Sean O'Hair continued his recent resurgence to earn a one-shot lead after the opening round at the EDS Byron Nelson Championship.
O'Hair, who has finished no worse than 15th in his past four starts, tamed cool and windy morning conditions to card seven birdies in a five-under-par 65 at Cottonwood Valley.
"All in all I feel pretty good with my ball-striking, and it was just a really nice round of golf," said O'Hair, who headed defending champion Brett Wetterich and Dane Anders Hansen by one shot.
Phil Mickelson, who controversially was allowed to play despite missing the pro-am, finished poorly for a one-under 69, a score matched by Vijay Singh.
"The wind was really brutal at the beginning," O'Hair continued. "That first hole, I nailed a drive, hit it 300-yards plus, and I still had a 5-wood in, so it was playing pretty tough out there."
O'Hair, 24, scored his lone PGA Tour victory at the John Deere Classic nearly two years ago, shortly after firing coach Steve Dahlby, but after a mediocre season last year - 62nd on the money list - he decided to re-hire his old instructor.
"Immediately, the chemistry was there, and things started clicking," O'Hair said of the reunion. "I've been working hard for the past year-and-a-half on my backswing and it really hasn't been making too much sense."