Gyms
CountriesOrillia Fight Team
Orillia, CanadaOrion MMA Academy
Tønsberg, NorwayOrzeł Namysłów
Namysłów, PolandOšimas
Šakiai, LithuaniaOslo Fight Center
Oslo, NorwayOświęcimski Klub MMA
Oświęcim, PolandOtautahi Lost Boyz MMA
Phillipstown, New ZealandOtokojuku
Ichikawa, JapanOttawa Academy of Martial Arts
Ottawa, CanadaOude Westen Gym
Rotterdam, Netherlands