Why Mark Zuckerberg was in attendance at UFC Vegas 61 and the event closed to the public and media became crystal clear on Thursday. UFC announced on Thursday a partnership with Meta, the company Zuckerberg founded that included Facebook and Instagram. The fight promotion’s streaming platform, Fight Pass, will offer live and on-demand MMA events in virtual reality, LFA 144, which streams live on Fight Pass on Friday, will be the first event to offer a 180-degree panoramic view of the event through Meta’s Horizon Worlds app