Football players

Player	Team	Age	Compare players
O'Neill O.IrelandMatch data available	Leyton Orient	—	+ Compare
Luke O'NienDefender · EnglandMatch data available	Sunderland	31	+ Compare
O'Regan L.IrelandMatch data available	Shamrock Rovers	21	+ Compare
Adam O'ReillyMidfielder · IrelandMatch data available	Derry City	25	+ Compare
O'Reilly N.EnglandMatch data available	Manchester City	21	+ Compare
O'Reilly T.EnglandMatch data available	Doncaster	—	+ Compare
Matt O'RileyMidfielder · DenmarkMatch data available	Brighton	25	+ Compare
Connor O'RiordanCentre back · IrelandMatch data available	Barnsley	23	+ Compare
Dara O'SheaCentre back · IrelandMatch data available	Ipswich	27	+ Compare
O'Shea J.IrelandMatch data available	Perth Glory	38	+ Compare
O'Sullivan C.IrelandMatch data available	Shamrock Rovers	20	+ Compare
O'Sullivan JohnAttacking midfielder · IrelandMatch data available	Shamrock Rovers	20	+ Compare
Kevin O'TooleFullback · IrelandMatch data available	New York City	27	+ Compare
Razvan OaidaMidfielder · RomaniaMatch data available	UTA Arad	28	+ Compare
Oakes L.EnglandMatch data available	Exeter	19	+ Compare
Dorinel OanceaWingback · RomaniaMatch data available	FC Arges	29	+ Compare
Obafemi M.Striker · IrelandMatch data available	Burnley	—	+ Compare
Obah P.NigeriaMatch data available	Shakhtar Donetsk	—	+ Compare
Nosa ObaretinDefender · ItalyMatch data available	Lorient	23	+ Compare
Onyebuchi ObasiForward · NigeriaMatch data available	Hobro	21	+ Compare
Yuma ObataGoalkeeper · JapanMatch data available	Avispa Fukuoka	24	+ Compare
Samuel ObengStriker · GhanaMatch data available	Albacete	29	+ Compare
OberdanMidfielder · BrazilMatch data available	Okayama	31	+ Compare
Oberleitner Y.Centre back · GermanyMatch data available	Grazer AK	24	+ Compare

Profiles from published lineups. The current club is shown when confirmed; otherwise the latest observed club is labelled.