Dubois, the IBF heavyweight champion, dominated the bout from the opening round, knocking Joshua down twice before landing a decisive right hand in the fifth round that sent Joshua face down on the canvas.

Despite Joshua’s attempt to rise, the referee called an end to the fight, sealing Dubois’ victory and Joshua’s shocking defeat.

"Are you not entertained?" Dubois shouted post-fight, to huge cheers in the packed-out stadium.

"I'm a gladiator. I am a warrior to the bitter end. I want to get to the top level of this sport and reach my potential."

Joshua's bid to become a three-time champion and return to the division's top table ended in the most dramatic and unexpected fashion.