England's Greg Owen is the clubhouse leader after shooting a course record seven-under-par 65 in the second round of the Shell Houston Open at Redstone Golf Club.
He is at 10-under 134 and finished, while 44 golfers did not finish as the second round was suspended due to darkness.
Stuart Appleby is 11-under with two holes remaining. Trevor Immelman is three strokes behind Appleby after shooting a 67. Mathias Gronberg and Jerry Smith completed their rounds and are at seven-under 135.
The suspension was due to an early morning thunderstorm that delayed the beginning of the second round for two and a half hours.
Appleby will restart with a 54-foot eagle putt on the 557-yard eighth hole.
"We definitely could not get to nine," Appleby said. "There is no point in pushing it. We will just have to come back."
Appleby, who was playing with KJ Choi and Ben Curtis, was a bit aggravated that his group was not able to play in under five hours.
"The group in front of us finished," Appleby said. "They were just a lot quicker than us. They pushed and knew they could get across the line and get their cards signed."
When Appleby and the 43 others stranded at sundown complete their second rounds, a cut line will be established and the third round will begin, with golfers going off two tees in threesomes.
Gronberg, who had an early tee time and was able to finish well before dark, also was thankful. He planned to watch a minor league hockey game with friends and relax before having to come out to the course.
He might have wanted to keep playing. He hit all 18 greens in the second round en route to a 69.
"I was talking with my playing partners about how rarely we do it," Gronberg said. "We are supposed to be professionals, but at least for me it's like maybe a year in between or two years since I did 18 greens."
Appleby began the day as the leader and did nothing to relinquish his title. He began on the back nine and shot a 33 to get to nine under, and then made birdies at the fourth and sixth holes to get to 11 under.
If Appleby plays his remaining two holes at one under par, he will shoot his second straight 66.
