Robertson coached the Coppin State women's basketball team for five seasons from 1987-92 and was named the 1990-91 MEAC Coach of the Year and MEAC Tournament Most Outstanding Coach. The 1990-91 Eagles were the first CSU women's basketball team to have a winning season and win the MEAC Tournament, but at the time the MEAC Championships were not invited to the NCAA Tournament. Robertson coached one Black College Sports All-American, six All-MEAC players, and four MEAC All-Rookie selections. Robertson later served as an assistant athletic director at Coppin.