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- ONE Championship CEO Chatri Sityodtong says Mark Zuckerberg is a "legit" fighter.
- There's a "wide disparity in skill level and fitness level" between Zuckerberg and Musk, he said.
- Zuckerberg, for one, fights "in a very serious, world-class training environment," Chatri said.
A prominent martial-arts CEO says he's seen Mark Zuckerberg fight, and that Elon Musk should be really nervous about his chances in the ring.