Boxing legend Floyd Mayweather has called out Conor McGregor after the Irish UFC superstar retired from combat sports without facing him in a rematch.
McGregor, 31, shocked MMA fans around the world on Sunday when he took to social media to announce that he was done with fighting.
And Mayweather, 43, famously fought McGregor in a blockbuster crossover fight in Las Vegas in 2017.
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McGregor, who has already outlined the real reasons for his retirement, took to Instagram on Sunday and posted a photo of his 'retirement' cake.
Mayweather called out the 'Notorious' for "quitting" and referenced boxing legend Mike Tyson's claim that McGregor could have beaten him in a rematch.
'Money' wrote in the comments: "If I'm not mistaken, didn't you tell Mike Tyson you could beat me if we fought a second time? Now you're quitting!
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"I thought you wanted to beat the best? Well, if you decide to come back, I will be waiting to punish you again."
McGregor responded to Tyson's praise last month and vowed to "crack the puzzle" and "beat" Mayweather in a lucrative potential rematch.
Mayweather, who retired in 2017 with an undefeated 50-0 record, secured a 10th-round TKO victory over McGregor in their boxing super-fight.
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The former five-division world champ teased fans in February that he was open to the idea of a rematch and would 'whip his a**e' in another fight.
Mayweather has since continued to take shots at McGregor and even called him out during a training session in April.
UFC president Dana White has said that he would welcome McGregor's retirement, despite claiming he would miss him should he never choose to fight again.
Topics: Conor Mcgregor, Boxing News, Notorious, UFC News, MMA News, Boxing, UFC, MMA, Floyd Mayweather
