Chris Riley fired a 63 to seize the clubhouse lead at the Wyndham Championship, but Ryan Moore was even with him through 17 holes when darkness halted the second round on Friday.

Riley made it to 11-under 129 with a cautious approach that saw him leaving his driver in the bag through most of his tour around Sedgefield Country Club.

"The rough's pretty thick, so I'm just trying to keep the ball in the fairway," Riley said. "I don't mind hitting a two-iron or a seven-iron or a three-wood... compared to guys hitting driver and missing fairways."

Moore was 11-under through 17 holes and Jeff Maggert was 10-under with one to play when the round was suspended with 28 players still to finish.

The second round was to resume on Saturday morning, with the halfway cut to be determined and third round to follow as organizers continued to catch up in the wake of Thursday's four-hour weather delay.

Spain's Sergio Garcia was in the clubhouse with a 64 highlighted by two eagles. He joined Bill Haas (69) and Chez Reavie (67) on 131.

Australian Mark Lieshman fired a 65 to join a group on 132 that also included Kevin Stadler, Boo Weekley, Johnson Wagner and Fred Couples.

Stadler fired a 63, Weekley posted a 67 and both Johnson and Couples shot 66.

Riley completed three holes of his opening round on Friday morning before playing the second - in which he birdied four of his last six holes.

His birdie-birdie finh included a chip-in at 18.

"I just step onto the tee and see what (club) feels the best," Riley said.

Moore - who shared the lead with Reavie and Brandt Snedeker when play was halted on Thursday night, teed off on 10 had three straight birdies from the fourth among his six birdies and one bogey before play was halted just after he parred his penultimate hole - the eighth.

Garcia fashioned both of his eagles in similar style, following his drives at five and 15 with five-irons.

"The course was there for the taking," Garcia said. "There's only one thing that you need to do to make the course harder, and it's not to grow the rough or make the fairways narrower or anything like that... The toughest courses we play are ones where the greens are firm and fast, and that's where things happen.

"If you have a course where the greens are not too big, and the weather needs to help, but you manage to get them firm and fast, that's it."

Haas played a whopping 26 holes on Friday, completing the last eight holes of a career-best 62 in the first round, then playing the second.

"Any time you can make a cut is good, and to be nine-under par after two rounds is even better," said Haas, who missed the cut in 12 of his last 22 tournaments.