Anthony Joshua insisted he is a "fighter for a life" with a "hunger that never dies" amid speculation over his future after another defeat to Oleksandr Usyk.

Usyk outclassed the Briton at the Tottenham Hotspur Stadium last year, claiming the WBA, IBF and WBO belts.

The Ukrainian was challenged more in the rematch in Jeddah on Saturday, but produced a near-perfect display in the later rounds to defend his world heavyweight champion status with a split-decision victory.

One judge scored the fight 115-113 in Joshua's favour, while another had the same result for Usyk, with the third decisively awarding Usyk a 116-112 success.

An enraged Joshua picked up the belts after the fight before throwing them down, prior to returning to the ring to launch a bizarre yet impassioned rant on his background and Usyk's skills.

Joshua has now lost three of his past five fights, all of them for world titles, and could not hide his emotions at the post-fight press conference.

"It's really, really hard for me to say I'm proud of myself," he said. "I'm upset, really, deep down in my heart."

On his actions after the conclusion of the fight, Joshua added: "When you try and do things from your heart, not everyone is going to understand," Joshua explained.

"It was just from the heart. I knew I was mad at myself. Not at anyone, just myself. I was like 'I got to get out of here because I'm mad'.

"When you're angry you might do stupid things. Then I realised this is sport. I came back and did the right thing.

"I'm a fighter for life. That hunger never dies. Fighter for life."

Eddie Hearn, the promoter for Joshua, labelled his fighter an idol within world sport as he echoed the sentiments that the 32-year-old will not retire.

"This is someone who I want my kids to look up to," Hearn added. "If he's out in public, he gives everyone his time. He's one of the nicest guys. He's a competitor and winner.

"What you saw was raw emotion. A real person who wanted to win badly."