Mark Zuckerberg said he is “not holding breath” because of an upcoming cage fight with his biggest rival Elon Musk, the BBC reports.

In a post on the new social media app Threads, Meta’s owner said he had suggested the clash take place on August 26.

In a post on X (ex. Twitter), Elon says he’s been training “all day”, but Zuckerberg was quick to refute his claims, writing that Mr. Musk had not yet confirmed.

The two became direct competitors in July with the release of Threads.

Musk cast further doubt over the upcoming fight, saying the exact date was still in flux. He also said he is likely to need surgery on his neck and upper back.

The two social media moguls have not stopped challenging each other in recent months. On Sunday, Elon said their fight would be streamed live on his social media platform X.

He reaffirmed that all proceeds from the match will go to veterans charities.