John Havlicek

Havlicek took over Ramsey's role in Boston in the 1960s and was so good off the bench that he regularly played starter's minutes, with his tireless running wearing down opponents. His steal against Philadelphia in the 1965 Eastern final is one of the most famous plays in NBA history. He later became a starter and eight-time champion, but he showed how a sixth man could be a team's best player some nights.