Yahoo Sports reports: American Jackson Koivun, the world's top-ranked amateur golfer, said Friday he will turn professional after competing in next week's US Open.Koivun has played in nine PGA Tour events as an amateur, including three top-six efforts in seven 2025 starts. js/jc
sports | sports | Yahoo Sports | June 12, 2026 4:55 PM
World amateur No.1 golfer Koivun to turn pro after US Open
American Jackson Koivun, the world's top-ranked amateur golfer, said Friday he will turn professional after competing in next week's US Open.Koivun has played in nine PGA Tour events as an amateur, including three top-six efforts in seven 2025 starts. js/jc
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