This is a sub-list from List of doping cases in sport representing a full list of surnames starting with O.
NameCountryEventBanned substance(s)Reference(s)Kirk O'BeeCyclingTestosteroneRobbie O'DavisRugby leagueAnabolic steroidshttp://www.parliament.nsw.gov.au/prod/parlment/hanstrans.nsf/V3ByKey/LA19980625 New South Wales Parliament (Hansard transcript), 25 June 1988. Search keyword "Robbie"Chiedozie OffiahBasketballTest tampering120725 14/08/12 UK Anti-Doping vs Kofi Danso & Chiedozie Offiah Stuart O'GradyCyclingEPO (Self admit)Reza OjaghSwimmingNandroloneMirela OlczakSwimmingMethylhexaneamine2011 Doping Cases Report .Olena OlefirenkoRowingRuslan OleksenkoWrestlingTHCSanctions for doping & Disciplinary sanctions.Andrey OleynikSwimmingCannabisJacques OligerWeightliftingAchiliev OlimbeckWeightliftingMetandienoneSanctioned athletes .Victor Felipe Silveira OliveiraVolleyballSteroids2009-2011 Anti-Doping Rule Violations.Graham OllingRugby leagueAnabolic steroidsLarry OlubamiwuBoxingNaiij Omid Weightlifting MetandienoneEsther OmosehinSwimmingEphedrine2006 Doping Cases Report André OnanaFootball (soccer)FurosemideQazi OnikCricketMethamphetamineNathan O'NeillCyclingPhentermineElizabeth OnuahWeightliftingHydrochlorothiazide, AmilorideOo Mya SandaWeightliftingMetaboliteNiusila Opeloge Weightlifting Omar OrtizFootball (soccer)Oxymetholone, masteronMichal OrzechowskiWrestlingTHCRonnie O'SullivanSnookerCannabisBilal Othman Weightlifting Bilikis OtunlaWeightliftingNandroloneAbdelkrim OuakaliWrestlingFurosemideOuyang KunpengSwimmingClenbuterolArtem OvechkinCyclingRusvelo team hit by three positive tests at Russian national championships .Alistair OvereemMMA and KickboxingTestosterone- EpitestosteroneMita OvervlietWeightliftingNorandrosterone, FurosemideHenry OwensBaseballPerformance-enhancing substance
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