American golfers Steve Flesch and Scott Verplank remain tied for the lead heading into Saturday's fourth round of the five-round Las Vegas, Nevada Invitational.
Flesch and Verplank fired 6-under-par, 66s on Friday for a three-round total of 23-under-par, 192 - one of the lowest 54-hole scores in PGA tour history.
Australian Stuart Appleby is alone in third place, one shot off the lead, after a superb 63.
American Jerry Kelly tied a PGA record with birdies on seven straight holes. The string came after Kelly bogeyed two of the first four holes, which leaves him tied for seventh place, five shots off the lead.
South Korean golfer Se Ri Pak has played her way to a two-shot lead on the same day that defending champion Annika Sorenstam of Sweden qualified for the World Golf Hall of Fame.
Pak finished the long rain-delayed 36-hole day Friday at 7-under-par 137 - two shots ahead of five golfers, including Sorenstam.
The Swedish star only needed to complete 18 holes to officially make it 10 full years on the tour, the last step for her to meet the requirements for the Hall of Fame. She will become the 100th member when she is inducted October 20, along with Nick Price, Chako Higuchi and Leo Diegel.
Dana Quigley and Hale Irwin are tied for the lead of the Turtle Bay Golf Championship in Kahuku, Hawaii on the main island of Oahu heading into the second round, Saturday.
Quigley and Irwin shot 4-under-par, 68s Friday in the Champions Tour event for players age 50 and over.