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PlayerClub/teamCountryPosition
O'Sullivan, LauraWales WOCOWalesWalesGoalkeeper
Osvaldo , PabloPorto (POR) / ItalyItalyItalyForward
Osváth, AttilaVasas (HUN) / Hungary / Hungary U21HungaryHungaryDefender
Osyra, KornelNieciecza (POL)PolandPolandDefender
Otamendi, NicolásMan. City (ENG)ArgentinaArgentinaDefender
OtávioPorto (POR)BrazilBrazilMidfield
Otermin Abella, RosaSpain WU17SpainSpainForward
Oto'o, RandalWesterlo (BEL)GabonGabonDefender
Ottele, TomKäerjéng (LUX) / Luxembourg U21LuxembourgLuxembourgGoalkeeper
Ottesen, SölviWuhan Zall (CHN) / IcelandIcelandIcelandDefender
Otuwe, GiftMinsk (BLR)NigeriaNigeriaMidfield
Ouadi, SouliemaneBelgium FUTBelgiumBelgiumForward
Ouahabi, LeilaBarcelona (ESP) / Spain WOCOSpainSpainDefender
Ouali, IdirKortrijk (BEL)FranceFranceMidfield
Ouali, MimounUE Santa Coloma (AND) / Andorra FUTAndorraAndorraDefender
Ouaneh, PeterFrance U19FranceFranceDefender
Ouattara, Check AdamSwitzerland U17SwitzerlandSwitzerlandDefender
Oude Kotte, ThomasVitesse (NED)NetherlandsNetherlandsDefender
Oukadi, FaridFrance FUTFranceFranceDefender
Oulare, ObbiWillem II (NED) / Belgium U21BelgiumBelgiumForward
Õunap, JanarTulevik (EST) / Estonia U21EstoniaEstoniaDefender
Ounas, AdamBordeaux (FRA)FranceFranceMidfield
Õunpuu, KethyEstonia WOCOEstoniaEstoniaMidfield
Ouon, EdwinLevadiakos (GRE)RwandaRwandaDefender
Ouwejan, ThomasAZ (NED)NetherlandsNetherlandsMidfield
Ovdiychuk, OlhaKharkiv (UKR) / Ukraine WOCOUkraineUkraineForward
Ovenden, RhyleWales U19WalesWalesMidfield
Overmeire, KillianLokeren (BEL)BelgiumBelgiumMidfield
Ovesen, Kim RuneVegakameratene (NOR) / Norway FUTNorwayNorwayForward
Oviedo, BryanSunderland (ENG)Costa RicaCosta RicaDefender
Ovono, DidierOostende (BEL)GabonGabonGoalkeeper
Ovsyannikov, Denys Lokomotiv (UKR) / Ukraine FUTUkraineUkraineForward
Owens, NiallBallinamallard (NIR) / Northern Ireland U17Northern IrelandNorthern IrelandDefender
Oxford, ReeceEngland U19EnglandEnglandDefender
Oxlade-Chamberlain, AlexArsenal (ENG) / EnglandEnglandEnglandMidfield
Oyarzabal, MikelSpain U21SpainSpainForward
Oyewole, AdessoyeOrenburg (RUS)RussiaRussiaDefender
Ozan KabakTurkey U17TurkeyTurkeyDefender
Ozan ÖzençAntalyaspor (TUR)TurkeyTurkeyGoalkeeper
Ozan TufanFenerbahçe (TUR) / TurkeyTurkeyTurkeyMidfield
Özbiliz, ArasBeşiktaş (TUR) / ArmeniaArmeniaArmeniaMidfield
Ožbolt, AlenDomžale (SVN) / Slovenia U21SloveniaSloveniaForward
Özcan, RamazanLeverkusen (GER) / AustriaAustriaAustriaGoalkeeper
Ozcan, AhmetSion (SUI)SwitzerlandSwitzerlandDefender
Özcan, SalihKöln (GER) / Germany U19GermanyGermanyMidfield
Ozdemir, MerveAzerbaijan WU19AzerbaijanAzerbaijanForward
Ozdemir, UlkuAzerbaijan WU17AzerbaijanAzerbaijanMidfield
Ozdemir, HaticeAzerbaijan WU19AzerbaijanAzerbaijanMidfield
Özdemir, Berat AyberkTurkey U19TurkeyTurkeyMidfield
Özdemir, BurakTurkey FUTTurkeyTurkeyForward