Benzel shot 1-over on the par-72 Crosswater Golf Club course at Sunriver Resort, for a 5-under 210 total after three rounds. He managed to take the lead, heading into Sunday's final round, despite three bogeys Saturday.
John O'Leary, director of instruction at Pleasant Valley Golf Club in Chantilly, Va., shot a 2-under 70 for a 211 total. Chip Sullivan, of Troutville, Va., was also a shot back with a 4-under 68.
Sullivan eagled the par-5 No. 2 hole.
Mike Small, coach at the University of Illinois, shot a 3-over 75, and was at 212 for the tournament. Tied with him two strokes off the lead were Rick Leibovich, the head pro at Tehama Golf Club in Carmel, Calif., and Tim Thelen, the director of instruction at Traditions Golf Club at Texas A&M.
Leibovich and Thelen each shot 1-under 71s on Saturday.
The low 20 scores earn a berth in the PGA Championship at Southern Hills Country Club in Tulsa, Okla., Aug. 6-12.
editors note: - The GOLF CHANNEL will air nine hours of live tournament action, Thursday-Friday from 6:30 ' 8:30 p.m. ET and Saturday-Sunday from 6:30 ' 9 p.m. ET.