Pavin, the 1995 U.S. Open champion, hasn't won on the PGA Tour in more than eight years. He was in the half of the field that had to complete rounds Saturday morning before starting third-round play.
He had four birdies during a six-hole stretch to complete consecutive bogey-free rounds at 11-under 133, one ahead of rookies Vaught Taylor and Roland Thatcher at Montreux Golf and Country Club.
Joe Ogilvie, who shot a tournament-best 64 Friday, Scott McCarron, Hunter Mahan, Hidemichi Tanaka, Carl Petterson and Steve Allan were next at 8 under.
Pavin, with more than $10.8 million in earnings during a 21-year career, last won at the MasterCard Colonial in 1996. His best finish this year was a tie for 10th at the AT&T Pebble Beach. He's 86th on the money list.
Pavin played the final 13 holes of his second round Saturday morning and was to start his third round in the afternoon. But the forecast called for more of the thunderstorms that delayed play more than four hours Thursday and more than three hours Friday. At one point Friday, hail hit the green at the 636-yard, 17th hole.
Pavin chipped in from 46 feet off that green for his first birdie Saturday and followed with a 20-foot birdie putt on the 18th. He hit within 8 feet of the pin on the 171-yard second and to 2 feet on the 518-yard fourth then made a 29-foot putt for his seventh birdie of the round on the par-4 eighth.
Taylor, who has five top-25 finishes in his first year on the PGA Tour, birdied three holes down the stretch on Friday for his second straight bogey-free 67.
Thatcher, who led after the first round with a 66, had five birdies and a bogey in his second round.
Ogilvie, who played 27 holes Friday because of rain delays Thursday, started his second round at par. He holed out from 186 yards for an eagle-2 on the 477-yard 15th to go along with seven birdies and a bogey.
McCarron, who lives about 20 minutes from the course, had five birdies and a bogey Friday for a 67 to go with his opening 69.
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