Wagner played a significant role in the Steelers' championship teams of the 1970s, recording interceptions in the team's first two Super Bowl victories. He was part of four Super Bowl-winning teams during his 10-season career with the franchise.
The Steelers drafted Wagner in the 11th round of the 1971 NFL Draft. He recorded 36 interceptions and earned two Pro Bowl nods during his career, which ended in 1981. No cause of death was provided.