Radel, a right-handed pitcher and South Dakota native, is currently a freshman at Minnesota. Before joining the Gophers, Radel played high school baseball at Roosevelt High School in Sioux Falls, where he was a pitcher and infielder for the Raiders. Radel was named a 2018 Rawlings-Perfect Game Honorable Mention All-American and earned All-Region and All-State honors throughout his career. He was also ranked as the No. 1 overall pitcher in South Dakota by Perfect Game, while being ranked as the No. 4 overall pitching prospect in Iowa/South Dakota by Prep Baseball Report. Along with baseball, Radel played football and basketball at Roosevelt.