Anthony Joshua knocks out Jake Paul in the sixth round of their fight in Miami

Anthony Joshua inflicted a knockout on Jake Paul after enduring frustrating early rounds against the YouTube star in Miami.

Britain's two-time world heavyweight champion struggled to pin down Paul in the early rounds but finally ended the fight with a huge right hand in the sixth round - one that left his opponent with a broken jaw.

Paul, who had found it hard to keep his footing throughout the fight, toppled down by the ropes and the referee waved it off as he rose unsteadily to his feet.

But Joshua admitted afterwards that it "wasn't the best performance", with the 36-year-old widely expected to stop his novice opponent much sooner in the bout, which had been scheduled to go eight rounds at the Kaseya Center.

The YouTube star had made a typically brash entrance, sporting sunglasses as he was joined by a rap artist on his ring walk, but Paul exuded nervous energy when the first bell rung, back peddling for much of the first round.

Paul did land a solitary left hand to the delight of the American crowd as Joshua pushed out probing jabs while attempting to find his range.

Joshua displayed more aggression in the second round, landing a crunching shot that drew a rueful smile from Paul, and then unloaded a swift combination as the YouTuber sought refuge on the ropes.

But Joshua, who had not fought since a knockout loss to Daniel Dubois in September 2024, was struggling to land his power punches and had to withstand a cheeky uppercut from Paul in the third.

A looping hook from Paul caught Joshua by surprise in the fourth, causing fleeting embarrassment rather than pain, but it was Paul who was left wincing after he took a low blow.

Paul's resistance unravelled in the fifth as he wilted to the canvas after a flurry of punches from Joshua and the referee issued a count.

Joshua moved in menacingly and a right hand dropped Paul more heavily, with the bell sounding as Joshua swung in spiteful punches.

But Paul was ruthlessly halted by Joshua in the next round as he toppled to the canvas following another exchange and then, when Paul clambered to his feet, Joshua delivered a fight-ending right hand.