FORT WORTH, Texas (AP) David Toms' lead at Colonial was slashed from seven strokes to one before play was suspended in the third round Saturday.
Toms was coming off a double-bogey 6 and still had four holes to play when threatening weather led to a delay for the second consecutive day.
PGA Tour officials were hopeful that the round could be completed before dark if the weather cleared. Ten players were still on the course when play was stopped at 4:19 p.m. local time.
The 44-year-old Toms is looking for his first PGA Tour victory in more than five years, and is coming off a playoff loss at The Players Championship.
Toms built his big lead at Hogan's Alley with bogey-free 62s in each of the first two rounds. He then opened Saturday with a birdie at the par-5 No. 1 hole before three bogeys in a five-hole stretch.
Later, after blasting out of a greenside bunker to 7 1/2 feet at No. 14, he three-putted. That put him 13 under, only a stroke better than playing partner Charlie Wi.
When play stopped, Toms was preparing for a 6-foot par putt at No. 15 after blasting from a greenside bunker.
Wi had an impressive up-and-down at No. 14, chipping to about 12 feet and saving par after hitting his approach through the green. He was on the back fringe of the 15th green when play stopped, 21 feet from the hole.
Steven Bowditch, who had three holes to play in his third round, was even for the day and four strokes off the lead.
Stuart Appelby and Paul Goydos had already finished rounds of 67 to get to 8 under. John Senden, with two holes left, and Mark Wilson, with three holes left, were also at 8 under.