Koivun Stuns Scheffler to Win 3M Open in Third Start Sport By lines July 27, 2026 Jackson Koivun turned the 3M Open into a statement. The 21-year-old rookie shed his amateur status just 24 days ago. On Sunday, Koivun outlasted world No. 1 Scottie Scheffler. The newcomer never blinked at TPC Twin Cities. A 21-Year-Old Rookie Outduels the World No. 1 Koivun closed with a bogey-free 66 at TPC Twin Cities in Blaine, Minnesota. He built a cushion that Scheffler could not erase. Koivun finished at 25-under 259, a tournament scoring record. That total delivered a three-stroke win for Koivun. The victory arrived in only his third professional start. Koivun became the fourth rookie to win on the PGA Tour in 2026. Scheffler pushed hard with a Sunday 63 at TPC Twin Cities. The world No. 1 finished at 22-under 262, three strokes back. That result marked Scheffler’s fifth runner-up finish of the 2026 season. Scheffler remains the top-ranked golfer in the world. The 3M Open crowd watched the favorite chase a rookie all afternoon. Koivun now owns a slice of PGA Tour history. His win in a third pro start makes Koivun the second-fastest to a Tour title. Koivun turned professional only 24 days before winning the 3M Open. The former Auburn All-American had already won an NCAA individual title. Koivun also captured two national team titles during his Auburn career. He swept college golf’s top individual honors before turning 21. The 3M Open payoff arrived in cash and playoff points. Koivun banked $1,584,000 for the win. His FedEx Cup standing rocketed from 194th to 70th overnight. That jump grabbed the last spot in the FedEx Cup playoffs. Koivun sealed it with only two qualifier events left on the schedule. The upset stung anyone holding a Scheffler ticket at TPC Twin Cities. Scheffler had opened as a heavy betting favorite for the 3M Open. Koivun sat far down the board at long odds. His 25-under 259 rewarded bettors who backed the 21-year-old rookie. Lines.com had flagged Scheffler as the runaway favorite days earlier. The final margin reached 3 strokes by Sunday evening. Koivun now heads to the FedEx Cup playoffs as golf’s hottest rookie. Scheffler leaves Minnesota still hunting his next 2026 victory. The world No. 1 has now finished second five times this season. Bettors will track whether Koivun can carry this 3M Open form into August. Scheffler will stay the market favorite at nearly every stop. Koivun, for now, holds the trophy and the momentum. Related Sports Coverage Scheffler the Runaway Favorite at 2026 3M Open Scheffler’s 78-Cut Streak Ends at Scottish Open 2026 Open Championship: Scheffler Chases Repeat Final-round scores and results were reported by ESPN, the PGA Tour, and the Associated Press.