Floyd Mayweather Jr. defeats Conor McGregor by TKO

(CNN)In a result that shocked few, Floyd Mayweather Jr. defeated Conor McGregor by technical knockout before a crowd of 14,623 at T-Mobile Arena in Las Vegas on Saturday.

McGregor, though, surprised many by going toe to toe with Mayweather until the 10th round.

"He's a lot better than I thought he was," Mayweather said after the bout.

Mayweather's record is now 50-0, surpassing Rocky Marciano, who went 49-0. After Saturday's win, Mayweather said this was the final fight of his career, calling McGregor "a hell of a champion."

"A win is a win, no matter how you get it," Mayweather said. "Rocky Marciano is a legend, and I look forward to going into the Hall of Fame one day."

Living up to the hype

The only certainty of this fight was that it would be a spectacle not seen before. It lived up to the hype.

Two different sports worlds collided into a 12-round junior middleweight boxing match: Mayweather, considered one of the best defensive boxers of all time, coming out of retirement at age 40, his last fight a unanimous decision victory over Andre Berto on September 12, 2015. McGregor, 29, is the current UFC lightweight champion and the most exciting draw in mixed martial arts today -- but it was his first professional boxing match.

McGregor started running out of steam later in the fight, and Mayweather capitalized in the 10th round.

Photos: Mayweather finishes McGregor in 10th round

McGregor started running out of steam later in the fight, and Mayweather capitalized in the 10th round.

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Referee Robert Byrd stopped the fight in the 10th after a wobbly McGregor took several hard shots and wasn't throwing punches.

Photos: Mayweather finishes McGregor in 10th round

Referee Robert Byrd stopped the fight in the 10th after a wobbly McGregor took several hard shots and wasn't throwing punches.

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Mayweather and his father celebrate the victory.

Photos: Mayweather finishes McGregor in 10th round

Mayweather and his father celebrate the victory.

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The two combatants embrace after the fight.

Photos: Mayweather finishes McGregor in 10th round

The two combatants embrace after the fight.

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Demi Lovato sang the national anthem before the fight.

Photos: Mayweather finishes McGregor in 10th round

Demi Lovato sang the national anthem before the fight.

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McGregor entered the arena first, draped in the Irish flag.

Photos: Mayweather finishes McGregor in 10th round

McGregor entered the arena first, draped in the Irish flag.

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Mayweather came out in all black and wore a mask.

Photos: Mayweather finishes McGregor in 10th round

Mayweather came out in all black and wore a mask.

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There were many celebrities on hand to watch the fight, including basketball star LeBron James. Behind James is boxing legend Mike Tyson.

Photos: Mayweather finishes McGregor in 10th round

There were many celebrities on hand to watch the fight, including basketball star LeBron James. Behind James is boxing legend Mike Tyson.

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Actress Jennifer Lopez and her boyfriend, former baseball star Alex Rodriguez, take in the fight.

Photos: Mayweather finishes McGregor in 10th round

Actress Jennifer Lopez and her boyfriend, former baseball star Alex Rodriguez, take in the fight.

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Actress Charlize Theron sits close to ringside.

Photos: Mayweather finishes McGregor in 10th round

Actress Charlize Theron sits close to ringside.

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A fan waves an Irish flag before the start of the fight.

Photos: Mayweather finishes McGregor in 10th round

A fan waves an Irish flag before the start of the fight.

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Floyd Mayweather Jr. lands a right hand against Conor McGregor during their boxing match in Las Vegas on Saturday, August 26. Mayweather <a href="http://www.cnn.com/2017/08/27/sport/mayweather-vs-mcgregor-fight/index.html" target="_blank">stopped McGregor in the 10th round,</a> collecting his 50th victory in what he said will be the last fight of his undefeated pro career. It was the first pro boxing match for McGregor, a mixed martial artist who is the UFC's lightweight champion.

Photos: Mayweather finishes McGregor in 10th round

Floyd Mayweather Jr. lands a right hand against Conor McGregor during their boxing match in Las Vegas on Saturday, August 26. Mayweather stopped McGregor in the 10th round, collecting his 50th victory in what he said will be the last fight of his undefeated pro career. It was the first pro boxing match for McGregor, a mixed martial artist who is the UFC's lightweight champion.

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McGregor lands an uppercut early in the bout. He came out aggressive and took the fight to Mayweather in the first few rounds.

Photos: Mayweather finishes McGregor in 10th round

McGregor lands an uppercut early in the bout. He came out aggressive and took the fight to Mayweather in the first few rounds.

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McGregor sticks his tongue out at Mayweather during an early exchange.

Photos: Mayweather finishes McGregor in 10th round

McGregor sticks his tongue out at Mayweather during an early exchange.

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McGregor swarms Mayweather at the start of the fight.

Photos: Mayweather finishes McGregor in 10th round

McGregor swarms Mayweather at the start of the fight.

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The much-anticipated fight was held at the T-Mobile Arena in Las Vegas.

Photos: Mayweather finishes McGregor in 10th round

The much-anticipated fight was held at the T-Mobile Arena in Las Vegas.

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After a typically slow start, Mayweather started to force the action more in the middle rounds.

Photos: Mayweather finishes McGregor in 10th round

After a typically slow start, Mayweather started to force the action more in the middle rounds.

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McGregor might have lacked in experience, but he had a clear size advantage.

Photos: Mayweather finishes McGregor in 10th round

McGregor might have lacked in experience, but he had a clear size advantage.

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There were several awkward exchanges when McGregor would end up behind Mayweather.

Photos: Mayweather finishes McGregor in 10th round

There were several awkward exchanges when McGregor would end up behind Mayweather.

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The two fighters trade punches in the middle of the fight.

Photos: Mayweather finishes McGregor in 10th round

The two fighters trade punches in the middle of the fight.

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Mayweather landed more punches than McGregor -- 130-60 -- in rounds six through 10. McGregor had a 51-40 edge in the first five rounds.

Photos: Mayweather finishes McGregor in 10th round

Mayweather landed more punches than McGregor -- 130-60 -- in rounds six through 10. McGregor had a 51-40 edge in the first five rounds.

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McGregor started running out of steam later in the fight, and Mayweather capitalized in the 10th round.

Photos: Mayweather finishes McGregor in 10th round

McGregor started running out of steam later in the fight, and Mayweather capitalized in the 10th round.

Hide Caption

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Referee Robert Byrd stopped the fight in the 10th after a wobbly McGregor took several hard shots and wasn't throwing punches.

Photos: Mayweather finishes McGregor in 10th round

Referee Robert Byrd stopped the fight in the 10th after a wobbly McGregor took several hard shots and wasn't throwing punches.

Hide Caption

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Mayweather and his father celebrate the victory.

Photos: Mayweather finishes McGregor in 10th round

Mayweather and his father celebrate the victory.

Hide Caption

13 of 21

The two combatants embrace after the fight.

Photos: Mayweather finishes McGregor in 10th round

The two combatants embrace after the fight.

Hide Caption

14 of 21

Demi Lovato sang the national anthem before the fight.

Photos: Mayweather finishes McGregor in 10th round

Demi Lovato sang the national anthem before the fight.

Hide Caption

15 of 21

McGregor entered the arena first, draped in the Irish flag.

Photos: Mayweather finishes McGregor in 10th round

McGregor entered the arena first, draped in the Irish flag.

Hide Caption

16 of 21

Mayweather came out in all black and wore a mask.

Photos: Mayweather finishes McGregor in 10th round

Mayweather came out in all black and wore a mask.

Hide Caption

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There were many celebrities on hand to watch the fight, including basketball star LeBron James. Behind James is boxing legend Mike Tyson.

Photos: Mayweather finishes McGregor in 10th round

There were many celebrities on hand to watch the fight, including basketball star LeBron James. Behind James is boxing legend Mike Tyson.

Hide Caption

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Actress Jennifer Lopez and her boyfriend, former baseball star Alex Rodriguez, take in the fight.

Photos: Mayweather finishes McGregor in 10th round

Actress Jennifer Lopez and her boyfriend, former baseball star Alex Rodriguez, take in the fight.

Hide Caption

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Actress Charlize Theron sits close to ringside.

Photos: Mayweather finishes McGregor in 10th round

Actress Charlize Theron sits close to ringside.

Hide Caption

20 of 21

A fan waves an Irish flag before the start of the fight.

Photos: Mayweather finishes McGregor in 10th round

A fan waves an Irish flag before the start of the fight.

Hide Caption

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Floyd Mayweather Jr. lands a right hand against Conor McGregor during their boxing match in Las Vegas on Saturday, August 26. Mayweather <a href="http://www.cnn.com/2017/08/27/sport/mayweather-vs-mcgregor-fight/index.html" target="_blank">stopped McGregor in the 10th round,</a> collecting his 50th victory in what he said will be the last fight of his undefeated pro career. It was the first pro boxing match for McGregor, a mixed martial artist who is the UFC's lightweight champion.

Photos: Mayweather finishes McGregor in 10th round

Floyd Mayweather Jr. lands a right hand against Conor McGregor during their boxing match in Las Vegas on Saturday, August 26. Mayweather stopped McGregor in the 10th round, collecting his 50th victory in what he said will be the last fight of his undefeated pro career. It was the first pro boxing match for McGregor, a mixed martial artist who is the UFC's lightweight champion.

Hide Caption

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McGregor lands an uppercut early in the bout. He came out aggressive and took the fight to Mayweather in the first few rounds.

Photos: Mayweather finishes McGregor in 10th round

McGregor lands an uppercut early in the bout. He came out aggressive and took the fight to Mayweather in the first few rounds.

Hide Caption

2 of 21

McGregor sticks his tongue out at Mayweather during an early exchange.

Photos: Mayweather finishes McGregor in 10th round

McGregor sticks his tongue out at Mayweather during an early exchange.

Hide Caption

3 of 21

McGregor swarms Mayweather at the start of the fight.

Photos: Mayweather finishes McGregor in 10th round

McGregor swarms Mayweather at the start of the fight.

Hide Caption

4 of 21

The much-anticipated fight was held at the T-Mobile Arena in Las Vegas.

Photos: Mayweather finishes McGregor in 10th round

The much-anticipated fight was held at the T-Mobile Arena in Las Vegas.

Hide Caption

5 of 21

After a typically slow start, Mayweather started to force the action more in the middle rounds.

Photos: Mayweather finishes McGregor in 10th round

After a typically slow start, Mayweather started to force the action more in the middle rounds.

Hide Caption

6 of 21

McGregor might have lacked in experience, but he had a clear size advantage.

Photos: Mayweather finishes McGregor in 10th round

McGregor might have lacked in experience, but he had a clear size advantage.

Hide Caption

7 of 21

There were several awkward exchanges when McGregor would end up behind Mayweather.

Photos: Mayweather finishes McGregor in 10th round

There were several awkward exchanges when McGregor would end up behind Mayweather.

Hide Caption

8 of 21

The two fighters trade punches in the middle of the fight.

Photos: Mayweather finishes McGregor in 10th round

The two fighters trade punches in the middle of the fight.

Hide Caption

9 of 21

Mayweather landed more punches than McGregor -- 130-60 -- in rounds six through 10. McGregor had a 51-40 edge in the first five rounds.

Photos: Mayweather finishes McGregor in 10th round

Mayweather landed more punches than McGregor -- 130-60 -- in rounds six through 10. McGregor had a 51-40 edge in the first five rounds.

Hide Caption

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McGregor started running out of steam later in the fight, and Mayweather capitalized in the 10th round.

Photos: Mayweather finishes McGregor in 10th round

McGregor started running out of steam later in the fight, and Mayweather capitalized in the 10th round.

Hide Caption

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It was billed as the first boxing-UFC crossover bout in history. It pitted youth vs experience. But it was a boxing fight with boxing rules, meaning McGregor couldn't kick or wrestle like he would in a UFC bout.

The speculation in the weeks leading up to the fight undeniably had Mayweather -- who hasn't lost since 1996 in the Olympics when he was an amateur -- as the heavy favorite. Heading into Saturday night, boxing aficionados viewed the fight as a joke.

It was no joke

News Courtesy: www.cnn.com