Conor McGregor was "brought to school" by Floyd Mayweather and needs to "stay in his lane", according to former heavyweight champion Lennox Lewis.

UFC star McGregor lasted 10 rounds with Mayweather in his maiden professional boxing match in Las Vegas, as his opponent stopped him to retire with a perfect 50-0 record.

Many had predicted McGregor would barely last a round with one of the greatest fighters of all-time, so he has earned some credit to have stayed the course for as long as he did.

Floyd Mayweather vs Conor McGregor in pictures Show all 14 1 /14 Floyd Mayweather vs Conor McGregor in pictures Floyd Mayweather vs Conor McGregor in pictures Post-fight Floyd Mayweather celebrates his victory over Conor McGregor. Getty Floyd Mayweather vs Conor McGregor in pictures Mayweather vs McGregor Conor McGregor arrives in the ring first. Getty Floyd Mayweather vs Conor McGregor in pictures Round 1 McGregor shot out of the blocks to take the fight to Mayweather. Getty Floyd Mayweather vs Conor McGregor in pictures Round 2 McGregor looked calm and in control as he took the opening round. Getty Floyd Mayweather vs Conor McGregor in pictures Round 3 Mayweather started to fight back from the third round. Getty Floyd Mayweather vs Conor McGregor in pictures Round 3 McGregor was struggling to contain Mayweather and was warned numerous times by the referee. Getty Floyd Mayweather vs Conor McGregor in pictures Round 4 The UFC star struggled with the pace of the fight as his fitness levels waned. Getty Floyd Mayweather vs Conor McGregor in pictures Round 4 Mayweather was able to evade all of McGregor's attacks. Getty Floyd Mayweather vs Conor McGregor in pictures Round 5 Mayweather shoved McGregor after the ball at the end of the fifth. Getty Floyd Mayweather vs Conor McGregor in pictures Round 6 The Irishman started to glance regularly at the clock. Getty Floyd Mayweather vs Conor McGregor in pictures Round 7 Mayweather was landing big shots at will with McGregor showing no defence. Getty Floyd Mayweather vs Conor McGregor in pictures Round 8 More punishment was dished out on the eighth round. Getty Floyd Mayweather vs Conor McGregor in pictures Round 9 The fight was nearly stopped in the ninth as Mayweather had McGregor on the ropes. Getty Floyd Mayweather vs Conor McGregor in pictures Round 10 Referee Robert Byrd eventually waved off the fight in the tenth round. Getty

However, the statistics and scorecards back up what was consistently predicted - that he would not have the durability to go toe-to-toe with a master of his craft for 12 rounds.

And, despite his immediate online reaction being to say "I like him even more now", Lewis said that McGregor should know his place.

"In the beginning, I didn't look at Conor McGregor as a boxer, this guy has never been 12 rounds and he's in there with a professor of boxing," the Briton told BBC Radio 5 Live. "Floyd took him to school, he made him punch himself out and when he was tired he took him out. It's textbook boxing.

"It shows that boxing is a superior sport. In the ring, you can't beat a boxer, it's not as easy as everybody thought it would be, just because McGregor is a fighter. This is fighting where you can only use your hands."

Mayweather grew into the fight and utterly outclassed McGregor (Getty)

Despite Lewis' criticisms, the money the fight attracted means another boxing outing for McGregor seems inevitable, possibly against Paulie Malignaggi who has denied claims he was put down by the Irishman in sparring.

Lewis, though, hopes McGregor's ring appearance will never be repeated.

"I didn't see the point of the whole thing," he added. "A lot of people found it exciting, could Conor McGregor beat Floyd? It wasn't the case. It was a case of a textbook style brought to school, Conor McGregor got brought to school. He got schooled."