Offseason

• December 3, 1990: Willie McGee
  Willie McGee
  Willie Dean McGee is a retired professional baseball player who won two batting titles and was named Major League Baseball's National League MVP. McGee primarily played center and right field, winning three Gold Glove Awards for defensive excellence. McGee spent the majority of his 18-year career...
  
   was signed as a free agent by the Giants.
• January 19, 1990: Gary Carter
  Gary Carter
  Gary Edmund Carter , nicknamed "Kid" and "Kid Carter", is an American former Major League Baseball catcher. During a 19-year baseball career, mostly with the Montreal Expos and the New York Mets, Carter established himself as one of the premier catchers in the National League, winning three Gold...
  
   was signed as a free agent by the Giants.

Regular season

• In a game against the San Diego Padres
  San Diego Padres
  The San Diego Padres are a Major League Baseball team based in San Diego, California. They play in the National League Western Division. Founded in 1969, the Padres have won the National League Pennant twice, in 1984 and 1998, losing in the World Series both times...
  
  , Gary Carter broke the National League record set by Al Lopez
  Al Lopez
  Alfonso Ramon "Al" Lopez was an American catcher and manager in Major League Baseball, and was inducted into the Baseball Hall of Fame in 1977....
  
   for most games caught by a catcher. It was Carter’s 1,862nd game as a catcher.

Opening Day starters

• Kevin Bass
  Kevin Bass
  Kevin Charles Bass is a former outfielder in Major League Baseball who played for the Milwaukee Brewers, Houston Astros, San Francisco Giants, New York Mets, and Baltimore Orioles....
  
  
• Brett Butler
• Gary Carter
  Gary Carter
  Gary Edmund Carter , nicknamed "Kid" and "Kid Carter", is an American former Major League Baseball catcher. During a 19-year baseball career, mostly with the Montreal Expos and the New York Mets, Carter established himself as one of the premier catchers in the National League, winning three Gold...
  
  
• Will Clark
  Will Clark
  William Nuschler Clark, Jr. is a former first baseman in Major League Baseball best known for his years with the San Francisco Giants from to .Will was known by the nickname of "Will the Thrill"...
  
  
• Kevin Mitchell
• Rick Reuschel
  Rick Reuschel
  Rickey Eugene Reuschel is a former professional baseball pitcher from the early 1970s into the early 1990s. His nickname was "Big Daddy" because of his portly physique...
  
  
• Robby Thompson
  Robby Thompson
  Robert Randall "Robby" Thompson is an American professional baseball coach and former college and professional player. He played his entire career in Major League Baseball as the second baseman for the San Francisco Giants from to . Thompson is the current bench coach for the Seattle Mariners...
  
  
• José Uribe
  Jose Uribe
  José Altagracia González Uribe was a Dominican Major League Baseball shortstop from until . Most of his ten-year career was spent with the San Francisco Giants...
  
  
• Matt Williams

Notable transactions

• April 5, 1990: Greg Booker
  Greg Booker
  Gregory Scott Booker is a former professional baseball pitcher. He pitched in all or part of eight seasons in Major League Baseball, from 1983 until 1990. He also served as a coach for the San Diego Padres from 1997 until 2003, the first four years as bullpen coach, then a season-plus as pitching...
  
   was signed as a free agent by the Giants.
• April 8, 1990: Rick Leach
  Rick Leach
  ----Rick Leach is a former professional tennis player and a coach from the United States. A doubles specialist, he won 5 Grand Slam men's doubles titles , and 4 Grand Slam mixed doubles titles . Leach reached the World No...
  
   was signed as a Free Agent with the San Francisco Giants.
• June 23, 1990: Ernie Camacho
  Ernie Camacho
  Ernest Carlos Camacho is a former professional baseball player who pitched in the Major Leagues from 1980–1981 and 1983-1990.In 1984, Camacho lead the Cleveland Indians in saves with 23.-External links:...
  
   was released by the Giants.
• June 24, 1990: Rick Rodriguez
  Rick Rodriguez (baseball)
  Ricardo "Rick" Rodriguez is a professional baseball coach and former professional baseball pitcher. He pitched in parts of four seasons in the major leagues between and...
  
   was signed as a free agent by the Giants.
• August 12, 1990: Atlee Hammaker
  Atlee Hammaker
  Charlton Atlee Hammaker is a former Major League Baseball left-handed pitcher who played the majority of his career for the San Francisco Giants from 1982 to 1990. He also played for the Kansas City Royals, San Diego Padres, and Chicago White Sox...
  
   was released by the Giants.

Draft picks

• June 4, 1990: Rikkert Faneyte was drafted by the San Francisco Giants in the 16th round of the 1990 amateur draft. Player signed March 19, 1991.

Major League debuts

• Batters:
  • Steve Decker (Sep 18)
  • Mark Leonard (Jul 21)
  • Rick Parker (May 4)
  • Andres Santana (Sep 16)
• Pitchers:
  • Mark Dewey (Aug 24)
  • Eric Gunderson (Apr 11)
  • Paul McClellan (Sep 2)
  • Rafael Novoa (Jul 31)

Roster

Starters by position

Other batters

Starting pitchers

Other pitchers

Relief pitchers

Award winners

• Steve Bedrosian
  Steve Bedrosian
  Stephen Wayne Bedrosian, is an American former baseball player. Nicknamed "Bedrock", he played from 1981 to 1995 with the Atlanta Braves, Philadelphia Phillies, San Francisco Giants and Minnesota Twins...
  
   P, Willie Mac Award
  Willie Mac Award
  The Willie Mac Award is named in honor of Willie McCovey. It has been presented annually since 1980. It is awarded to the player on the San Francisco Giants who best exemplifies the spirit and leadership consistently shown by McCovey throughout his long career, voted upon by the players and...
  
  
• Will Clark, National League Leader, Sacrifice Flies (13)

Farm system