Undefeated world boxing champ Floyd “Money” Mayweather Jr. gets dropped during a basketball game when a player known as the “Bone Collector” crosses him up.

Mayweather has never been knocked out or even knocked down in a boxing match throughout his entire career. But in a basketball exhibition game, streetball basketball player Larry Williams handed Mayweather his first drop.

During a recent charity basketball game, streetball basketball player Williams, also known as “Bone Collector,” did what other world boxing champs were not able to do for the longest time: drop the undefeated champ Mayweather Jr.

The rare scene was uploaded by FightHype.com on its official YouTube channel.

In the short video clip, the crowd went crazy as soon as Williams dribbled in front of Mayweather and crossed his legs up for his infamous crossover. The boxing champ immediately fell down on the court, and to top it off, Williams nailed the three in another defender’s face.

Williams seemed aware of what he had just accomplished and was very proud of what he did, MMA Mania reported. “If you don’t respect it, you will get collected,” Williams said.

“Floyd Maywather is the richest ankle I have ever collected,” Williams added.

Despite being crossed up and humiliated in front of the fans, Mayweather managed to be a good sport and just laughed it off. The boxing champ has kept his distance from Williams for the rest of the ball game.

Floyd Mayweather Conor McGregor Floyd Mayweather and Conor McGregor, pictured during a news conference after their fight on Aug. 26, 2017 at T-Mobile Arena in Las Vegas, might have shattered the PPV record set by Mayweather and Manny Pacquiao two years ago. Photo: Getty Images

One of Mayweather’s previous opponents, UFC former champ-champ Conor McGregor, also has a video clip in which the charismatic MMA fighter can be seen playing basketball at the world-famous Madison Square Garden in New York.

McGregor proudly boasted that he “can do both” after hitting a long jumpshot just seconds after a grappling match with one of his trainers.

But one world boxing champion, who also once shared the boxing ring with Mayweather, has taken basketball to another level. Eight-division title holder Manny Pacquiao played a couple of professional basketball games. And if that is already surprising, the fact that Pacquiao had invested his money on a basketball team is even more eye-popping.

Mayweather has not fought inside the boxing ring since August 2017 when he handed McGregor his first and only professional boxing loss via technical knockout.

Mayweather Pacquiao Roach Floyd Mayweather Jr. and Manny Pacquiao pose with a WBC championship belt as Pacquiao's trainer Freddie Roach looks on during a news conference at the KA Theatre at MGM Grand Hotel & Casino on April 29, 2015 in Las Vegas, Nevada. Photo: Getty