They edge Waitakere on goal difference, who required a late penalty from Dylan Stansfield to take a point from their clash with Eastern Suburbs.
Suburbs opened the scoring through Sean Lovemore in the 33rd minute, but they couldn't cling to what would have been a vital win, leaving them in a mid-table logjam.
Suburbs sit in fourth, but just one point ahead of a chasing pack, with Hawke's Bay and Canterbury all jostling for the fourth and final playoff spot.
In their first game without suspended manager Brett Angell, Hawke's Bay held off last-placed Tasman United 3-2.
Four goals were scored in the first 20 minutes as Hawke's Bay took a 3-1 lead, and while Tasman pulled one back shortly after halftime, they weren't able to find an equaliser.
Canterbury's win was more comprehensive, easing to a 4-1 victory over the Wellington Phoenix Reserves.
Two goals to Stephen Hoyle were added to by Andre De Jong and an own goal to stay in the thick of the race.
The youthful Phoenix could have pulled within a point of the playoff spots with a win, but the competition's rules do not allow them to take part in the playoffs.