Football players

Player	Team	Age	Compare players
Ceadach O'NeillForwardMatch data available	Arsenal	18	+ Compare
Gary O'NeillMidfielder · IrelandMatch data available	Shamrock Rovers	31	+ Compare
Ollie O'NeillMidfielder · IrelandMatch data available	Leyton Orient	23	+ Compare
Luke O'NienDefender · EnglandMatch data available	Sunderland	31	+ Compare
Luke O'ReganDefender · IrelandMatch data available	Shamrock Rovers	21	+ Compare
Adam O'ReillyMidfielder · IrelandMatch data available	Derry City	25	+ Compare
Nico O'ReillyMidfielder · EnglandMatch data available	Manchester City	21	+ Compare
Tommi O'ReillyMidfielder · EnglandMatch data available	Doncaster	22	+ 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
Jay O'SheaMidfielder · IrelandMatch data available	Perth Glory	38	+ Compare
Cory O'SullivanDefender · IrelandMatch data available	Shamrock Rovers	20	+ Compare
John O'SullivanAttacking 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
Liam OakesMidfielder · EnglandMatch data available	Exeter	19	+ Compare
Dorinel OanceaWingback · RomaniaMatch data available	FC Arges	29	+ Compare
Michael ObafemiStriker · IrelandMatch data available	Burnley	26	+ Compare
Prosper ObahMidfielder · NigeriaMatch data available	Shakhtar Donetsk	22	+ 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

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