Stephan dominated in two sports at MTHS, tennis and cross country.
In tennis, Stephan was a two-time Mid-Illini champion, a three-time sectional champion, and a four-time state qualifier. He was first team all-conference all four years and was named to the all-state tennis team three times. His teams won Mid-Illini and sectional championships all four years of his high school career. As a senior, Stephan was the Peoria Journal Star Tennis Player of the Year.
As a cross country runner, Stephan was the Mid-Illini champion once and all-conference three times. Stephan was twice named to the all-state team, finishing as high as 2nd at the state meet his senior year. His cross country teams were also successful, winning Mid-Illini titles all four years he ran.
In addition to his athletic successes, Stephan found the time to be valedictorian for the class of 2010.