Ryan Palmer fired a seven-under 65 Thursday stroke lead with the first round of the Phoenix Open suspended due to darkness.

Palmer earned his third PGA Tour title at the 2010 Sony Open. He missed the cut at this event last year.

Webb Simpson, a two-time winner last year, carded a six-under 65 and is alone in second place. Harrison Frazar, Kevin Na, Chez Reavie, Derek Lamely and Jarrod Lyle are tied for third after posting five-under 66s.

They were joined there by Bubba Watson, Spencer Levin and Jason Dufner. Watson and Levin both finished 15 holes, while Dufner is through 13.

The start of the first round at TPC Scottsdale was delayed one hour by frost. The round was suspended by darkness at 8:05 p.m. (et) and will resume Friday 9:30 a.m. The second round will start as scheduled at 9:30 a.m.