Kohler, WI (My Sportsbook) - Matt Kuchar posted a three-under 69 on Friday to stay atop the leaderboard after his second round of the PGA Championship at Whistling Straits.

Kuchar, the first-round leader, finished 36 holes at eight-under 136 and is one stroke ahead of fellow American Nick Watney, who shot a four-under 68 on Friday.

The second round was suspended due to darkness with half of the field still needing to finish the round. They will return Saturday morning, weather permitting.

Friday was the second day in a row that the round was delayed because of fog. The golfers waited two hours and 40 minutes to start play. The start of the tournament was pushed back more than three hours Thursday morning, then eventually suspended due to darkness with 78 players left on the course.

Rain began to fall at Whistling Straits Friday afternoon, but play wasn't stopped until darkness.

The forecast calls for overnight rain with it possibly carrying into Saturday morning. The plan is for the players to return at 8:00 a.m. (et).

Tiger Woods, a four-time PGA Champion, followed his worst start as a professional last week at the WGC-Bridgestone Invitational with a one-under 71 on Thursday.

Woods' second round was a little different.

He made six pars in the second round before the horn blew, but Woods' swing was erratic at best. Woods sprayed his drives all over and missed a three-foot birdie putt at the sixth to magnify what was a tough start to his second round.

Rory McIlroy (68), former Masters champion Zach Johnson (70), Jason Dufner (66), Bryce Molder (67), Dustin Johnson (68), Simon Khan (70) and teenager Seung Yul Noh (71) share third place at five-under 139.

Phil Mickelson, the 2005 PGA Champion, shot a three-under 69 and is in at minus-two.

"I just want to be in a position where if I play like I know I can, I can make up some ground," said the reigning Masters winner. "And I feel like I'm within striking distance."

Despite the fact that half of the field still has to finish, it appears the man Mickelson and everyone else will trying to catch is Kuchar, who shares the PGA Tour lead in top-10 finishes this year with eight.

Kuchar took the first-round lead Friday morning when he returned to finish the round. After a quick turnaround, Kuchar collected his first second-round birdie from 12 feet at the par-five second.

At the par-four sixth, Kuchar hit a terrible drive into a hazard and had to take a penalty drop. He walked off with a bogey, but stayed in a tie for the lead at five-under par.

Kuchar took sole possession of the lead with a short birdie putt at the par- five 11th. One hole later, he ran home a seven-footer for birdie at the par- three 12th and made it three in a row thanks to a five-footer at 13.

Kuchar was three ahead and parred his last five holes for his spot atop the leaderboard.

"Not too much trouble to report in two rounds," said Kuchar. "Just putting well and staying out of trouble, so I find myself at eight-under par. I had a strong week last week and continued on with a good start to this week."

Kuchar has never won a major championship and is currently seventh on the United States Ryder Cup points list. Eight automatic spots will be finalized at the completion of the PGA Championship.

He burst on to the golf scene with a win at the 1997 U.S. Amateur and a great showing at the 1998 Masters as an amateur. With his big grin and big game, Kuchar earned two PGA Tour victories, but has not yet lived up to the enormous hype when he turned pro.

"The game makes you do crazy things. And whether it's expectations or not, it's the game of golf," said Kuchar. "I think that's the beauty of the sport of golf. There's no guaranteed contract. You have to perform. And it's a tough game.

"It's going by so fast. I still find myself feeling almost like a rookie. I still feel like I'm the kid from '97 winning the U.S. Amateur and playing in the Masters in '98. I still feel like I'm that same kid. It feels like that is just a blink of an eye ago."

Chad Campbell posted his second consecutive two-under 70 on Friday and is in the clubhouse at four-under 140. Martin Laird and Francesco Molinari joined Campbell in a tie for 10th, but have plenty of golf to play in round two.

NOTES: John Daly withdrew on Friday...Defending champion Y.E. Yang is one- under through six holes and is one-under for the tournament...U.S. Open champion Graeme McDowell is at plus-three and British Open champion Louis Oosthuizen is at two-over 146...Both players are outside the projected cut line of one-over par.