Sommerfeld is an Elm Grove, Wisconsin native and attended Brookfield Central High School. While at Brookfield Central, Sommerfeld was a 3 sport athlete playing four years of volleyball, four years of baseball, and a year of basketball. The captain of two years led his baseball team to 3 consecutive regional championships. While Sommerfield has only made 1 appearance with the Billikens, it was an efficient one. He threw a 1-2-3 inning back on February 22 versus North Florida. While at St. Louis, Sommerfeld plans on majoring in Sports Business.