After college, he coached high school basketball teams at
Beloit, Wisconsin and
Stevens Point, Wisconsin that advanced to the state competition. Erickson was
drafted in 1953, serving for two years in the
United States Army. He began coaching college basketball at
Lake Forest College, compiling 34 wins and 38 losses for three seasons between 1955 and 1958. He served as an assistant coach for the
University of Wisconsin–Madison for the 1958–59 season. The following year, he succeeded
Bud Foster as head coach, and compiled a 100–114 record in nine seasons. His 1961 and 1962 teams finished second in the
Big Ten Conference, the only times they would finish higher than fourth in Big Ten play from 1950 to 1998. His 1962 team upset an
Ohio State team that was ranked number one at the time and led by
Jerry Lucas and
John Havlicek. He remained at Wisconsin until he was hired as the general manager of the Milwaukee Bucks expansion team on April 3, 1968. After Erickson resigned as the general manager, he won the Republican Party primary, but lost in his 1970 run for the United States Senate against incumbent
William Proxmire. After the loss, Erickson became president of the Fellowship of Christian Athletes, a position that he held for 15 years. The
Big Eight Conference hired Erickson to be its director of basketball in 1988, a position that he held until he was promoted to be the assistant commissioner. ==Awards==