John O'Brien History
| Clubs | Country | Position | NO | From | To | Loan |
|---|---|---|---|---|---|---|
 AFC Ajax | Netherlands | Midfielder | 16 | 01/07/1998 | 01/07/2005 |
| Country | Position | From | To |
|---|---|---|---|
 United States | Midfielder | 01/01/1998 | 31/12/2006 |
NO = Player number .
| Clubs | Country | Position | NO | From | To | Loan |
|---|---|---|---|---|---|---|
AFC Ajax | Netherlands | Midfielder | 16 | 01/07/1998 | 01/07/2005 |
| Country | Position | From | To |
|---|---|---|---|
United States | Midfielder | 01/01/1998 | 31/12/2006 |
NO = Player number .