Kyle Stanley grabbed the lead at the halfway mark of the Barracuda Championship on Friday.
Stanley moved onto 22 points at the PGA Tour event, which is played in the Modified Stableford format.
The American made six birdies, an eagle and three bogeys to score 14 points in the second round in Truckee, California.
Matthias Schwab (20 points), Robert Streb (20) and Branden Grace (20) are tied for second.
Last year's runner-up Troy Merritt and Maverick McNealy are on 19 points.