Since joining the 50-and-over circuit in the previous year, Peter Senior found himself in good position to win his first Champions Tour event.
John Huston birdied No. 18 for a 68 and Senior shot a bogey-free 67 on Saturday and that left them tied for the lead at 12-under after the next round of the 3M Championship at TPC Twin Cities.
Jay Haas, the co-leader after the opening round, shot a 69 and was one shot back.
Mark Calcavecchia, who ended second in the event of the previous year, and Tom Lehman, Minnesota native, were two behind.
Play was late 1 hour, 56 minutes because of the rain and lightning.
Ahead of three shots, Huston hit his tee shot on No. 12 into a water hazard, leading to a bogey. Haas and Lehman birdied the hole to get in one shot. Haas birdied No. 13 to temporarily tie for the lead, but neglected a short putt on No. 18 while Huston birdied the final hole.
Scott Piercy rattled off eight consecutive birdies on the front nine then eagled the 616-yard 18th to break the course record at Montreux Golf and Country Club with an 11-under 61 Saturday for 13-under overall and a two-stroke lead over Josh Teater at the Reno-Tahoe Open.
The 32-year-old, looking for his first PGA Tour victory, parred the first hole and after that birdied the following eight to make the turn at 8-under 28. That tied together the longest birdie streak and lowest nine holes in connection to par placed on the PGA Tour this year.