October 10, 1980: Astros win 11-inning NLCS thriller to reach

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The Astros Daily - Houston Astros 1980 NLCS

October 11, 1980: Phillies stay alive in Game 4 with 10th-inning rally at Houston – Society for American Baseball Research

1980 Baseball History - This Great Game

1980 NLCS: Classic matchup between Astros and Phillies

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Astros walk off in 11, 10/10/1980

October 10, 1980: Astros win 11-inning NLCS thriller to reach brink of World Series – Society for American Baseball Research

TSN Archives: The Phillies and Astros' unforgettable 1980 NLCS (Oct. 25, 1980, issue)