Rory McIlroy went joint top of the leaderboard before play was suspended during round three of the US PGA Championship because of a thunderstorm.
The Northern Irishman hit five birdies in eight holes before a bogey on the ninth left him tied with co-overnight leader Vijay Singh on six under.
Joint overnight leader Tiger Woods had a terrible time, finishing on one under after three bogeys in just seven holes.
The third round will resume at 12:40 BST on Sunday at Kiawah Island.
Woods's poor round saw him tumble down the leaderboard to a tie for 11th after he went into the third day leading on four under alongside Fiji's Singh and Sweden's Carl Pettersson.
The American's day started badly when he missed a three-foot birdie chance at the 390-yard first and then hooked into the crowd off the next tee.
He struck a spectator, who he handed a signed glove to, before making further bogeys at the short fifth and 579-yard seventh.
Woods, who is chasing a 15th victory in one of golf's four majors, faces an eight-foot putt for par on the eighth when play resumes.
By contrast, McIlroy will be looking to build on his tremendous start after picking up birdies on his opening two holes to leap up the leaderboard.
The 2011 US Open winner's impressive front nine before play was suspended included a remarkable par save on the par-four third.
McIlroy sensibly took a penalty drop after he drove his ball into a tree and then pitched to within seven feet of the hole before making the resulting putt.
"It was a great start, the start that I was looking to get off to," said the 23-year-old.
"It's nice going into the final day, well hopefully, if we get it finished, in a great position.
"It being 27 holes, I definitely don't mind that. I don't mind if it takes a while to get done. I am just in a great position going into Sunday and that's all I can really ask for."
Just three weeks on from his collapse at the Open, Australia's Adam Scott is just one shot off leaders McIlroy and Singh after a 32 on the front nine.
Singh sits tied with McIlroy after a couple of birdies in his seven completed holes, while Pettersson was alone in fourth on four under after a level-par round through eight holes.
England's Ian Poulter, Graeme McDowell of Northern Ireland and Sweden's Peter Hanson share seventh at two under, while Welshman Jamie Donaldson was one under and still has nine to play.
Justin Rose had a mixed third round as the Englishman surged up the leaderboard before a disappointing run on the back nine saw him sign for a two-under-par 70.
The 32-year-old carded five birdies in his opening 10 holes to shoot up from 47th on the leaderboard to seventh, but three bogeys in his last six holes meant he dropped down to tied 32nd.
David Lynn is the highest-placed Englishman in the clubhouse. The 38-year-old, whose only other appearance in a major was the 2003 Open, sank six birdies in a four-under 68 to lift him to one under par alongside Padraig Harrington.
The Irishman also had four birdies on a flawless front nine but he gave two shots back with a double-bogey six on the 10th.
However, the three-times major winner chipped in from a bunker for a birdie two on the short 17th and just had time to par the last to finish with a three-under 69 before the sirens ended play with 26 players out on the course.
Players will be grouped in threes and go off both the first and 10th tees in the fourth round.
