McDevitt was born on February 1, 1993, and is a native of Apple Valley, Minnesota, where he attended the local Eastview High School.
[2][3] After graduating from high school, McDevitt attended the University of Minnesota, where he played for its baseball team for five seasons as a relief pitcher.
[5] Following his college career, McDevitt became a volunteer assistant for the Minnesota Golden Gophers baseball team.
[7] McDevitt is credited with helping the development of pitchers, one of whom being Max Meyer, who was selected 3rd overall in the 2020 MLB Draft.
[8] In 2023, McDevitt took a temporary leave of absence from coaching due to health issues caused by Lyme disease.