Head to Head
| Australia New South Wales Premier League | 2021/02/26 08:45 | Marconi Stallions v Sydney FC U21 | W | 0-1 |
| Australia New South Wales Premier League | 2020/10/09 08:00 | Marconi Stallions v Sydney FC U21 | W | 0-3 |
| Australia New South Wales Premier League | 2020/03/08 07:30 | Sydney FC U21 v Marconi Stallions | L | 0-4 |
| Australia New South Wales Premier League | 2019/06/09 05:00 | Marconi Stallions v Sydney FC U21 | L | 5-2 |
| Australia New South Wales Premier League | 2019/03/23 08:00 | Sydney FC U21 v Marconi Stallions | L | 0-2 |
| Australia New South Wales Premier League | 2018/07/29 05:00 | Marconi Stallions v Sydney FC U21 | L | 4-1 |
| Australia New South Wales Premier League | 2018/05/05 05:00 | Sydney FC U21 v Marconi Stallions | D | 2-2 |
Home History
| Australia New South Wales Premier League | 2021/05/09 05:00 | Rockdale Ilinden FC v Sydney FC U21 | L | 4-1 |
| Australia New South Wales Premier League | 2021/05/02 08:30 | Sydney FC U21 v Wollongong Wolves | L | 3-5 |
| Australia New South Wales Premier League | 2021/04/25 05:00 | Blacktown City v Sydney FC U21 | L | 3-0 |
| Australia New South Wales Premier League | 2021/04/18 08:30 | Sydney FC U21 v Apia L Tigers | L | 2-3 |
| Australia New South Wales Premier League | 2021/04/11 08:30 | Sydney FC U21 v Sutherland Sharks | D | 2-2 |
| Australia New South Wales Premier League | 2021/04/02 08:00 | Manly Utd v Sydney FC U21 | L | 2-0 |
| Australia New South Wales Premier League | 2021/03/28 07:30 | Sydney FC U21 v Sydney Olympic | L | 1-2 |
| Australia New South Wales Premier League | 2021/03/20 08:00 | Mt Druitt Town Rangers v Sydney FC U21 | D | 1-1 |
Away History
| Australia FFA Cup Qualifying | 2021/05/11 09:45 | NWS Spirit FC v Marconi Stallions | W | 0-2 |
| Australia New South Wales Premier League | 2021/05/07 09:00 | Manly Utd v Marconi Stallions | D | 1-1 |
| Australia New South Wales Premier League | 2021/05/01 08:00 | Marconi Stallions v Blacktown City | L | 2-4 |
| Australia FFA Cup Qualifying | 2021/04/27 09:00 | Marconi Stallions v Sutherland Sharks | W | 1-0 |
| Australia New South Wales Premier League | 2021/04/24 08:00 | Marconi Stallions v Mt Druitt Town Rangers | L | 0-2 |
| Australia New South Wales Premier League | 2021/04/17 08:00 | Marconi Stallions v Sydney Olympic | D | 0-0 |
| Australia FFA Cup Qualifying | 2021/04/14 09:30 | Marconi Stallions v Central Coast United FC | W | 3-0 |
| Australia New South Wales Premier League | 2021/04/11 06:45 | Apia L Tigers v Marconi Stallions | D | 1-1 |