1998 Houston Astros season

The 1998 Houston Astros season was the 37th season for the Major League Baseball (MLB) franchise in Houston, Texas. On the strength of a club record 102 wins, they rocketed to a second consecutive trip to the postseason with an National League Central title. They did not win 100 games again until 2017, while the record for wins would be broken the following year. On September 14, the Astros clinched the division title when the Chicago Cubs lost. The next day, Craig Biggio became the first Astro to collect 200 hits in a season.

Offseason

 * December 22, 1997: Rob Butler signed as a free agent with the Houston Astros.

Regular season
First baseman Jeff Bagwell hit his first career grand slam while tying a career-high six runs batted in (RBI) against Cincinnati on September 9 in a 13–7 victory. It was his 218th career home run, making his streak the then-longest among active players without a grand slam.

Notable Transactions
July 31, 1998: Randy Johnson was traded by the Seattle Mariners to the Houston Astros for a player to be named later, Freddy Garcia, and Carlos Guillén. The Houston Astros sent John Halama (October 1, 1998) to the Seattle Mariners to complete the trade.

Regular season

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 * Legend:      = Win       = Loss       = Postponement Bold = Astros team member

Postseason Game log

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 * Legend:      = Win       = Loss       = Postponement Bold = Astros team member

Starters by position
''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters
''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Starting pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers
Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts

Houston Astros vs. San Diego Padres
The Astros season ended by defeat in four games to the San Diego Padres in the National League Division Series, including losing two starts against Kevin Brown – one of the league's highest-accomplished pitchers that year – both by a 2–1 score. As the Game 1 starter opposing Randy Johnson, Brown allowed no runs in eight innings and struck out 16 Astros, a career-high, and second to that point in MLB playoff history only to Bob Gibson's 17-strikeout performance in the 1968 World Series. Bagwell, Derek Bell, and Craig Biggio combined for six hits in 51 at bats in this series.

Awards and records

 * Larry Dierker, National League Manager of the Year

Farm system
LEAGUE CHAMPIONS: New Orleans; LEAGUE CO-CHAMPIONS: Auburn