McGregor, though, surprised many by going toe to toe with Mayweather until the 10th round.
He came out aggressive, throwing several punches in the first three rounds. Mayweather controlled the next three rounds, and it was an even fight through six.
But McGregor was running out of steam, and Mayweather took advantage, landing several blows on the exhausted Irishman in the 10th round until referee Robert Byrd saved the Irishman and stopped the fight.
Mayweather landed more punches than McGregor 130-60 in rounds six through 10 after McGregor had a 51-40 edge in the first five rounds.
“Our game plan was to take our time, go to him, let him shoot his shots early and then take him out down the stretch,” Mayweather said.
“We know in MMA he fights for 25 minutes. After 25 minutes, he started to slow down. I guaranteed to everybody that this wouldn’t go the distance.”
McGregor said he thought it was an early stoppage by the referee.
“I was just a little fatigued,” he said. “(Mayweather) was just a lot more composed with his shots.”
McGregor brought potential power, awkward movement and a mindset a lot of boxers can’t reproduce but in the end those attributes don’t make a great boxer.
Mayweather’s speed, timing and tactical potshots were enough to hold McGregor at bay, so much so that he couldn’t really show off his perceived strengths.
It was the most financially successful fight in boxing history. Mayweather came out of retirement (for the second time) to fight McGregor, the face of the UFC and an athlete 11 years his junior.
Mayweather’s record is now 50-0, surpassing Rocky Marciano, who went 49-0. After Saturday’s win, he said this was the final fight of his career.