Floyd Mayweather's latest exhibition descended into chaos when his opponent sparked a mass brawl after the fight was stopped.
John Gotti III, grandson of the infamous mob boss from the Gambino crime family, continued to swing at the boxing legend even after Kenny Bayless referee disqualified him.
As expected, Mayweather was showboating and seemed entirely untroubled by his opponent.
In the sixth round, Bayless called an end to the fight and Gotti wasn't best pleased.
He continued to go after Mayweather leading to dozens of people entering the ring and get involved in a mass punch up.
The 50-0 boxer then sat on the top rope to observe the scene, before being escorted from the arena.
The fighting continued both inside and outside the ring as police officers tried to restore some order.
Afterwards, Gotti posted on an Instagram story: "Bum never put me down or stopped me. It was a DQ for no reason." He also called Mayweather his 'enemy for life'.
It was the latest in a string of bizarre exhibition fights for Mayweather.
He last took on reality TV star Aaron Chalmers at a half empty O2 Arena in February.
It was his seventh in total since retiring in 2017 after beating Conor McGregor for his 50th career victory without defeat.
On the undercard was a win for Jarrell Miller, who was due to fight Anthony Joshua in 2019 before failing a drugs test.
Meanwhile, there were celebrities at ringside that included the likes of former Manchester United midfielder Paul Pogba and rapper Rick Ross.
Unable to keep Floyd Mayweather and John Gotti III from behaving themselves in the ring, referee Kenny Bayless called off the main event of Sunday’s Mayweather vs. Gotti III exhibition.
But Gotti III wasn’t ready to stop fighting, and chaos ensued.
Mayweather’s team quickly leapt to the former boxing champ’s aide as Gotti III threatened to keep fighting after Bayless’ call, and that prompted Gotti III’s team to charge the ring, resulting in an ugly brawl that brought the sloppily run exhibition event to a premature halt in the sixth round.
From the outset, officials struggled to contain the fighters’ camps, delaying the eight-round fight for several minutes when entourages refused to clear the aisles for cornermen. Then things got personal when Mayweather’s incessant taunting – of Gotti III and the sizable entourage that showed up to support him – angered the former MMA fighter. No longer did Gotti III play hapless victim as he repeatedly cursed Mayweather, who simply smiled an continue to mock his vastly overmatched opponent.
Bayless tried to turn down the temperature before the fateful 6th round, admonishing both corners for continuing to talk. Gotti III complained to Bayless about a shot to the back of the head as his corner attempted to calm him down.
But when Mayweather went back to his routine, Gotti III lost his cool and held him in a collar tie, trapping another arm as though setting up for the type of attack that might be permitted in the MMA cage.