Mehre also served as the head coach of the Minneapolis Marines of the NFL in 1923, tallying a mark of 4–5–2.
[1] After Mehre graduated in 1922, he played in that year and in 1923 with the Minneapolis Marines, also serving as head coach in 1923.
Upon Woodruff's retirement, Mehre became head coach and compiled a 59–34–6 record over ten years.
After leaving Georgia, Mehre served as the head coach at the University of Mississippi from 1938 to 1945, compiling a 39–26–1 record there.
In 1986, Butts–Mehre Heritage Hall was dedicated on the University of Georgia campus in honor of Mehre and fellow Bulldogs coach Wally Butts.