Head to Head
| Australia New South Wales Premier League | 2021/03/07 05:00 | Sydney United 58 v Sydney FC U21 | L | 5-2 |
| Australia New South Wales Premier League | 2020/09/06 05:00 | Sydney United 58 v Sydney FC U21 | L | 4-2 |
| Australia New South Wales Premier League | 2019/07/21 05:00 | Sydney United 58 v Sydney FC U21 | W | 0-2 |
| Australia New South Wales Premier League | 2019/04/27 03:00 | Sydney FC U21 v Sydney United 58 | L | 1-3 |
| Australia New South Wales Premier League | 2018/06/16 09:45 | Sydney FC U21 v Sydney United 58 | L | 0-3 |
| Australia New South Wales Premier League | 2018/03/31 08:30 | Sydney United 58 v Sydney FC U21 | L | 5-3 |
| Australia New South Wales Premier League | 2017/07/16 06:00 | Sydney United 58 v Sydney FC U21 | L | 2-1 |
| Australia New South Wales Premier League | 2017/04/22 09:45 | Sydney FC U21 v Sydney United 58 | L | 0-4 |
Home History
| Australia New South Wales Premier League | 2021/05/16 08:30 | Sydney FC U21 v Marconi Stallions | D | 3-3 |
| 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 |
Away History
| Australia New South Wales Premier League | 2021/05/16 05:00 | Sydney United 58 v Sydney Olympic | W | 3-1 |
| Australia New South Wales Premier League | 2021/05/08 07:15 | Apia L Tigers v Sydney United 58 | W | 2-3 |
| Australia New South Wales Premier League | 2021/05/02 05:00 | Sydney United 58 v Manly Utd | W | 5-0 |
| Australia New South Wales Premier League | 2021/04/25 05:00 | Rockdale Ilinden FC v Sydney United 58 | D | 0-0 |
| Australia New South Wales Premier League | 2021/04/17 09:00 | Mt Druitt Town Rangers v Sydney United 58 | D | 0-0 |
| Australia FFA Cup Qualifying | 2021/04/14 09:30 | Sydney United 58 v Bankstown City Lions FC | L | 1-3 |
| Australia New South Wales Premier League | 2021/04/11 05:00 | Sydney United 58 v Wollongong Wolves | D | 0-0 |
| Australia New South Wales Premier League | 2021/04/05 06:00 | Sydney United 58 v Bulls FC Academy | L | 1-5 |