After nine seasons in the majors, Forsch made it to the postseason for the first time in his career in 1982. He also earned his first career save on May 15 against the Atlanta Braves. He got the game one start in the 1982 National League Championship Series, and held the Atlanta Braves to three hits while striking out six. He also went 2-for-3 with an RBI and a run scored. He lost both of his World Series starts against the Milwaukee Brewers, however, the Cardinals still won the series in seven games.