| Monday, January 1 |
| Former Giant Carmen Hill dies in Indianapolis, IN at the age of 95. |
| Wednesday, April 11 |
| » Defeated Braves (0-1), 8-0 | Atlanta-Fulton County Stadium (1-0) | 1-0 | |
| » W: Rick Reuschel (1-0) L: Tom Glavine (0-1) | Third | 1½ out |
| » Lost to Braves (1-1), 4-3 | Atlanta-Fulton County Stadium (1-1) | 1-1 | |
| » W: Pete Smith (1-0) L: Russ Swan (0-1) S: Mike Stanton (1) | Third | 1½ out |
| » Major-league debuts: Eric Gunderson (Giants) |
| Thursday, April 12 |
| » Defeated Braves (1-2), 13-4 | Atlanta-Fulton County Stadium (2-1) | 2-1 | |
| » W: Mike LaCoss (1-0) L: John Smoltz (0-1) S: Jeff Brantley (1) | Second | 1 out |
| Friday, April 13 |
| » Lost to Padres (3-2), 8-3 | Candlestick Park (0-1) | 2-2 | |
| » W: Greg Harris (1-0) L: Dan Quisenberry (0-1) | Third | 2 out |
| Saturday, April 14 |
| » Lost to Padres (4-2), 5-3 | Candlestick Park (0-2) | 2-3 | Lost 2 |
| » W: Craig Lefferts (1-0) L: Jeff Brantley (0-1) | Fourth | 2½ out |
| Sunday, April 15 |
| » Lost to Padres (5-2), 4-3 | Candlestick Park (0-3) | 2-4 | Lost 3 |
| » W: Greg Harris (2-0) L: Steve Bedrosian (0-1) | Fourth | 3½ out |
| Monday, April 16 |
| » Defeated Dodgers (4-4), 3-1 | Dodger Stadium (1-0) | 3-4 | |
| » W: Mike LaCoss (2-0) L: Fernando Valenzuela (0-2) | Fourth | 3½ out |
| Tuesday, April 17 |
| » Lost to Dodgers (5-4), 10-5 | Candlestick Park (0-4) | 3-5 | |
| » W: Don Aase (1-1) L: Atlee Hammaker (0-1) | Fourth | 4½ out |
| Wednesday, April 18 |
| » Lost to Dodgers (6-4), 6-2 | Candlestick Park (0-5) | 3-6 | Lost 2 |
| » W: Mike Morgan (2-0) L: Eric Gunderson (0-1) S: Tim Crews (1) | Fifth | 5½ out |
| Friday, April 20 |
| » Lost to Padres (6-4), 9-2 | San Diego/Jack Murphy Stadium (0-1) | 3-7 | Lost 3 |
| » W: Ed Whitson (1-0) L: Rick Reuschel (1-1) | Fifth | 6 out |
| Saturday, April 21 |
| » Defeated Padres (6-5), 6-4 | San Diego/Jack Murphy Stadium (1-1) | 4-7 | |
| » W: Mike LaCoss (3-0) L: Bruce Hurst (0-2) S: Steve Bedrosian (1) | Fifth | 6 out |
| Sunday, April 22 |
| » Defeated Padres (6-6), 3-1 | San Diego/Jack Murphy Stadium (2-1) | 5-7 | Won 2 |
| » W: Atlee Hammaker (1-1) L: Eric Show (0-2) S: Steve Bedrosian (2) | Fourth | 5 out |
| Monday, April 23 |
| » Lost to Padres (7-6), 13-3 | San Diego/Jack Murphy Stadium (2-2) | 5-8 | |
| » W: Andy Benes (2-1) L: Eric Gunderson (0-2) S: Calvin Schiraldi (1) | Fifth | 5½ out |
| Tuesday, April 24 |
| » Lost to Pirates (9-6), 4-1 | Candlestick Park (0-6) | 5-9 | Lost 2 |
| » W: Doug Drabek (3-1) L: Scott Garrelts (0-1) S: Bill Landrum (2) | Fifth | 5½ out |
| Wednesday, April 25 |
| » Lost to Pirates (10-6), 7-4 | Candlestick Park (0-7) | 5-10 | Lost 3 |
| » W: Bob Patterson (2-0) L: Steve Bedrosian (0-2) | Fifth | 6½ out |
| Thursday, April 26 |
| » Lost to Pirates (11-6), 2-1 | Candlestick Park (0-8) | 5-11 | Lost 4 |
| » W: John Smiley (2-2) L: Mike LaCoss (3-1) | Fifth | 7 out |
| Friday, April 27 |
| » Defeated Cardinals (8-10), 12-3 | Candlestick Park (1-8) | 6-11 | |
| » W: Atlee Hammaker (2-1) L: Greg Mathews (0-3) | Fifth | 7 out |
| Saturday, April 28 |
| » Lost to Cardinals (9-10), 5-0 | Candlestick Park (1-9) | 6-12 | |
| » W: John Tudor (4-0) L: Scott Garrelts (0-2) | Fifth | 8 out |
| Sunday, April 29 |
| » Defeated Cardinals (9-11), 9-7 | Candlestick Park (2-9) | 7-12 | |
| » W: Rick Reuschel (2-1) L: Joe Magrane (0-4) S: Steve Bedrosian (3) | Fifth | 7 out |
| Former Giant Ray Poat dies in Oak Lawn, IL at the age of 73. |
| Monday, April 30 |
| » Defeated Dodgers (11-10), 8-4 | Dodger Stadium (2-0) | 8-12 | Won 2 |
| » W: John Burkett (1-0) L: John Wetteland (1-2) | Fourth | 7 out |
| Tuesday, May 1 |
| » Lost to Cubs (9-11), 7-4 | Candlestick Park (2-10) | 8-13 | |
| » W: Mike Bielecki (1-2) L: Bob Knepper (0-1) S: Mitch Williams (6) | Fourth | 7 out |
| Wednesday, May 2 |
| » Lost to Cubs (10-11), 9-6 | Candlestick Park (2-11) | 8-14 | Lost 2 |
| » W: Mike Harkey (3-1) L: Scott Garrelts (0-3) S: Paul Assenmacher (1) | Fifth | 7 out |
| Friday, May 4 |
| » Lost to Expos (12-11), 5-4 | Stade Olympique (0-1) | 8-15 | Lost 3 |
| » W: Kevin Gross (3-1) L: Rick Reuschel (2-2) S: Tim Burke (7) | Sixth | 8½ out |
| » Major-league debuts: Rick Parker (Giants) |
| Saturday, May 5 |
| » Defeated Expos (12-12), 4-1 | Stade Olympique (1-1) | 9-15 | |
| » W: John Burkett (2-0) L: Dennis Martinez (2-2) S: Jeff Brantley (2) | Fourth | 8½ out |
| Sunday, May 6 |
| » Lost to Expos (13-12), 7-0 | Stade Olympique (1-2) | 9-16 | |
| » W: Mark Gardner (1-2) L: Atlee Hammaker (2-2) | Fifth | 9½ out |
| Monday, May 7 |
| » Lost to Expos (14-12), 7-6 | Stade Olympique (1-3) | 9-17 | Lost 2 |
| » W: Steve Frey (2-0) L: Steve Bedrosian (0-3) | Sixth | 10½ out |
| Tuesday, May 8 |
| » Lost to Mets (14-13), 4-1 | Shea Stadium (0-1) | 9-18 | Lost 3 |
| » W: Sid Fernandez (2-3) L: Rick Reuschel (2-3) S: John Franco (7) | Sixth | 11 out |
| Wednesday, May 9 |
| » Defeated Mets (14-14), 4-2 | Shea Stadium (1-1) | 10-18 | |
| » W: Bob Knepper (1-1) L: Bob Ojeda (0-1) S: Steve Bedrosian (4) | Fifth | 10 out |
| Friday, May 11 |
| » Lost to Phillies (16-12), 10-6 | Veteran's Stadium (0-1) | 10-19 | |
| » W: Ken Howell (3-3) L: John Burkett (2-1) | Fifth | 11½ out |
| Saturday, May 12 |
| » Defeated Phillies (16-13), 6-2 | Veteran's Stadium (1-1) | 11-19 | |
| » W: Scott Garrelts (1-3) L: Bruce Ruffin (2-3) S: Jeff Brantley (3) | Fifth | 10½ out |
| Sunday, May 13 |
| » Lost to Phillies (17-13), 4-1 | Veteran's Stadium (1-2) | 11-20 | |
| » W: Dennis Cook (5-0) L: Rick Reuschel (2-4) | Fifth | 11½ out |
| Monday, May 14 |
| » Defeated Mets (16-15), 4-2 | Candlestick Park (3-11) | 12-20 | |
| » W: Bob Knepper (2-1) L: Sid Fernandez (2-4) S: Steve Bedrosian (5) | Fifth | 11½ out |
| Tuesday, May 15 |
| » Defeated Mets (16-16), 6-5 | Candlestick Park (4-11) | 13-20 | Won 2 |
| » W: Mark Thurmond (1-0) L: Bob Ojeda (0-2) S: Steve Bedrosian (6) | Third | 11½ out |
| Wednesday, May 16 |
| » Defeated Mets (16-17), 4-3 | Candlestick Park (5-11) | 14-20 | Won 3 |
| » W: Jeff Brantley (1-1) L: Alejandro Pena (1-1) | Fourth | 11 out |
| Friday, May 18 |
| » Defeated Expos (18-18), 7-2 | Candlestick Park (6-11) | 15-20 | Won 4 |
| » W: Atlee Hammaker (3-2) L: Steve Frey (2-1) | Fourth | 10½ out |
| Saturday, May 19 |
| » Lost to Expos (19-18), 7-4 | Candlestick Park (6-12) | 15-21 | |
| » W: Kevin Gross (5-2) L: Bob Knepper (2-2) S: Tim Burke (9) | Fourth | 11½ out |
| Sunday, May 20 |
| » Lost to Expos (20-18), 6-5 | Candlestick Park (6-13) | 15-22 | Lost 2 |
| » W: Bill Sampen (2-0) L: Atlee Hammaker (3-3) S: Tim Burke (10) | Fourth | 11½ out |
| Monday, May 21 |
| » Lost to Phillies (21-16), 5-2 | Candlestick Park (6-14) | 15-23 | Lost 3 |
| » W: Terry Mulholland (3-1) L: Scott Garrelts (1-4) S: Roger McDowell (10) | Fifth | 12½ out |
| Tuesday, May 22 |
| » Lost to Phillies (22-16), 4-2 | Candlestick Park (6-15) | 15-24 | Lost 4 |
| » W: Ken Howell (5-3) L: Rick Reuschel (2-5) S: Roger McDowell (11) | Fifth | 12½ out |
| Wednesday, May 23 |
| » Defeated Cardinals (18-22), 6-1 | Busch Stadium II (1-0) | 16-24 | |
| » W: Bob Knepper (3-2) L: Greg Mathews (0-4) | Fifth | 12 out |
| Thursday, May 24 |
| » Lost to Cardinals (19-22), 3-2 | Busch Stadium II (1-1) | 16-25 | |
| » W: Frank DiPino (1-0) L: Ed Vosberg (0-1) | Fifth | 13 out |
| Friday, May 25 |
| » Defeated Pirates (24-17), 9-8 | Three Rivers Stadium (1-0) | 17-25 | |
| » W: John Burkett (3-1) L: Walt Terrell (1-4) S: Jeff Brantley (4) | Fourth | 13 out |
| Saturday, May 26 |
| » Lost to Pirates (25-17), 10-4 | Three Rivers Stadium (1-1) | 17-26 | |
| » W: Doug Drabek (7-1) L: Scott Garrelts (1-5) | Sixth | 14 out |
| Sunday, May 27 |
| » Lost to Pirates (26-17), 5-2 | Three Rivers Stadium (1-2) | 17-27 | Lost 2 |
| » W: Neal Heaton (8-1) L: Rick Reuschel (2-6) S: Ted Power (4) | Sixth | 14 out |
| Monday, May 28 |
| » Lost to Cubs (21-24), 5-1 | Wrigley Field (0-1) | 17-28 | Lost 3 |
| » W: Mike Harkey (5-1) L: Bob Knepper (3-3) S: Les Lancaster (1) | Sixth | 14½ out |
| Tuesday, May 29 |
| » Defeated Cubs (21-25), 6-2 | Wrigley Field (1-1) | 18-28 | |
| » W: Don Robinson (1-0) L: Kevin Blankenship (0-1) S: Jeff Brantley (5) | Sixth | 14½ out |
| Wednesday, May 30 |
| » Defeated Cubs (21-26), 4-1 | Wrigley Field (2-1) | 19-28 | Won 2 |
| » W: John Burkett (4-1) L: Shawn Boskie (1-2) S: Steve Bedrosian (7) | Fifth | 14 out |
| Thursday, May 31 |
| » Lost to Astros (20-27), 5-3 | Candlestick Park (6-16) | 19-29 | |
| » W: Jim Deshaies (3-2) L: Scott Garrelts (1-6) S: Danny Darwin (1) | Fifth | 14 out |
| Friday, June 1 |
| » Defeated Astros (20-28), 6-5 | Candlestick Park (7-16) | 20-29 | |
| » W: Steve Bedrosian (1-3) L: Jim Clancy (1-4) | Fifth | 14 out |
| Saturday, June 2 |
| » Defeated Astros (20-29), 5-4 | Candlestick Park (8-16) | 21-29 | Won 2 |
| » W: Steve Bedrosian (2-3) L: Danny Darwin (1-1) | Fourth | 14 out |
| Sunday, June 3 |
| » Defeated Astros (20-30), 7-3 | Candlestick Park (9-16) | 22-29 | Won 3 |
| » W: Atlee Hammaker (4-3) L: Mike Scott (2-6) S: Jeff Brantley (6) | Fourth | 14 out |
| Monday, June 4 |
| » Defeated Reds (33-13), 10-1 | Candlestick Park (10-16) | 23-29 | Won 4 |
| » W: John Burkett (5-1) L: Ron Robinson (2-2) | Fourth | 13 out |
| Tuesday, June 5 |
| » Defeated Reds (33-14), 6-1 | Candlestick Park (11-16) | 24-29 | Won 5 |
| » W: Scott Garrelts (2-6) L: Jack Armstrong (8-2) S: Jeff Brantley (7) | Fourth | 12 out |
| Wednesday, June 6 |
| » Defeated Reds (33-15), 3-2 | Candlestick Park (12-16) | 25-29 | Won 6 |
| » W: Jeff Brantley (2-1) L: Rob Dibble (3-1) | Fourth | 11 out |
| Friday, June 8 |
| » Defeated Braves (20-31), 23-8 | Atlanta-Fulton County Stadium (3-1) | 26-29 | Won 7 |
| » W: Trevor Wilson (1-0) L: Derek Lilliquist (2-8) S: Mark Thurmond (1) | Fourth | 10½ out |
| Saturday, June 9 |
| » Lost to Braves (21-31), 5-3 | Atlanta-Fulton County Stadium (3-2) | 26-30 | |
| » W: Charlie Leibrandt (1-0) L: Atlee Hammaker (4-4) | Fourth | 10½ out |
| Sunday, June 10 |
| » Defeated Braves (21-32), 9-3 | Atlanta-Fulton County Stadium (4-2) | 27-30 | |
| » W: John Burkett (6-1) L: Pete Smith (5-5) | Fourth | 9½ out |
| Monday, June 11 |
| » Defeated Braves (21-33), 8-3 | Atlanta-Fulton County Stadium (5-2) | 28-30 | Won 2 |
| » W: Scott Garrelts (3-6) L: John Smoltz (3-5) | Third | 9 out |
| Tuesday, June 12 |
| » Defeated Padres (30-26), 7-2 | San Diego/Jack Murphy Stadium (3-2) | 29-30 | Won 3 |
| » W: Don Robinson (2-0) L: Dennis Rasmussen (6-3) S: Mark Thurmond (2) | Third | 7½ out |
| Wednesday, June 13 |
| » Defeated Padres (30-27), 6-0 | San Diego/Jack Murphy Stadium (4-2) | 30-30 | Won 4 |
| » W: Trevor Wilson (2-0) L: Ed Whitson (5-4) | Third | 7½ out |
| Thursday, June 14 |
| » Defeated Padres (30-28), 6-2 | San Diego/Jack Murphy Stadium (5-2) | 31-30 | Won 5 |
| » W: Ed Vosberg (1-1) L: Bruce Hurst (3-6) | Third | 7½ out |
| Friday, June 15 |
| » Defeated Braves (23-36), 8-2 | Candlestick Park (13-16) | 32-30 | Won 6 |
| » W: John Burkett (7-1) L: Pete Smith (5-6) | Third | 7½ out |
| Saturday, June 16 |
| » Defeated Braves (23-37), 7-0 | Candlestick Park (14-16) | 33-30 | Won 7 |
| » W: Scott Garrelts (4-6) L: John Smoltz (3-6) | Second | 7½ out |
| Sunday, June 17 |
| » Defeated Braves (23-38), 9-7 | Candlestick Park (15-16) | 34-30 | Won 8 |
| » W: Steve Bedrosian (3-3) L: Tony Castillo (2-1) | Second | 7½ out |
| Monday, June 18 |
| » Defeated Padres (31-31), 2-1 | Candlestick Park (16-16) | 35-30 | Won 9 |
| » W: Trevor Wilson (3-0) L: Ed Whitson (5-5) S: Jeff Brantley (8) | Second | 7 out |
| Tuesday, June 19 |
| » Lost to Padres (32-31), 4-3 | Candlestick Park (16-17) | 35-31 | |
| » W: Bruce Hurst (4-6) L: Francisco Oliveras (0-1) S: Craig Lefferts (10) | Second | 7½ out |
| Wednesday, June 20 |
| » Lost to Padres (33-31), 4-3 | Candlestick Park (16-18) | 35-32 | Lost 2 |
| » W: Craig Lefferts (5-1) L: Steve Bedrosian (3-4) S: Greg Harris (4) | Second | 8½ out |
| Friday, June 22 |
| » Defeated Astros (26-41), 4-3 | Astrodome (1-0) | 36-32 | |
| » W: Scott Garrelts (5-6) L: Jim Deshaies (3-5) S: Jeff Brantley (9) | Second | 7 out |
| Saturday, June 23 |
| » Lost to Astros (27-41), 4-2 | Astrodome (1-1) | 36-33 | |
| » W: Mark Portugal (2-7) L: Steve Bedrosian (3-5) S: Dave Smith (14) | Third | 8 out |
| Sunday, June 24 |
| » Lost to Astros (28-41), 8-2 | Astrodome (1-2) | 36-34 | Lost 2 |
| » W: Bill Gullickson (5-5) L: Don Robinson (2-1) | Third | 9 out |
| Monday, June 25 |
| » Lost to Reds (44-23), 5-2 | Riverfront Stadium (0-1) | 36-35 | Lost 3 |
| » W: Jack Armstrong (10-3) L: John Burkett (7-2) S: Randy Myers (14) | Second | 10 out |
| Tuesday, June 26 |
| » Lost to Reds (45-23), 3-2 | Riverfront Stadium (0-2) | 36-36 | Lost 4 |
| » W: Randy Myers (3-2) L: Mark Thurmond (1-1) | Third | 11 out |
| Wednesday, June 27 |
| » Defeated Reds (45-24), 8-3 | Riverfront Stadium (1-2) | 37-36 | |
| » W: Don Robinson (3-1) L: Tom Browning (7-5) | Second | 10 out |
| Friday, June 29 |
| » Defeated Pirates (42-30), 7-3 | Candlestick Park (17-18) | 38-36 | Won 2 |
| » W: Trevor Wilson (4-0) L: Neal Heaton (10-3) S: Jeff Brantley (10) | Second | 8½ out |
| Saturday, June 30 |
| » Lost to Pirates (43-30), 4-3 | Candlestick Park (17-19) | 38-37 | |
| » W: Bob Kipper (3-1) L: Mark Thurmond (1-2) S: Stan Belinda (3) | Second | 9½ out |
| Sunday, July 1 |
| » Lost to Pirates (44-30), 8-5 | Candlestick Park (17-20) | 38-38 | Lost 2 |
| » W: Jay Tibbs (3-7) L: Francisco Oliveras (0-2) S: Bill Landrum (12) | Second | 9½ out |
| Monday, July 2 |
| » Defeated Cardinals (32-45), 3-2 | Candlestick Park (18-20) | 39-38 | |
| » W: Don Robinson (4-1) L: Joe Magrane (4-11) S: Jeff Brantley (11) | Second | 9 out |
| Tuesday, July 3 |
| » Defeated Cardinals (32-46), 4-0 | Candlestick Park (19-20) | 40-38 | Won 2 |
| » W: Trevor Wilson (5-0) L: Bob Tewksbury (3-1) | Second | 9 out |
| Wednesday, July 4 |
| » Defeated Cardinals (32-47), 9-2 | Candlestick Park (20-20) | 41-38 | Won 3 |
| » W: John Burkett (8-2) L: Jose DeLeon (6-7) S: Jeff Brantley (12) | Second | 8 out |
| Friday, July 6 |
| » Lost to Cubs (36-46), 5-2 | Candlestick Park (20-21) | 41-39 | |
| » W: Shawn Boskie (3-4) L: Scott Garrelts (5-7) S: Bill Long (2) | Second | 9½ out |
| Saturday, July 7 |
| » Defeated Cubs (36-47), 10-9 | Candlestick Park (21-21) | 42-39 | |
| » W: Jeff Brantley (3-1) L: Les Lancaster (7-5) | Second | 9½ out |
| Sunday, July 8 |
| » Defeated Cubs (36-48), 5-3 | Candlestick Park (22-21) | 43-39 | Won 2 |
| » W: Trevor Wilson (6-0) L: Jeff Pico (4-2) S: Jeff Brantley (13) | Second | 8 out |
| » Defeated Cubs (36-49), 10-4 | Candlestick Park (23-21) | 44-39 | Won 3 |
| » W: John Burkett (9-2) L: Mike Bielecki (3-8) | Second | 8 out |
| Thursday, July 12 |
| » Defeated Cardinals (35-49), 4-2 | Busch Stadium II (2-1) | 45-39 | Won 4 |
| » W: Scott Garrelts (6-7) L: Bryn Smith (6-7) | Second | 7½ out |
| Friday, July 13 |
| » Defeated Cardinals (35-50), 6-1 | Busch Stadium II (3-1) | 46-39 | Won 5 |
| » W: Don Robinson (5-1) L: Jose DeLeon (6-8) S: Jeff Brantley (14) | Second | 7½ out |
| Saturday, July 14 |
| » Lost to Cardinals (36-50), 2-1 | Busch Stadium II (3-2) | 46-40 | |
| » W: Lee Smith (5-3) L: Trevor Wilson (6-1) | Second | 7½ out |
| Sunday, July 15 |
| » Defeated Cardinals (36-51), 5-3 | Busch Stadium II (4-2) | 47-40 | |
| » W: Steve Bedrosian (4-5) L: Tom Niedenfuer (0-4) S: Jeff Brantley (15) | Second | 7½ out |
| Monday, July 16 |
| » Defeated Pirates (52-34), 6-1 | Three Rivers Stadium (2-2) | 48-40 | Won 2 |
| » W: Scott Garrelts (7-7) L: Rick Reed (2-1) | Second | 7½ out |
| Tuesday, July 17 |
| » Defeated Pirates (52-35), 6-3 | Three Rivers Stadium (3-2) | 49-40 | Won 3 |
| » W: Don Robinson (6-1) L: John Smiley (4-4) | Second | 7½ out |
| Wednesday, July 18 |
| » Lost to Pirates (53-35), 11-2 | Three Rivers Stadium (3-3) | 49-41 | |
| » W: Doug Drabek (11-4) L: Trevor Wilson (6-2) | Second | 8½ out |
| Friday, July 20 |
| » Lost to Cubs (41-52), 5-4 | Wrigley Field (2-2) | 49-42 | Lost 2 |
| » W: Mike Bielecki (4-8) L: Jeff Brantley (3-2) | Second | 9 out |
| Saturday, July 21 |
| » Lost to Cubs (42-52), 3-2 | Wrigley Field (2-3) | 49-43 | Lost 3 |
| » W: Mike Harkey (8-4) L: Jeff Brantley (3-3) | Second | 10 out |
| » Major-league debuts: Mark Leonard (Giants) |
| Sunday, July 22 |
| » Lost to Cubs (43-52), 4-2 | Wrigley Field (2-4) | 49-44 | Lost 4 |
| » W: Paul Assenmacher (3-2) L: Atlee Hammaker (4-5) S: Jeff Pico (2) | Second | 10 out |
| Monday, July 23 |
| » Lost to Dodgers (46-47), 11-1 | Dodger Stadium (2-1) | 49-45 | Lost 5 |
| » W: Fernando Valenzuela (8-8) L: Trevor Wilson (6-3) | Second | 11 out |
| Tuesday, July 24 |
| » Lost to Dodgers (47-47), 9-2 | Dodger Stadium (2-2) | 49-46 | Lost 6 |
| » W: Ramon Martinez (12-4) L: John Burkett (9-3) | Second | 11 out |
| Wednesday, July 25 |
| » Defeated Dodgers (47-48), 7-2 | Dodger Stadium (3-2) | 50-46 | |
| » W: Scott Garrelts (8-7) L: Mike Morgan (8-9) | Second | 9½ out |
| Thursday, July 26 |
| » Defeated Reds (59-37), 4-3 | Candlestick Park (24-21) | 51-46 | Won 2 |
| » W: Mark Thurmond (2-2) L: Jose Rijo (6-4) S: Jeff Brantley (16) | Second | 8½ out |
| Friday, July 27 |
| » Defeated Reds (59-38), 4-3 | Candlestick Park (25-21) | 52-46 | Won 3 |
| » W: Don Robinson (7-1) L: Scott Scudder (2-4) | Second | 7½ out |
| Saturday, July 28 |
| » Defeated Reds (59-39), 3-2 | Candlestick Park (26-21) | 53-46 | Won 4 |
| » W: Steve Bedrosian (5-5) L: Randy Myers (3-3) | Second | 6½ out |
| Sunday, July 29 |
| » Defeated Reds (59-40), 4-0 | Candlestick Park (27-21) | 54-46 | Won 5 |
| » W: Scott Garrelts (9-7) L: Jack Armstrong (11-7) | Second | 5½ out |
| Monday, July 30 |
| » Lost to Astros (43-60), 6-1 | Candlestick Park (27-22) | 54-47 | |
| » W: Danny Darwin (6-1) L: Steve Bedrosian (5-6) | Second | 5½ out |
| Tuesday, July 31 |
| » Defeated Astros (43-61), 3-2 | Candlestick Park (28-22) | 55-47 | |
| » W: Jeff Brantley (4-3) L: Juan Agosto (5-6) | Second | 5½ out |
| » Major-league debuts: Rafael Novoa (Giants) |
| Wednesday, August 1 |
| » Defeated Dodgers (52-50), 2-1 | Dodger Stadium (4-2) | 56-47 | Won 2 |
| » W: Don Robinson (8-1) L: Jay Howell (3-5) | Second | 5½ out |
| » Major-league debuts: Jim Neidlinger (Dodgers) |
| Thursday, August 2 |
| » Defeated Dodgers (52-51), 3-1 | Candlestick Park (29-22) | 57-47 | Won 3 |
| » W: John Burkett (10-3) L: Fernando Valenzuela (8-9) S: Mark Thurmond (3) | Second | 4½ out |
| Friday, August 3 |
| » Lost to Dodgers (53-51), 11-2 | Candlestick Park (29-23) | 57-48 | |
| » W: Ramon Martinez (14-4) L: Scott Garrelts (9-8) | Second | 4½ out |
| Saturday, August 4 |
| » Defeated Dodgers (53-52), 2-1 | Candlestick Park (30-23) | 58-48 | |
| » W: Trevor Wilson (7-3) L: Mike Morgan (9-10) | Second | 3½ out |
| Sunday, August 5 |
| » Lost to Dodgers (54-52), 12-6 | Candlestick Park (30-24) | 58-49 | |
| » W: Mike Hartley (3-1) L: Rafael Novoa (0-1) | Second | 4½ out |
| Monday, August 6 |
| » Lost to Astros (48-61), 4-1 | Astrodome (1-3) | 58-50 | Lost 2 |
| » W: Bill Gullickson (8-8) L: Don Robinson (8-2) | Second | 5 out |
| Tuesday, August 7 |
| » Lost to Astros (49-61), 4-0 | Astrodome (1-4) | 58-51 | Lost 3 |
| » W: Mark Portugal (5-9) L: John Burkett (10-4) S: Dave Smith (19) | Second | 6 out |
| » Major-league debuts: Tuffy Rhodes (Astros) |
| Wednesday, August 8 |
| » Defeated Astros (49-62), 8-4 | Astrodome (2-4) | 59-51 | |
| » W: Trevor Wilson (8-3) L: Juan Agosto (5-7) S: Mark Thurmond (4) | Second | 5 out |
| Friday, August 10 |
| » Lost to Reds (64-46), 7-0 | Riverfront Stadium (1-3) | 59-52 | |
| » W: Norm Charlton (9-6) L: Don Robinson (8-3) | Second | 5½ out |
| Saturday, August 11 |
| » Defeated Reds (64-47), 4-2 | Riverfront Stadium (2-3) | 60-52 | |
| » W: John Burkett (11-4) L: Jose Rijo (8-5) S: Jeff Brantley (17) | Second | 4½ out |
| Sunday, August 12 |
| » Lost to Reds (65-47), 6-4 | Riverfront Stadium (2-4) | 60-53 | |
| » W: Tom Browning (12-6) L: Scott Garrelts (9-9) S: Randy Myers (23) | Second | 5½ out |
| Monday, August 13 |
| » Lost to Reds (66-47), 6-5 | Riverfront Stadium (2-5) | 60-54 | Lost 2 |
| » W: Tim Layana (5-0) L: Trevor Wilson (8-4) S: Randy Myers (24) | Second | 6½ out |
| Tuesday, August 14 |
| » Lost to Phillies (53-60), 4-3 | Veteran's Stadium (1-3) | 60-55 | Lost 3 |
| » W: Dennis Cook (8-2) L: Steve Bedrosian (5-7) | Second | 7½ out |
| Wednesday, August 15 |
| » Lost to Phillies (54-60), 6-0 | Veteran's Stadium (1-4) | 60-56 | Lost 4 |
| » W: Terry Mulholland (7-6) L: Don Robinson (8-4) | Second | 8½ out |
| Thursday, August 16 |
| » Lost to Phillies (55-60), 6-4 | Veteran's Stadium (1-5) | 60-57 | Lost 5 |
| » W: Roger McDowell (4-6) L: Mark Thurmond (2-3) | Second | 9 out |
| Former Giant Fay Thomas dies in Chatsworth, CA at the age of 87. |
| Friday, August 17 |
| » Defeated Mets (66-50), 3-2 | Candlestick Park (31-24) | 61-57 | |
| » W: Scott Garrelts (10-9) L: Frank Viola (15-8) S: Steve Bedrosian (8) | Second | 7½ out |
| Saturday, August 18 |
| » Lost to Mets (67-50), 9-2 | Candlestick Park (31-25) | 61-58 | |
| » W: David Cone (9-6) L: Trevor Wilson (8-5) | Third | 7½ out |
| Sunday, August 19 |
| » Lost to Mets (68-50), 10-9 | Candlestick Park (31-26) | 61-59 | Lost 2 |
| » W: Dwight Gooden (13-6) L: Mike LaCoss (3-2) S: John Franco (28) | Third | 7½ out |
| Monday, August 20 |
| » Defeated Expos (63-58), 4-2 | Candlestick Park (32-26) | 62-59 | |
| » W: Don Robinson (9-4) L: Kevin Gross (8-10) | Third | 6½ out |
| Tuesday, August 21 |
| » Lost to Expos (64-58), 10-5 | Candlestick Park (32-27) | 62-60 | |
| » W: Mel Rojas (1-1) L: Trevor Wilson (8-6) | Third | 7½ out |
| Wednesday, August 22 |
| » Defeated Expos (64-59), 2-1 | Candlestick Park (33-27) | 63-60 | |
| » W: Steve Bedrosian (6-7) L: Steve Frey (5-2) | Third | 7½ out |
| Thursday, August 23 |
| » Defeated Phillies (58-64), 6-3 | Candlestick Park (34-27) | 64-60 | Won 2 |
| » W: Francisco Oliveras (1-2) L: Dennis Cook (8-3) S: Steve Bedrosian (9) | Third | 6½ out |
| Friday, August 24 |
| » Defeated Phillies (58-65), 13-2 | Candlestick Park (35-27) | 65-60 | Won 3 |
| » W: Mike LaCoss (4-2) L: Pat Combs (6-9) | Second | 6½ out |
| » Major-league debuts: Mark Dewey (Giants) |
| Former Giant Mickey Witek dies in Kingston, PA at the age of 75. |
| Saturday, August 25 |
| » Defeated Phillies (58-66), 4-2 | Candlestick Park (36-27) | 66-60 | Won 4 |
| » W: Don Robinson (10-4) L: Terry Mulholland (7-8) S: Jeff Brantley (18) | Second | 6½ out |
| Sunday, August 26 |
| » Lost to Phillies (59-66), 5-1 | Candlestick Park (36-28) | 66-61 | |
| » W: Jason Grimsley (1-0) L: John Burkett (11-5) | Third | 7½ out |
| Tuesday, August 28 |
| » Lost to Expos (67-61), 5-2 | Stade Olympique (1-4) | 66-62 | Lost 2 |
| » W: Mark Gardner (7-7) L: Scott Garrelts (10-10) S: Tim Burke (15) | Third | 8½ out |
| Wednesday, August 29 |
| » Defeated Expos (67-62), 6-5 | Stade Olympique (2-4) | 67-62 | |
| » W: Jeff Brantley (5-3) L: Bill Sampen (10-5) S: Steve Bedrosian (10) | Third | 7½ out |
| Thursday, August 30 |
| » Lost to Mets (73-55), 12-2 | Shea Stadium (1-2) | 67-63 | |
| » W: Sid Fernandez (9-10) L: Mike LaCoss (4-3) | Third | 8½ out |
| Friday, August 31 |
| » Lost to Mets (74-55), 4-3 | Shea Stadium (1-3) | 67-64 | Lost 2 |
| » W: Frank Viola (17-9) L: Steve Bedrosian (6-8) | Third | 8½ out |
| Saturday, September 1 |
| » Lost to Mets (75-55), 6-5 | Shea Stadium (1-4) | 67-65 | Lost 3 |
| » W: Julio Valera (1-0) L: John Burkett (11-6) S: John Franco (31) | Third | 9½ out |
| Sunday, September 2 |
| » Lost to Mets (76-55), 10-6 | Shea Stadium (1-5) | 67-66 | Lost 4 |
| » W: David Cone (11-7) L: Paul McClellan (0-1) S: Alejandro Pena (4) | Third | 10½ out |
| » Major-league debuts: Paul McClellan (Giants) |
| Monday, September 3 |
| » Defeated Padres (61-72), 5-4 | San Diego/Jack Murphy Stadium (6-2) | 68-66 | |
| » W: Kelly Downs (1-0) L: Calvin Schiraldi (3-8) S: Jeff Brantley (19) | Third | 9½ out |
| Tuesday, September 4 |
| » Defeated Padres (61-73), 6-4 | San Diego/Jack Murphy Stadium (7-2) | 69-66 | Won 2 |
| » W: Mike LaCoss (5-3) L: Atlee Hammaker (4-7) S: John Burkett (1) | Third | 8½ out |
| Wednesday, September 5 |
| » Lost to Reds (78-57), 5-3 | Candlestick Park (36-29) | 69-67 | |
| » W: Norm Charlton (11-7) L: Don Robinson (10-5) S: Rob Dibble (10) | Third | 9½ out |
| Thursday, September 6 |
| » Defeated Reds (78-58), 6-2 | Candlestick Park (37-29) | 70-67 | |
| » W: Scott Garrelts (11-10) L: Rick Mahler (7-6) S: Steve Bedrosian (11) | Third | 8½ out |
| Friday, September 7 |
| » Lost to Astros (63-75), 2-1 | Candlestick Park (37-30) | 70-68 | |
| » W: Danny Darwin (11-2) L: John Burkett (11-7) S: Dave Smith (23) | Third | 8½ out |
| Saturday, September 8 |
| » Defeated Astros (63-76), 2-1 | Candlestick Park (38-30) | 71-68 | |
| » W: Steve Bedrosian (7-8) L: Brian Meyer (0-2) | Third | 8½ out |
| Sunday, September 9 |
| » Defeated Astros (63-77), 5-1 | Candlestick Park (39-30) | 72-68 | Won 2 |
| » W: Mike LaCoss (6-3) L: Mark Portugal (8-10) | Third | 7½ out |
| Monday, September 10 |
| » Defeated Braves (58-83), 7-6 | Candlestick Park (40-30) | 73-68 | Won 3 |
| » W: Steve Bedrosian (8-8) L: Kent Mercker (4-5) | Third | 7 out |
| Tuesday, September 11 |
| » Defeated Braves (58-84), 2-0 | Candlestick Park (41-30) | 74-68 | Won 4 |
| » W: Scott Garrelts (12-10) L: Mark Grant (2-3) S: Steve Bedrosian (12) | Second | 7 out |
| Wednesday, September 12 |
| » Defeated Braves (58-85), 8-3 | Candlestick Park (42-30) | 75-68 | Won 5 |
| » W: John Burkett (12-7) L: Charlie Leibrandt (8-9) S: Francisco Oliveras (1) | Second | 6 out |
| Friday, September 14 |
| » Lost to Astros (65-79), 2-1 | Astrodome (2-5) | 75-69 | |
| » W: Mark Portugal (9-10) L: Kelly Downs (1-1) S: Juan Agosto (3) | Third | 6½ out |
| Saturday, September 15 |
| » Lost to Astros (66-79), 3-2 | Astrodome (2-6) | 75-70 | Lost 2 |
| » W: Xavier Hernandez (1-0) L: Steve Bedrosian (8-9) | Third | 6½ out |
| Sunday, September 16 |
| » Lost to Astros (67-79), 3-2 | Astrodome (2-7) | 75-71 | Lost 3 |
| » W: Juan Agosto (8-7) L: Don Robinson (10-6) | Third | 7½ out |
| » Major-league debuts: Andres Santana (Giants) |
| Monday, September 17 |
| » Lost to Reds (83-63), 4-0 | Riverfront Stadium (2-6) | 75-72 | Lost 4 |
| » W: Jose Rijo (12-7) L: Scott Garrelts (12-11) | Third | 8½ out |
| Tuesday, September 18 |
| » Defeated Reds (83-64), 5-3 | Riverfront Stadium (3-6) | 76-72 | |
| » |