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PlayerClub/teamCountryPosition
Oniangué, PrinceReims (FRA)FranceFranceDefender
Onica, AlexandruZaria (MDA) / MoldovaMoldovaMoldovaMidfield
Onisiwo, KarimMainz (GER)AustriaAustriaForward
Ono, YujiSint-Truiden (BEL)JapanJapanMidfield
Onomah, JoshuaTottenham (ENG) / England U19EnglandEnglandMidfield
Ontiveros, LuisMexico U19MexicoMexicoMidfield
Ontiveros, JavierSpain U19SpainSpainForward
Onuachu, PaulMidtjylland (DEN)NigeriaNigeriaForward
Onur AtikAnkara (TUR) / Turkey FUTTurkeyTurkeyDefender
Onur AyıkAkhisar (TUR)TurkeyTurkeyMidfield
Onur BayramoğluEskişehirspor (TUR)TurkeyTurkeyMidfield
Onur KıvrakTrabzonspor (TUR) / TurkeyTurkeyTurkeyGoalkeeper
Onur MengiIstanbul Üniversitesi (TUR) / Turkey FUTTurkeyTurkeyDefender
Onzia, LenieArsenal (ENG) / Belgium WOCOBelgiumBelgiumMidfield
Oosterwijk, JariTwente (NED)NetherlandsNetherlandsForward
Opanasenko, YevhenZorya (UKR)UkraineUkraineDefender
Opare, DanielAugsburg (GER)GhanaGhanaDefender
Openda, LoisBelgium U17BelgiumBelgiumForward
Opladen, JolinaGermany WU17GermanyGermanyDefender
Oprea, OliviaOlimpia Cluj (ROU) / Romania WOCORomaniaRomaniaDefender
Oprea, RoxanaSpratzern (AUT) / Romania WOCORomaniaRomaniaGoalkeeper
O'Prey, EimhearGlentoran (NIR) / Northern Ireland WU19Northern IrelandNorthern IrelandForward
Orachev, MikiLevski (BUL) / Bulgaria U21BulgariaBulgariaMidfield
Oral, AidosKazakhstan U17KazakhstanKazakhstanMidfield
Orbán, LucasLevante (ESP)SpainSpainDefender
Ordets, IvanShakhtar Donetsk (UKR) / UkraineUkraineUkraineDefender
Öreglaki, NorbertHaladás (HUN) / Hungary FUTHungaryHungaryDefender
Orellana, FabiánCelta (ESP)ChileChileForward
Oremo, JohanGefle (SWE)SwedenSwedenForward
Organova, PolinaRussia WU17RussiaRussiaMidfield
Orhan ŞamKasımpaşa (TUR)TurkeyTurkeyDefender
Origi, DivockLiverpool (ENG) / Belgium / Belgium U21BelgiumBelgiumForward
Origo, JulesGibraltar U19GibraltarGibraltarForward
Oriol RieraDeportivo (ESP)SpainSpainForward
Oriol RomeuSouthampton (ENG)SpainSpainMidfield
Oriol RosellGuimarães (POR)SpainSpainMidfield
Orji, EbereFerencváros (HUN)NigeriaNigeriaForward
Orkan ÇinarGaziantepspor (TUR) / Turkey U21TurkeyTurkeyMidfield
Orlandić, VukMontenegro U19MontenegroMontenegroDefender
Orlova , Valentina Zvezda 2005 (RUS) / Russia WOCORussiaRussiaDefender
Örnblom, FilipSweden U17SwedenSwedenDefender
Ørnskov, MartinBrøndby (DEN)DenmarkDenmarkMidfield
Oroș, CristianAstra (ROU)RomaniaRomaniaDefender
Oroz, MaiteAthletic (ESP) / Spain WU19SpainSpainMidfield
Orr, ChloeNorthern Ireland WU17Northern IrelandNorthern IrelandMidfield
Orsi, KalvinAberdeen (SCO)ScotlandScotlandForward
Oršoja, VajdaSerbia WU19 / Serbia WOCOSerbiaSerbiaDefender
Ortiz, CésarAltach (AUT)SpainSpainDefender
OrtizInter (ESP) / Spain FUTSpainSpainDefender
Ortiz, CelsoAZ (NED)ParaguayParaguayMidfield