https://apnews.com/article/elon-musk-mark-zuckerberg-cage-fight-28598abc5be6959f01c1b0079211a360 > Elon Musk says his potential in-person fight with Mark Zuckerberg would be streamed on his social media site X, formerly known as Twitter. > The two tech billionaires seemingly agreed to a “cage match” face-off in late June. Zuckerberg is actually trained in mixed martial arts, and the Facebook founder posted about completing his first jiu jitsu tournament earlier this year.