| Date | R | Home v Away | - | |
|---|---|---|---|---|
| 08/26 04:58 | - | Balcatta - U20 v Mandurah City U20 | D | 0-0 |
| 08/20 05:05 | - | Bayswater City - U20 v Mandurah City U20 | L | 5-1 |
| 08/05 05:05 | - | Floreat Athena - U20 v Mandurah City U20 | L | 5-1 |
| 07/08 04:55 | - | Armadale - U20 v Mandurah City U20 | L | 4-0 |
| 07/01 05:03 | - | Cockburn City v Mandurah City U20 | L | 1-0 |
| 06/24 05:00 | - | Mandurah City U20 v Inglewood Utd - U20 | L | 0-1 |
| 06/17 05:00 | - | Mandurah City U20 v Stirling Lions SC | L | 0-1 |
| 06/10 05:03 | - | Mandurah City U20 v Sorrento | L | 1-5 |
| 05/13 05:02 | - | Mandurah City U20 v Balcatta - U20 | L | 0-2 |
| 04/29 05:02 | - | ECU Joondalup SC v Mandurah City U20 | L | 2-0 |
| 04/22 05:03 | - | Mandurah City U20 v Floreat Athena - U20 | L | 0-6 |
| 04/15 05:02 | - | Subiaco AFC U20 v Mandurah City U20 | L | 1-0 |
| 04/02 04:45 | - | Mandurah City U20 v Armadale - U20 | W | 3-1 |
| 03/25 07:00 | - | Mandurah City U20 v Perth Glory FC | L | 0-4 |
| 03/18 04:49 | - | Inglewood Utd - U20 v Mandurah City U20 | L | 4-2 |
| 03/11 05:00 | - | Stirling Lions SC v Mandurah City U20 | D | 1-1 |
| 03/04 07:39 | - | Sorrento v Mandurah City U20 | D | 0-0 |
| 02/26 08:55 | - | Joondalup United SC v Mandurah City U20 | L | 2-1 |
| 02/18 09:59 | - | Perth SC - U20 v Mandurah City U20 | L | 6-0 |