Jeremy Pena, hitless in his first seven at-bats, homered leading off the 18th inning as the Houston Astros eliminated the host Seattle Mariners in the American League Division Series with a 1-0 victory Saturday.

The Astros swept the best-of-five series 3-0, advancing to the ALCS for the sixth straight year and spoiling Seattle's first postseason appearance since 2001.

Houston will face either the New York Yankees or the Cleveland Guardians for a berth in the World Series.