Mueller was a two-time All-American in men’s lacrosse, capturing third team honors as a senior and honorable mention accolades as a junior. He was selected to receive the team's Joe Phillip Memorial Award for the person who most contributed to the overall team effort in 1972. The three-year letter man (1970, 71, 72) was part of teams that earned a combined 34-4 (18-0 Ivy League) with three Ivy League titles, as well as capturing the first-ever NCAA lacrosse championship in 1971. Mueller served as team captain as a senior. He ended his career with 55 goals and 42 assists, posting at least 30 points in each campaign. He had a career-high 20 goals as a senior and notched a career-best 34 points on 17 goals and 17 assists as a junior for the national championship squad. Mueller also lettered three times on the basketball team as a reserve, averaging 4.5 points and 2.8 rebounds in 62 career games.Â
