| Australia NSW League 1 U20 | 2023/04/22 07:00 | Inter Lions U20 v Blacktown Spartans U20 | L | 1-0 |
| Australia NSW League 1 U20 | 2023/07/29 07:10 | Hills United FC U20 v Blacktown Spartans U20 | L | 3-2 |
| Australia NSW League 1 U20 | 2023/07/22 07:00 | Blacktown Spartans U20 v Hakoah Sydney City East U20 | L | 1-5 |
| Australia NSW League 1 U20 | 2023/07/15 07:00 | Bonnyrigg White Eagles U20 v Blacktown Spartans U20 | L | 2-0 |
| Australia NSW League 1 U20 | 2023/07/08 07:00 | Blacktown Spartans U20 v Mounties Wanderers U20 | W | 2-0 |
| Australia NSW League 1 U20 | 2023/07/01 07:00 | Blacktown Spartans U20 v Canterbury Bankstown FC U20 | L | 0-2 |
| Australia NSW League 1 U20 | 2023/06/24 07:00 | Blacktown Spartans U20 v St George Saints U20 | L | 0-6 |
| Australia NSW League 1 U20 | 2023/06/17 05:00 | Central Coast United FC U20 v Blacktown Spartans U20 | L | 3-0 |
| Australia NSW League 1 U20 | 2023/06/10 07:00 | Blacktown Spartans U20 v Dulwich Hill U20 | W | 1-0 |
| Australia NSW League 1 U20 | 2023/07/29 07:00 | Inter Lions U20 v Macarthur Rams U20 | D | 1-1 |
| Australia NSW League 1 U20 | 2023/07/22 07:00 | Canterbury Bankstown FC U20 v Inter Lions U20 | W | 0-3 |
| Australia NSW League 1 U20 | 2023/07/15 07:00 | Inter Lions U20 v Dulwich Hill U20 | L | 1-3 |
| Australia NSW League 1 U20 | 2023/07/08 07:00 | Northern Tigers U20 v Inter Lions U20 | L | 1-0 |
| Australia NSW League 1 U20 | 2023/07/01 07:00 | Inter Lions U20 v Hakoah Sydney City East U20 | W | 1-0 |
| Australia NSW League 1 U20 | 2023/06/24 07:00 | SD Raiders U20 v Inter Lions U20 | W | 0-1 |
| Australia NSW League 1 U20 | 2023/06/17 07:00 | Bankstown City Lions U20 v Inter Lions U20 | W | 2-3 |
| Australia NSW League 1 U20 | 2023/06/10 07:00 | Inter Lions U20 v St George Saints U20 | L | 1-4 |