Following a head butt from Victor Ortiz in round four, Floyd Mayweather Jr. first hugged Ortiz after he apologized then knocked him out with a suckerpunch combo. The following video shows how it went down. My favorite part is the absolute clueless face of the referee once he realizes what just happened. You will also see Mayweather’s post-fight verbal altercation with announcer Larry Merchant.
For a full play by play analysis of the fight go here: Floyd Mayweather Jr. vs. Victor Ortiz results and play by play.