No. 5 on the list is Billy Cunningham, who excelled as a player and coach. Why he’s important: Won championships with the Sixers as a player (in 1966-67) and a coach (in 1982-83).

In 1984, a heated rivalry between Julius "Dr. J" Erving and Larry Bird escalated into a famous fight during a 76ers vs. Celtics game. Billy Cunningham, head coach of the Sixers, defended Erving’s ...

It was Billy Cunningham who stormed off the bus and tore the effigy down. Cunningham practically invented the term “double-double.” He averaged 24.8 points and 15.4 rebounds a game FOR HIS CAREER.