ONE Champion

Mark Grappling

Watch: Mark Zuckerberg Trains MMA Under Grappling Champ Mikey Musumeci

Mark Zuckerberg shared a clip of him training MMA with grappling world champion Mikey Musumeci The young CEO hinted at a potential MMA debut Facebook founder Mark Zuckerberg is laser-focused on constantly improving his grappling and MMA skills. He is now working on his craft under the tutelage of a celebrated grappler and reigning ONE