Five division world champion Floyd Mayweather was very quick to troll UFC star Conor McGregor - who suffered a first round stoppage loss in his trilogy fight with Dustin Poirier, which took place on Saturday night at the T-Mobile Arena in Las Vegas. 

During an exchange where McGregor missed a big punch - a freak accident occurred as McGregor broke his leg while taking a step back. McGregor left the arena on a stretcher and is scheduled for surgery in the morning.

Mayweather tweeted out his betting slip, where he thanked Poirier for making him money. He placed a $50,000 wager on Poirier to win. The bet paid him $35,714.30.

Poirier responded back - “I got you champ!”

Back in August of 2017, McGregor entered the sport of boxing and made his pro debut against Mayweather in a massive pay-per-view event. Mayweather, who retired in the aftermath, stopped him in ten rounds.

McGregor was planning to return to boxing against Manny Pacquiao in the summer, but those plans were derailed when Poirier stopped him in two rounds earlier this year.

A few days ago, it was McGregor doing the trolling - as he ridiculed Mayweather's recent exhibition fight with Logan Paul.

McGregor still believes a rematch with Mayweather will happen at some point down the line.

"I have no problem with Floyd, it wasn't a good look for him to face that man [Logan Paul) in his last one. It didn't feel right, even he didn't feel right, you could see it in him. We can go again if he wants," McGregor said. "I feel that's going to happen at some stage down the line."