GRAND BLANC, Mich., Aug. 1 (UPI) -- Chris DiMarco fired an 8-under-par 64 Friday and had a two-stroke lead when second-round play was suspended due to darkness at the Buick Open.
The 2001 runner-up, DiMarco collected nine birdies and a single bogey for a 36-hole total of 13-under 131. David Sutherland and Australia's Paul Gow shared second at 133.
Thunderstorms interrupted play for more than 4 1/2 hours and almost half the field was still on the course when darkness fell.
Neal Lancaster, Garrett Willis and Andrew Magee were four strokes back at 9-under 135 while defending champion Tiger Woods is part of an eight-way logjam for seventh. He completed 13 holes at 8-under and was tied with, among others, Kenny Perry and U.S. Open champion Jim Furyk.
British Open champion Ben Curtis was at 5-under through 15 holes.