He hit safely in every postseason game — and had at least one home run in each of the three National League Championship Series (NLCS)—played by the Phillies from 1976 to 1978, though Philadelphia did not advance to the World Series in any of those years. One of the first Phillies to buy seats at games for impoverished children, Luzinski was honored with the Roberto Clemente Award in 1978. In 1980, he suffered a major slump with injuries in the regular season, batting just .228, with 19 home runs, and 56 RBIs in 106 games, but came back with two game-winning hits in the 1980 National League Championship Series: a two-out two-run home run in the bottom of the 6th inning in Game 1 (the only home run hit in the entire 1980 NLCS); and a pinch-hit RBI double to score Pete Rose in the top of the 10th inning of Game 4, as Philadelphia went on to beat the Houston Astros in five games. Those hits against Houston, the biggest hits of his career, were among the most significant in franchise history; that team went on to bring the Phillies their first world championship, beating the Kansas City Royals in the 1980 World Series, 4 games to 2. At one time, Luzinski held the consecutive-game-hitting streak record for a league championship series with 13.