American Collin Morikawa carded a trio of birdies in the last three holes to take the Barracuda Championship by three points.
Leaderboard
+47 Morikawa
+44 Merritt
+40 Chin
+40 Streb
Points system: +8 albatross, +5 eagle, +2 birdie, 0 par, -1 bogey, -3 bogey or worse
Day four report
American Collin Morikawa carded a trio of birdies in the last three holes to take the Barracuda Championship by three points.
Compatriot Troy Merritt had raced into the lead with a strong third round but faded on Sunday, mixing four birdies with a bogey.
The Barracuda Championship - at the Montreux Golf and Country Club - uses a Modified Stableford format, which allocates points based on the number of strokes taken at each hole.
Eight points are awarded for an albatross, five for an eagle, two for a birdie, zero for a par, minus one for a bogey and minus three for a double bogey or worse.
Morikawa, 22, followed Saturday's 13 with a 14 to take the title - his first on the PGA Tour - with 47, three better than Merritt and seven more than John Chin and Robert Streb who tied for third.
Scotland's Martin Laird finished in a four-way tie for seventh on 37 points, scoring five birdies in the fourth round.
Day three report
American Troy Merritt moved up eight places and grabbed a two-point lead after 54 holes at the Barracuda Championship.
Merritt hit two eagles - including a 53-foot putt on the 18th - and four birdies in a blemish-free third round for a score of 18 and an overall total of 37 points.
The Barracuda Championship - at the Montreux Golf and Country Club - uses a Modified Stableford format, which allocates points based on the number of strokes taken at each hole.
Eight points are awarded for an albatross, five for an eagle, two for a birdie, zero for a par, minus one for a bogey and minus three for a double bogey or worse.
Fellow American Robert Streb, the leader after the completion of the weather-delayed second round, sits in second place on 35 points.
The 32-year-old, who picked up 12 points in the second round, scored 10 points in the third round after finishing with a birdie and three straight pars.
Scotland's Martin Laird is in a four-way tie for 10th on 28 points after recovering from a double-bogey on the par-three seventh to make seven birdies and 10 pars.
Day two report
Tom Hoge topped the leaderboard as the weather again stopped play in the second round of the Barracuda Championship.
The 30-year-old mixed five birdies with two bogeys at the Montreux Golf and Country Club for an overall score of eight for his second round and a total of 21.
The tournament in Reno uses the Modified Stableford scoring system, which allocates points based on the number of strokes taken at each hole.
Fellow Americans Beau Hossler, John Chin and Collin Morikawa were tied for second on 20 points, one point behind Hoge.
Hossler recovered from two bogeys to make seven birdies - including three straight through holes 11 to 13 - adding 12 points to his first-round score of eight.
Chin moved up 13 places with a second-round score of 11, while Morikawa made four birdies and a bogey for a score of seven.
Scotland's Martin Laird was in a five-way tie for ninth on 17 points after cancelling out a bogey on the par-four fourth with an eagle and four birdies.
Several players had yet to start their second round when play was suspended in Nevada, with overnight leader David Lingmerth the best of those whose round was interrupted on 17 points through four holes.
Under the Modified Stableford scoring system, eight points are awarded for an albatross, five for an eagle, two for a birdie, zero for a par, minus one for a bogey and minus three for a double bogey or worse.
Day one report
David Lingmerth topped the leaderboard as the first round of the Barracuda Championship was suspended due to lightning. The Swede fired nine birdies at the Montreux Golf and Country Club, which gave him an overall score of 18 for the round.
The tournament in Reno, Nevada, uses the Modified Stableford scoring system, which allocates points based on the number of strokes taken at each hole. Eight points are awarded for an albatross, five for an eagle, two for a birdie, zero for a par, minus one for a bogey and minus three for a double bogey or worse.
Lingmerth sits five points ahead of South Africa's Tyrone Van Aswegen and Americans Robert Streb and Tom Hoge.
Van Aswegen and Hoge both had an eagle and four birdies, while Streb carded seven birdies and a bogey on the par-4 fourth hole. Rain, thunder and lightning stopped play before all players had completed the course, with the action due to resume on Friday morning.