Will Claxton shot a 2-under 70 in windy conditions Thursday to take a one-stroke lead over Matt Jones and Harris English after the second round of the PGA Tour Qualifying Tournament.
The top 25 in the six-round event at PGA West will earn 2012 PGA Tour cards.
Claxton and Jones played the TPC Stadium Course, while English was at the Nicklaus Tournament Course.
Billy Hurley III was 8 under after a 71 on the Nicklaus course.
David Duval was tied for 81st at even par after a 72 on the Nicklaus course.
The event sees players compete on both the Nicklaus Tournament Course and TPC Stadium Course at PGA West.
Claxton added his 70 to an opening 64 to move to 10 under, with Jones and English his nearest challengers after their rounds of 68 and 67, respectively.
First-round co-leader Daniel Summerhays dropping off the pace set as a 1-over 73 took him back to 7 under.
Shaun Micheel, the 2003 PGA Champion, started brightly with a 5-under 67 in his first round but dropped back to a tie for 47th after a 75.
David Duval, the former British Open champion and world No. 1, and 2002 PGA Champion Rich Beem both matched their first-round scores of level-par 72 to be tied in 81st place.
Two-time US Open winner Lee Janzen began with a 71 but a 75 in his second round dropped him to 2 over, and down to 108th.