| Monday, January 31 |
| Former Giant Sam Gibson dies in High Point, NC at the age of 84. |
| Sunday, April 3 |
| Former Giant Mickey Livingston dies in Newberry, SC at the age of 69. |
| Tuesday, April 5 |
| » Lost to Padres (1-0), 16-13 | Candlestick Park (0-1) | 0-1 | |
| » W: Tim Lollar (1-0) L: Mike Krukow (0-1) S: Gary Lucas (1) | Second | 1 out |
| Wednesday, April 6 |
| » Lost to Padres (2-0), 5-3 | Candlestick Park (0-2) | 0-2 | Lost 2 |
| » W: Dave Dravecky (1-0) L: Bill Laskey (0-1) | Third | 2 out |
| Friday, April 8 |
| » Defeated Phillies (0-3), 3-2 | Candlestick Park (1-2) | 1-2 | |
| » W: Fred Breining (1-0) L: Larry Christenson (0-1) S: Greg Minton (1) | Second | 1 out |
| Saturday, April 9 |
| » Lost to Phillies (1-3), 5-4 | Candlestick Park (1-3) | 1-3 | |
| » W: Sid Monge (1-0) L: Mike Krukow (0-2) S: Ron Reed (1) | Third | 2 out |
| Sunday, April 10 |
| » Lost to Phillies (2-3), 10-2 | Candlestick Park (1-4) | 1-4 | Lost 2 |
| » W: Steve Carlton (1-1) L: Bill Laskey (0-2) | Fourth | 3 out |
| Tuesday, April 12 |
| » Defeated Padres (2-5), 6-5 | San Diego/Jack Murphy Stadium (1-0) | 2-4 | |
| » W: Fred Breining (2-0) L: Dave Dravecky (1-1) S: Greg Minton (2) | Third | 3½ out |
| Wednesday, April 13 |
| » Lost to Padres (3-5), 2-1 | San Diego/Jack Murphy Stadium (1-1) | 2-5 | |
| » W: Eric Show (1-0) L: Atlee Hammaker (0-1) S: Gary Lucas (2) | Fifth | 4½ out |
| Thursday, April 14 |
| » Lost to Padres (4-5), 6-4 | San Diego/Jack Murphy Stadium (1-2) | 2-6 | Lost 2 |
| » W: John Montefusco (1-0) L: Andy McGaffigan (0-1) S: Gary Lucas (3) | Fifth | 5 out |
| Friday, April 15 |
| » Lost to Reds (6-3), 3-1 | Candlestick Park (1-5) | 2-7 | Lost 3 |
| » W: Rich Gale (1-0) L: Bill Laskey (0-3) S: Tom Hume (2) | Fifth | 5½ out |
| Former Giant Bill Sarni dies in Creve Coeur, MO at the age of 56. |
| Saturday, April 16 |
| » Lost to Reds (7-3), 8-3 | Candlestick Park (1-6) | 2-8 | Lost 4 |
| » W: Mario Soto (3-1) L: Fred Breining (2-1) | Fifth | 6 out |
| Sunday, April 17 |
| » Defeated Reds (7-4), 3-0 | Candlestick Park (2-6) | 3-8 | |
| » W: Atlee Hammaker (1-1) L: Joe Price (1-1) | Fifth | 6 out |
| » Lost to Reds (8-4), 12-3 | Candlestick Park (2-7) | 3-9 | |
| » W: Frank Pastore (2-1) L: Mark Calvert (0-1) | Fifth | 6 out |
| Monday, April 18 |
| » Lost to Dodgers (9-3), 4-3 | Candlestick Park (2-8) | 3-10 | Lost 2 |
| » W: Tom Niedenfuer (1-0) L: Greg Minton (0-1) S: Dave Stewart (3) | Fifth | 6½ out |
| Wednesday, April 20 |
| » Defeated Dodgers (9-4), 3-2 | Candlestick Park (3-8) | 4-10 | |
| » W: Greg Minton (1-1) L: Fernando Valenzuela (2-1) | Fifth | 6 out |
| Friday, April 22 |
| » Lost to Cubs (3-10), 7-2 | Wrigley Field (0-1) | 4-11 | |
| » W: Fergie Jenkins (1-2) L: Bill Laskey (0-4) S: Willie Hernandez (1) | Fifth | 7 out |
| Saturday, April 23 |
| » Defeated Cubs (3-11), 5-0 | Wrigley Field (1-1) | 5-11 | |
| » W: Atlee Hammaker (2-1) L: Steve Trout (1-3) | Fifth | 6½ out |
| Sunday, April 24 |
| » Lost to Cubs (4-11), 5-1 | Wrigley Field (1-2) | 5-12 | |
| » W: Paul Moskau (1-1) L: Andy McGaffigan (0-2) S: Lee Smith (2) | Fifth | 8 out |
| Tuesday, April 26 |
| » Lost to Pirates (7-7), 3-0 | Three Rivers Stadium (0-1) | 5-13 | Lost 2 |
| » W: Larry McWilliams (2-2) L: Fred Breining (2-2) | Sixth | 9 out |
| Wednesday, April 27 |
| » Defeated Pirates (7-8), 3-2 | Three Rivers Stadium (1-1) | 6-13 | |
| » W: Bill Laskey (1-4) L: Rick Rhoden (0-2) S: Greg Minton (3) | Sixth | 8 out |
| Friday, April 29 |
| » Game at Busch Stadium II interrupted in the 14th inning with the score of Giants 5, Cardinals 5. Completed on April 30. |
| Saturday, April 30 |
| » Lost to Cardinals (10-5), 6-5 | Busch Stadium II (0-1) | 6-14 | |
| » W: Doug Bair (1-0) L: Mark Calvert (0-2) | Sixth | 8 out |
| » Defeated Cardinals (10-6), 5-0 | Busch Stadium II (1-1) | 7-14 | |
| » W: Andy McGaffigan (1-2) L: Joaquin Andujar (2-3) S: Gary Lavelle (1) | Sixth | 8 out |
| Sunday, May 1 |
| » Lost to Cardinals (11-6), 10-9 | Busch Stadium II (1-2) | 7-15 | |
| » W: John Stuper (2-1) L: Fred Breining (2-3) S: Bruce Sutter (3) | Sixth | 9 out |
| Tuesday, May 3 |
| » Defeated Cubs (6-16), 5-4 | Candlestick Park (4-8) | 8-15 | |
| » W: Bill Laskey (2-4) L: Steve Trout (1-5) | Sixth | 9 out |
| Wednesday, May 4 |
| » Defeated Cubs (6-17), 7-4 | Candlestick Park (5-8) | 9-15 | Won 2 |
| » W: Atlee Hammaker (3-1) L: Paul Moskau (1-2) | Sixth | 8 out |
| Friday, May 6 |
| » Defeated Pirates (9-12), 2-1 | Candlestick Park (6-8) | 10-15 | Won 3 |
| » W: Andy McGaffigan (2-2) L: John Candelaria (2-3) S: Gary Lavelle (2) | Sixth | 8 out |
| Saturday, May 7 |
| » Defeated Pirates (9-13), 5-1 | Candlestick Park (7-8) | 11-15 | Won 4 |
| » W: Fred Breining (3-3) L: Rick Rhoden (1-3) | Fifth | 8 out |
| Sunday, May 8 |
| » Defeated Pirates (9-14), 12-1 | Candlestick Park (8-8) | 12-15 | Won 5 |
| » W: Bill Laskey (3-4) L: Jim Bibby (1-3) | Fifth | 8 out |
| Monday, May 9 |
| » Defeated Cardinals (12-12), 5-4 | Candlestick Park (9-8) | 13-15 | Won 6 |
| » W: Gary Lavelle (1-0) L: Bruce Sutter (3-1) | Fourth | 8 out |
| Tuesday, May 10 |
| » Lost to Cardinals (13-12), 8-4 | Candlestick Park (9-9) | 13-16 | |
| » W: John Stuper (3-1) L: Andy McGaffigan (2-3) | Fourth | 8 out |
| Thursday, May 12 |
| » Defeated Reds (15-17), 4-2 | Riverfront Stadium (1-0) | 14-16 | |
| » W: Mike Krukow (1-2) L: Bruce Berenyi (3-3) S: Gary Lavelle (3) | Fourth | 8 out |
| Friday, May 13 |
| » Defeated Reds (15-18), 8-5 | Riverfront Stadium (2-0) | 15-16 | Won 2 |
| » W: Fred Breining (4-3) L: Rich Gale (3-3) | Third | 7 out |
| Saturday, May 14 |
| » Defeated Reds (15-19), 8-7 | Riverfront Stadium (3-0) | 16-16 | Won 3 |
| » W: Bill Laskey (4-4) L: Frank Pastore (2-5) S: Greg Minton (4) | Third | 7 out |
| Sunday, May 15 |
| » Defeated Reds (15-20), 5-2 | Riverfront Stadium (4-0) | 17-16 | Won 4 |
| » W: Atlee Hammaker (4-1) L: Tom Hume (0-3) S: Gary Lavelle (4) | Third | 7 out |
| Tuesday, May 17 |
| » Lost to Phillies (18-12), 2-1 | Veteran's Stadium (0-1) | 17-17 | |
| » W: John Denny (4-2) L: Andy McGaffigan (2-4) S: Al Holland (1) | Third | 7 out |
| Wednesday, May 18 |
| » Defeated Phillies (18-13), 8-1 | Veteran's Stadium (1-1) | 18-17 | |
| » W: Mike Krukow (2-2) L: Dick Ruthven (1-3) S: Greg Minton (5) | Third | 7 out |
| Friday, May 20 |
| » Lost to Expos (17-16), 7-1 | Stade Olympique (0-1) | 18-18 | |
| » W: Steve Rogers (6-1) L: Fred Breining (4-4) | Third | 7 out |
| Saturday, May 21 |
| » Defeated Expos (17-17), 5-2 | Stade Olympique (1-1) | 19-18 | |
| » W: Bill Laskey (5-4) L: Scott Sanderson (3-4) S: Gary Lavelle (5) | Third | 6½ out |
| Sunday, May 22 |
| » Lost to Expos (18-17), 2-0 | Stade Olympique (1-2) | 19-19 | |
| » W: Charlie Lea (3-1) L: Atlee Hammaker (4-2) S: Jeff Reardon (3) | Third | 7½ out |
| Monday, May 23 |
| » Lost to Mets (15-22), 4-3 | Shea Stadium (0-1) | 19-20 | Lost 2 |
| » W: Jesse Orosco (3-0) L: Greg Minton (1-2) | Third | 8½ out |
| Tuesday, May 24 |
| » Defeated Mets (15-23), 6-2 | Shea Stadium (1-1) | 20-20 | |
| » W: Mike Krukow (3-2) L: Ed Lynch (2-2) | Third | 8½ out |
| Wednesday, May 25 |
| » Defeated Mets (15-24), 7-6 | Shea Stadium (2-1) | 21-20 | Won 2 |
| » W: Renie Martin (1-0) L: Neil Allen (2-5) S: Gary Lavelle (6) | Third | 8½ out |
| Thursday, May 26 |
| » Defeated Dodgers (29-12), 5-3 | Dodger Stadium (1-0) | 22-20 | Won 3 |
| » W: Bill Laskey (6-4) L: Jerry Reuss (5-3) S: Greg Minton (6) | Third | 7½ out |
| Friday, May 27 |
| » Defeated Dodgers (29-13), 6-3 | Dodger Stadium (2-0) | 23-20 | Won 4 |
| » W: Atlee Hammaker (5-2) L: Bob Welch (3-4) S: Gary Lavelle (7) | Third | 6½ out |
| Saturday, May 28 |
| » Lost to Dodgers (30-13), 5-0 | Dodger Stadium (2-1) | 23-21 | |
| » W: Fernando Valenzuela (6-2) L: Andy McGaffigan (2-5) | Third | 7½ out |
| Sunday, May 29 |
| » Defeated Dodgers (30-14), 6-4 | Dodger Stadium (3-1) | 24-21 | |
| » W: Gary Lavelle (2-0) L: Dave Stewart (4-1) | Third | 6½ out |
| Monday, May 30 |
| » Defeated Mets (16-27), 5-0 | Candlestick Park (10-9) | 25-21 | Won 2 |
| » W: Fred Breining (5-4) L: Neil Allen (2-6) | Third | 6½ out |
| Tuesday, May 31 |
| » Defeated Mets (16-28), 2-1 | Candlestick Park (11-9) | 26-21 | Won 3 |
| » W: Bill Laskey (7-4) L: Scott Holman (0-3) S: Gary Lavelle (8) | Third | 6½ out |
| Wednesday, June 1 |
| » Defeated Mets (16-29), 4-2 | Candlestick Park (12-9) | 27-21 | Won 4 |
| » W: Atlee Hammaker (6-2) L: Tom Seaver (3-5) S: Jim Barr (1) | Third | 6½ out |
| Thursday, June 2 |
| » Lost to Expos (24-21), 11-4 | Candlestick Park (12-10) | 27-22 | |
| » W: Ray Burris (1-2) L: Andy McGaffigan (2-6) | Third | 7½ out |
| Friday, June 3 |
| » Lost to Expos (25-21), 9-2 | Candlestick Park (12-11) | 27-23 | Lost 2 |
| » W: Bill Gullickson (5-6) L: Mike Krukow (3-3) | Third | 7½ out |
| Saturday, June 4 |
| » Defeated Expos (25-22), 4-2 | Candlestick Park (13-11) | 28-23 | |
| » W: Gary Lavelle (3-0) L: Jeff Reardon (2-4) | Third | 7½ out |
| Sunday, June 5 |
| » Lost to Expos (26-22), 12-9 | Candlestick Park (13-12) | 28-24 | |
| » W: Dan Schatzeder (3-0) L: Bill Laskey (7-5) | Third | 7½ out |
| Tuesday, June 7 |
| » Lost to Astros (25-30), 4-2 | Astrodome (0-1) | 28-25 | Lost 2 |
| » W: Frank LaCorte (4-2) L: Atlee Hammaker (6-3) S: Frank DiPino (4) | Third | 7½ out |
| Wednesday, June 8 |
| » Lost to Astros (26-30), 1-0 | Astrodome (0-2) | 28-26 | Lost 3 |
| » W: Bill Dawley (4-1) L: Gary Lavelle (3-1) | Third | 8½ out |
| Thursday, June 9 |
| » Lost to Astros (27-30), 3-0 | Astrodome (0-3) | 28-27 | Lost 4 |
| » W: Bob Knepper (2-8) L: Mike Krukow (3-4) | Third | 9½ out |
| Friday, June 10 |
| » Defeated Braves (35-21), 6-4 | Atlanta-Fulton County Stadium (1-0) | 29-27 | |
| » W: Gary Lavelle (4-1) L: Rick Camp (5-6) S: Greg Minton (7) | Third | 9 out |
| » Lost to Braves (36-21), 7-3 | Atlanta-Fulton County Stadium (1-1) | 29-28 | |
| » W: Pete Falcone (4-1) L: Bill Laskey (7-6) S: Donnie Moore (2) | Third | 9 out |
| Saturday, June 11 |
| » Defeated Braves (36-22), 7-6 | Atlanta-Fulton County Stadium (2-1) | 30-28 | |
| » W: Atlee Hammaker (7-3) L: Gene Garber (1-1) S: Gary Lavelle (9) | Third | 9 out |
| Sunday, June 12 |
| » Lost to Braves (37-22), 3-2 | Atlanta-Fulton County Stadium (2-2) | 30-29 | |
| » W: Pascual Perez (8-1) L: Andy McGaffigan (2-7) S: Gene Garber (5) | Third | 9 out |
| Tuesday, June 14 |
| » Lost to Astros (31-31), 3-2 | Candlestick Park (13-13) | 30-30 | Lost 2 |
| » W: Dave Smith (1-1) L: Greg Minton (1-3) | Third | 10½ out |
| Wednesday, June 15 |
| » Defeated Astros (31-32), 7-1 | Candlestick Park (14-13) | 31-30 | |
| » W: Fred Breining (6-4) L: Mike LaCoss (4-5) | Third | 9½ out |
| Thursday, June 16 |
| » Lost to Astros (32-32), 7-2 | Candlestick Park (14-14) | 31-31 | |
| » W: Mike Scott (2-3) L: Bill Laskey (7-7) S: Frank DiPino (6) | Third | 10½ out |
| Friday, June 17 |
| » Defeated Braves (38-25), 2-1 | Candlestick Park (15-14) | 32-31 | |
| » W: Atlee Hammaker (8-3) L: Pascual Perez (8-2) S: Greg Minton (8) | Fourth | 10½ out |
| Saturday, June 18 |
| » Defeated Braves (38-26), 5-4 | Candlestick Park (16-14) | 33-31 | Won 2 |
| » W: Gary Lavelle (5-1) L: Gene Garber (2-2) | Third | 9½ out |
| Sunday, June 19 |
| » Defeated Braves (38-27), 9-6 | Candlestick Park (17-14) | 34-31 | Won 3 |
| » W: Mike Krukow (4-4) L: Craig McMurtry (7-4) S: Gary Lavelle (10) | Third | 9½ out |
| Monday, June 20 |
| » Defeated Reds (28-39), 4-3 | Candlestick Park (18-14) | 35-31 | Won 4 |
| » W: Greg Minton (2-3) L: Ted Power (1-4) | Third | 8½ out |
| Tuesday, June 21 |
| » Lost to Reds (29-39), 6-5 | Candlestick Park (18-15) | 35-32 | |
| » W: Ted Power (2-4) L: Jim Barr (0-1) | Third | 8½ out |
| Wednesday, June 22 |
| » Lost to Reds (30-39), 4-2 | Candlestick Park (18-16) | 35-33 | Lost 2 |
| » W: Mario Soto (9-5) L: Mark Davis (0-1) | Third | 8½ out |
| Friday, June 24 |
| » Defeated Padres (35-34), 5-0 | Candlestick Park (19-16) | 36-33 | |
| » W: Mike Krukow (5-4) L: Andy Hawkins (3-5) | Third | 8 out |
| Saturday, June 25 |
| » Lost to Padres (36-34), 3-2 | Candlestick Park (19-17) | 36-34 | |
| » W: John Montefusco (6-1) L: Gary Lavelle (5-2) S: Gary Lucas (8) | Third | 9 out |
| Sunday, June 26 |
| » Defeated Padres (36-35), 2-0 | Candlestick Park (20-17) | 37-34 | |
| » W: Atlee Hammaker (9-3) L: Tim Lollar (3-5) | Third | 7½ out |
| » Defeated Padres (36-36), 4-3 | Candlestick Park (21-17) | 38-34 | Won 2 |
| » W: Bill Laskey (8-7) L: Eric Show (8-5) S: Gary Lavelle (11) | Third | 7½ out |
| Tuesday, June 28 |
| » Lost to Reds (31-44), 5-4 | Riverfront Stadium (4-1) | 38-35 | |
| » W: Ted Power (3-4) L: Greg Minton (2-4) S: Ben Hayes (2) | Third | 8½ out |
| Wednesday, June 29 |
| » Lost to Reds (32-44), 7-6 | Riverfront Stadium (4-2) | 38-36 | Lost 2 |
| » W: Ted Power (4-4) L: Greg Minton (2-5) | Third | 8½ out |
| Thursday, June 30 |
| » Lost to Reds (33-44), 15-5 | Riverfront Stadium (4-3) | 38-37 | Lost 3 |
| » W: Charlie Puleo (3-4) L: Fred Breining (6-5) S: Ted Power (2) | Third | 8½ out |
| Friday, July 1 |
| » Defeated Padres (38-38), 4-3 | San Diego/Jack Murphy Stadium (2-2) | 39-37 | |
| » W: Bill Laskey (9-7) L: Tim Lollar (3-6) S: Jim Barr (2) | Third | 8½ out |
| Saturday, July 2 |
| » Lost to Padres (39-38), 5-4 | San Diego/Jack Murphy Stadium (2-3) | 39-38 | |
| » W: Gary Lucas (3-4) L: Atlee Hammaker (9-4) | Third | 8½ out |
| Sunday, July 3 |
| » Lost to Padres (40-38), 4-1 | San Diego/Jack Murphy Stadium (2-4) | 39-39 | Lost 2 |
| » W: Dave Dravecky (12-5) L: Mark Davis (0-2) | Fourth | 8½ out |
| Monday, July 4 |
| » Lost to Padres (41-38), 4-3 | San Diego/Jack Murphy Stadium (2-5) | 39-40 | Lost 3 |
| » W: Mark Thurmond (2-0) L: Mike Krukow (5-5) S: Gary Lucas (9) | Fifth | 9½ out |
| Friday, July 8 |
| » Defeated Cubs (38-42), 4-1 | Candlestick Park (22-17) | 40-40 | |
| » W: Bill Laskey (10-7) L: Dickie Noles (2-4) S: Gary Lavelle (12) | Fifth | 9½ out |
| Saturday, July 9 |
| » Lost to Cubs (39-42), 4-2 | Candlestick Park (22-18) | 40-41 | |
| » W: Chuck Rainey (9-7) L: Mark Davis (0-3) S: Lee Smith (11) | Fifth | 10½ out |
| Sunday, July 10 |
| » Defeated Cubs (39-43), 10-8 | Candlestick Park (23-18) | 41-41 | |
| » W: Gary Lavelle (6-2) L: Bill Campbell (2-5) S: Renie Martin (1) | Fourth | 9 out |
| » Defeated Cubs (39-44), 4-2 | Candlestick Park (24-18) | 42-41 | Won 2 |
| » W: Atlee Hammaker (10-4) L: Dick Ruthven (5-7) | Fourth | 9 out |
| Monday, July 11 |
| » Lost to Pirates (37-43), 3-2 | Candlestick Park (24-19) | 42-42 | |
| » W: Manny Sarmiento (2-3) L: Fred Breining (6-6) S: Rod Scurry (3) | Fifth | 10 out |
| Tuesday, July 12 |
| » Lost to Pirates (38-43), 6-2 | Candlestick Park (24-20) | 42-43 | Lost 2 |
| » W: Lee Tunnell (3-3) L: Bill Laskey (10-8) S: Cecilio Guante (2) | Fifth | 9½ out |
| Wednesday, July 13 |
| » Lost to Pirates (39-43), 7-6 | Candlestick Park (24-21) | 42-44 | Lost 3 |
| » W: Manny Sarmiento (3-3) L: Greg Minton (2-6) S: Kent Tekulve (8) | Fifth | 10½ out |
| Thursday, July 14 |
| » Lost to Cardinals (44-42), 6-5 | Candlestick Park (24-22) | 42-45 | Lost 4 |
| » W: Dave LaPoint (7-6) L: Gary Lavelle (6-3) S: Bruce Sutter (10) | Fourth | 11½ out |
| Friday, July 15 |
| » Defeated Cardinals (44-43), 5-4 | Candlestick Park (25-22) | 43-45 | |
| » W: Jim Barr (1-1) L: Joaquin Andujar (4-12) S: Greg Minton (9) | Fifth | 11½ out |
| Saturday, July 16 |
| » Lost to Cardinals (45-43), 9-3 | Candlestick Park (25-23) | 43-46 | |
| » W: Jeff Lahti (2-1) L: Fred Breining (6-7) S: Dave VonOhlen (1) | Fifth | 12½ out |
| Sunday, July 17 |
| » Defeated Cardinals (45-44), 3-1 | Candlestick Park (26-23) | 44-46 | |
| » W: Bill Laskey (11-8) L: John Stuper (7-6) | Fifth | 11½ out |
| Tuesday, July 19 |
| » Defeated Cubs (41-50), 4-3 | Wrigley Field (2-2) | 45-46 | Won 2 |
| » W: Greg Minton (3-6) L: Bill Campbell (2-6) | Fifth | 12 out |
| Former Giant Joe Beggs dies in Indianapolis, IN at the age of 73. |
| Wednesday, July 20 |
| » Defeated Cubs (41-51), 4-3 | Wrigley Field (3-2) | 46-46 | Won 3 |
| » W: Greg Minton (4-6) L: Lee Smith (3-5) | Fifth | 11 out |
| Thursday, July 21 |
| » Lost to Cubs (42-51), 3-2 | Wrigley Field (3-3) | 46-47 | |
| » W: Dick Ruthven (7-7) L: Atlee Hammaker (10-5) S: Lee Smith (13) | Fifth | 11 out |
| Friday, July 22 |
| » Defeated Pirates (46-45), 5-3 | Three Rivers Stadium (2-1) | 47-47 | |
| » W: Jim Barr (2-1) L: Rod Scurry (2-6) S: Greg Minton (10) | Fifth | 11 out |
| Saturday, July 23 |
| » Lost to Pirates (47-45), 5-2 | Three Rivers Stadium (2-2) | 47-48 | |
| » W: Jose DeLeon (1-0) L: Renie Martin (1-1) S: Rod Scurry (5) | Fifth | 12 out |
| » Major-league debuts: Jose DeLeon (Pirates) |
| Sunday, July 24 |
| » Lost to Pirates (48-45), 3-1 | Three Rivers Stadium (2-3) | 47-49 | Lost 2 |
| » W: Rod Scurry (3-6) L: Mike Krukow (5-6) S: Kent Tekulve (11) | Fifth | 12½ out |
| » Defeated Pirates (48-46), 8-5 | Three Rivers Stadium (3-3) | 48-49 | |
| » W: Greg Minton (5-6) L: Rod Scurry (3-7) S: Andy McGaffigan (1) | Fifth | 12½ out |
| Monday, July 25 |
| » Lost to Cardinals (48-48), 9-4 | Busch Stadium II (1-3) | 48-50 | |
| » W: Dave LaPoint (8-6) L: Andy McGaffigan (2-8) | Fifth | 12½ out |
| Tuesday, July 26 |
| » Lost to Cardinals (49-48), 6-5 | Busch Stadium II (1-4) | 48-51 | Lost 2 |
| » W: Dave Rucker (3-3) L: Greg Minton (5-7) | Fifth | 12½ out |
| Wednesday, July 27 |
| » Lost to Cardinals (50-48), 7-6 | Busch Stadium II (1-5) | 48-52 | Lost 3 |
| » W: Dave VonOhlen (3-2) L: Jim Barr (2-2) S: Bruce Sutter (11) | Fifth | 13½ out |
| Friday, July 29 |
| » Defeated Dodgers (56-43), 5-2 | Candlestick Park (27-23) | 49-52 | |
| » W: Mike Krukow (6-6) L: Alejandro Pena (8-5) S: Greg Minton (11) | Fifth | 13 out |
| Saturday, July 30 |
| » Defeated Dodgers (56-44), 8-0 | Candlestick Park (28-23) | 50-52 | Won 2 |
| » W: Mark Davis (1-3) L: Jerry Reuss (6-10) | Fourth | 13 out |
| Sunday, July 31 |
| » Lost to Dodgers (57-44), 2-1 | Candlestick Park (28-24) | 50-53 | |
| » W: Tom Niedenfuer (5-0) L: Fred Breining (6-8) S: Steve Howe (11) | Fifth | 12½ out |
| » Defeated Dodgers (57-45), 8-6 | Candlestick Park (29-24) | 51-53 | |
| » W: Jim Barr (3-2) L: Fernando Valenzuela (10-6) S: Greg Minton (12) | Fifth | 12½ out |
| Monday, August 1 |
| » Lost to Braves (65-41), 8-3 | Candlestick Park (29-25) | 51-54 | |
| » W: Rick Camp (9-8) L: Andy McGaffigan (2-9) | Fifth | 13½ out |
| Tuesday, August 2 |
| » Defeated Braves (65-42), 7-3 | Candlestick Park (30-25) | 52-54 | |
| » W: Mike Krukow (7-6) L: Pascual Perez (12-3) S: Greg Minton (13) | Fifth | 12½ out |
| Wednesday, August 3 |
| » Lost to Braves (66-42), 6-4 | Candlestick Park (30-26) | 52-55 | |
| » W: Steve Bedrosian (7-4) L: Jim Barr (3-3) | Fifth | 13½ out |
| Thursday, August 4 |
| » Lost to Braves (67-42), 8-1 | Candlestick Park (30-27) | 52-56 | Lost 2 |
| » W: Phil Niekro (7-6) L: Fred Breining (6-9) | Fifth | 14½ out |
| Friday, August 5 |
| » Defeated Astros (54-53), 7-1 | Candlestick Park (31-27) | 53-56 | |
| » W: Bill Laskey (12-8) L: Bob Knepper (4-11) | Fifth | 13½ out |
| Saturday, August 6 |
| » Lost to Astros (55-53), 4-2 | Candlestick Park (31-28) | 53-57 | |
| » W: Mike Madden (5-0) L: Renie Martin (1-2) S: Bill Dawley (9) | Fifth | 13½ out |
| Former Giant Johnny Tobin dies in Rhinebeck, NY at the age of 77. |
| Sunday, August 7 |
| » Lost to Astros (56-53), 2-1 | Candlestick Park (31-29) | 53-58 | Lost 2 |
| » W: Nolan Ryan (11-5) L: Greg Minton (5-8) | Fifth | 14½ out |
| Tuesday, August 9 |
| » Lost to Braves (69-44), 7-2 | Atlanta-Fulton County Stadium (2-3) | 53-59 | Lost 3 |
| » W: Phil Niekro (8-6) L: Mark Calvert (0-3) | Fifth | 15½ out |
| Wednesday, August 10 |
| » Defeated Braves (69-45), 7-4 | Atlanta-Fulton County Stadium (3-3) | 54-59 | |
| » W: Greg Minton (6-8) L: Steve Bedrosian (7-5) S: Gary Lavelle (13) | Fifth | 14½ out |
| Thursday, August 11 |
| » Lost to Braves (70-45), 6-4 | Atlanta-Fulton County Stadium (3-4) | 54-60 | |
| » W: Ken Dayley (3-3) L: Bill Laskey (12-9) S: Gene Garber (7) | Fifth | 15½ out |
| » Major-league debuts: Gerald Perry (Braves) |
| Friday, August 12 |
| » Lost to Astros (59-54), 5-2 | Astrodome (0-4) | 54-61 | Lost 2 |
| » W: Nolan Ryan (12-5) L: Renie Martin (1-3) S: Frank DiPino (11) | Fifth | 15½ out |
| Saturday, August 13 |
| » Lost to Astros (60-54), 4-1 | Astrodome (0-5) | 54-62 | Lost 3 |
| » W: Joe Niekro (10-10) L: Mike Krukow (7-7) S: Bill Dawley (10) | Fifth | 16½ out |
| Sunday, August 14 |
| » Defeated Astros (60-55), 5-2 | Astrodome (1-5) | 55-62 | |
| » W: Mark Davis (2-3) L: Mike Madden (5-1) S: Gary Lavelle (14) | Fifth | 15½ out |
| Monday, August 15 |
| » Defeated Dodgers (64-52), 7-3 | Dodger Stadium (4-1) | 56-62 | Won 2 |
| » W: Fred Breining (7-9) L: Burt Hooton (8-7) | Fifth | 14½ out |
| Tuesday, August 16 |
| » Lost to Dodgers (65-52), 5-1 | Dodger Stadium (4-2) | 56-63 | |
| » W: Jerry Reuss (7-10) L: Bill Laskey (12-10) | Fifth | 14½ out |
| Wednesday, August 17 |
| » Lost to Expos (60-57), 12-5 | Candlestick Park (31-30) | 56-64 | Lost 2 |
| » W: Steve Rogers (15-7) L: Renie Martin (1-4) | Fifth | 15 out |
| Thursday, August 18 |
| » Defeated Expos (60-58), 5-3 | Candlestick Park (32-30) | 57-64 | |
| » W: Mike Krukow (8-7) L: Bryn Smith (3-6) S: Greg Minton (14) | Fifth | 14 out |
| Friday, August 19 |
| » Lost to Mets (49-71), 7-6 | Candlestick Park (32-31) | 57-65 | |
| » W: Jesse Orosco (11-5) L: Greg Minton (6-9) | Fifth | 15 out |
| Saturday, August 20 |
| » Lost to Mets (50-71), 7-2 | Candlestick Park (32-32) | 57-66 | Lost 2 |
| » W: Ed Lynch (9-7) L: Fred Breining (7-10) | Fifth | 16 out |
| Sunday, August 21 |
| » Lost to Mets (51-71), 4-3 | Candlestick Park (32-33) | 57-67 | Lost 3 |
| » W: Mike Torrez (7-14) L: Atlee Hammaker (10-6) S: Jesse Orosco (14) | Fifth | 17 out |
| Monday, August 22 |
| » Defeated Phillies (63-58), 11-5 | Candlestick Park (33-33) | 58-67 | |
| » W: Bill Laskey (13-10) L: Charles Hudson (7-6) S: Gary Lavelle (15) | Fifth | 16½ out |
| Tuesday, August 23 |
| » Defeated Phillies (63-59), 3-1 | Candlestick Park (34-33) | 59-67 | Won 2 |
| » W: Mike Krukow (9-7) L: Al Holland (7-2) S: Greg Minton (15) | Fifth | 15½ out |
| Wednesday, August 24 |
| » Defeated Phillies (63-60), 5-3 | Candlestick Park (35-33) | 60-67 | Won 3 |
| » W: Renie Martin (2-4) L: Steve Carlton (12-13) | Fifth | 15½ out |
| » Major-league debuts: Juan Samuel (Phillies) |
| Friday, August 26 |
| » Defeated Mets (52-74), 12-1 | Shea Stadium (3-1) | 61-67 | Won 4 |
| » W: Fred Breining (8-10) L: Ed Lynch (9-8) | Fifth | 14 out |
| Saturday, August 27 |
| » Lost to Mets (53-74), 6-3 | Shea Stadium (3-2) | 61-68 | |
| » W: Mike Torrez (8-14) L: Atlee Hammaker (10-7) S: Jesse Orosco (15) | Fifth | 14 out |
| Sunday, August 28 |
| » Defeated Mets (53-75), 7-2 | Shea Stadium (4-2) | 62-68 | |
| » W: Jim Barr (4-3) L: Craig Swan (2-8) S: Gary Lavelle (16) | Fifth | 14 out |
| Monday, August 29 |
| » Lost to Expos (65-63), 5-0 | Stade Olympique (1-3) | 62-69 | |
| » W: Bryn Smith (4-7) L: Mike Krukow (9-8) | Fifth | 15 out |
| Tuesday, August 30 |
| » Defeated Expos (65-64), 13-2 | Stade Olympique (2-3) | 63-69 | |
| » W: Mark Davis (3-3) L: Ray Burris (4-6) S: Greg Minton (16) | Fifth | 14½ out |
| Wednesday, August 31 |
| » Lost to Expos (66-64), 4-3 | Stade Olympique (2-4) | 63-70 | |
| » W: Bill Gullickson (13-11) L: Fred Breining (8-11) S: Jeff Reardon (19) | Fifth | 14½ out |
| Thursday, September 1 |
| » Lost to Phillies (68-64), 4-2 | Veteran's Stadium (1-2) | 63-71 | Lost 2 |
| » W: Tony Ghelfi (1-0) L: Atlee Hammaker (10-8) S: Al Holland (17) | Fifth | 14½ out |
| Friday, September 2 |
| » Lost to Phillies (69-64), 5-3 | Veteran's Stadium (1-3) | 63-72 | Lost 3 |
| » W: Ron Reed (6-1) L: Gary Lavelle (6-4) | Fifth | 15½ out |
| Saturday, September 3 |
| » Defeated Phillies (69-65), 5-4 | Veteran's Stadium (2-3) | 64-72 | |
| » W: Mike Krukow (10-8) L: Steve Carlton (12-15) S: Greg Minton (17) | Fifth | 15½ out |
| Sunday, September 4 |
| » Defeated Phillies (69-66), 10-4 | Veteran's Stadium (3-3) | 65-72 | Won 2 |
| » W: Andy McGaffigan (3-9) L: Kevin Gross (4-5) S: Greg Minton (18) | Fifth | 14½ out |
| Monday, September 5 |
| » Defeated Reds (63-76), 3-2 | Candlestick Park (36-33) | 66-72 | Won 3 |
| » W: Fred Breining (9-11) L: Jeff Russell (2-2) S: Greg Minton (19) | Fifth | 13½ out |
| » Major-league debuts: Dan Gladden (Giants) |
| Tuesday, September 6 |
| » Lost to Reds (64-76), 11-1 | Candlestick Park (36-34) | 66-73 | |
| » W: Bruce Berenyi (7-14) L: Atlee Hammaker (10-9) S: Rich Gale (1) | Fifth | 13½ out |
| » Major-league debuts: Skeeter Barnes (Reds) |
| Wednesday, September 7 |
| » Defeated Braves (78-61), 2-1 | Candlestick Park (37-34) | 67-73 | |
| » W: Scott Garrelts (1-0) L: Pascual Perez (13-7) S: Gary Lavelle (17) | Fifth | 13½ out |
| Thursday, September 8 |
| » Lost to Braves (79-61), 12-9 | Candlestick Park (37-35) | 67-74 | |
| » W: Gene Garber (3-4) L: Greg Minton (6-10) | Fifth | 14½ out |
| Friday, September 9 |
| » Lost to Astros (74-66), 7-4 | Candlestick Park (37-36) | 67-75 | Lost 2 |
| » W: Joe Niekro (13-12) L: Mark Davis (3-4) S: Frank DiPino (16) | Fifth | 15½ out |
| Saturday, September 10 |
| » Lost to Astros (75-66), 5-3 | Candlestick Park (37-37) | 67-76 | Lost 3 |
| » W: Jeff Heathcock (1-0) L: Fred Breining (9-12) | Fifth | 15½ out |
| Sunday, September 11 |
| » Defeated Astros (75-67), 3-2 | Candlestick Park (38-37) | 68-76 | |
| » W: Greg Minton (7-10) L: Nolan Ryan (13-7) | Fifth | 15½ out |
| Tuesday, September 13 |
| » Lost to Padres (72-73), 4-3 | San Diego/Jack Murphy Stadium (2-6) | 68-77 | |
| » W: Sid Monge (8-2) L: Greg Minton (7-11) | Fifth | 16½ out |
| Wednesday, September 14 |
| » Lost to Padres (73-73), 7-4 | San Diego/Jack Murphy Stadium (2-7) | 68-78 | Lost 2 |
| » W: Eric Show (14-10) L: Mike Krukow (10-9) S: Gary Lucas (15) | Fifth | 16½ out |
| Friday, September 16 |
| » Defeated Dodgers (85-62), 1-0 | Candlestick Park (39-37) | 69-78 | |
| » W: Mark Davis (4-4) L: Fernando Valenzuela (13-10) | Fifth | 16 out |
| Saturday, September 17 |
| » Defeated Dodgers (85-63), 4-1 | Candlestick Park (40-37) | 70-78 | Won 2 |
| » W: Fred Breining (10-12) L: Rick Honeycutt (16-11) | Fifth | 15 out |
| Sunday, September 18 |
| » Defeated Dodgers (85-64), 6-3 | Candlestick Park (41-37) | 71-78 | Won 3 |
| » W: Mike Krukow (11-9) L: Jerry Reuss (11-11) S: Gary Lavelle (18) | Fifth | 14 out |
| Monday, September 19 |
| » Lost to Padres (76-74), 4-2 | Candlestick Park (41-38) | 71-79 | |
| » W: Ed Whitson (5-7) L: Scott Garrelts (1-1) S: Floyd Chiffer (1) | Fifth | 15 out |
| Tuesday, September 20 |
| » Defeated Padres (76-75), 8-1 | Candlestick Park (42-38) | 72-79 | |
| » W: Mark Calvert (1-3) L: Eric Show (14-11) S: Andy McGaffigan (2) | Fifth | 14 out |
| Wednesday, September 21 |
| » Defeated Padres (76-76), 5-4 | Candlestick Park (43-38) | 73-79 | Won 2 |
| » W: Gary Lavelle (7-4) L: Gary Lucas (5-8) | Fifth | 14 out |
| Friday, September 23 |
| » Defeated Astros (79-73), 3-2 | Astrodome (2-5) | 74-79 | Won 3 |
| » W: Fred Breining (11-12) L: Joe Niekr |