Summary of previous matches between the team of Marconi Stallions and the team of Sydney United since 2008-03-02:
                            Marconi Stallions won 12 matches against Sydney United, lost 16 matches, and 5 matches were draws.
                        
| Time | League | Home Team | Score | Away Team | 
|---|---|---|---|---|
| 2018-06-23 | NSW Premier League | Sydney United | 3 : 1 | Sutherland Sharks | 
| 2018-06-16 | NSW Premier League | Sydney FC (Youth) | 0 : 3 | Sydney United | 
| 2018-06-09 | NSW Premier League | Sydney United | 0 : 2 | Rockdale City Suns | 
| 2018-06-03 | NSW Premier League | Blacktown City Demons | 0 : 1 | Sydney United | 
| 2018-05-26 | NSW Premier League | Sydney United | 2 : 2 | Marconi Stallions | 
| 2018-05-19 | NSW Premier League | Sydney United | 0 : 2 | Sydney Olympic | 
| 2018-05-16 | Australia FFA Cup | Rockdale City Suns | 2 : 1 | Sydney United | 
| 2018-05-12 | NSW Premier League | Manly United | 1 : 1 | Sydney United | 
| 2018-05-05 | NSW Premier League | Sydney United | 1 : 0 | A.P.I.A. Leichhardt Tigers | 
| 2018-04-29 | NSW Premier League | Bonnyrigg White Eagles | 2 : 1 | Sydney United |