In 1980, Houston had a three-game lead over the Los Angeles Dodgers in the National League West, then lost their last three games of the regular season in Los Angeles, to force a one-game playoff. Niekro allowed six hits in a 7–1 Houston victory that propelled the Astros to their first postseason. He then pitched 10 shutout innings in Game 3 of the NLCS, with the Astros eventually winning 1–0 in the 11th inning, though they lost the series in five games to the Philadelphia Phillies.