Undefeated five-division champion Floyd Mayweather Jr claimed a unanimous decision in a feisty encounter against Marcos Maidana to successfully defend three world titles and improve his record to 47-0.
In just the second rematch of his 18-year career, the 37-year-old American came out on top on all three scorecards, retaining his World Boxing Association (WBA) and World Boxing Council (WBC) welterweight and light-middleweight belts.
I bring in a game plan, I bring in a team and we gave the fans what they wanted to see
The victory was another masterful showcase of evasion from Mayweather, widely regarded as one of the best defensive fighters of all-time, as he danced out of danger and used his lightning counter punching to great effect.
Despite a dominating display Mayweather could only give his performance a C-minus.
"I bring in a game plan, I bring in a team and we gave the fans what they wanted to see," said Mayweather, who earned a guaranteed $32m for his night's work.
"He's extremely dirty but rugged. It is another fight, another victory time to move on. The saga continues there are a lot of great fighters out there."
The 12-round bout was not without controversy, however, with Mayweather accusing Maidana (34-5) of biting him, while the American tagged the Argentine with a low blow late in the bout then taunted him as he recovered in a neutral corner.
The evening ended in chaos as the sellout crowd tried to exit the MGM Grand Arena through one main entrance where a fight triggered a stampede, sending several people to floor while others struggled to pull them to safety.
There were no immediate reports of any injuries.