Eagle-eyed fans spot Mark Zuckerberg losing his mind at UFC 300

Mark Zuckerberg was left gobsmacked by Max Holloway's spectacular knockout win over Justin Gaethje at UFC 300.

Holloway looked to be well on his way to a decision-win on Sunday morning after a barn-storming bout with Gaethje for the BMF belt.

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But rather than flinging his arms up in triumph and circling out of harm's way, 'Blessed' opted to put himself straight in the line of fire.

As the ten-second clacker went off, Holloway pointed to the ground, signalling that he wanted to trade hell for leather down the home straight.

Gaethje, true to form, was keen to oblige as both men let their hands fly.

During the furious exchange, the Hawaiian brawler landed a massive right hand that sent Gaethje crashing to the canvas face-first.

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UFC president Dana White described it as the 'biggest holy s*** moment ever' and Zuckerberg's reaction at cage-side summed up that sentiment perfectly.

Eagle-eyed fans spotted the Facebook founder with his hands on his head and his mouth wide open as Holloway scored the walk-off knockout.

In the immediate aftermath, White said of the fight: "It was incredible. That fight sucked the f***ing life out of everyone tonight.

"The next two fights everyone was sat there looking dead, it was a massive adrenaline dump.

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"People always ask me what I do, I sell holy s*** moments for a living.

"That was the ultimate holy s*** moment of all time. If you were at home, if you were in a bar or you were live tonight there is no bigger holy s*** than that.

"That's why Max Holloway is beloved - and Gaethje. How many times have you seen a fight when you know the guy is winning, they click the ten-second thing and then the guy puts his hands up and just moves around?

"He's got the fight won and he's in there with one of the most dangerous f***ing fighters in the business and he says 'let's do this' and they both oblige.

"One second left and a knockout like that, that's like movie s***."

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