Anthony Joshua launched a bizarre yet impassioned rant after losing the heavyweight title re-match to Oleksandr Usyk on split decision in Jeddah on Saturday.

The Ukrainian retained his heavyweight belts with the victory but it was Joshua who stole the show after the bout.

The 32-year-old Briton grabbed the microphone in the ring and spoke for four minutes in an expletive-filled rant despite it being Usyk's moment of glory.

Joshua's tirade included moments of respect along with disrespect aimed at his opponent and seemed to lack coherence or direction.

"I don't care about strong, I care about skills," Joshua said. "Being strong doesn’t win boxing … skills win boxing.

"You’re not strong, how did you beat me? I got skilled. I’ve had character and determination."

Joshua, who appeared to throw two belts out of the ring amid the chaos, quickly changed his tune and added: "Usyk, one hell of a f***ing fighter, let’s give him a round of applause.

"That’s just emotion. If you knew my story, you would understand my passion. I ain’t no f***ing amateur boxer from five years old that was an elite prospect from a youth.

"I was going to jail. I got bail and started training my ass off, because if I got sentenced, I wouldn’t be able to fight."

He continued: "The f***ing passion we put into this s***, man. This guy, to beat me tonight, maybe I could have done better, but it shows the levels of hard work he must have put in, so please give him a round of applause as our heavyweight champion of the world. Woo! Motherf*****!

"I'm not a 12-round fighter. Look at me! I'm a new breed of heavyweights. All them heavyweights — Mike Tyson, Sonny Liston, Jack Dempsey.

"'Oh, you don’t throw combinations like Rocky Marciano'. Cause I ain't f***in' 14 stone, that’s why! I'm 18 stone and I'm heavy! It's hard work! This guy here is a phenomenal talent."

Promoter Eddie Hearn weighed in on Joshua's confusing rant, arguing he was frustrated after Usyk was "too good" for him.

"You saw the reaction from AJ, and that was from a human who wanted to win so badly with so much pressure on his shoulders," Hearn told Sky Sports Box Office.

"I think he just exploded because he lost and he was devastated, and he's given everything to try and win this fight. He couldn't win the fight, he's a competitor, he's a winner but this man's too good.

"It was an incredible performance. He’s just too good, and there’s no shame in it. The 10th round, the 11th round, that’s why he’s the pound-for-pound number one."