For 1982, Neil Lomax was positioned as the quarterback for the future for the Cardinals, and Hart made mop-up appearances in four games that year, throwing one touchdown with 199 yards passing in 19-of-33 combined passing. Hart did not play when the Cardinals made it to the playoffs. 1983 was Hart's last season with the team. After Lomax was taken out in the midst of the season opener loss (whereupon Hart threw 11-of-20 for 141 yards), Hart would be the starter for three of the next four games. Hart's final start as a quarterback was on October 2 against the Kansas City Chiefs. He would throw 5-of-13 for 33 yards and three interceptions before being taken out for Rusty Lisch. Hart was signed by the Redskins to back up Joe Theismann for the 1984 season, playing little in that season before retiring in the off-season. However, Hart did make it into one footnote of history, as his appearance into the October 7th game was his 200th appearance in the quarterback position, making him the 10th quarterback to ever do so.