ANDY RUIZ JR left Anthony Joshua struggling to get to his feet after landing a huge blow to his temple in Saturday’s shock victory for the Mexican.
The left hook sent Joshua to the canvas and was enough to leave him dazed and confused for the rest of the fight.
The shot (10 seconds into the video above) came after Ruiz had picked himself off the canvas but he would send Joshua down a further three times after this stunning blow.
Joshua was cleared of any lasting damage following a post-fight scan, but the scenes in the ring were enough to leave fans worrying for the former champion.
At the end of round five Joshua turned to his corner to ask what round he was in and before going out for the seventh he was heard to ask trainer Rob McCracken “why am I feeling like this?”
Speaking after the fight Joshua admitted to being shaken by the third-round punch from Ruiz but insisted he would come back stronger from the defeat.
“Look out for the end of the year, and what’s next,” Joshua said. “It’s an upset, it’s unexpected. I was the favourite.
“One shot hit me on the top of the dome and rattled me a bit. I tried to stay in there a few more rounds but the better man won.
“I don’t underestimate anyone. He’s a decent puncher, a decent fighter. He was the better man.
“I’ll tidy up, brush off the cobwebs and go again. But it’s a minor setback.”
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Ruiz’s ferocious hand speed and solid chin helped him cause one of the biggest upsets in boxing history when he stopped Joshua in the seventh.
Priced as a 25/1 underdog and labelled a ‘fat slob’ before the fight, Ruiz walked away from New York’s Madison Square Garden with three world heavyweight titles and the chance of a bumper payday if a rematch can be made later this year.