Perth Glory recaptured the form of last season's A-League as Tony Popovic's team swatted aside Melbourne City at AAMI Park.
The City Football Group is now valued at $4.8billion after selling a lucrative stake to technology investment firm Silver Lake.
Melbourne City beat Western Sydney Wanderers in a lively game at Bankwest Stadium thanks to a couple of goals from Jamie Maclaren.
Roy O'Donovan and Jamie Maclaren hit hat-tricks on a pulsating Sunday in the A-League, which ended with Sydney FC beating Melbourne Victory.
A-League leaders Melbourne City moved three points clear in first after comfortably accounting for Central Coast Mariners.
Melbourne City moved top of the A-League on Sunday, while Central Coast Mariners registered their first win of the new season.
Western United suffered a first A-League loss despite a numerical advantage against Melbourne City, as Perth Glory beat Wellington Phoenix.
Goals from Australia internationals Rhyan Grant and Jamie Maclaren helped Sydney FC and Melbourne City to wins in Sunday's A-League action.
Western Sydney Wanderers opened their A-League season with a win over Central Coast Mariners, while the Melbourne derby ended in a 0-0 draw.
Former Paris Saint-Germain boss Erick Mombaerts has been named coach of A-League side Melbourne City.