Meta boss Mark Zuckerberg got into a heated exchange with a referee at his first-ever Brazilian jiujitsu tournament — then went on to surprise martial-arts fans by winning gold and silver medals.

Controversial 'Joker' star Joaquin Phoenix wears his Karate Gi as he walks barefoot through a dirty alleyway to his Karate Class in Los Angeles. Fresh off the highly successful opening weekend of ...

Winning medals runs in the family for Charlie and Travis Ratcliff -- siblings who are making a name for themselves in mixed ...