Rookie Jackson Koivun shot 5-under-par 66 to stave off hard-charging Scottie Scheffler and win on the PGA Tour for the first time at the 3M Open on Sunday at Blaine, Minn.
Koivun, 21, finished at 25-under 259 for a three-shot victory on Scheffler, who closed with a 63 at TPC Twin Cities.
Less than two months ago, Koivun was helping Auburn to its second NCAA championship in a three-year stretch. He demonstrated more poise while playing the final two rounds of his third tournament since turning pro without carding a bogey.
Denny McCarthy (66), Brian Harman (65), Chandler Phillips (67) and Japan’s Hideki Matsuyama (64) tied for third place at 20 under.
World No. 1 Scheffler birdied three consecutive holes to begin the back nine as part of his bogey-free round. He birdied Nos. 16 and 18, leaving him trailing by two strokes.
Koivun then birdied No. 16, extending the margin to three strokes with two holes to play.
Koivun, a three-time Player of the Year in the Southeastern Conference, surged into the lead across the final nine holes Saturday and then went right to work Sunday, with his approach shot on the first hole spinning back to within 2 feet of the cup for an easy birdie putt. A birdie on No. 4 pushed his lead to five strokes, with Scheffler among five golfers tied for second place at the time.
Jake Knapp shot an early 62 to rise quickly on the leaderboard and finish at 16 under, tying for 13th.
Defending champion Kurt Kitayama (68) finished tied for 24th at 13 under.
