. I am pretty use the forarm is illegal, but Mayweather uses it sneakily so its harder for the ref to see, and he punches right after he uses it and usually the refs won't break it up, but Mayweather was cautioned as well all fight about hitting behind the head, fighting dirty, and using the elbow. Its not like Hatton was the only one who was being cautioned, I think Cortez is allowed to breaking up clinches because I am sure HBO didn't want this highly televised PPV to be a hug fest. However I feel Mayweather should have eventually gotten a point deducted, but the thing is, is that he uses that elbow and after he's cautioned he doesn't use it for awhile, and in that big of a fight when it happens 2 or 3 rounds later the ref might forget what happened earlier.