| Youth career | |||
|---|---|---|---|
| Leicester Celtic | |||
| Lourdes Celtic | |||
| St. Kevin's Boys | |||
| Senior career* | |||
| Years | Team | Apps | (Gls) |
| 1996–2003 | Blackburn Rovers | 185 | (27) |
| 2003–2006 | Chelsea | 81 | (14) |
| 2006–2009 | Newcastle United | 69 | (5) |
| 2009–2014 | Fulham | 130 | (15) |
| 2014–2015 | Melbourne City | 15 | (1) |
| 2015 | Shamrock Rovers | 9 | (0) |
| Total | 489 | (62) | |
| International career | |||
| 1998–2012 | Republic of Ireland | 100 | (8) |
| Managerial career | |||
| 2021– | Shelbourne | ||
| *Club domestic league appearances and goals | |||