| Tuesday, January 9 |
| Future Cardinal Aaron Holbert is born in Torrance, CA. Former Cardinal Lyn Lary dies in Downey, CA at the age of 67 |
| Thursday, February 8 |
| Future Cardinal Keith McDonald is born in Yokosuka, Japan. |
| Thursday, February 22 |
| Future Cardinal Rick Heiserman is born in Atlantic, IA. |
| Saturday, February 24 |
| Future Cardinal Stubby Clapp is born in Windsor, ON. |
| Sunday, March 4 |
| Future Cardinal Brian Barber is born in Hamilton, OH. |
| Monday, March 12 |
| Former Cardinal Frankie Frisch dies in Wilmington, DE at the age of 75. |
| Thursday, April 5 |
| » Major-league debuts: Gene Locklear (Reds) |
| Friday, April 6 |
| » Lost to Pirates (1-0), 7-5 | Three Rivers Stadium (0-1) | 0-1 | |
| » Starters: Bob Gibson vs Steve Blass | Second | 1 out |
| Sunday, April 8 |
| » Lost to Pirates (2-0), 4-3 | Three Rivers Stadium (0-2) | 0-2 | Lost 2 |
| » Starters: Rick Wise vs Nelson Briles | Sixth | 3 out |
| » Lost to Pirates (3-0), 5-3 | Three Rivers Stadium (0-3) | 0-3 | Lost 3 |
| » Starters: Scipio Spinks vs Dock Ellis | Sixth | 3 out |
| Monday, April 9 |
| » Major-league debuts: Rich Troedson (Padres) |
| Wednesday, April 11 |
| » Lost to Mets (3-0), 5-4 | Busch Stadium II (0-1) | 0-4 | Lost 4 |
| » Starters: Jerry Koosman vs Reggie Cleveland | Fifth | 3½ out |
| Thursday, April 12 |
| » Lost to Mets (4-0), 2-1 | Busch Stadium II (0-2) | 0-5 | Lost 5 |
| » Starters: Tom Seaver vs Bob Gibson | Fifth | 4½ out |
| Friday, April 13 |
| » Defeated Cubs (2-3), 6-3 | Busch Stadium II (1-2) | 1-5 | |
| » Starters: Milt Pappas vs Rick Wise | Fourth | 4 out |
| Saturday, April 14 |
| » Lost to Cubs (3-3), 4-1 | Busch Stadium II (1-3) | 1-6 | |
| » Starters: Rick Reuschel vs Scipio Spinks | Fourth | 4 out |
| Sunday, April 15 |
| » Lost to Cubs (4-3), 8-6 | Busch Stadium II (1-4) | 1-7 | Lost 2 |
| » Starters: Burt Hooton vs Reggie Cleveland | Fifth | 5 out |
| Tuesday, April 17 |
| » Lost to Pirates (6-1), 4-3 | Busch Stadium II (1-5) | 1-8 | Lost 3 |
| » Starters: Steve Blass vs Bob Gibson | Fifth | 6 out |
| Wednesday, April 18 |
| » Lost to Pirates (7-1), 8-2 | Busch Stadium II (1-6) | 1-9 | Lost 4 |
| » Starters: Bob Moose vs Rick Wise | Fifth | 7 out |
| Saturday, April 21 |
| » Lost to Phillies (5-6), 7-4 | Veteran's Stadium (0-1) | 1-10 | Lost 5 |
| » Starters: Scipio Spinks vs Jim Lonborg | Fifth | 7 out |
| Sunday, April 22 |
| » Lost to Phillies (6-6), 4-2 | Veteran's Stadium (0-2) | 1-11 | Lost 6 |
| » Starters: Reggie Cleveland vs Steve Carlton | Sixth | 8 out |
| » Lost to Phillies (7-6), 2-1 | Veteran's Stadium (0-3) | 1-12 | Lost 7 |
| » Starters: Bob Gibson vs Dick Ruthven | Sixth | 8 out |
| Tuesday, April 24 |
| » Defeated Dodgers (7-11), 2-0 | Busch Stadium II (2-6) | 2-12 | |
| » Starters: Claude Osteen vs Rick Wise | Fifth | 7 out |
| Wednesday, April 25 |
| » Lost to Dodgers (8-11), 5-3 | Busch Stadium II (2-7) | 2-13 | |
| » Starters: Al Downing vs Scipio Spinks | Fourth | 7½ out |
| Friday, April 27 |
| » Lost to Giants (17-5), 5-0 | Busch Stadium II (2-8) | 2-14 | Lost 2 |
| » Starters: Jim Barr vs Bob Gibson | Fifth | 8 out |
| Saturday, April 28 |
| » Lost to Giants (18-5), 1-0 | Busch Stadium II (2-9) | 2-15 | Lost 3 |
| » Starters: Jim Willoughby vs Reggie Cleveland | Fifth | 8 out |
| Sunday, April 29 |
| » Defeated Giants (18-6), 8-3 | Busch Stadium II (3-9) | 3-15 | |
| » Starters: Juan Marichal vs Rick Wise | Fifth | 8 out |
| Tuesday, May 1 |
| » Lost to Padres (8-15), 10-5 | San Diego/Jack Murphy Stadium (0-1) | 3-16 | |
| » Starters: Scipio Spinks vs Mike Corkins | Sixth | 9 out |
| Wednesday, May 2 |
| » Defeated Padres (8-16), 5-4 | San Diego/Jack Murphy Stadium (1-1) | 4-16 | |
| » Starters: Bob Gibson vs Clay Kirby | Fifth | 8 out |
| Thursday, May 3 |
| » Defeated Padres (8-17), 3-1 | San Diego/Jack Murphy Stadium (2-1) | 5-16 | Won 2 |
| » Starters: Reggie Cleveland vs Bill Greif | Fifth | 8 out |
| Friday, May 4 |
| » Lost to Dodgers (13-13), 6-5 | Dodger Stadium (0-1) | 5-17 | |
| » Starters: Rick Wise vs Claude Osteen | Fifth | 8 out |
| Saturday, May 5 |
| » Lost to Dodgers (14-13), 11-3 | Dodger Stadium (0-2) | 5-18 | Lost 2 |
| » Starters: Jim Bibby vs Tommy John | Sixth | 9 out |
| Sunday, May 6 |
| » Lost to Dodgers (15-13), 3-0 | Dodger Stadium (0-3) | 5-19 | Lost 3 |
| » Starters: Alan Foster vs Al Downing | Sixth | 8½ out |
| Tuesday, May 8 |
| » Lost to Giants (23-9), 9-7 | Candlestick Park (0-1) | 5-20 | Lost 4 |
| » Starters: Bob Gibson vs Jim Barr | Sixth | 9 out |
| Wednesday, May 9 |
| » Defeated Giants (23-10), 3-1 | Candlestick Park (1-1) | 6-20 | |
| » Starters: Reggie Cleveland vs Ron Bryant | Sixth | 9 out |
| Thursday, May 10 |
| » Lost to Giants (24-10), 6-3 | Candlestick Park (1-2) | 6-21 | |
| » Starters: Rick Wise vs Sam McDowell | Sixth | 9½ out |
| Friday, May 11 |
| » Defeated Expos (12-14), 12-0 | Busch Stadium II (4-9) | 7-21 | |
| » Starters: Mike Torrez vs Alan Foster | Sixth | 9½ out |
| Saturday, May 12 |
| » Lost to Expos (13-14), 3-1 | Busch Stadium II (4-10) | 7-22 | |
| » Starters: Balor Moore vs Jim Bibby | Sixth | 10½ out |
| Sunday, May 13 |
| » Defeated Expos (13-15), 3-2 | Busch Stadium II (5-10) | 8-22 | |
| » Starters: Bill Stoneman vs Bob Gibson | Sixth | 11 out |
| Monday, May 14 |
| » Lost to Phillies (12-19), 10-5 | Busch Stadium II (5-11) | 8-23 | |
| » Starters: Ken Brett vs Reggie Cleveland | Sixth | 11½ out |
| Tuesday, May 15 |
| » Defeated Phillies (12-20), 8-4 | Busch Stadium II (6-11) | 9-23 | |
| » Starters: Larry Christenson vs Rick Wise | Sixth | 11½ out |
| Wednesday, May 16 |
| » Defeated Cubs (22-14), 3-1 | Wrigley Field (1-0) | 10-23 | Won 2 |
| » Starters: Alan Foster vs Rick Reuschel | Sixth | 10½ out |
| Thursday, May 17 |
| » Defeated Cubs (22-15), 6-4 | Wrigley Field (2-0) | 11-23 | Won 3 |
| » Starters: Jim Bibby vs Milt Pappas | Fifth | 9½ out |
| Sunday, May 20 |
| » Lost to Expos (15-17), 4-1 | Parc Jarry (0-1) | 11-24 | |
| » Starters: Bob Gibson vs Balor Moore | Fifth | 10 out |
| » Defeated Expos (15-18), 7-3 | Parc Jarry (1-1) | 12-24 | |
| » Starters: Reggie Cleveland vs Bill Stoneman | Fifth | 10 out |
| Monday, May 21 |
| Former Cardinal Herm Wehmeier dies in Dallas, TX at the age of 47. |
| Tuesday, May 22 |
| » Defeated Mets (19-17), 5-3 | Shea Stadium (1-0) | 13-24 | Won 2 |
| » Starters: Rick Wise vs Jerry Koosman | Sixth | 9 out |
| Friday, May 25 |
| » Defeated Braves (17-24), 4-1 | Busch Stadium II (7-11) | 14-24 | Won 3 |
| » Starters: Ron Reed vs Alan Foster | Sixth | 9½ out |
| Saturday, May 26 |
| » Defeated Braves (17-25), 2-0 | Busch Stadium II (8-11) | 15-24 | Won 4 |
| » Starters: Phil Niekro vs Bob Gibson | Fifth | 9½ out |
| Sunday, May 27 |
| » Defeated Braves (17-26), 5-4 | Busch Stadium II (9-11) | 16-24 | Won 5 |
| » Starters: Gary Gentry vs Reggie Cleveland | Fifth | 9½ out |
| Monday, May 28 |
| » Defeated Braves (17-27), 3-2 | Busch Stadium II (10-11) | 17-24 | Won 6 |
| » Starters: Roric Harrison vs Rick Wise | Fifth | 8½ out |
| Tuesday, May 29 |
| » Defeated Reds (26-20), 2-0 | Busch Stadium II (11-11) | 18-24 | Won 7 |
| » Starters: Clay Carroll vs Scipio Spinks | Fifth | 8½ out |
| Wednesday, May 30 |
| » Defeated Reds (26-21), 5-2 | Busch Stadium II (12-11) | 19-24 | Won 8 |
| » Starters: Don Gullett vs Alan Foster | Fifth | 7½ out |
| Thursday, May 31 |
| » Lost to Reds (27-21), 3-2 | Busch Stadium II (12-12) | 19-25 | |
| » Starters: Ross Grimsley vs Bob Gibson | Fifth | 8½ out |
| Friday, June 1 |
| » Defeated Astros (29-23), 4-2 | Busch Stadium II (13-12) | 20-25 | |
| » Starters: Jerry Reuss vs Reggie Cleveland | Fifth | 7½ out |
| Saturday, June 2 |
| » Defeated Astros (29-24), 6-2 | Busch Stadium II (14-12) | 21-25 | Won 2 |
| » Starters: Larry Dierker vs Rick Wise | Fifth | 7½ out |
| Sunday, June 3 |
| » Defeated Astros (29-25), 2-1 | Busch Stadium II (15-12) | 22-25 | Won 3 |
| » Starters: Ken Forsch vs Scipio Spinks | Fifth | 7½ out |
| Tuesday, June 5 |
| » Defeated Padres (19-35), 5-3 | Busch Stadium II (16-12) | 23-25 | Won 4 |
| » Starters: Bill Greif vs Alan Foster | Fourth | 6½ out |
| Wednesday, June 6 |
| » Defeated Padres (19-36), 6-3 | Busch Stadium II (17-12) | 24-25 | Won 5 |
| » Starters: Clay Kirby vs Bob Gibson | Second | 6½ out |
| Thursday, June 7 |
| » Lost to Padres (20-36), 4-3 | Busch Stadium II (17-13) | 24-26 | |
| » Starters: Mike Caldwell vs Reggie Cleveland | Second | 6½ out |
| Friday, June 8 |
| » Lost to Braves (21-33), 5-3 | Atlanta-Fulton County Stadium (0-1) | 24-27 | Lost 2 |
| » Starters: Rick Wise vs Ron Reed | Third | 7½ out |
| Saturday, June 9 |
| » Lost to Braves (22-33), 8-2 | Atlanta-Fulton County Stadium (0-2) | 24-28 | Lost 3 |
| » Starters: Scipio Spinks vs Phil Niekro | Fourth | 7½ out |
| Sunday, June 10 |
| » Defeated Braves (22-34), 4-3 | Atlanta-Fulton County Stadium (1-2) | 25-28 | |
| » Starters: Alan Foster vs Gary Gentry | Fourth | 8 out |
| » Lost to Braves (23-34), 5-2 | Atlanta-Fulton County Stadium (1-3) | 25-29 | |
| » Starters: Tom Murphy vs Roric Harrison | Fourth | 8 out |
| » Major-league debuts: Jim Dwyer (Cardinals) |
| Monday, June 11 |
| » Defeated Reds (31-26), 12-4 | Riverfront Stadium (1-0) | 26-29 | |
| » Starters: Bob Gibson vs Don Gullett | Third | 7½ out |
| Tuesday, June 12 |
| » Defeated Reds (31-27), 11-5 | Riverfront Stadium (2-0) | 27-29 | Won 2 |
| » Starters: Reggie Cleveland vs Ross Grimsley | Third | 7½ out |
| Wednesday, June 13 |
| » Defeated Reds (31-28), 8-0 | Riverfront Stadium (3-0) | 28-29 | Won 3 |
| » Starters: Rick Wise vs Jack Billingham | Third | 6½ out |
| Friday, June 15 |
| » Lost to Astros (35-29), 3-2 | Astrodome (0-1) | 28-30 | |
| » Starters: Alan Foster vs Dave Roberts | Third | 7 out |
| Saturday, June 16 |
| » Defeated Astros (35-30), 5-3 | Astrodome (1-1) | 29-30 | |
| » Starters: Bob Gibson vs Ken Forsch | Third | 7 out |
| Sunday, June 17 |
| » Lost to Astros (36-30), 7-3 | Astrodome (1-2) | 29-31 | |
| » Starters: Reggie Cleveland vs Don Wilson | Fourth | 7½ out |
| Monday, June 18 |
| » Defeated Expos (29-28), 1-0 | Busch Stadium II (18-13) | 30-31 | |
| » Starters: Balor Moore vs Rick Wise | Third | 6½ out |
| Tuesday, June 19 |
| » Lost to Expos (30-28), 3-1 | Busch Stadium II (18-14) | 30-32 | |
| » Starters: Steve Renko vs Tom Murphy | Third | 7 out |
| Wednesday, June 20 |
| » Lost to Expos (31-28), 5-1 | Busch Stadium II (18-15) | 30-33 | Lost 2 |
| » Starters: Ernie McAnally vs Alan Foster | Third | 8 out |
| Thursday, June 21 |
| » Defeated Expos (31-29), 4-3 | Busch Stadium II (19-15) | 31-33 | |
| » Starters: Bill Stoneman vs Bob Gibson | Third | 7½ out |
| Friday, June 22 |
| » Defeated Cubs (41-29), 3-0 | Busch Stadium II (20-15) | 32-33 | Won 2 |
| » Starters: Burt Hooton vs Reggie Cleveland | Third | 6½ out |
| Saturday, June 23 |
| » Defeated Cubs (41-30), 3-2 | Busch Stadium II (21-15) | 33-33 | Won 3 |
| » Starters: Fergie Jenkins vs Rick Wise | Third | 5½ out |
| Sunday, June 24 |
| » Lost to Cubs (42-30), 2-0 | Busch Stadium II (21-16) | 33-34 | |
| » Starters: Milt Pappas vs Tom Murphy | Third | 6½ out |
| Monday, June 25 |
| » Lost to Phillies (32-36), 7-6 | Veteran's Stadium (0-4) | 33-35 | Lost 2 |
| » Starters: Alan Foster vs Wayne Twitchell | Third | 7½ out |
| Tuesday, June 26 |
| » Lost to Phillies (33-36), 10-3 | Veteran's Stadium (0-5) | 33-36 | Lost 3 |
| » Starters: Bob Gibson vs Dick Ruthven | Third | 8 out |
| » Defeated Phillies (33-37), 5-4 | Veteran's Stadium (1-5) | 34-36 | |
| » Starters: Rich Folkers vs Steve Carlton | Third | 8 out |
| Wednesday, June 27 |
| » Defeated Pirates (31-39), 15-4 | Three Rivers Stadium (1-3) | 35-36 | Won 2 |
| » Starters: Reggie Cleveland vs Jim Rooker | Third | 7½ out |
| Thursday, June 28 |
| » Lost to Pirates (32-39), 6-0 | Three Rivers Stadium (1-4) | 35-37 | |
| » Starters: Rick Wise vs Dock Ellis | Third | 8½ out |
| Friday, June 29 |
| » Defeated Phillies (35-39), 2-1 | Busch Stadium II (22-16) | 36-37 | |
| » Starters: Wayne Twitchell vs Tom Murphy | Second | 8½ out |
| Saturday, June 30 |
| » Defeated Phillies (35-40), 9-8 | Busch Stadium II (23-16) | 37-37 | Won 2 |
| » Starters: Steve Carlton vs Alan Foster | Second | 7½ out |
| Sunday, July 1 |
| » Lost to Phillies (36-40), 1-0 | Busch Stadium II (23-17) | 37-38 | |
| » Starters: Dick Ruthven vs Bob Gibson | Second | 8 out |
| Monday, July 2 |
| » Defeated Phillies (36-41), 7-4 | Busch Stadium II (24-17) | 38-38 | |
| » Starters: Mike Wallace vs Reggie Cleveland | Second | 7½ out |
| Former Cardinal Chick Hafey dies in Calistoga, CA at the age of 71. |
| Tuesday, July 3 |
| » Defeated Pirates (36-40), 4-0 | Busch Stadium II (25-17) | 39-38 | Won 2 |
| » Starters: Dock Ellis vs Rick Wise | Second | 6 out |
| » Defeated Pirates (36-41), 7-6 | Busch Stadium II (26-17) | 40-38 | Won 3 |
| » Starters: Steve Blass vs Rich Folkers | Second | 6 out |
| Wednesday, July 4 |
| » Defeated Pirates (36-42), 11-3 | Busch Stadium II (27-17) | 41-38 | Won 4 |
| » Starters: Bob Moose vs Tom Murphy | Second | 6 out |
| Former Cardinal Walter Schmidt dies in Modesto, CA at the age of 87. |
| Thursday, July 5 |
| » Lost to Pirates (37-42), 3-2 | Busch Stadium II (27-18) | 41-39 | |
| » Starters: Nelson Briles vs Alan Foster | Second | 6 out |
| Friday, July 6 |
| » Defeated Giants (48-38), 3-2 | Candlestick Park (2-2) | 42-39 | |
| » Starters: Bob Gibson vs Jim Barr | Second | 6 out |
| Saturday, July 7 |
| » Defeated Giants (48-39), 6-1 | Candlestick Park (3-2) | 43-39 | Won 2 |
| » Starters: Reggie Cleveland vs Don Carrithers | Second | 5 out |
| Future Cardinal Jose Jimenez is born in San Pedro de Macoris, D.R. |
| Sunday, July 8 |
| » Lost to Giants (49-39), 5-4 | Candlestick Park (3-3) | 43-40 | |
| » Starters: Rick Wise vs Tom Bradley | Second | 5 out |
| Tuesday, July 10 |
| » Defeated Dodgers (54-34), 5-4 | Dodger Stadium (1-3) | 44-40 | |
| » Starters: Tom Murphy vs Claude Osteen | Second | 5 out |
| Wednesday, July 11 |
| » Lost to Dodgers (55-34), 3-1 | Dodger Stadium (1-4) | 44-41 | |
| » Starters: Bob Gibson vs Don Sutton | Second | 5 out |
| Thursday, July 12 |
| » Lost to Dodgers (56-34), 4-0 | Dodger Stadium (1-5) | 44-42 | Lost 2 |
| » Starters: Rich Folkers vs Andy Messersmith | Second | 5½ out |
| Friday, July 13 |
| » Defeated Padres (31-58), 5-3 | San Diego/Jack Murphy Stadium (3-1) | 45-42 | |
| » Starters: Rick Wise vs Bill Greif | Second | 4½ out |
| Saturday, July 14 |
| » Defeated Padres (31-59), 5-3 | San Diego/Jack Murphy Stadium (4-1) | 46-42 | Won 2 |
| » Starters: Alan Foster vs Randy Jones | Second | 3½ out |
| Sunday, July 15 |
| » Defeated Padres (31-60), 5-4 | San Diego/Jack Murphy Stadium (5-1) | 47-42 | Won 3 |
| » Starters: Tom Murphy vs Rich Troedson | Second | 2½ out |
| Monday, July 16 |
| » Defeated Giants (52-42), 3-2 | Busch Stadium II (28-18) | 48-42 | Won 4 |
| » Starters: Jim Barr vs Bob Gibson | Second | 2 out |
| Tuesday, July 17 |
| » Defeated Giants (52-43), 2-1 | Busch Stadium II (29-18) | 49-42 | Won 5 |
| » Starters: Tom Bradley vs Rich Folkers | Second | 1 out |
| Wednesday, July 18 |
| » Lost to Giants (53-43), 8-3 | Busch Stadium II (29-19) | 49-43 | |
| » Starters: Ron Bryant vs Rick Wise | Second | 1 out |
| Thursday, July 19 |
| » Lost to Dodgers (62-35), 3-2 | Busch Stadium II (29-20) | 49-44 | Lost 2 |
| » Starters: Al Downing vs Alan Foster | Second | 2 out |
| Friday, July 20 |
| » Lost to Dodgers (63-35), 4-3 | Busch Stadium II (29-21) | 49-45 | Lost 3 |
| » Starters: Claude Osteen vs Tom Murphy | Second | 2 out |
| Saturday, July 21 |
| » Defeated Dodgers (63-36), 8-1 | Busch Stadium II (30-21) | 50-45 | |
| » Starters: Don Sutton vs Bob Gibson | Second | 1 out |
| Sunday, July 22 |
| » Defeated Dodgers (63-37), 5-4 | Busch Stadium II (31-21) | 51-45 | Won 2 |
| » Starters: Andy Messersmith vs Reggie Cleveland | Second | 1 out |
| Thursday, July 26 |
| » Defeated Mets (42-52), 13-1 | Busch Stadium II (32-21) | 52-45 | Won 3 |
| » Starters: Jon Matlack vs Bob Gibson | First | -- |
| » Defeated Mets (42-53), 2-1 | Busch Stadium II (33-21) | 53-45 | Won 4 |
| » Starters: Jerry Koosman vs Alan Foster | First | -- |
| » Major-league debuts: Bake McBride (Cardinals) |
| Friday, July 27 |
| » Lost to Mets (43-53), 2-1 | Busch Stadium II (33-22) | 53-46 | |
| » Starters: Tom Seaver vs Rick Wise | First | -- |
| Saturday, July 28 |
| » Defeated Cubs (52-49), 7-2 | Wrigley Field (3-0) | 54-46 | |
| » Starters: Reggie Cleveland vs Fergie Jenkins | First | -- |
| » Major-league debuts: Andre Thornton (Cubs) |
| Sunday, July 29 |
| » Defeated Cubs (52-50), 5-3 | Wrigley Field (4-0) | 55-46 | Won 2 |
| » Starters: Tom Murphy vs Milt Pappas | First | -- |
| » Lost to Cubs (53-50), 5-4 | Wrigley Field (4-1) | 55-47 | |
| » Starters: Rich Folkers vs Bill Bonham | First | -- |
| Monday, July 30 |
| » Lost to Cubs (54-50), 3-1 | Wrigley Field (4-2) | 55-48 | Lost 2 |
| » Starters: Bob Gibson vs Rick Reuschel | First | -- |
| Tuesday, July 31 |
| » Defeated Expos (50-53), 10-5 | Parc Jarry (2-1) | 56-48 | |
| » Starters: Alan Foster vs Ernie McAnally | First | -- |
| Wednesday, August 1 |
| » Defeated Expos (50-54), 9-3 | Parc Jarry (3-1) | 57-48 | Won 2 |
| » Starters: Rick Wise vs Bill Stoneman | First | -- |
| » Defeated Expos (50-55), 2-0 | Parc Jarry (4-1) | 58-48 | Won 3 |
| » Starters: Reggie Cleveland vs Mike Torrez | First | -- |
| Thursday, August 2 |
| » Lost to Expos (51-55), 2-0 | Parc Jarry (4-2) | 58-49 | |
| » Starters: Tom Murphy vs Balor Moore | First | -- |
| Friday, August 3 |
| » Lost to Mets (48-57), 7-3 | Shea Stadium (1-1) | 58-50 | Lost 2 |
| » Starters: Rich Folkers vs Jon Matlack | First | -- |
| Saturday, August 4 |
| » Defeated Mets (48-58), 4-3 | Shea Stadium (2-1) | 59-50 | |
| » Starters: Bob Gibson vs Jerry Koosman | First | -- |
| Sunday, August 5 |
| » Defeated Mets (48-59), 3-2 | Shea Stadium (3-1) | 60-50 | Won 2 |
| » Starters: Alan Foster vs Tom Seaver | First | -- |
| » Defeated Mets (48-60), 4-1 | Shea Stadium (4-1) | 61-50 | Won 3 |
| » Starters: Rick Wise vs Jim McAndrew | First | -- |
| Monday, August 6 |
| » Lost to Mets (49-60), 10-3 | Shea Stadium (4-2) | 61-51 | |
| » Starters: Reggie Cleveland vs George Stone | First | -- |
| Tuesday, August 7 |
| » Lost to Mets (50-60), 6-5 | Shea Stadium (4-3) | 61-52 | Lost 2 |
| » Starters: Tom Murphy vs Ray Sadecki | First | -- |
| Wednesday, August 8 |
| » Lost to Braves (53-64), 4-1 | Busch Stadium II (33-23) | 61-53 | Lost 3 |
| » Starters: Ron Schueler vs Rich Folkers | First | -- |
| Thursday, August 9 |
| » Lost to Braves (54-64), 8-6 | Busch Stadium II (33-24) | 61-54 | Lost 4 |
| » Starters: Carl Morton vs Alan Foster | First | -- |
| Friday, August 10 |
| » Lost to Reds (70-47), 8-4 | Busch Stadium II (33-25) | 61-55 | Lost 5 |
| » Starters: Ross Grimsley vs Rick Wise | First | -- |
| Saturday, August 11 |
| » Lost to Reds (71-47), 7-5 | Busch Stadium II (33-26) | 61-56 | Lost 6 |
| » Starters: Jack Billingham vs Reggie Cleveland | First | -- |
| » Major-league debuts: Hector Cruz (Cardinals) |
| Sunday, August 12 |
| » Lost to Reds (72-47), 7-2 | Busch Stadium II (33-27) | 61-57 | Lost 7 |
| » Starters: Don Gullett vs Tom Murphy | First | -- |
| » Major-league debuts: Tom Heintzelman (Cardinals) |
| Future Cardinal Gene Stechschulte is born in Lima, OH. |
| Monday, August 13 |
| » Lost to Astros (63-58), 4-0 | Busch Stadium II (33-28) | 61-58 | Lost 8 |
| » Starters: Dave Roberts vs Mike Nagy | First | -- |
| Tuesday, August 14 |
| » Defeated Astros (63-59), 9-5 | Busch Stadium II (34-28) | 62-58 | |
| » Starters: J.R. Richard vs Alan Foster | First | -- |
| Wednesday, August 15 |
| » Lost to Astros (64-59), 3-0 | Busch Stadium II (34-29) | 62-59 | |
| » Starters: Jerry Reuss vs Rick Wise | First | -- |
| Friday, August 17 |
| » Lost to Padres (44-77), 4-2 | Busch Stadium II (34-30) | 62-60 | Lost 2 |
| » Starters: Clay Kirby vs Reggie Cleveland | First | -- |
| Saturday, August 18 |
| » Lost to Padres (45-77), 4-3 | Busch Stadium II (34-31) | 62-61 | Lost 3 |
| » Starters: Rich Troedson vs Mike Nagy | First | -- |
| Sunday, August 19 |
| » Defeated Padres (45-78), 1-0 | Busch Stadium II (35-31) | 63-61 | |
| » Starters: Bill Greif vs Alan Foster | First | -- |
| Future Cardinal Britt Reames is born in Seneca, SC. |
| Tuesday, August 21 |
| » Lost to Braves (61-67), 11-7 | Atlanta-Fulton County Stadium (1-4) | 63-62 | |
| » Starters: Rick Wise vs Roric Harrison | First | -- |
| Former Cardinal Ira Hutchinson dies in Chicago, IL at the age of 63. |
| Wednesday, August 22 |
| » Defeated Braves (61-68), 6-4 | Atlanta-Fulton County Stadium (2-4) | 64-62 | |
| » Starters: Reggie Cleveland vs Ron Schueler | First | -- |
| Friday, August 24 |
| » Defeated Reds (76-54), 5-4 | Riverfront Stadium (4-0) | 65-62 | Won 2 |
| » Starters: Alan Foster vs Jack Billingham | First | -- |
| Saturday, August 25 |
| » Lost to Reds (77-54), 6-4 | Riverfront Stadium (4-1) | 65-63 | |
| » Starters: Rick Wise vs Don Gullett | First | -- |
| » Major-league debuts: Ken Griffey and Sr. (Reds) |
| Sunday, August 26 |
| » Lost to Reds (78-54), 4-1 | Riverfront Stadium (4-2) | 65-64 | Lost 2 |
| » Starters: Reggie Cleveland vs Fred Norman | First | -- |
| Monday, August 27 |
| » Defeated Astros (67-66), 6-3 | Astrodome (2-2) | 66-64 | |
| » Starters: Mike Nagy vs Tom Griffin | First | -- |
| Tuesday, August 28 |
| » Defeated Astros (67-67), 8-3 | Astrodome (3-2) | 67-64 | Won 2 |
| » Starters: Alan Foster vs Jerry Reuss | First | -- |
| Wednesday, August 29 |
| » Lost to Astros (68-67), 3-2 | Astrodome (3-3) | 67-65 | |
| » Starters: Rick Wise vs Dave Roberts | First | -- |
| Thursday, August 30 |
| » Defeated Mets (61-71), 1-0 | Busch Stadium II (36-31) | 68-65 | |
| » Starters: Tom Seaver vs Reggie Cleveland | First | -- |
| Friday, August 31 |
| » Lost to Mets (62-71), 6-4 | Busch Stadium II (36-32) | 68-66 | |
| » Starters: Ray Sadecki vs Mike Nagy | First | -- |
| Saturday, September 1 |
| » Lost to Mets (63-71), 4-1 | Busch Stadium II (36-33) | 68-67 | Lost 2 |
| » Starters: George Stone vs Alan Foster | First | -- |
| Sunday, September 2 |
| » Defeated Mets (63-72), 7-4 | Busch Stadium II (37-33) | 69-67 | |
| » Starters: Jon Matlack vs Rick Wise | First | -- |
| Monday, September 3 |
| » Lost to Pirates (67-66), 5-4 | Three Rivers Stadium (1-5) | 69-68 | |
| » Starters: Reggie Cleveland vs Nelson Briles | First | -- |
| » Defeated Pirates (67-67), 8-3 | Three Rivers Stadium (2-5) | 70-68 | |
| » Starters: Rich Folkers vs Luke Walker | First | -- |
| Tuesday, September 4 |
| » Defeated Pirates (67-68), 4-2 | Three Rivers Stadium (3-5) | 71-68 | Won 2 |
| » Starters: Mike Nagy vs Jim Rooker | First | -- |
| » Major-league debuts: Tommy Cruz (Cardinals) |
| Wednesday, September 5 |
| » Defeated Pirates (67-69), 5-3 | Three Rivers Stadium (4-5) | 72-68 | Won 3 |
| » Starters: Alan Foster vs John Morlan | First | -- |
| Former Cardinal Jack Fournier dies in Tacoma, WA at the age of 84. |
| Friday, September 7 |
| » Lost to Cubs (66-73), 8-2 | Wrigley Field (4-3) | 72-69 | |
| » Starters: Rick Wise vs Burt Hooton | First | -- |
| Saturday, September 8 |
| » Lost to Cubs (67-73), 3-1 | Wrigley Field (4-4) | 72-70 | Lost 2 |
| » Starters: Reggie Cleveland vs Milt Pappas | First | -- |
| Sunday, September 9 |
| » Lost to Cubs (68-73), 5-4 | Wrigley Field (4-5) | 72-71 | Lost 3 |
| » Starters: Mike Nagy vs Fergie Jenkins | First | -- |
| Monday, September 10 |
| » Major-league debuts: Phil Garner (Pirates) |
| Tuesday, September 11 |
| » Lost to Expos (70-73), 4-1 | Busch Stadium II (37-34) | 72-72 | Lost 4 |
| » Starters: Steve Renko vs Alan Foster | First | -- |
| Wednesday, September 12 |
| » Lost to Expos (71-73), 2-1 | Busch Stadium II (37-35) | 72-73 | Lost 5 |
| » Starters: Steve Rogers vs Rick Wise | Second | 1½ out |
| Friday, September 14 |
| » Lost to Pirates (73-71), 3-1 | Busch Stadium II (37-36) | 72-74 | Lost 6 |
| » Starters: Nelson Briles vs Reggie Cleveland | Third | 2 out |
| Saturday, September 15 |
| » Lost to Pirates (74-71), 7-4 | Busch Stadium II (37-37) | 72-75 | Lost 7 |
| » Starters: Jim Rooker vs Mike Nagy | Third | 3 out |
| Sunday, September 16 |
| » Defeated Pirates (74-72), 7-3 | Busch Stadium II (38-37) | 73-75 | |
| » Starters: Steve Blass vs Alan Foster | Third | 2 out |
| Monday, September 17 |
| » Lost to Expos (75-73), 5-4 | Parc Jarry (4-3) | 73-76 | |
| » Starters: Rick Wise vs Steve Rogers | Third | 2½ out |
| » Defeated Expos (75-74), 5-3 | Parc Jarry (5-3) | 74-76 | |
| » Starters: Rich Folkers vs Bill Stoneman | Third | 2½ out |
| Tuesday, September 18 |
| » Defeated Expos (75-75), 7-4 | Parc Jarry (6-3) | 75-76 | Won 2 |
| » Starters: Reggie Cleveland vs Balor Moore | Third | 1½ out |
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