HAGERSTOWN, MD., JULY 7 -- Webb Heintzelman of Montgomery Village made four birdies on Fountain Head's difficult back nine and shot four-under-par 67 yesterday for a 36-hole total of 136 and a four-shot lead over Fred Funk heading into the last round of the Maryland Open.

Funk, the University of Maryland's golf coach, shot 69 -- 140, followed at 142 by amateur Brian Grimes of Norbeck.

Grimes knocked a nine-iron into the hole for eagle 2 on the last hole and finished with 68.

Fred Gibson of East Potomac was next at 70 -- 143, followed at 144 by amateur and defending champion Marty West of Columbia Country Club (73 yesterday), Woody FitzHugh of Woody's Range (69), Glen Barrett of Glenn Dale (70) and amateur Frank Abbott of Lakewood (73).

Brad Schiefelbein, tied with Heintzelman after an opening round 69, triple-bogeyed the 14th hole and stands at 76 -- 145 with amateur Ricky Touma of Norbeck (73 -- 145). Heintzelman, named Middle Atlantic PGA player of the year after 13 victories last season, has nary a victory this season but is on the verge of claiming one of the area's most prestigious.

"A lot of good things come with winning this tournament, including a Kemper Open exemption," said Heinztelman, 25, who lives in Bethesda and is a teaching pro at Montgomery Village. "I'd love to have my name on that trophy."

Heintzelman, briefly tied with Funk after Funk shot the front nine in three-under-par 33, pulled away on the more difficult back nine with a three-under-par 32.

He made a ticklish 7-foot downhill birdie putt at the 12th hole and followed that with a 10-footer for birdie at the 13th. He drove behind trees on the 14th hole but hit a 7-iron shot that grazed the tree branches and finished 10 feet from the hole. He made that putt for his third straight birdie and sank a 20-footer for another birdie at the 17th hole.