He also served as the coach of the Celtics from 1963 to 1969 and of the Royals from 1969 to 1973. Cousy won six NBA championships with the Boston Celtics and was named NBA Most Valuable Player in 1957. He was a 13 time NBA All-Star and two time NBA All-Star Game MVP. He was selected to the All-NBA First Team 10 times and led the league in assists eight times. His #14 was retired by the Celtics and he was inducted into the Basketball Hall of Fame and the College Basketball Hall of Fame. Cousy also served as the first president of the National Basketball Players Association.