Johnny Walker v Waldo Cortes-Acosta reportedly the new UFC Vegas 124 main event on 7 November
The heavyweight fight would replace Sean Brady v Gabriel Bonfim at the Meta APEX after Brady pulled out injured and no short-notice opponent was found for Bonfim.

UFC Vegas 124 has a new heavyweight headliner, journalist Laerte Viana reported on X: Johnny Walker against Waldo Cortes-Acosta at the Meta APEX in Las Vegas. The UFC has not announced the fight.
Sean Brady pulled out of his main event against Gabriel Bonfim with an injury, and Viana said no replacement opponent was found for Bonfim in time, so the card gets a new main event instead. Tatiana Suarez against Virna Jandiroba at strawweight is the co-main event.
It would be Walker's second fight at heavyweight. The Brazilian (23-10) knocked out Mick Parkin in the first round of his debut in the division at UFC 332 in Salt Lake City. He had told talkSPORT he expected his next fight to come in December, Bloody Elbow reported, and he had wanted Marcin Tybura next.
Cortes-Acosta (17-4) is No. 6 in the UFC heavyweight rankings, while Walker is not yet in the top 15. Cortes-Acosta stopped Derrick Lewis in the second round at UFC 324 in January, lost a unanimous decision to Alexander Volkov at UFC 328 in May and last fought Curtis Blaydes in September.

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