Piercy keeps a 2-shot lead until darkness at Safeway (The Associated Press)

View photosMoreBill Haas follow his shot from the 18th fairway of the Silverado Resort North Course during the second round of the Safeway Open PGA golf tournament Friday, Oct. 14, 2016, in Napa, Calif. (AP Photo/Eric Risberg)NAPA, Calif. (AP) -- Bill Haas faced a 10-shot deficit before hitting his first shot of the new PGA Tour season. He has done enough in two days to make up ground in the Safeway Open.

Haas endured a rough, rainy start at Silverado and turned in a 2-under 70 that at least got him into the mix. Because of the 2 hour, 36-minute delay Friday, the second round could not be completed.

Haas was 8-under 136, one shot better than rookie J.J. Spaun (67). Phil Mickelson (69) was at…