| Ausztrál Western Australia League - U20 | 2021/03/27 05:00 | Cockburn City - U20 v Rockingham City FC U20 | W | 1-2 |
| Ausztrál Western Australia League - U20 | 2020/08/29 05:00 | Rockingham City FC U20 v Cockburn City - U20 | L | 0-3 |
| Ausztrál Western Australia League - U20 | 2019/08/03 05:02 | Rockingham City FC U20 v Cockburn City - U20 | L | 0-1 |
| Ausztrál Western Australia League - U20 | 2021/06/19 05:00 | Rockingham City FC U20 v Sorrento - U20 | L | 0-4 |
| Ausztrál Western Australia League - U20 | 2021/06/12 05:00 | Rockingham City FC U20 v Bayswater City - U20 | L | 0-2 |
| Ausztrál Western Australia League - U20 | 2021/06/05 05:00 | Rockingham City FC U20 v Floreat Athena - U20 | L | 0-1 |
| Ausztrál Western Australia League - U20 | 2021/05/29 05:00 | Balcatta - U20 v Rockingham City FC U20 | L | 1-0 |
| Ausztrál Western Australia League - U20 | 2021/05/08 05:00 | Perth SC - U20 v Rockingham City FC U20 | L | 5-0 |
| Ausztrál Western Australia League - U20 | 2021/05/01 05:00 | Inglewood Utd - U20 v Rockingham City FC U20 | L | 6-0 |
| Ausztrál Western Australia League - U20 | 2021/04/17 05:00 | Perth RedStar FC - U20 v Rockingham City FC U20 | L | 5-2 |
| Ausztrál Western Australia League - U20 | 2021/04/10 05:00 | Rockingham City FC U20 v Armadale - U20 | W | 1-0 |
| Ausztrál Western Australia League - U20 | 2021/06/19 05:00 | Floreat Athena - U20 v Cockburn City - U20 | L | 2-0 |
| Ausztrál Western Australia League - U20 | 2021/06/12 05:00 | Sorrento - U20 v Cockburn City - U20 | W | 1-2 |
| Ausztrál Western Australia League - U20 | 2021/06/05 05:00 | Perth RedStar FC - U20 v Cockburn City - U20 | D | 1-1 |
| Ausztrál Western Australia League - U20 | 2021/05/29 05:00 | Cockburn City - U20 v Inglewood Utd - U20 | D | 1-1 |
| Ausztrál Western Australia League - U20 | 2021/05/22 05:00 | Gwelup Croatia SC - U20 v Cockburn City - U20 | D | 2-2 |
| Ausztrál Western Australia League - U20 | 2021/05/08 05:00 | Cockburn City - U20 v Armadale - U20 | L | 2-3 |
| Ausztrál Western Australia League - U20 | 2021/05/01 05:00 | Cockburn City - U20 v Bayswater City - U20 | L | 0-3 |
| Ausztrál Western Australia League - U20 | 2021/04/17 05:00 | Cockburn City - U20 v Perth SC - U20 | D | 1-1 |