SCOTTSDALE, Ariz. -- Bill Haas fired a six-under 65 Thursday to grab a share of the lead with the first round of the Phoenix Open suspended due to darkness.
Tom Gillis, Tom Lehman and Jason Bohn also shot 65 to share the overnight lead at the TPC of Scottsdale.
The start of the round was delayed four hours due to heavy frost. After the long delay, everyone from the first wave of tee times was able to finish their opening rounds, while the first groups of the second wave completed their first nine holes.
With more frost in the forecast on Friday, the resumption of the first round has been pushed back nearly two hours to 11:30 a.m. (et).
Former U.S. Open champion Lucas Glover carded a five-under 66 and was joined in fifth place by Ben Crane and Chris Couch.
Two-time champion and local favorite Phil Mickelson opened with a 67 and is among six players tied for eighth place. Among that group is Dustin Johnson, who parred the first, then birdied his next four holes before play was stopped for the day.
Mickelson opened and closed his round with bogeys. In between, he carded six birdies.
"Started out with a bogey and ended with a bogey, but I thought I played pretty well today," stated Mickelson, the 1996 and 2005 champion. "I made a lot of birdies in between. I probably didn't score as low as I should have."
Haas, who has three top-10 finishes in his first three starts this year, played the back nine first. He parred his first three holes then took advantage of the par-fives on the back nine.
He birdied the 13th and 15th, both par-fives, before making three more pars to turn at minus-two. Haas birdied three of the first four holes on the front nine to jump five-under.
Haas grabbed a share of the lead with a birdie on the par-four ninth. He has played 14 rounds on the PGA Tour this year and has been under par 13 times.
"The first few weeks I've really been driving the ball very well," Haas said. "I didn't have the greatest warm-up this morning. With the cold, it took me a little while to warm up."
Gillis got off to a fast start with birdies on the first, third and fourth. He parred the next five holes. Around the turn, Gillis birdied 10 and 14 to get within one of the lead. He climbed to six-under with a birdie on the 18th.
Lehman, who won the Senior PGA Championship last year, posted birdies on the fifth and seventh. After dropping a shot on the ninth, he bounced right back with a birdie on No. 10.
The 1996 British Open champion moved to three-under with a birdie on the par- three 12th. Lehman converted three consecutive birdie efforts from the 15th to grab a piece of the lead.
Bohn, like Haas, started on the back nine. Bohn birdied the 13th and followed with birdies on 14 and 15. He made the turn at minus-four after a birdie on the 18th.
The 37-year-old birdied the second to get within one of the lead. However, Bohn stumbled to a bogey on the fifth. He rebounded with a birdie on No. 6 and closed with a birdie on the ninth to end at minus-six.
NOTES: Defending champion Hunter Mahan was in the afternoon wave and was even- par through five holes...The last frost delay on the PGA Tour also happened at this event in 2008...Jhonattan Vegas, who is the early leader in the FedEx Cup race, managed a one-under 70...Greg Chalmers withdrew due to a hand injury.