|William learned to play lacrosse while at St. Pauls, and unbelievably played four years of varsity lacrosse in which the total M.S.A. record of the team was 59 (wins) - 0 (losses) - 0 (ties). Needless to say, the team won the M.S.A. Championship four years in a row (1943 to 1946). He was a Second Team All-Maryland player every year he played. He also was All-Maryland in Football and Basketball (1946). William coached the St. Pauls J.V. Lacrosse team in 1947.
William attended the University of Virginia from 1947 to 1951, and was captain of the varsity lacrosse team from 1949 to 1950. He was a Second Team All-American for two years (1948 and 1949) and a First Team All-American for two years (1950-1951). William played on the 1951 South team which lost 12-11 to a strong North squad despite his five assists.
He continued to play after college with the Mt. Washington Wolfpack and coached Towson State and Baltimore University. He officiated for approximately three years, and also coached the South All-Star Team to a 12-9 victory in 1961.
He was inducted into the Maryland Sports Hall of Fame in 1988.