American D.A. Points fired an eight-under 64 to grab a two-shot lead over Todd Fischer, Tom Pernice Jr. and Aaron Baddeley after two rounds of the Las Vegas Open on Friday.
Points, with one top-10 finish this season and fighting to get into the top 125 money winners to keep his Tour card, mixed seven birdies and an eagle with a single bogey at the TPC Summerlin course -- one of two layouts being used at the $4 million event -- to move to 14-under 129.
Rain interruptions and fading light meant 22 of the 142-strong field will have to finish their second rounds on Saturday.
Fischer, who sits 165th on the money list just one place behind Points, returned a bogey-free card for the second consecutive day, shooting a spotless seven under-65 at Summerlin to join Pernice at 12-under 131.
Baddeley, already a winner this season collecting his third career title with a victory at the Heritage, had looked poised to grab a share of the lead until a double bogey on the 18th left the Australian with a six-under 65.
Pernice is also battling to secure a spot but the 47-year-old American has his eye on a place in the season-ending Tour Championships, an invitational only event limited to the PGA's top 30 money winners.
One under through 11 holes, Pernice rocketed up the leaderboard with a scorching finish to his round carding four straight birdies from the 12th followed by an eagle at the 16th for his 65.
Wes Short Jr., who beat Jim Furyk in playoff last year for his maiden PGA win, stepped up his title defense with a six-under 65 at the TPC Canyons course to sit just four back of the leader heading into the weekend.
World number two Furyk, a three-time winner in Las Vegas and the highest ranked player in the tournament, had a four-under 68 to get to seven-under 136.
Briton David Howell the world number 14 and the second highest ranked player in the field, stayed in contention with bogey-free six-under 65 that included four birdies and an eagle to join a large group, that included Fred Funk, at six back at eight-under 135.
American Chris DiMarco, the world number 15, had a four-under 68 to narrowly escape the guillotine and make the weekend with five-under-138.
Fan favorite John Daly, who has managed just one top 25 finish this season, withdrew with one hole to play after he followed up a triple bogey on the 16th with bogey on 17 to leave him four-over on the day.