Season record would be Spud Chandler
In 1914 Dutch Leonard had a 0.96 ERA
The Houston Astros finished the 1981 season with a record of 61-49. (strike shortened season)
The Houston Astros finished the 1971 season with a record of 79-83
The Houston Astros finished the 1972 season with a record of 84-69.
The Houston Astros finished the 1974 season with a record of 81-81.
The Houston Astros finished the 1975 season with a record of 64-97.
The Houston Astros finished the 1976 season with a record of 80-82.
The Houston Astros finished the 1977 season with a record of 81-81.
The Houston Astros finished the 1978 season with a record of 74-88.
The Houston Astros finished the 1970 season with a record of 79-83.
The Houston Astros finished the 1979 season with a record of 89-73.