Born in Hyattsville, Maryland in 1966, Danny is the son of fellow Washington Metropolitan Basketball Hall of Fame member, Bob Ferry. He attended DeMatha Catholic High School in Hyattsville, Maryland, where he played under fellow Washington Metropolitan Basketball Hall of Fame member, coach Morgan Wootten. Danny then had a prolific college career at Duke (1985-89, 3 Final Fours, first team All American in 1989). Ferry still holds Duke's all-time single game scoring record, scoring 58 points against Miami on December 10, 1988. He is among Duke's greatest players of all time, ranking 6th in career points, 8th in career rebounds, and 7th in career assists. He became the first player in Atlantic Coast Conference to collect more than 2,000 points, 1,000 rebounds and 500 assists in his career. He was named to the ACC 50th Anniversary men's basketball team honoring the fifty greatest players in ACC history.
In the 1989 draft, he was the second overall pick by the Los Angeles Clippers but eschewed the Clippers and accepted an offer to play for the Italian league's Il Messaggero (now Virtus Roma) instead. After his rights were traded to the Cleveland Cavaliers, he signed 10-year guaranteed contract and then finished his career with the San Antonio Spurs. Ferry then moved into a management career with multiple NBA teams.