Sydney FC edged Wellington Phoenix 1-0 with a 92nd minute winner from Milos Ninkovic at Westpac Stadium on Sunday.
Kenny Lowe says the key to Perth's A-League success is how well they outsmart their better-resourced rivals.
Melbourne Victory struck deep into injury time to claim all three points on their visit to Adelaide.
An injury-time winner from Marco Rojas has given Melbourne Victory a last-gasp 2-1 A-League victory over Adelaide United at Coopers Stadium.
Brisbane Roar edged past a Mariners side that have now gone 13 straight games without a win.
A first half strike from Thomas Kristensen helped a wasteful Brisbane hold off Central Coast 1-0 and claim their first win of the A-League season.