4. Tony Dorsett (RB 1977-1987)
Before Emmitt Smith starred at running back for the Dallas Cowboys, a man named Tony Dorsett held this role. Dorsett was a game changing running back for 11 seasons in Dallas. Like Smith, he was consistent throughout the majority of his career. Dorsett surpassed 1,000 yards rushing in 8 of his 11 seasons with the Cowboys. Dallas made the playoffs in 8 of Dorsett’s first 9 seasons in the league.