Brisbane Roar lead Australia's A-League after three rounds despite losing 1-0 to Melbourne Victory in Ange Postecoglou's farewell game this weekend before taking over as national coach.

A second-half James Troisi strike through the legs of Roar keeper Michael Theo was enough to secure Victory's first win of the season Friday, and give Postecoglou a fitting sendoff before he takes over from Holger Osieck as Socceroos head coach.

Western Sydney Wanderers are one point behind Roar in the standings after a 2-0 victory over Sydney FC before a 40,000 full house.

Japanese star Shinji Ono scored a stunning individual goal and assisted in another in the Wanderers victory on Saturday.

The influential Ono laid on a teasing free kick for Italian Iacopo La Rocca to head home the opening goal in the 11th minute, and then uncorked a brilliant goal of his own.

He flicked the ball over the defence and then rifled home into the far corner for his first goal and Wanderers' first A-League victory.

While Ono was spearheading Western Sydney, Sydney FC were without their Italian superstar Alessandro Del Piero, who has an injured calf.

In Saturday's other game, league champions Central Coast Mariners downed Adelaide United 1-0, with the winning goal coming in just the second minute from Nick Fitzgerald.

Youngster Jamie Maclaren scored his first A-League goal and goalkeeper Danny Vukovic pulled off a flying late save in Perth Glory's 1-0 win over Melbourne Heart in Perth on Sunday.

The Wellington Phoenix and Newcastle Jets remain winless this season after a scoreless draw in Napier, New Zealand.