Going low is nothing new for Rhein Gibson, who plucked a course-record eight-under 64 from Royal Pines Resort to be in contention at the halfway stage of the Australian PGA Championship on the Gold Coast.
The 29-year-old Lismore-born Oklahoma-based professional made world headlines when he shot the lowest round recorded - a 55 around his home course of River Oaks three years ago.
Sweden's David Lingmerth battled the difficult conditions, grinding out a four-under 68 to be the halfway leader on three-under, one shot ahead of Englishman Mark Foster (69-73) and four other players, including overnight leader Zander Lombard (67-75).
But the honours were with Gibson, who is a shot further back after producing seven birdies, two eagles and three bogeys in his amazing round, which he rated better than his memorable 55.
"Under tournament conditions, this course is tough. The greens are firm, they're like cricket pitches and they're not very true either, because they're so new," he said. "To be able to do that on a Friday to make the cut and get back in contention, it's probably better than 55."
Only 11 players in the field were under par.
After his horrendous opening-round 84 American Brandt Snedeker's putter again deserted him on the grainy Royal Pines greens.
Backing up with a 75, the world No.38 was one of several big names to miss the cut, with Rod Pampling, Robert Allenby (11-over), Masters winner Peter Senior (10-over), Nick O'Hern (10-over) and defending champion Greg Chalmers (7-over).