Estadísticas del jugador contra cada club rival
| Equipo | PJ | V | E | D | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Skonto | 3 | 1 | 0 | 2 | 0 | 0 | 1 | 0 |
 Shamrock Rovers | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Legia Warszawa | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Žalgiris | 2 | 0 | 1 | 1 | 1 | 0 | 0 | 0 |
 Bray Wanderers | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Drogheda United | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Dundalk | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Dinamo Minsk | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Jeunesse d'Esch | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Marítimo | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Galway United | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Cork City | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bohemians | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Limerick | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Shelbourne | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 ÍBV | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Sligo Rovers | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Derry City | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| St Patrick's | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 UCD | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Ger O'Brien ha marcado 4 goles en 170 partidos profesionales en 2 clubes. Ger O'Brien ha disputado 2 partidos en la Champions League 2014/2015. Entre los clubes por los que ha pasado — St Patrick's, Bohemians — Ger O'Brien fue más prolífico en el Bohemians, donde anotó 2 goles en 36 partidos. Ger O'Brien mide 179 cm, pesa 73 kg.
