Record: 92-70, Finished 2nd in NL Central Division (2004 NL)
Managed by Jimy Williams and Phil Garner
Ballpark: Minute Maid Park
The 2004 season was highly anticipated with the off season signing of free agents Roger Clemens and Andy Pettitte. Pettite was hurt and not much a factor for the majority of the year. Clemens did not disappoint, posting 18 wins and a sub 3.00 ERA en route to winning his 7th Cy Young Award.
The team hovered around the .500 mark before acquiring Carlos Beltran a month before the trade deadline. While Beltran played well, the team did not improve as a whole. After the All-Star break, manager Jimy Williams was fired, and Phil Garner was brought in as the interim manager. The team responded, going 46-26 to end the year, and clinch the Wild Card on the final day of the year.
The Astros finally broke through in the playoffs, beating the Atlanta Braves for the first time in four tries in the NLDS, and extending the St. Louis Cardinals to seven games in the NLCS before finally loosing.
In terms of post-season success, 2004 had been the most successful Astros season.
 NLCS vs. St. Louis Cardinals