 Complete the following phrase:  The Houston Astros hired Virdon as their manager on August 20, 1975, succeeding Preston Gómez. Tal Smith, who had served as executive vice president for the Yankees, had become the Astros general manager on August 7. Virdon led the Astros to third-place finishes in 1976 and 1977, but the Astros slipped to fifth place in 1978. The 1979 Astros fell one game short of winning the NL West division championship. The Astros tied the Los Angeles Dodgers for the division championship in 1980, and defeated them in the 1980 NL West tie-breaker game. The Astros played the Philadelphia Phillies in the 