Mark Zuckerberg has been spotted competing in a jiu-jitsu competition in Redwood City, California, this weekend, after revealing last year that he'd gotten into mixed martial arts.
The tech giant could be seen attempting to wriggle free from his opponent's hold, before getting frustrated after the referee thought he'd 'tapped out' of the match, giving his opponent the win.
However, despite the disappointment, he went on to win gold and silver medals for the Gi and No-Gi disciplines.
