'When I played here the first time I thought there was no way I could shoot 70 on this course,' said Quigley, who pocketed $210,000 for the win. 'This is one of the toughest courses on the tour.'
Final-round action resumed at 9:00 a.m. (ET) Monday morning after play was suspended Sunday night due to darkness. Sunday's round was delayed four hours thanks to heavy rain and lightning.
Jay Sigel came in second place and when play resumed Monday morning, he trailed Quigley by three shots. Sigel had a 45-foot birdie putt on 17 while Quigley had only 20 feet. Both players missed their birdie putts and when Quigley drained a seven-foot birdie at the last hole and Sigel bogeyed the same hole, the five-shot win was Quigley's.
'I've come from such a long way back to play with these guys,' said Quigley, now a five-time winner on the Senior Tour. 'The older you get, the sweeter they become. I can't put this one into perspective.'
Sigel carded a final-round 70 to end up at minus-11. In the end, Quigley's lead was too much, but Sigel had reason to be happy. He missed the first three months of the season with surgery on both of his shoulders.
'I'm delighted -- surprised actually -- in a way after being there those months when the weather was cold and I couldn't do much,' said Sigel.
Defending champion Tom Kite fired an 8-under 64 Sunday and moved into a tie for third with Ed Dougherty at 9-under par.
Hale Irwin tied with Bob Gilder for fifth after Gilder birdied the 18th hole on Monday, the only hole he came back to play.
Jimmy Powell, Jim Ahern and first-round co-leader Gary McCord were joined in a tie for seventh with Yoshitaka Yamamoto, who parred his final hole Monday.
Bobby Walzel bogeyed No. 18 Monday morning and finished tied with Walter Hall at minus-six.
Full-field scores from the SBC Senior Open