Twenty-four days ago Jackson Koivun was still an amateur. On Sunday at TPC Twin Cities he closed with a bogey-free 66, finished at 25-under 259, a new tournament scoring record, and beat the best player alive by three shots to win the 3M Open in his third start as a professional. Somewhere in the gallery, all afternoon, he could hear the murmur that was meant to unsettle him. “All throughout the crowd I kept hearing, ‘Scottie’s coming, Scottie’s coming,’” Koivun said afterwards. “I just tried to tone that out and keep playing the golf I knew I could.”
Scottie Scheffler did come, eventually, the way he tends to. But by the time he arrived it was too late, and that alone tells you something about the week Koivun has just had.
A Record Built in Stages
The tournament had already produced one piece of history before Koivun ever led it. Michael Kim shot a 59 in the second round, the 15th sub-60 round in Tour history, and took a three-shot lead into the weekend. Koivun spent Thursday and Friday quietly playing himself into position with rounds of 64 and 68, the sort of scores that look ordinary next to a 59 and mean everything by Saturday afternoon. He turned Saturday into the loudest day of the week regardless, playing his final ten holes in nine under for a back-nine 28 and a round of 61 that tied the tournament’s 54-hole scoring record and set him three clear of the field at 20-under.
Historic finish for the 21-year-old pro!
— PGA TOUR (@PGATOUR) July 25, 2026
Jackson Koivun ends the day with his first 54-hole lead and the back-nine scoring record @3MOpen. pic.twitter.com/1oPQYxs7jY
Kim, who had led the tournament less than twenty-four hours earlier, lost his feel on the greens and signed for a 70. “I’m pleasantly surprised at how calm I was feeling heading to the first tee,” he said, “but a little disappointed that I’m five back.” That is the strange arithmetic of a week with two historic rounds in it. A 59 can leave you five behind and a 61 can still not be the story people remember by Sunday night.
The Kind of Pressure Nobody Teaches You
Koivun became just the seventh player under the age of 22 since 2000 to take a lead of three or more strokes into a final round, a group that has not exactly made a habit of closing the door.
Jackson Koivun became the seventh player under the age of 22 to lead by 3+ strokes entering the final round of a PGA TOUR event since 2000, and he seeks to become the fourth player of that group to convert his lead to a win. https://t.co/2wX4njTFwo pic.twitter.com/3xpiEHG9Ke
— PGA TOUR Communications (@PGATOURComms) July 26, 2026
Scheffler made sure Sunday would ask the question properly. He birdied his first hole, ran off three in a row at the turn, and by the back nine had the largest gallery on the property following every step, roaring when he holed a 55-footer for eagle at the 16th. He would eventually shoot 63 and reach 22-under, cutting Koivun’s lead to two with holes still to play. It was, by any reasonable measure, a brilliant final round. It was also not enough, because the 21-year-old ahead of him refused to give him an opening. Koivun stuck his approach to a foot at the first for an early birdie, reeled off 21 consecutive greens in regulation before finally missing one, made a bunker up-and-down at the par-five 12th to push back to four ahead, and answered Scheffler’s eagle roar with a birdie of his own at the 16th to settle the matter. He even found time for the shortest drive of the week at the 18th, a mis-hit that, for one hole at least, made him look like he belonged among the rest of us.
The Fastest Rise in Recent Memory
Koivun’s amateur career reads like a highlight reel with no dull stretches in it. He was the top-ranked amateur in the world, the first player ever to sweep all four major college awards in the same season, and a two-time winner of both the Haskins and the Ben Hogan, putting him alongside Phil Mickelson and Jon Rahm in company most college golfers only study from a distance. He helped Auburn beat UCLA for the national title in June, then walked away from his final year of eligibility to turn pro after the U.S. Open, a decision that also meant forfeiting the Open Championship start he had earned as the world’s leading amateur. His pro career opened with a missed cut at the John Deere Classic and a tie for tenth at the ISCO Championship, which is to say it opened like most careers do, with some stumbling before the run really starts.
None of that stumbling was visible by Sunday evening in Minnesota. Scheffler’s runner-up finish was his fifth of the season, part of an odd stretch for the world number one in which the putter has occasionally betrayed him at the majors while his position atop the FedExCup has never really wavered. For Koivun, the win was worth $1,584,000 and, more than that, an answer to the only question that mattered this week. “I just love this game,” he said afterwards. “I love golf, it’s everything I do. I have a tough time getting away from it. Like I said, it’s been love at first sight.” Twenty-four days into a professional career, the feeling appears to be mutual.