Two goals from veteran striker Besart Berisha helped Western United claim a 3-1 victory over Melbourne Victory in their A-League derby.
Adelaide United let a lead slip at home to Wellington Phoenix, while Adam Le Fondre inspired Sydney FC against Western United.
Adelaide United are up to third in the A-League after beating Melbourne Victory 3-1, while second-placed Sydney FC won 3-1 at Perth Glory.
Newcastle Jets and Adelaide United secured valuable A-League away wins over Western United and Central Coast Mariners, respectively.
Sunday's A-League action brought more frustration for Brisbane Roar and Melbourne Victory, while Adelaide United had reason to celebrate.
Sydney FC were frustrated by a defeat to rivals Western Sydney Wanderers, while Riley McGree inspired Adelaide United to an A-League win.
Goals from Australia internationals Rhyan Grant and Jamie Maclaren helped Sydney FC and Melbourne City to wins in Sunday's A-League action.
Sydney FC, last season's Grand Final winners, commenced the new A-League campaign with a thrilling win away at Adelaide United.
Western United have appointed Mark Rudan, while Adelaide United turned to Dutchman Gertjan Verbeek.
Perth Glory are through to the A-League's Grand Final after an incredible semi-final victory over Adelaide United at HBF Park.