The 1980 National League West tie-breaker game was a one-game extension to Major League Baseball's (MLB) 1980 regular season, played between the Houston Astros and the Los Angeles Dodgers to decide the winner of the National League's (NL) West Division. The game was played on October 6, 1980, at Dodger Stadium in Los Angeles, California. It was necessary after the Dodgers overcame a three-game deficit in the final three games of the season and both teams finished with identical win–loss records of 92–70. The Dodgers won a coin flip late in the season which, by rule at the time, awarded them home field for the game.