As a freshman at Florida, Puk appeared in 19 games and made seven starts. He had a 5–2 win–loss record with a 3.35 earned run average (ERA), 44 strikeouts, and one save. In April 2015, Puk and a teammate were arrested and charged with third-degree criminal trespass after they climbed a crane inside a marked construction site on Florida’s campus. The charge was later reduced to a misdemeanor and he was briefly suspended. After the suspension, Puk returned to help lead the Gators to the 2015 College World Series.