Watch brutal moment Anthony Joshua knocks out Francis Ngannou with savage right hand leaving him needing oxygen

THIS is the moment Anthony Joshua BRUTALLY knocked out by Francis Ngannou.

The former unified heavyweight champion locked horns with the MMA superstar in a lucrative crossover clash in Saudi Arabia early on Sunday morning.

Joshua was razor sharp from the get-go, knocking down the former UFC champ in the first-round with a picture-perfect straight right hand.

AJ floored with the Cameroonian clubber with a huge right hand and left hook.

And he shut his lights out with a hellacious overhand right a few seconds later.

Ngannou lay on the canvas before being helped to his feet.

And the PFL pounder was subsequently given oxygen after being helped to his corner.

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