Scoring in today's third round was not at quite the same hot level of the opening two days but it was still impressive and Fox's six under par round of 64 swept him past the five shot overnight leader, Anthony Summers, and, for the moment at least, clear of the field.
Fox, a professional for just on two years, has put together some good results of late including top tens at both the Australian Masters and the NSW Open late last year, but the breakthrough victory in a PGA Tour of Australasia has eluded him.
He did win the Jeep Pro Am event on the Gold Coast in September of last year, where the purse was greater than he is contemplating this week, but to win an actual tour event would mean a lot to him.
"To get my first win on Tour would put me in good stead," said Fox. "There have been a lot of good players to win on this Tour then go onto greater things, it would be nice to be one of them.
"I'm sure there will be some nerves tomorrow morning but that is part of the territory. I am excited to have a chance."
Summers, who led after day one and two, struggled by comparison today, an even par 70 leaving him still very much in contention but giving up his considerable 36 hole lead.
West Australian Stephen Dartnall, a world class amateur before turning professional several seasons ago, is one shot behind Summers with defending champion Brad Kennedy still very much in contention given his experience in winning events in Australasia and Japan. Kennedy is just three shots from the lead.
Aaron Townsend produced the best round of the day 63 to move inside the top ten.