Among his more memorable games in the NFL include becoming the first quarterback in Steeler history to complete over 80% of his passes (minimum 20 attempts) in a game vs. San Diego on November 25, 1984 (18 completions in 22 attempts, 253 yards, 4 touchdowns, 1 interception); won AFC Offensive Player of the Week for his opening day 1985 performance vs. Indianapolis (21 completions in 30 attempts for 287 yards, 5 touchdowns passing, 1 rushing) that included tying Hall of Famer
Terry Bradshaw's team record for single game touchdown passes; passed for a career-high 374 yards on 26 completions with three touchdowns vs. Cincinnati on September 30, 1985; was the starting quarterback when Pittsburgh became the first visiting team to beat the
Denver Broncos in the post season, leading the Steelers to a come from behind 24–17 victory in the 1984 AFC Divisional Game on December 30, 1984 (overcame two early fumbles to complete 17 of 28 passes for 228 yards and threw the game-tying touchdown pass to
Louis Lipps); earned the final victory of his career as a starting quarterback against Pittsburgh, completing 17 of 24 passes, throwing a touchdown and scoring 1 rushing to lead San Diego to a 20–14 win over Pittsburgh on December 11, 1988; set a Steeler post season record (since eclipsed by
Neil O'Donnell and
Tommy Maddox) for single-game passing-yards for his 336-yard performance vs. Miami in the 1984 AFC Championship Game (completed 20 of 36 passes; threw 3 touchdowns and 3 interceptions).