The 40 year-old took two rounds to work out the unorthodox style of the Irishman before completely taking control of the fight as McGregor tired quickly.
As McGregor’s power waned round after round, Mayweather had no fear of a big punch landing and walked ‘The Notorious’ down for the next few sessions until the inevitable came in the tenth.
There were some questionable moments which referee Robert Byrd let go at times, but it was clear McGregor just couldn’t get to grips with not being able to use all his MMA faculties and was severely restricted.
Mayweather proved once again his superior skills to any other fighter on the planet as ‘Money’ improved his record to 50-0 and rides off into the sunset (again) with the WBC Money Belt another nine-figure paycheck.
After the contest, Mayweather confirmed to Showtime’s Jim Gray that the McGregor win would be his last fight.
In the co-feature, Gervonta Davis looked out of sorts as the Floyd Mayweather protege claimed a bizarre knockout of Francisco Fonseca.
‘Tank’ seemed sluggish and disinterested at times, fighting with his hands behind his back and taunting his opponent too much in spurts.
The 22 year-old eventually got the job done in the eight by hitting Fonseca behind the head before hitting the Costa Rican as he fell to his knees.