Lee Westwood has given himself yet another chance to make his major breakthrough after carding a flawless opening round at the US PGA Championship.
The 40-year-old was one of only two players to keep a bogey off his card at Oak Hill, returning a four-under 66 to lie one behind a resurgent Jim Furyk and Masters champion Adam Scott.
Tiger Woods faltered late on a weather-interrupted first day, while defending champion Rory McIlroy showed glimpses of his best in an encouraging one-under 69.
Furyk stole the limelight early on as his rediscovered his accuracy off the tee and on the greens in particular, reaching six under before dropping his first shot of the day at the ninth - his last.
The 43-year-old had done enough to earn the clubhouse lead ahead of early pace-setter David Hearn, while Paul Casey made a welcome return to a major leaderboard after a 67 featuring five birdies in seven holes on the front nine.
Woods had arrived on the back of his magnificent seven-shot victory at Firestone, and he looked set to mount a challenge for the lead when he birdied two of his first six holes.
But the world No 1 struggled to maintain his momentum and, after a series of scrambling pars, he dropped his first shot of the day at the fourth - his 13th - and he slipped to one over after fluffing a chip into sand at the ninth and running up a double-bogey six.
McIlroy got off to a flyer with three birdies over the first four holes before he bogeyed the fifth after spinning his approach back into water, and a birdie at nine was undone by bogeys at 10 and 11.
Approaching storms then held up play for 70 minutes before McIlroy clawed one back at the 12th, and he leaked another shot at 17 before holing a clutch putt for par at 18 to remain one under.
Westwood's course management was in fine order as he started with a birdie and added two more at the fifth and ninth to turn in 32.
A run of seven pars was broken by his fourth birdie at 17, and a solid par at the last capped a fine day's work.
Scott, playing in the marquee group alongside Justin Rose and Phil Mickelson, surged to the top of the leaderboard with a sparkling run of five straight birdies from the fourth.
The Australian added another at 14 to take the outright lead, which he relinquished at the 16th before getting up and down from the fairway to save par at the last.
Rose hit back from an opening bogey with four birdies in six holes, but he paid the price for a wayward drive at 18 and the resulting bogey dropped him back to two under.
Mickelson was grateful for the weather delay after he bogeyed the third and ran up a seven at the next, and he picked up four shots in six holes around the turn before stumbling to a six at 18 to close alongside Woods at one over.
Henrik Stenson's excellent recent form continued as he opening with a 68 along with Miguel Angel Jimenez, who reeled off five straight birdies from the second but also had two double-bogeys on his card in an entertaining opener.