| 1. Round | 10/10/1998 | Canberra Cosmos | - | Adelaide Sharks | 1:3 |  |
|||
| 2. Round | 17/10/1998 | Adelaide Sharks | - | South Melbourne Lakers | 1:1 | ||||
| 3. Round | 24/10/1998 | Gippsland Falcons | - | Adelaide Sharks | 1:0 | ||||
| 5. Round | 07/11/1998 | Adelaide Sharks | - | Newcastle Breakers | 3:1 | |
|||
| 6. Round | 13/11/1998 | Marconi-Fairfield Stallions | - | Adelaide Sharks | 4:0 | ||||
| 7. Round | 21/11/1998 | Adelaide Sharks | - | UTS Sydney Olympic | 4:1 | ||||
| 9. Round | 05/12/1998 | Adelaide Sharks | - | Carlton Blues | 1:1 | ||||
| 13. Round | 02/01/1999 | Adelaide Sharks | - | Northern Spirit | 2:3 | ||||
| 14. Round | 08/01/1999 | Brisbane Strikers | - | Adelaide Sharks | 2:1 |
Australia