Elon Musk says he may need to get surgery before a proposed "cage match" with Mark Zuckerberg.

The two tech billionaires seemingly agreed to an in-person face-off in late June. It's unclear if a physical fight will actually end up happening, but Musk and Zuckerberg have continued to fuel interest in the potential match through online jabs at one another — most recently on Sunday, when Musk said the fight would be live-streamed on his social media site X, formerly known as Twitter.