Offseason

• October 24, 1986: Matt Keough
  Matt Keough
  Matthew Lon Keough Drafted by the Oakland A's out of Corona del Mar High School in 1973. Keough is a former Major League Baseball pitcher who played from through for the Oakland Athletics , New York Yankees , St. Louis Cardinals , Chicago Cubs and Houston Astros...
  
   was released by the Astros.
• November 16, 1986: Rocky Childress
  Rocky Childress
  Rodney Osborne "Rocky" Childress is a former professional baseball pitcher. He played all or part of four seasons in Major League Baseball, from 1985 until 1988, for the Philadelphia Phillies and Houston Astros.-External links:...
  
   was purchased by the Astros from the Philadelphia Phillies
  Philadelphia Phillies
  The Philadelphia Phillies are a Major League Baseball team. They are the oldest continuous, one-name, one-city franchise in all of professional American sports, dating to 1883. The Phillies are a member of the Eastern Division of Major League Baseball's National League...
  
  .

Regular season

• May 1, 1987: Pitcher Nolan Ryan
  Nolan Ryan
  Lynn Nolan Ryan, Jr. , nicknamed "The Ryan Express", is a former Major League Baseball pitcher. He is currently principal owner, president and CEO of the Texas Rangers....
  
   hit a home run off of Atlanta Braves
  Atlanta Braves
  The Atlanta Braves are a professional baseball club based in Atlanta, Georgia. The Braves are a member of the Eastern Division of Major League Baseball's National League. The Braves have played in Turner Field since 1997....
  
   pitcher Charlie Puleo
  Charlie Puleo
  Charles Michael Puleo is a retired Major League Baseball pitcher who played from 1981 to 1989 with the New York Mets, Cincinnati Reds and Atlanta Braves....
  
  .
• August 31, 1987: Astros batter Billy Hatcher was batting against the Chicago Cubs
  Chicago Cubs
  The Chicago Cubs are a professional baseball team located in Chicago, Illinois. They are members of the Central Division of Major League Baseball's National League. They are one of two Major League clubs based in Chicago . The Cubs are also one of the two remaining charter members of the National...
  
   when he broke his bat and it flew down the third base line. Cubs third baseman Keith Moreland
  Keith Moreland
  Bobby Keith "Zonk" Moreland is a former outfielder, catcher and infield in Major League Baseball who played for the Philadelphia Phillies, Chicago Cubs, and San Diego Padres. In , the final year of his career, he played for the Detroit Tigers, then the Baltimore Orioles...
  
   saw cork, and Hatcher was suspended for 10 games. Later on, Hatcher claimed that he was using pitcher Dave Smith's bat, and not his own.
• September 9, 1987: Nolan Ryan
  Nolan Ryan
  Lynn Nolan Ryan, Jr. , nicknamed "The Ryan Express", is a former Major League Baseball pitcher. He is currently principal owner, president and CEO of the Texas Rangers....
  
   struck out Mike Aldrete
  Mike Aldrete
  Michael Peter Aldrete is a former first baseman/outfielder in Major League Baseball.Aldrete was a four-year letterman at Stanford University...
  
   for the 4500th strikeout in his career.

Notable transactions

• April 2, 1987: Jeff Calhoun was traded by the Houston Astros to the Philadelphia Phillies for Ronn Reynolds
  Ronn Reynolds
  Ronn Dwayne Reynolds was a Major League Baseball catcher, who played for the New York Mets, Philadelphia Phillies, Houston Astros and San Diego Padres. After playing college baseball at the University of Arkansas, Reynolds was drafted by the Oakland Athletics in the 5th round in 1979...
  
  .
• June 2, 1987: 1987 Major League Baseball Draft
  1987 Major League Baseball Draft
  -First round selections:The following are the first round picks in the 1987 Major League Baseball draft.-Supplemental First Round Selections:-External links:*...
  
  
  • Craig Biggio
    Craig Biggio
    Craig Alan Biggio is a former Major League Baseball second baseman, catcher, and outfielder. He played his entire 20-year baseball career with the Houston Astros . He ranks 21st all-time with 3,060 career hits, and is the ninth player in the 3000 hit club to get all his hits with the same team. He...
    
     was drafted by the Astros in the 1st round (22nd pick). Player signed June 8, 1987.
  • Darryl Kile
    Darryl Kile
    Darryl Andrew Kile was an American Major League Baseball right-handed pitcher. He pitched from 1991-2002 for three different teams in his career. In his first season for the Cardinals, he won 20 games in 2000 as the team reached the postseason for the first time in four years. They advanced to the...
    
     was drafted by the Astros in the 30th round. Player signed May 18, 1988.
• June 2, 1987: Eric Bullock
  Eric Bullock
  Eric Gerald Bullock is a former Major League Baseball outfielder. He played for the Houston Astros, Minnesota Twins, Philadelphia Phillies and Montreal Expos from 1985 to 1992.-External links:...
  
   was traded by the Astros to the Minnesota Twins
  Minnesota Twins
  The Minnesota Twins are a professional baseball team based in Minneapolis, Minnesota. They play in the Central Division of Major League Baseball's American League. The team is named after the Twin Cities area of Minneapolis and St. Paul. They played in Metropolitan Stadium from 1961 to 1981 and the...
  
   for Clay Christiansen
  Clay Christiansen
  Clay C. Christiansen is a retired Major League Baseball pitcher. He played during one season at the major league level for the New York Yankees. He was drafted by the Yankees in the 15th round of the 1980 amateur draft...
  
  .

Roster

Starters by position

Other batters

Starting pitchers

Other pitchers

Relief pitchers

Farm system