Anthony Joshua fell crumbling victim to one of the most astonishing upsets in heavyweight boxing history.
The Mexican who was supposed to be battered stripped Britain’s golden Olympian of his four world titles. Andy Ruiz Jnr became the first heavyweight from his country to win the world heavyweight title.
And he turned boxing’s past and future on its head.
This shock was almost as seismic as Mike Tyson’s defeat by Buster Douglas. Not quite as massive since Joshua has not achieved such greatness as Iron Mike but remarkable because it was delivered by a Mexican warrior we had foolishly under-rated because of his unathletic appearance.
And Tyson did not surrender the way Joshua did after one minute and 27 seconds of the seventh round.
Joshua, with however much of his self-belief is left, will enforce his rematch clause but there can be no certainty that the outcome will be any different. Even though that fight will be in London.
Whether he will ever fight his nemesis Deontay Wilder, let alone for the cherished undisputed championship, is hardly a question worth putting now.
Just like Klitschko at Wembley, Ruiz let Joshua escape. He took the fourth off and the shadow boxing ended in a nothing round. Joshua reasserted himself with a big right in the fifth and opened up again with a round-winning flourish.
With his head seeming to clear, Joshua went to work behind that long left jab. But Ruiz came bustling back again to rock him with lefts and rights. Both had slowed badly by now.
From his slough, Ruiz came barnstorming again, to terrible effect. Twice more he clubbed Joshua to the canvas.