| Saturday, January 5 |
| Future Giant Damon Minor is born in Canton, OH. |
| Monday, January 21 |
| Former Giant Claude Cooper dies in Plainview, TX at the age of 82. |
| Friday, March 1 |
| Former Giant Larry Doyle dies in Saranac Lake, NY at the age of 88. |
| Saturday, March 9 |
| Future Giant Francisco Santos is born in Santo Domingo, D.R. |
| Thursday, April 4 |
| » Major-league debuts: Jim Sundberg (Rangers) |
| Friday, April 5 |
| » Defeated Astros (0-1), 5-1 | Candlestick Park (1-0) | 1-0 | |
| » W: Tom Bradley (1-0) L: Dave Roberts (0-1) | First | -- |
| Former Giant Fred Snodgrass dies in Ventura, CA at the age of 87. |
| Saturday, April 6 |
| » Defeated Astros (0-2), 3-2 | Candlestick Park (2-0) | 2-0 | Won 2 |
| » W: Mike Caldwell (1-0) L: Tom Griffin (0-1) S: Randy Moffitt (1) | First | -- |
| » Major-league debuts: Larry Milbourne (Astros) |
| Sunday, April 7 |
| » Defeated Astros (0-3), 8-4 | Candlestick Park (3-0) | 3-0 | Won 3 |
| » W: Jim Willoughby (1-0) L: Claude Osteen (0-1) S: Jim Barr (1) | First | -- |
| Monday, April 8 |
| » Defeated Reds (2-2), 4-3 | Candlestick Park (4-0) | 4-0 | Won 4 |
| » W: John D'Acquisto (1-0) L: Roger Nelson (0-1) S: Randy Moffitt (2) | First | -- |
| Tuesday, April 9 |
| » Lost to Reds (3-2), 6-3 | Candlestick Park (4-1) | 4-1 | |
| » W: Jack Billingham (1-0) L: Tom Bradley (1-1) S: Pedro Borbon (1) | First | -- |
| Wednesday, April 10 |
| » Defeated Reds (3-3), 4-3 | Candlestick Park (5-1) | 5-1 | |
| » W: Mike Caldwell (2-0) L: Don Gullett (0-1) | First | -- |
| Friday, April 12 |
| » Lost to Padres (1-6), 3-2 | San Diego/Jack Murphy Stadium (0-1) | 5-2 | |
| » W: Steve Arlin (1-1) L: Jim Willoughby (1-1) S: Vicente Romo (1) | First | -- |
| Saturday, April 13 |
| » Defeated Padres (1-7), 3-2 | San Diego/Jack Murphy Stadium (1-1) | 6-2 | |
| » W: John D'Acquisto (2-0) L: Jim McAndrew (0-2) S: Randy Moffitt (3) | First | -- |
| Sunday, April 14 |
| » Lost to Padres (2-7), 6-5 | San Diego/Jack Murphy Stadium (1-2) | 6-3 | |
| » W: Rich Troedson (1-0) L: Jim Barr (0-1) S: Vicente Romo (2) | Second | ½ out |
| Monday, April 15 |
| » Lost to Astros (5-5), 3-1 | Astrodome (0-1) | 6-4 | Lost 2 |
| » W: Larry Dierker (2-0) L: Mike Caldwell (2-1) | Second | 1 out |
| Tuesday, April 16 |
| » Lost to Astros (6-5), 4-0 | Astrodome (0-2) | 6-5 | Lost 3 |
| » W: Tom Griffin (2-1) L: Jim Willoughby (1-2) | Second | 2 out |
| Wednesday, April 17 |
| » Lost to Astros (7-5), 3-2 | Astrodome (0-3) | 6-6 | Lost 4 |
| » W: Claude Osteen (2-1) L: John D'Acquisto (2-1) S: Ken Forsch (2) | Third | 3 out |
| Thursday, April 18 |
| » Defeated Astros (7-6), 5-2 | Astrodome (1-3) | 7-6 | |
| » W: Tom Bradley (2-1) L: Doug Konieczny (0-1) | Second | 2½ out |
| Friday, April 19 |
| » Defeated Dodgers (9-4), 5-4 | Dodger Stadium (1-0) | 8-6 | Won 2 |
| » W: Mike Caldwell (3-1) L: Don Sutton (3-1) S: Randy Moffitt (4) | Second | 1½ out |
| Saturday, April 20 |
| » Lost to Dodgers (10-4), 4-2 | Dodger Stadium (1-1) | 8-7 | |
| » W: Tommy John (4-0) L: Jim Willoughby (1-3) | Second | 2½ out |
| Sunday, April 21 |
| » Defeated Dodgers (10-5), 6-4 | Dodger Stadium (2-1) | 9-7 | |
| » W: Randy Moffitt (1-0) L: Mike Marshall (0-1) | Second | 1½ out |
| Tuesday, April 23 |
| » Lost to Expos (9-2), 8-4 | Candlestick Park (5-2) | 9-8 | |
| » W: Mike Torrez (3-0) L: Tom Bradley (2-2) S: Tom Walker (1) | Fourth | 2½ out |
| Thursday, April 25 |
| » Defeated Expos (9-3), 8-2 | Candlestick Park (6-2) | 10-8 | |
| » W: Mike Caldwell (4-1) L: Ernie McAnally (1-2) | Fourth | 3 out |
| Friday, April 26 |
| » Lost to Mets (5-11), 6-0 | Candlestick Park (6-3) | 10-9 | |
| » W: Tom Seaver (1-2) L: Ron Bryant (0-1) | Fourth | 4 out |
| Saturday, April 27 |
| » Defeated Mets (5-12), 11-3 | Candlestick Park (7-3) | 11-9 | |
| » W: Elias Sosa (1-0) L: Craig Swan (0-2) | Fourth | 4 out |
| Sunday, April 28 |
| » Lost to Mets (6-12), 6-0 | Candlestick Park (7-4) | 11-10 | |
| » W: Jon Matlack (2-1) L: Tom Bradley (2-3) | Fourth | 5½ out |
| » Lost to Mets (7-12), 6-4 | Candlestick Park (7-5) | 11-11 | Lost 2 |
| » W: Harry Parker (1-0) L: Randy Moffitt (1-1) S: Bob Miller (1) | Fourth | 5½ out |
| Tuesday, April 30 |
| » Lost to Phillies (10-11), 6-5 | Candlestick Park (7-6) | 11-12 | Lost 3 |
| » W: Frank Linzy (2-2) L: Randy Moffitt (1-2) S: Eddie Watt (2) | Fourth | 6 out |
| Wednesday, May 1 |
| » Defeated Phillies (10-12), 13-8 | Candlestick Park (8-6) | 12-12 | |
| » W: Charlie Williams (1-0) L: Steve Carlton (2-2) | Fourth | 6 out |
| Saturday, May 4 |
| » Lost to Expos (10-8), 4-2 | Parc Jarry (0-1) | 12-13 | |
| » W: Steve Rogers (4-1) L: John D'Acquisto (2-2) | Fourth | 5½ out |
| Sunday, May 5 |
| » Defeated Expos (10-9), 4-0 | Parc Jarry (1-1) | 13-13 | |
| » W: Mike Caldwell (5-1) L: Steve Renko (1-4) | Fourth | 4 out |
| » Defeated Expos (10-10), 8-1 | Parc Jarry (2-1) | 14-13 | Won 2 |
| » W: Tom Bradley (3-3) L: Mike Torrez (3-2) | Fourth | 4 out |
| Tuesday, May 7 |
| » Defeated Mets (10-16), 4-3 | Shea Stadium (1-0) | 15-13 | Won 3 |
| » W: Elias Sosa (2-0) L: Tom Seaver (1-3) | Third | 3 out |
| » Defeated Mets (10-17), 3-0 | Shea Stadium (2-0) | 16-13 | Won 4 |
| » W: Jim Barr (1-1) L: George Stone (0-3) S: Randy Moffitt (5) | Third | 3 out |
| Wednesday, May 8 |
| » Lost to Mets (11-17), 4-2 | Shea Stadium (2-1) | 16-14 | |
| » W: Jon Matlack (4-1) L: John D'Acquisto (2-3) | Third | 4 out |
| Friday, May 10 |
| » Defeated Braves (13-17), 5-4 | Atlanta-Fulton County Stadium (1-0) | 17-14 | |
| » W: Elias Sosa (3-0) L: Buzz Capra (0-2) | Third | 4½ out |
| Saturday, May 11 |
| » Defeated Braves (13-18), 8-7 | Atlanta-Fulton County Stadium (2-0) | 18-14 | Won 2 |
| » W: Tom Bradley (4-3) L: Ron Reed (5-3) S: Randy Moffitt (6) | Third | 4½ out |
| Sunday, May 12 |
| » Lost to Braves (14-18), 5-1 | Atlanta-Fulton County Stadium (2-1) | 18-15 | |
| » W: Carl Morton (4-3) L: Ron Bryant (0-2) | Third | 5 out |
| » Defeated Braves (14-19), 6-2 | Atlanta-Fulton County Stadium (3-1) | 19-15 | |
| » W: Randy Moffitt (2-2) L: Danny Frisella (0-2) | Third | 5 out |
| Monday, May 13 |
| » Lost to Reds (16-14), 4-1 | Riverfront Stadium (0-1) | 19-16 | |
| » W: Don Gullett (3-3) L: John D'Acquisto (2-4) S: Pedro Borbon (6) | Third | 6 out |
| Tuesday, May 14 |
| » Defeated Reds (16-15), 4-0 | Riverfront Stadium (1-1) | 20-16 | |
| » W: Mike Caldwell (6-1) L: Jack Billingham (5-2) | Second | 6 out |
| Wednesday, May 15 |
| » Lost to Reds (17-15), 4-3 | Riverfront Stadium (1-2) | 20-17 | |
| » W: Roger Nelson (2-3) L: Tom Bradley (4-4) S: Pedro Borbon (7) | Second | 7½ out |
| Friday, May 17 |
| » Lost to Padres (15-25), 7-3 | Candlestick Park (8-7) | 20-18 | Lost 2 |
| » W: Randy Jones (3-6) L: Ron Bryant (0-3) S: Vicente Romo (5) | Third | 7½ out |
| Saturday, May 18 |
| » Defeated Padres (15-26), 4-2 | Candlestick Park (9-7) | 21-18 | |
| » W: Elias Sosa (4-0) L: Steve Arlin (1-5) S: Randy Moffitt (7) | Third | 7½ out |
| Sunday, May 19 |
| » Defeated Padres (15-27), 8-2 | Candlestick Park (10-7) | 22-18 | Won 2 |
| » W: Mike Caldwell (7-1) L: Bill Greif (2-7) | Third | 7 out |
| » Lost to Padres (16-27), 10-7 | Candlestick Park (10-8) | 22-19 | |
| » W: Larry Hardy (3-1) L: Jim Willoughby (1-4) | Third | 7 out |
| Tuesday, May 21 |
| » Lost to Braves (21-20), 4-1 | Candlestick Park (10-9) | 22-20 | Lost 2 |
| » W: Carl Morton (6-3) L: John D'Acquisto (2-5) | Third | 8 out |
| » Defeated Braves (21-21), 5-4 | Candlestick Park (11-9) | 23-20 | |
| » W: Ron Bryant (1-3) L: Roric Harrison (3-6) S: Randy Moffitt (8) | Third | 8 out |
| Wednesday, May 22 |
| » Lost to Braves (22-21), 6-2 | Candlestick Park (11-10) | 23-21 | |
| » W: Phil Niekro (5-3) L: Jim Barr (1-2) | Third | 9 out |
| Thursday, May 23 |
| » Defeated Dodgers (31-12), 7-6 | Candlestick Park (12-10) | 24-21 | |
| » W: Elias Sosa (5-0) L: Mike Marshall (2-2) S: Randy Moffitt (9) | Second | 8 out |
| Friday, May 24 |
| » Defeated Dodgers (31-13), 9-7 | Candlestick Park (13-10) | 25-21 | Won 2 |
| » W: Tom Bradley (5-4) L: Don Sutton (6-4) S: Randy Moffitt (10) | Second | 7 out |
| Saturday, May 25 |
| » Lost to Dodgers (32-13), 9-5 | Candlestick Park (13-11) | 25-22 | |
| » W: Tommy John (7-1) L: Ron Bryant (1-4) | Third | 8 out |
| Sunday, May 26 |
| » Lost to Dodgers (33-13), 9-5 | Candlestick Park (13-12) | 25-23 | Lost 2 |
| » W: Doug Rau (4-1) L: Jim Barr (1-3) S: Mike Marshall (6) | Third | 9 out |
| Monday, May 27 |
| » Lost to Cubs (17-23), 12-4 | Wrigley Field (0-1) | 25-24 | Lost 3 |
| » W: Ken Frailing (3-4) L: Mike Caldwell (7-2) | Fourth | 9 out |
| Wednesday, May 29 |
| » Defeated Cubs (17-24), 5-4 | Wrigley Field (1-1) | 26-24 | |
| » W: John D'Acquisto (3-5) L: Rick Reuschel (3-4) S: Randy Moffitt (11) | Fourth | 9½ out |
| Thursday, May 30 |
| » Lost to Cubs (18-24), 5-3 | Wrigley Field (1-2) | 26-25 | |
| » W: Bill Bonham (4-8) L: Elias Sosa (5-1) | Fifth | 10 out |
| Friday, May 31 |
| » Defeated Phillies (25-23), 6-2 | Veteran's Stadium (1-0) | 27-25 | |
| » W: Ron Bryant (2-4) L: Ron Schueler (3-5) S: Randy Moffitt (12) | Fifth | 10 out |
| Saturday, June 1 |
| » Lost to Phillies (26-23), 6-2 | Veteran's Stadium (1-1) | 27-26 | |
| » W: Jim Lonborg (5-5) L: Mike Caldwell (7-3) | Fifth | 11 out |
| Sunday, June 2 |
| » Lost to Phillies (27-23), 4-3 | Veteran's Stadium (1-2) | 27-27 | Lost 2 |
| » W: Frank Linzy (3-2) L: Randy Moffitt (2-3) | Fifth | 11 out |
| Tuesday, June 4 |
| » Defeated Cardinals (26-23), 5-3 | Candlestick Park (14-12) | 28-27 | |
| » W: Tom Bradley (6-4) L: Bob Gibson (3-6) S: Elias Sosa (1) | Fourth | 11 out |
| Wednesday, June 5 |
| » Lost to Cardinals (27-23), 4-1 | Candlestick Park (14-13) | 28-28 | |
| » W: Sonny Siebert (6-3) L: Ron Bryant (2-5) S: Orlando Pena (1) | Fifth | 12 out |
| Future Giant Russ Ortiz is born in Encino, CA. |
| Thursday, June 6 |
| » Defeated Cardinals (27-24), 9-5 | Candlestick Park (15-13) | 29-28 | |
| » W: Jim Barr (2-3) L: Lynn McGlothen (7-3) S: Elias Sosa (2) | Fourth | 12 out |
| Friday, June 7 |
| » Defeated Pirates (18-32), 6-2 | Candlestick Park (16-13) | 30-28 | Won 2 |
| » W: John D'Acquisto (4-5) L: Larry Demery (0-1) | Fifth | 12 out |
| Saturday, June 8 |
| » Lost to Pirates (19-32), 5-2 | Candlestick Park (16-14) | 30-29 | |
| » W: Dock Ellis (2-5) L: Tom Bradley (6-5) S: Bruce Kison (2) | Fifth | 12 out |
| Sunday, June 9 |
| » Lost to Pirates (20-32), 14-1 | Candlestick Park (16-15) | 30-30 | Lost 2 |
| » W: Jerry Reuss (5-4) L: Ron Bryant (2-6) | Fifth | 13 out |
| Monday, June 10 |
| » Major-league debuts: Ed Ott (Pirates) |
| Tuesday, June 11 |
| » Lost to Cubs (22-30), 7-4 | Candlestick Park (16-16) | 30-31 | Lost 3 |
| » W: Ken Frailing (5-5) L: John D'Acquisto (4-6) S: Horacio Pina (3) | Fifth | 12½ out |
| Wednesday, June 12 |
| » Lost to Cubs (23-30), 10-1 | Candlestick Park (16-17) | 30-32 | Lost 4 |
| » W: Rick Reuschel (5-4) L: Tom Bradley (6-6) | Fifth | 12½ out |
| Thursday, June 13 |
| » Defeated Cubs (23-31), 1-0 | Candlestick Park (17-17) | 31-32 | |
| » W: Jim Barr (3-3) L: Bill Bonham (4-9) | Fifth | 12 out |
| Friday, June 14 |
| » Lost to Pirates (22-34), 4-2 | Three Rivers Stadium (0-1) | 31-33 | |
| » W: Dock Ellis (3-5) L: Ron Bryant (2-7) | Fifth | 13 out |
| Saturday, June 15 |
| » Lost to Pirates (23-34), 3-2 | Three Rivers Stadium (0-2) | 31-34 | Lost 2 |
| » W: Daryl Patterson (1-0) L: Elias Sosa (5-2) | Fifth | 13 out |
| Sunday, June 16 |
| » Lost to Pirates (24-34), 4-3 | Three Rivers Stadium (0-3) | 31-35 | Lost 3 |
| » W: Jim Rooker (3-5) L: Tom Bradley (6-7) | Fifth | 14 out |
| Monday, June 17 |
| » Defeated Cardinals (31-30), 3-0 | Busch Stadium II (1-0) | 32-35 | |
| » W: Jim Barr (4-3) L: Jack Curtis (4-7) | Fifth | 13 out |
| Tuesday, June 18 |
| » Lost to Cardinals (32-30), 3-0 | Busch Stadium II (1-1) | 32-36 | |
| » W: Alan Foster (2-5) L: Ron Bryant (2-8) | Fifth | 13 out |
| Wednesday, June 19 |
| » Defeated Cardinals (32-31), 5-4 | Busch Stadium II (2-1) | 33-36 | |
| » W: John D'Acquisto (5-6) L: Bob Gibson (3-8) S: Steve Barber (1) | Fifth | 12 out |
| Friday, June 21 |
| » Lost to Dodgers (45-23), 4-3 | Dodger Stadium (2-2) | 33-37 | |
| » W: Mike Marshall (5-3) L: Elias Sosa (5-3) | Fifth | 13 out |
| Saturday, June 22 |
| » Lost to Dodgers (46-23), 3-2 | Dodger Stadium (2-3) | 33-38 | Lost 2 |
| » W: Mike Marshall (6-3) L: Elias Sosa (5-4) | Fifth | 14 out |
| Sunday, June 23 |
| » Lost to Dodgers (47-23), 4-3 | Dodger Stadium (2-4) | 33-39 | Lost 3 |
| » W: Mike Marshall (7-3) L: Steve Barber (0-1) | Fifth | 15 out |
| Monday, June 24 |
| » Lost to Padres (31-44), 2-1 | San Diego/Jack Murphy Stadium (1-3) | 33-40 | Lost 4 |
| » W: Dan Spillner (4-1) L: Ron Bryant (2-9) S: Vicente Romo (8) | Fifth | 15 out |
| Tuesday, June 25 |
| » Lost to Padres (32-44), 3-1 | San Diego/Jack Murphy Stadium (1-4) | 33-41 | Lost 5 |
| » W: Lowell Palmer (1-0) L: Charlie Williams (1-1) | Fifth | 16 out |
| Wednesday, June 26 |
| » Lost to Padres (33-44), 4-0 | San Diego/Jack Murphy Stadium (1-5) | 33-42 | Lost 6 |
| » W: Bill Greif (3-10) L: Jim Barr (4-4) | Fifth | 17 out |
| Thursday, June 27 |
| » Defeated Padres (33-45), 4-2 | San Diego/Jack Murphy Stadium (2-5) | 34-42 | |
| » W: John D'Acquisto (6-6) L: Randy Jones (4-12) | Fifth | 16½ out |
| Friday, June 28 |
| » Lost to Dodgers (50-24), 11-3 | Candlestick Park (17-18) | 34-43 | |
| » Manager: Wes Westrum |
| » W: Tommy John (11-2) L: Ron Bryant (2-10) S: Mike Marshall (10) | Fifth | 17½ out |
| Saturday, June 29 |
| » Lost to Dodgers (51-24), 6-4 | Candlestick Park (17-19) | 34-44 | Lost 2 |
| » W: Doug Rau (6-4) L: Charlie Williams (1-2) S: Charlie Hough (1) | Fifth | 18½ out |
| Sunday, June 30 |
| » Lost to Dodgers (52-24), 5-3 | Candlestick Park (17-20) | 34-45 | Lost 3 |
| » W: Andy Messersmith (8-2) L: Tom Bradley (6-8) | Fifth | 19½ out |
| Tuesday, July 2 |
| » Lost to Padres (36-47), 5-1 | Candlestick Park (17-21) | 34-46 | Lost 4 |
| » W: Randy Jones (5-12) L: John D'Acquisto (6-7) | Sixth | 20½ out |
| Wednesday, July 3 |
| » Defeated Padres (36-48), 3-2 | Candlestick Park (18-21) | 35-46 | |
| » W: Randy Moffitt (3-3) L: Vicente Romo (4-4) | Fifth | 20 out |
| Thursday, July 4 |
| » Defeated Padres (36-49), 9-2 | Candlestick Park (19-21) | 36-46 | Won 2 |
| » W: Tom Bradley (7-8) L: Dan Spillner (4-3) | Fifth | 20 out |
| Friday, July 5 |
| » Lost to Mets (34-45), 3-2 | Shea Stadium (2-2) | 36-47 | |
| » W: Jerry Koosman (9-5) L: Jim Barr (4-5) | Fifth | 20½ out |
| Saturday, July 6 |
| » Defeated Mets (34-46), 5-2 | Shea Stadium (3-2) | 37-47 | |
| » W: John D'Acquisto (7-7) L: George Stone (2-7) S: Randy Moffitt (13) | Fifth | 19½ out |
| Sunday, July 7 |
| » Lost to Mets (35-46), 6-0 | Shea Stadium (3-3) | 37-48 | |
| » W: Tom Seaver (6-6) L: Ron Bryant (2-11) S: Bob Apodaca (2) | Fifth | 21 out |
| Monday, July 8 |
| » Defeated Expos (39-41), 5-4 | Parc Jarry (3-1) | 38-48 | |
| » W: Randy Moffitt (4-3) L: Steve Rogers (10-9) | Fifth | 21 out |
| » Major-league debuts: Ed Halicki (Giants) |
| Tuesday, July 9 |
| » Lost to Expos (40-41), 5-4 | Parc Jarry (3-2) | 38-49 | |
| » W: Dennis Blair (3-2) L: Tom Bradley (7-9) S: John Montague (2) | Fifth | 22 out |
| Former Giant Leo Mangum dies in Lima, OH at the age of 79. |
| Wednesday, July 10 |
| » Defeated Expos (40-42), 4-2 | Parc Jarry (4-2) | 39-49 | |
| » W: Jim Barr (5-5) L: Steve Renko (6-9) | Fifth | 21 out |
| Friday, July 12 |
| » Lost to Phillies (44-42), 6-2 | Candlestick Park (19-22) | 39-50 | |
| » W: Dick Ruthven (4-7) L: Elias Sosa (5-5) | Fifth | 21 out |
| Saturday, July 13 |
| » Defeated Phillies (44-43), 13-3 | Candlestick Park (20-22) | 40-50 | |
| » W: Mike Caldwell (8-3) L: Jim Lonborg (11-8) | Fifth | 21 out |
| » Major-league debuts: Alan Bannister (Phillies) |
| Sunday, July 14 |
| » Lost to Phillies (45-43), 5-2 | Candlestick Park (20-23) | 40-51 | |
| » W: Steve Carlton (11-7) L: Ed Halicki (0-1) | Fifth | 21½ out |
| » Lost to Phillies (46-43), 7-4 | Candlestick Park (20-24) | 40-52 | Lost 2 |
| » W: Wayne Twitchell (4-2) L: Tom Bradley (7-10) | Fifth | 21½ out |
| Tuesday, July 16 |
| » Defeated Mets (38-50), 9-4 | Candlestick Park (21-24) | 41-52 | |
| » W: Jim Barr (6-5) L: Jerry Koosman (9-7) | Fifth | 20½ out |
| Wednesday, July 17 |
| » Defeated Mets (38-51), 6-2 | Candlestick Park (22-24) | 42-52 | Won 2 |
| » W: John D'Acquisto (8-7) L: Bob Apodaca (2-5) | Fifth | 19½ out |
| Friday, July 19 |
| » Defeated Expos (44-46), 6-2 | Candlestick Park (23-24) | 43-52 | Won 3 |
| » W: Mike Caldwell (9-3) L: Mike Torrez (9-6) S: Randy Moffitt (14) | Fifth | 20 out |
| Saturday, July 20 |
| » Lost to Expos (45-46), 3-2 | Candlestick Park (23-25) | 43-53 | |
| » W: Dennis Blair (5-2) L: Ed Halicki (0-2) | Fifth | 20 out |
| Sunday, July 21 |
| » Defeated Expos (45-47), 4-0 | Candlestick Park (24-25) | 44-53 | |
| » W: Jim Barr (7-5) L: Steve Renko (6-10) | Fifth | 18½ out |
| » Defeated Expos (45-48), 2-0 | Candlestick Park (25-25) | 45-53 | Won 2 |
| » W: John D'Acquisto (9-7) L: Steve Rogers (10-11) S: Elias Sosa (3) | Fifth | 18½ out |
| Thursday, July 25 |
| » Lost to Reds (59-40), 14-13 | Riverfront Stadium (1-3) | 45-54 | |
| » W: Jack Billingham (11-7) L: Randy Moffitt (4-4) | Fifth | 20½ out |
| » Lost to Reds (60-40), 5-0 | Riverfront Stadium (1-4) | 45-55 | Lost 2 |
| » W: Fred Norman (10-9) L: Ed Halicki (0-3) | Fifth | 20½ out |
| Friday, July 26 |
| » Defeated Reds (60-41), 5-4 | Riverfront Stadium (2-4) | 46-55 | |
| » W: Jim Barr (8-5) L: Don Gullett (12-7) S: Elias Sosa (4) | Fifth | 19½ out |
| Saturday, July 27 |
| » Lost to Astros (53-48), 11-3 | Astrodome (1-4) | 46-56 | |
| » W: Larry Dierker (7-6) L: John D'Acquisto (9-8) | Fifth | 19½ out |
| Sunday, July 28 |
| » Lost to Astros (54-48), 3-2 | Astrodome (1-5) | 46-57 | Lost 2 |
| » W: Jim York (2-1) L: Randy Moffitt (4-5) | Fifth | 19½ out |
| Monday, July 29 |
| » Defeated Astros (54-49), 7-2 | Astrodome (2-5) | 47-57 | |
| » W: Ed Halicki (1-3) L: Claude Osteen (9-9) | Fifth | 19½ out |
| Tuesday, July 30 |
| » Defeated Braves (53-51), 6-3 | Atlanta-Fulton County Stadium (4-1) | 48-57 | Won 2 |
| » W: Elias Sosa (6-5) L: Danny Frisella (3-4) | Fifth | 19½ out |
| Wednesday, July 31 |
| » Lost to Braves (54-51), 9-0 | Atlanta-Fulton County Stadium (4-2) | 48-58 | |
| » W: Phil Niekro (11-9) L: John D'Acquisto (9-9) | Fifth | 20½ out |
| Thursday, August 1 |
| » Lost to Reds (64-43), 9-7 | Candlestick Park (25-26) | 48-59 | Lost 2 |
| » W: Clay Carroll (6-3) L: Ron Bryant (2-12) | Fifth | 21½ out |
| Friday, August 2 |
| » Lost to Reds (65-43), 9-4 | Candlestick Park (25-27) | 48-60 | Lost 3 |
| » W: Jack Billingham (13-7) L: Ed Halicki (1-4) | Fifth | 22½ out |
| Saturday, August 3 |
| » Defeated Braves (54-52), 3-1 | Candlestick Park (26-27) | 49-60 | |
| » W: Jim Barr (9-5) L: Buzz Capra (10-6) | Fifth | 22½ out |
| Sunday, August 4 |
| » Lost to Braves (55-52), 4-2 | Candlestick Park (26-28) | 49-61 | |
| » W: Tom House (4-2) L: John D'Acquisto (9-10) | Fifth | 23 out |
| » Defeated Braves (55-53), 5-2 | Candlestick Park (27-28) | 50-61 | |
| » W: Mike Caldwell (10-3) L: Max Leon (1-3) | Fifth | 23 out |
| Monday, August 5 |
| » Lost to Astros (56-52), 7-2 | Candlestick Park (27-29) | 50-62 | |
| » W: Don Wilson (8-8) L: Charlie Williams (1-3) | Fifth | 24 out |
| Tuesday, August 6 |
| » Lost to Astros (57-52), 13-4 | Candlestick Park (27-30) | 50-63 | Lost 2 |
| » W: Mike Cosgrove (6-1) L: Ed Halicki (1-5) | Fifth | 24 out |
| Friday, August 9 |
| » Defeated Cubs (46-64), 3-0 | Wrigley Field (2-2) | 51-63 | |
| » W: Jim Barr (10-5) L: Steve Stone (3-4) | Fifth | 22½ out |
| Sunday, August 11 |
| » Defeated Cubs (46-65), 5-3 | Wrigley Field (3-2) | 52-63 | Won 2 |
| » W: Mike Caldwell (11-3) L: Rick Reuschel (11-9) | Fifth | 22½ out |
| » Defeated Cubs (46-66), 6-4 | Wrigley Field (4-2) | 53-63 | Won 3 |
| » W: Elias Sosa (7-5) L: Oscar Zamora (3-5) | Fifth | 22½ out |
| » Major-league debuts: Rob Sperring (Cubs) |
| Monday, August 12 |
| » Lost to Phillies (59-57), 4-1 | Veteran's Stadium (1-3) | 53-64 | |
| » W: Jim Lonborg (13-11) L: Ed Halicki (1-6) | Fifth | 22½ out |
| Tuesday, August 13 |
| » Lost to Phillies (60-57), 6-5 | Veteran's Stadium (1-4) | 53-65 | Lost 2 |
| » W: Dick Ruthven (5-9) L: Jim Barr (10-6) S: Ron Schueler (1) | Fifth | 22½ out |
| Wednesday, August 14 |
| » Defeated Phillies (60-58), 6-4 | Veteran's Stadium (2-4) | 54-65 | |
| » W: Elias Sosa (8-5) L: Mac Scarce (3-7) | Fifth | 21½ out |
| Friday, August 16 |
| » Lost to Cardinals (63-57), 2-1 | Busch Stadium II (2-2) | 54-66 | |
| » W: Bob Gibson (7-10) L: John D'Acquisto (9-11) | Fifth | 21½ out |
| Saturday, August 17 |
| » Lost to Cardinals (64-57), 5-3 | Busch Stadium II (2-3) | 54-67 | Lost 2 |
| » W: Mike Garman (5-2) L: Randy Moffitt (4-6) | Fifth | 21½ out |
| Sunday, August 18 |
| » Lost to Cardinals (65-57), 4-1 | Busch Stadium II (2-4) | 54-68 | Lost 3 |
| » W: Jack Curtis (7-11) L: Tom Bradley (7-11) | Fifth | 21½ out |
| Monday, August 19 |
| » Defeated Pirates (62-60), 5-3 | Three Rivers Stadium (1-3) | 55-68 | |
| » W: Ron Bryant (3-12) L: Jim Rooker (8-10) S: Elias Sosa (5) | Fifth | 21½ out |
| Tuesday, August 20 |
| » Defeated Pirates (62-61), 8-7 | Three Rivers Stadium (2-3) | 56-68 | Won 2 |
| » W: Mike Caldwell (12-3) L: John Morlan (0-3) | Fifth | 21½ out |
| Wednesday, August 21 |
| » Lost to Pirates (63-61), 4-2 | Three Rivers Stadium (2-4) | 56-69 | |
| » W: Dock Ellis (10-8) L: Ed Halicki (1-7) | Fifth | 22½ out |
| Friday, August 23 |
| » Lost to Cubs (51-71), 1-0 | Candlestick Park (27-31) | 56-70 | Lost 2 |
| » W: Rick Reuschel (12-9) L: Jim Barr (10-7) | Fifth | 22½ out |
| Future Giant Bobby Estalella is born in Hialeah, FL. |
| Saturday, August 24 |
| » Lost to Cubs (52-71), 2-1 | Candlestick Park (27-32) | 56-71 | Lost 3 |
| » W: Steve Stone (6-4) L: Ron Bryant (3-13) S: Burt Hooton (1) | Fifth | 23½ out |
| Sunday, August 25 |
| » Defeated Cubs (52-72), 4-3 | Candlestick Park (28-32) | 57-71 | |
| » W: Elias Sosa (9-5) L: Oscar Zamora (3-8) | Fifth | 23½ out |
| Tuesday, August 27 |
| » Lost to Pirates (67-61), 13-2 | Candlestick Park (28-33) | 57-72 | |
| » W: Dock Ellis (11-8) L: John D'Acquisto (9-12) | Fifth | 24½ out |
| Wednesday, August 28 |
| » Lost to Pirates (68-61), 3-1 | Candlestick Park (28-34) | 57-73 | Lost 2 |
| » W: Dave Giusti (6-4) L: Jim Barr (10-8) | Fifth | 25½ out |
| Thursday, August 29 |
| » Defeated Pirates (68-62), 3-2 | Candlestick Park (29-34) | 58-73 | |
| » W: Randy Moffitt (5-6) L: Dave Giusti (6-5) | Fifth | 25½ out |
| Friday, August 30 |
| » Defeated Cardinals (68-64), 8-2 | Candlestick Park (30-34) | 59-73 | Won 2 |
| » W: Mike Caldwell (13-3) L: Sonny Siebert (7-8) | Fifth | 24½ out |
| » Major-league debuts: Keith Hernandez (Cardinals) |
| Saturday, August 31 |
| » Defeated Cardinals (68-65), 3-2 | Candlestick Park (31-34) | 60-73 | Won 3 |
| » W: John D'Acquisto (10-12) L: Bob Forsch (3-4) S: John Morris (1) | Fifth | 23½ out |
| Sunday, September 1 |
| » Lost to Cardinals (69-65), 8-1 | Candlestick Park (31-35) | 60-74 | |
| » W: Bob Gibson (8-12) L: Ed Halicki (1-8) | Fifth | 24½ out |
| Monday, September 2 |
| » Defeated Dodgers (84-50), 5-3 | Dodger Stadium (3-4) | 61-74 | |
| » W: Jim Barr (11-8) L: Andy Messersmith (16-6) | Fifth | 23½ out |
| Tuesday, September 3 |
| » Defeated Dodgers (84-51), 9-5 | Dodger Stadium (4-4) | 62-74 | Won 2 |
| » W: John Montefusco (1-0) L: Doug Rau (12-7) | Fifth | 22½ out |
| » Major-league debuts: John Montefusco (Giants) |
| Wednesday, September 4 |
| » Lost to Dodgers (85-51), 6-3 | Dodger Stadium (4-5) | 62-75 | |
| » W: Charlie Hough (8-3) L: Randy Moffitt (5-7) | Fifth | 23½ out |
| Friday, September 6 |
| » Defeated Braves (77-62), 2-0 | Atlanta-Fulton County Stadium (5-2) | 63-75 | |
| » W: John D'Acquisto (11-12) L: Carl Morton (14-9) | Fifth | 23½ out |
| Saturday, September 7 |
| » Defeated Braves (77-63), 6-0 | Atlanta-Fulton County Stadium (6-2) | 64-75 | Won 2 |
| » W: Jim Barr (12-8) L: Phil Niekro (16-12) | Fifth | 22½ out |
| » Major-league debuts: Mike Beard (Braves) |
| Sunday, September 8 |
| » Lost to Braves (78-63), 5-3 | Atlanta-Fulton County Stadium (6-3) | 64-76 | |
| » W: Ron Reed (10-8) L: Ron Bryant (3-14) | Fifth | 23½ out |
| » Major-league debuts: Butch Metzger (Giants) |
| Monday, September 9 |
| » Defeated Astros (71-69), 8-6 | Astrodome (3-5) | 65-76 | |
| » W: John Montefusco (2-0) L: Larry Dierker (9-9) S: Elias Sosa (6) | Fifth | 23½ out |
| Tuesday, September 10 |
| » Defeated Astros (71-70), 6-5 | Astrodome (4-5) | 66-76 | Won 2 |
| » W: John Morris (1-0) L: Ken Forsch (5-7) S: Randy Moffitt (15) | Fifth | 23½ out |
| » Major-league debuts: Gary Lavelle (Giants) |
| Wednesday, September 11 |
| » Lost to Dodgers (90-52), 5-4 | Candlestick Park (31-36) | 66-77 | |
| » W: Andy Messersmith (17-6) L: Gary Lavelle (0-1) | Fifth | 24½ out |
| Thursday, September 12 |
| » Lost to Dodgers (91-52), 11-0 | Candlestick Park (31-37) | 66-78 | Lost 2 |
| » W: Al Downing (5-6) L: Jim Barr (12-9) | Fifth | 25½ out |
| Friday, September 13 |
| » Lost to Astros (72-72), 5-4 | Candlestick Park (31-38) | 66-79 | Lost 3 |
| » W: Mike Cosgrove (7-3) L: Ron Bryant (3-15) S: Ken Forsch (9) | Fifth | 25½ out |
| Saturday, September 14 |
| » Lost to Astros (73-72), 5-0 | Candlestick Park (31-39) | 66-80 | Lost 4 |
| » W: Larry Dierker (10-9) L: John Montefusco (2-1) | Fifth | 25½ out |
| Sunday, September 15 |
| » Lost to Astros (74-72), 6-0 | Candlestick Park (31-40) | 66-81 | Lost 5 |
| » W: Paul Siebert (1-0) L: Mike Caldwell (13-4) | Fifth | 26 out |
| » Defeated Astros (74-73), 8-4 | Candlestick Park (32-40) | 67-81 | |
| » W: John D'Acquisto (12-12) L: Dave Roberts (9-12) | Fifth | 26 out |
| Monday, September 16 |
| » Defeated Braves (81-68), 4-2 | Candlestick Park (33-40) | 68-81 | Won 2 |
| » W: Jim Barr (13-9) L: Ron Reed (10-10) | Fifth | 26 out |
| Tuesday, September 17 |
| » Lost to Braves (82-68), 4-3 | Candlestick Park (33-41) | 68-82 | |
| » W: Buzz Capra (15-8) L: John Morris (1-1) | Fifth | 26 out |
| Wednesday, September 18 |
| » Lost to Braves (83-68), 4-2 | Candlestick Park (33-42) | 68-83 | Lost 2 |
| » W: Carl Morton (16-10) L: John Montefusco (2-2) S: Tom House (10) | Fifth | 26 out |
| Thursday, September 19 |
| » Lost to Reds (92-59), 8-4 | Candlestick Park (33-43) | 68-84 | Lost 3 |
| » W: Fred Norman (12-12) L: John D'Acquisto (12-13) | Fifth | 27 out |
| Former Giant |