Former five division world champion Floyd Mayweather has made it clear that he will never fight again in a sanctioned fight - and he likely won't take another exhibition either.

On Sunday night at Hard Rock Stadium, the 44-year-old Mayweather looked every bit his age in going the eight round distance with Youtube star Logan Paul, who has one professional fight on his record.

Mayweather retired from the sport in August of 2017, when he stopped UFC star Conor McGregor in ten rounds.

He briefly returned to the ring in December 2018, when he traveled over to Japan and stopped undersized Tenshin Nasukawa in one round.

Paul, although very inexperienced, held a significant edge in height, weight and reach.

At Saturday's weigh-in, Paul came in at nearly 35-pounds heavier than Mayweather. Paul was likely 10 or 15-pounds heavier than his 190-pound weigh-in cap by the time he stepped in the ring.

Paul was able to use his size to grab Mayweather when necessary and hold him place to avoid taking too much punishment.

The performance solidified to Mayweather that his in-ring days are long past him - making a potential exhibition clash with younger brother Jake Paul very unlikely for the future.

"I am not going to perform like I was 19, it's all about growth and aging. I can't fight like when I fought people like Gatti and people like that. It's sad [Manny] Pacquiao is coming out to fight again," Mayweather said.

"Will I make a comeback? Absolutely not. I have retired from the sport of boxing. I probably won't do an exhibition again either."