Referee Kenny Bayless looked to have stopped the bout in round six as the pair would not stop trash talking each other.
But Gotti was not having any of it as he refused to let the fight up.
He immediately chased after Mayweather, who backed up and defended in retreat.
Bayless did his best to try and stop Gotti but the grandson of America’s most notorious mob boss broke free.
He backed Mayweather up the the ropes and the two began trading leather once more – this time with lawlessly.
It sparked a mass brawl in the ring as both teams stormed in and began to throw punches at each other.
There was no sign of the brawling ending, causing Mayweather to be escorted out of the arena.
But the rivalling camps continued to scrap by the ring and backstage, causing police to try and intervene.
A police squad forced fans out of the arena as tensions boiled over inside Fla Live Arena in Fort Lauderdale.
It hosted the seventh exhibition bout of Mayweather’s since he officially retired in 2017.
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