Meet the 20-year-old becoming the best amateur golfer of this generation

Here, in ascending order, is DataGolf’s official ranking of the best amateur players since 2010.

Four, Patrick Cantlay; three, Jordan Spieth; two, Jon Rahm … and one, Jackson Koivun.

wait, what?

Yes, on Friday afternoon, the 20-year-old junior at Auburn University saw his career take a historic trajectory. The highlight was Koivun’s victory at the 2026 SEC Championship, his third SEC Championship in as many collegiate seasons, making him the first player in more than 50 years to accomplish the three-peat.

In doing so, Koivun also moved to first DataGolf’s The all-time amateur golfer rankings, which uses stroke-earning data to determine a collegiate player’s skills compared to their Division 1 competitors. The rankings, which have captured all amateur golf data since 2010, help quantify Koivun’s success at the collegiate level alongside some of the stars to emerge from the NCAA over the past two decades. Now, this sort has a new job: To quantify the quantity better Koivun has been that every one of those players.

According to DataGolf rankings, Koivun’s hitting earned a +3.25 index, ranking nearly a tenth of a stroke (.09) better than Jon Rahm’s decorated amateur career at Arizona State, and 0.14 shots better than Jordan Spieth at the University of Texas, who led the Texan to three major championships at the dawn of his pro career.

Of course, the evidence of Koivun’s prowess goes much further than that DG. In less than three years at Auburn, Koivun is the program’s all-time winningest player with 10 wins, and is also the NCAA record holder with 36 holes (25 under), beating a three-decade mark set by none other than Tiger Woods. He has also served as an anchor a Walker Cup winning team (with three points earned), recorded a top-5 finish in just nine PGA Tour starts and locked up his upcoming PGA Tour University Accelerated Program representative tour status. All this to say nothing of his SEC Championship three-peat, which was his first since 1967.

In fact, Koivu might be trending in a full-on historic streak as an amateur player if he had found more success in USGA events. At the time of this writing, the biggest gap between Koivu and some of the most decorated amateurs in golf history is his performance at the US Junior and US Amateur Championships. While the erstwhile legends (Woods, Nicklaus, Mickelson) each recorded victories in major amateur events (including, in Woods’ case, a record 18 consecutive matches), Koivu has yet to advance to the quarterfinals.

If he maintains his amateur status over the summer, Koivu should at least have one last shot at amateur glory. The US Open will return to Merion outside Philadelphia in mid-August – giving Koivun a chance to record victory at one of the USGA’s most historic venues before the PGA Tour’s fall season offers no shortage of opportunities to play if Koivun then turns pro.

Either way, the resume is already stacked for the next great young player to enter the PGA Tour from the amateur ranks. Whether you’re counting by stats or hardware, it’s clear that the list of the most decorated amateurs of the modern era has added a new name: Birch tree.