Rhein Gibson has carded the best round of three Australians to make the cut in the Corales Puntacana Resort and Club Championship but he remains eight strokes off the lead in the PGA event.
Gibson made a sizzling start to his third round with five front-nine birdies to surge up the leaderboard.
The New South Welshman added another birdie at the 17th hole before he bogeyed the 18th to finish with a 5-under par 67.
He is in a share of 14th place at nine-under par with fellow Australian Cameron Percy two shots further back after an even-par round.
Matt Jones is at 5-under par for the tournament after shooting 71.
American Adam Long took over the lead with a stretch of three straight birdies on the back nine and finished with key par saves for an 8-under 64 and a two-shot lead.
Long, coming off a tie for 13th at Winged Foot last week in the US Open, matched the low round of the day and will going for his second PGA Tour victory.
His other was in January 2019 when he birdied the last hole of the Desert Classic to beat Phil Mickelson and Adam Hadwin.