Gilder was in the clubhouse at 11-under par when Quigley stepped to the tee at No. 17. He held a two-shot lead, but missed his first fairway of the round at the hole and played conservatively, laying up short of the green. Quigley knocked his second shot 22 feet from the hole and two-putted for bogey, dropping his lead to one shot.
'I didn't want to hit it over the green and out of bounds,' said Quigley, referring to his strategy on the 17th. 'I was just going to make my five and move on.'
The closing hole at Oak Hills Country Club is a par-3 and Quigley started to think of a state-run, par-3 championship from his youth in Rhode Island. At that event, he needed a two-putt par to seal the title, but three-putted and lost.
'I said, 'Man, don't do it again,'' said Quigley, who appeared in his 200th consecutive tournament for which he was eligible. 'I was choking really bad up there.'
Quigley knocked his tee shot 12 feet from the hole and left himself with a one-footer for par. He tapped in for his second win of the 2002 campaign and his seventh win since he joined the elder circuit in 1997.
The 55-year-old now heads to Gaillardia Golf & Country Club in Oklahoma City this week for the Senior Tour Championship.
'I'm not going to have one iota of pressure on me in Oklahoma,' he said. 'This is absolutely the high point of the season for me. Next week is a reward for a good season.'
Gilder began Sunday's final round six shots behind Quigley, but made up ground with a 7-under 64. He collected six consecutive birdies, starting at the third hole, but only managed to go 2-under on the back nine.
'It's the kind of round you want to have on the last day,' he said. 'It just wasn't working the first couple of days. I think that if I didn't bogey 12, I'd have been in a bit better shape and I might have threatened him a little bit.
Quigley opened with a birdie at No. 1 Sunday and added another at the par-5 fifth hole. He dropped his first shot since the 13th hole Friday when he bogeyed No.9, but still held a one-shot lead over Gilder.
Quigley rebounded from the bogey at nine with a birdie at the par-5 10th. When Quigley birdied No. 15, he took a two-shot lead down the stretch until the bogey at 17. He held on for his second win of the year after a victory at the Siebel Classic in March.
Vicente Fernandez managed a 1-under 70 to finish alone in third place at 10-under-par 203. Tom Watson took fourth at minus-8, followed by Gil Morgan, who finished fifth at 7-under par.
John Jacobs, Bruce Summerhays and 2002 Senior PGA Champion Fuzzy Zoeller shared sixth at 6-under par. Jose Maria Canizares, Rodger Davis and U.S. Senior Open champion Don Pooley finished knotted at minus-5.
Final scores fronm the SBC Championship