The series was played over three weeks culminating in the 2020 A-League Grand Final, where Sydney FC won a record fifth championship 1–0 against Melbourne City.
Third-placed Wellington Phoenix won their most recent clash against sixth-placed Perth Glory, ahead of this elimination final between the two.
[6] Alessandro Diamanti scored a free kick goal, and won 1–0 for Western United, sending them through to the semi-final against Melbourne City.
[12] City who looked to have scored the opening goal by Harrison Delbridge, was ruled out offside until the match ended goalless after 90 minutes.
In extra time, Rhyan Grant scored in the 100th minute with his second Grand Final goal and won the match for Sydney winning a record fifth championship.