Jamie Maclaren is now second on the all-time A-League top scorers list, while Melbourne Victory ended a six-game wait for a win.
Substitute Bruce Kamau scored twice in the space of four minutes for Western Sydney, but they were unable to hold on for victory.
Brisbane Roar battled to a draw with Western Sydney Wanderers but an A-League victory is proving elusive.
Craig Noone scored twice and set up another goal as Melbourne City won for a sixth A-League game running.
Western Sydney Wanderers strengthened their grip on second place in the A-League with a comfortable win over Perth Glory.
Kwame Yeboah grabbed an 84th-minute winner for Western Sydney Wanderers, who survived a late scare to triumph at home.
Western Sydney Wanderers avoided a third successive defeat, while Wellington Phoenix secured back-to-back victories.
A-League leaders Central Coast Mariners moved four points clear at the summit as they downed Perth Glory on Tuesday.
Melbourne Victory fought back from 3-1 down to draw level with 10-man Western United, only to concede a stoppage-time winner.
Melbourne Victory are rooted to the foot of the A-League table after Wellington Phoenix grabbed a point against Western Sydney Wanderers.