People United States of America Jake O'Brien peoplepill id: jake-obrienJO 7 views today 7 views this weekAmerican martial artistJake O'BrienBiographyNewsListsAlso ViewedListsJake O'Brien is in following listsBy field of workNotable American athletesGender:Male, Born in:Years 1970 to 1999By work and/or countryNotable American AthletesGender:Male, Born in:Years 1970 to 1999Notable American Mixed martial artistsGender:Male, Born in:Years 1970 to 1999From our partnersSponsoredJake O'Brien