| Australia - Australia Occidental - Liga sub-20 | 2021/03/27 05:00 | Cockburn City sub-20 v Rockingham City FC sub-20 | W | 1-2 |
| Australia - Australia Occidental - Liga sub-20 | 2020/08/29 05:00 | Rockingham City FC sub-20 v Cockburn City sub-20 | L | 0-3 |
| Australia - Australia Occidental - Liga sub-20 | 2019/08/03 05:02 | Rockingham City FC sub-20 v Cockburn City sub-20 | L | 0-1 |
| Australia - Australia Occidental - Liga sub-20 | 2021/06/19 05:00 | Rockingham City FC sub-20 v Sorrento sub-20 | L | 0-4 |
| Australia - Australia Occidental - Liga sub-20 | 2021/06/12 05:00 | Rockingham City FC sub-20 v Bayswater City sub-20 | L | 0-2 |
| Australia - Australia Occidental - Liga sub-20 | 2021/06/05 05:00 | Rockingham City FC sub-20 v Floreat Athena sub-20 | L | 0-1 |
| Australia - Australia Occidental - Liga sub-20 | 2021/05/29 05:00 | Balcatta sub-20 v Rockingham City FC sub-20 | L | 1-0 |
| Australia - Australia Occidental - Liga sub-20 | 2021/05/08 05:00 | Perth SC sub-20 v Rockingham City FC sub-20 | L | 5-0 |
| Australia - Australia Occidental - Liga sub-20 | 2021/05/01 05:00 | Inglewood Utd sub-20 v Rockingham City FC sub-20 | L | 6-0 |
| Australia - Australia Occidental - Liga sub-20 | 2021/04/17 05:00 | Perth RedStar FC sub-20 v Rockingham City FC sub-20 | L | 5-2 |
| Australia - Australia Occidental - Liga sub-20 | 2021/04/10 05:00 | Rockingham City FC sub-20 v Armadale sub-20 | W | 1-0 |
| Australia - Australia Occidental - Liga sub-20 | 2021/06/19 05:00 | Floreat Athena sub-20 v Cockburn City sub-20 | L | 2-0 |
| Australia - Australia Occidental - Liga sub-20 | 2021/06/12 05:00 | Sorrento sub-20 v Cockburn City sub-20 | W | 1-2 |
| Australia - Australia Occidental - Liga sub-20 | 2021/06/05 05:00 | Perth RedStar FC sub-20 v Cockburn City sub-20 | D | 1-1 |
| Australia - Australia Occidental - Liga sub-20 | 2021/05/29 05:00 | Cockburn City sub-20 v Inglewood Utd sub-20 | D | 1-1 |
| Australia - Australia Occidental - Liga sub-20 | 2021/05/22 05:00 | Gwelup Croatia SC sub-20 v Cockburn City sub-20 | D | 2-2 |
| Australia - Australia Occidental - Liga sub-20 | 2021/05/08 05:00 | Cockburn City sub-20 v Armadale sub-20 | L | 2-3 |
| Australia - Australia Occidental - Liga sub-20 | 2021/05/01 05:00 | Cockburn City sub-20 v Bayswater City sub-20 | L | 0-3 |
| Australia - Australia Occidental - Liga sub-20 | 2021/04/17 05:00 | Cockburn City sub-20 v Perth SC sub-20 | D | 1-1 |