Spencer Levin is closing in on his first PGA Tour title after opening up a six-shot lead ahead of the final round of the Phoenix Open.
Much was expected of the 27-year-old after he finished in 13th place at the US Open as an amateur in 2004 but he has now passed the 100-tournament mark still chasing his maiden success.
However, the wait appears to be nearing an end after he followed Friday's round of 63 with a three-under-par 68, including four birdies and one bogey, to move to 17-under-par after 54 holes.
The American is six shots clear of compatriot Webb Simpson, who matched Levin's 68 to move to -11, one ahead of Bubba Watson and John Huh after rounds of 67 and 69 respectively.
Ben Crane, Chris Stroud, Kyle Stanley, Jason Dufner and Greg Chalmers are in a group at nine-under-par, with Phil Mickelson and John Rollins - who at one stage was only three behind the leader - a shot further adrift.
Mickelson hit a 67 that put the four-time major winner into a share of 10th, and afterwards attributed the improvement to a morning practice session with coach Butch Harmon.
"Butch is the best," Mickelson told pgatour.com. "He can identify things so quickly and get you straightened out right away.
"I flew Butch in this morning because yesterday the front nine kind of shook me up.
"We had a really good session, and I was able to feel much more confident.
"I'd like to be further up, but given where I was 27 holes ago, I'm in a really good spot.
"I'm starting to play some good golf, and I'm starting to get a little bit of momentum. I feel great with the putter. Ball-striking today after a session with Butch in the morning feels much better, and I'm excited to get back out and play."