Demetrious Johnson Shows Off His Skills At ONE Championship’s LA Open Workouts

MMA . was at the Club LA gym in downtown Los Angeles for the first-ever ONE Championship open workouts, which featured former long-reigning UFC Flyweight Champ Demetrious Johnson. “Mighty Mouse” will debut in his new organization against Yuya Wakamatsu on March 31 at Ryogoku Kokugikan in Japan. SUBSCRIBE for more from MMA coverage: #DemetriousJohnson #MightyMouse #OneChampionship #Flyweight #UFC #YuyaWakamatsu #Workout #Training #Boxing #BJJ #