England's Paul Casey leads the fog-delayed Frys.com Open on eight under par with Tiger Woods looking set to make the cut after two months rest.
Casey, the world number 20 and highest-ranked player at the event, holds a one-shot lead after carding a 64.
Woods, who mixed six birdies with three bogeys to finish one under par, said: "I putted better. That was a positive."
With 53 players unable to finish their second rounds because of fading light, the cut is projected to be level par.
Former world number one Woods last played at the US PGA Championship, where he missed the cut, and he has since dropped outside of the top 50 in the rankings for the first time in almost 15 years.
However, he said: "My 'feels' are coming back. All the balls are pin high which is a very good sign."
Woods is seven shots behind Casey, who has also struggled with injuries this season, going into the weekend.
TIGER WOODS IN 2011
- US PGA missed cut
- WGC Invitational T37th
- Players Ch'ship withdrew
- Masters T4th
- Arnold Palmer T24th
- WGC Cadillac T10th
- WGC Match Play T33rd
- Farmers Insurance T44th
Casey, who is still recovering from a toe injury, decided to return to the PGA Tour for the next two weeks to complete the minimum 15 events required to maintain his card for next season.
"The toe isn't 100%," the 34-year-old admitted. "I've had it since late May.
"It was a joint in my foot which wasn't allowing my foot to move correctly and that put pressure on my toe.
"My goal right now is to get healthy, and I am probably about 70% [fully fit] - 2011 has been a frustrating year."
Casey began the second round three shots back, but rolled in six birdies in his opening nine holes, the only blemish to his round coming on the 13th.
"The back nine, my front nine, the greens were perfect," he added. "You're not going to get greens any better than that."
America's Bud Cauley sank five birdies in his 66 to move into second on seven under par.
South Africa's Ernie Els is also seven under but he has two holes of his second round to play.
