Elon Musk and Meta CEO Mark Zuckerberg’s cage match will be livestreamed on Musk’s Twitter, which is currently rebranding to X, according to a post from Musk early this morning. Musk says the proceeds will go to charity for veterans.

X / Twitter CEO Linda Yaccarino reposted Musk’s tweet with a comment that she is clearing her calendar. According to Zuckerberg, though, Musk has yet to confirm his availability to fight later this month. “I’m ready today,” the Meta CEO posted on Sunday.

This cage match proposal goes back to June, when the two billionaires agreed to the fight via a series of social media posts on their respective platforms (Musk on X / Twitter, Zuckerberg on Instagram). Talk of the fight has been relatively quiet since the end of June, though. In late July, a Reuters story quoted Zuckerberg saying that he wasn’t sure if the fight would “come together.”

Since he initially proposed the cage match, Musk has been seen training with Lex Fridman, a computer scientist versed in Brazilian Jiu-Jitsu, as well as UFC champion George St-Pierre. UFC president Dana White has been mediating between Musk and Zuckerberg.

Meanwhile, talk of the fight follows an apparent attempt by Zuckerberg to rehabilitate his image to win over Musk stans, even as his new social network, Threads, mounts the biggest challenge to X / Twitter’s dominance in the short-form posting sphere.

Whether this fight actually happens or not is still up in the air, especially given Zuckerberg’s comment last month. If it does, Zuckerberg, who has been seen training heavily and even winning MMA fights, remains favored to win on Sports Betting.

Update August 6th, 8:06PM ET: Added response from Zuckerberg.