Brisbane Roar suffered their heaviest A-League defeat at the hands of Newcastle Jets, while Central Coast Mariners got a rare win.
A 1-0 win over Newcastle Jets helped Perth Glory open up an unassailable lead over Sydney FC and become A-League premiers.
Joel Chianese, Dino Djulbic and Neil Kilkenny were on target as A-League leaders Perth Glory eased to a 3-0 win at Central Coast Mariners.
Central Coast Mariners had Jem Karacan sent off in the second half as they slipped to a 1-0 defeat against Adelaide United on Sunday.
Having worked for both Manchester United and Central Coast Mariners since December, Mike Phelan wants to maintain this arrangement.
Central Coast Mariners claimed just their second win of the season as Melbourne Victory also triumphed, Kosta Barbarouses scoring twice.
Former Australia women's coach Alen Stajcic was appointed after the Mariners sacked Mike Mulvey following Saturday's humiliating 8-2 loss.
Wellington Phoenix beat Central Coast Mariners 8-2 in the A-League on Saturday, a defeat that led to the sacking of head coach Mike Mulvey.
Central Coast Mariners remain adrift at the bottom of the A-League after a hammering by Wellington Phoenix.
Alex Lopez scored a pair of superb goals as Brisbane Roar edged a frenetic affair against Central Coast Mariners.