Lilly began his career as a defensive end in 1961, but midway through 1963, his third season, Cowboys coach Tom Landry moved him to defensive tackle. Lilly made the adjustment, becoming the main man in Dallas' vaunted "Doomsday Defense". As a tackle, Lilly was a first-team All-NFL choice every year from 1964 through 1969, then again in 1971. In 1970. This Signed Seat back is from the 1st remodel at Cowboys Stadium.