Watch McGregor vs Diaz 1...Diaz rocked him with a right and was about to knock him out before McGregor sprawled to the ground and got choked out. Mayweather has had a pretty good career of not getting ...but watch the 1st round of Mayweather vs Mosley. He almost got knocked out. His Mom even thought he was gonna get knocked out. But Mayweather as great as he is survived and went on to win the next 11 rounds. This will be an interesting fight.