Adelaide United boosted their hopes of progressing straight through to the A-League semi-finals with a 1-0 win over Brisbane Roar.
Craig Goodwin's 23rd-minute strike was the difference between the two sides, with victory leaving Adelaide a point behind Central Coast Mariners in the race for second place.
The Roar had a golden chance to level from the penalty spot six minutes before half-time, but Joseph Champness' effort was kept out by a low save from James Delianov after Ryan Kitto handled in the area.
Sydney FC and Macarthur are level with Adelaide on 35 points as the season nears an exciting climax.
Brisbane remain in sixth, the final quarter-final place, despite their defeat as seventh-placed Western Sydney Wanderers were thumped 5-1 by Perth Glory.
The Glory prevailed thanks to a masterclass from Andy Keogh, who scored four goals for Perth to move them three points behind Brisbane. Joel Chianese rounded out the win deep into injury time.
WHAT A STATEMENT! Keogh's four strikes and a Chianese cherry on top make it a big win for Glory! pic.twitter.com/ljoF5Qs9zv— Perth Glory FC (@PerthGloryFC) May 16, 2021
The day's other game saw Wellington Phoenix go within three points of the Roar as they held league leaders Melbourne City to a 2-2 draw.
Jamie Maclaren's free-kick nine minutes from time put City 2-1 ahead to seemingly secure maximum points, only for Tomer Hemed's second in the 88th minute to ensure a share of the spoils.