F-18: Winner of the 2025 Mark H. McCormack Medal

The Auburn University junior will make his second consecutive U.S. Open start after receiving the 2025 McCormack Medal for being the leading male amateur in the World Amateur Golf Ranking at the conclusion of the 2025 U.S. Amateur. Koivun also was one of the standouts on the victorious 2025 USA Walker Cup Team at Cypress Point Club last September. Koivun qualified for the 2025 U.S. Open at Oakmont. In 2024, Koivun became the first freshman to win the Haskins Award, given annually to the top collegiate golfer, since Alabama's Justin Thomas more than a decade earlier. He swept all of the major college awards, including the Phil Mickelson Award for being the top freshman. As a freshman, he posted a 3-0 match-play record to help Auburn claim its first-ever NCAA title while finishing a stroke out of the top spot individually. In 2024-25, Koivun again was a first-team All-American and selected to represent the U.S. in the Palmer Cup. He also repeated as the Southeastern Conference's Player of the Year. The Chapel Hill, N.C., resident advanced to the quarterfinals of the 2023 U.S. Amateur, losing to eventual winner Nick Dunlap, 1 down. He also played in the 2024 and 2025 U.S. Amateurs. Koivun's 69.0 stroke average as a sophomore was a single-season program record. Koivun is a part of the inaugural Elite Amateur Program, part of the U.S. National Development Program launched by the USGA. This program serves to provide support as they navigate their college years and transition to the next level.