He joined the Cowboys in 1977 after a successful college career at The University of Pittsburgh.
Tony played 12 NFL seasons, 11 with Dallas and 1 with Denver to close his career: 12,739 rushing yards and 77 TD's. Tony played in a couple of Super Bowls and I remember watching that 99 yard run on Monday Night Football in 1981.
Dorsett was inducted to the Football Hall of Fame in 1994.
P.S. You can listen to my show (Canto Talk).