Sydney United came out on the attack from the very start as they took the game to the Territorians who were left trying to hold back a rampant Sydney United attack.
It took just four minutes for the hosts to take the lead as a corner allowed Glen Trifiro to find Mirjan Pavlovic who was able to head home easily giving Sydney United a vital lead in the only match of the opening round.
That seemed to wake Canberra FC up as the visitors looked to sure up their defenses and hold firm against a dangerous looking Sydney United attack.
Canberra FC were attacking on the counter and it turned out to work well for the Capital Football side as a horrible error from Paul Henderson in the Sydney United goal allowed the visitors to get back on level terms.
Henderson was stranded on the edge of his area attempting to clear the ball and was caught out as the ball fell to Adam Spaleta who returned it over his head for the equalizer.
Sydney United looked to come back from conceding that frustrating goal but Canberra FC held firm defensively as the teams went to the break on level terms.
Mark Rudan sent his Sydney United side out from the break determined to get back in front as they pushed for goals dominating possession but Canberra FC stood firm defensively keeping them out.
In the 60th minute Sydney United finally broke through for their second goal as Matthew Bilic was able to head home the cross and put the hosts in front.
It seemed Sydney United's worst enemy was their own decision making as they made life tough with Daniel Barac shown a straight red card for an excessive challenge on to Daniel Bennett reducing the hosts to ten.
That allowed Canberra FC time and space as they dominated the final stages of the match keeping the home fans nervous but Rudan made the defensive changes necessary to hold out and head to next week's semi-finals.