Kerr coached the Georgetown University freshman soccer team in 1970 and then coached the American Eagles men's soccer team in 1971. Kerr took the amateur Fairfax Spartans to the 1986 National Amateur Cup. In 1987, the Spartans became known as F.C. Washington and later the Washington Stars as it entered the American Soccer League. Kerr was hired as head coach of the Stars on 24 June 1987. He coached the Stars until the team folded following the 1990 American Professional Soccer League season. Kerr was head coach of the Richmond Kickers in 1993–94.