[1] Duke attended Clifton Heights High School, averaging 15.2 points per game as a senior and earning All-Delaware County honors.
Between 1980 and 1985, he coached at St. John Neumann High School, helping the team win the Catholic League title in 1985.
[2] Duke served as the head coach at Lehigh University after McCaffery left to become an assistant at Notre Dame in 1988.
The following season, the Mountain Hawks finished 19-10 and lost to Holy Cross in the Patriot League Tournament.
[3] He became the coach of the Atlantic City Seagulls and helped the team win USBL Championship in 1997.