Mark Zuckerberg Could Win Pro Fight In UFC or ONE, BJJ Superstar Mikey Musumeci Says

If you expect Mark Zuckerberg to fight a professional fighter and get slaughtered, you may be in for a rude awakening ... ONE Championship star Mikey Musumeci has trained with the Meta boss on several occasions, and says Zuck would 100% win a fight.

"I was pretty shocked. [Mark's] a grinder. He has that grind in him. The second I saw that I said, 'Okay, he can be very good at MMA or jiu-jitsu' because first of all, he has the highest IQ, but he's also tough as f***!" Mikey told TMZ Sports.

It's high praise coming from Musumeci ... a 5x IBJJF world champion and current ONE Championship flyweight grappling champ. He's quite literally the best in the world!

Mikey and Mark are friends who not only train together ... but also talk when they aren't working out.

We doubled down ... asking Musumeci if he really believed Zuck could "hang with a professional fighter?"

"100%. 100%, and I think he could win."

Of course, we asked Mikey the question because all signs point to Zuckerberg, now that the Elon Musk fight is seemingly done, fighting against an actual pro fighter in a top MMA promotion.

"Not holding my breath for Elon, but I'll share details on my next fight when I'm ready," Mark said on Threads.

"When I compete, I want to do it in a way that puts a spotlight on the elite athletes at the top of the game. You do that by working with professional orgs like the UFC or ONE to pull this off well and create a great card."

There's more ... we also talked to ONE Championship CEO Chatri Sityodtong -- who is also friends with Mark -- about the billionaire's foray into MMA.