| Wednesday, January 4 |
| Former Red Estel Crabtree dies in Logan, OH at the age of 64. |
| Friday, January 13 |
| Former Red Charley Gelbert dies in Easton, PA at the age of 61. |
| Thursday, January 26 |
| Future Red Jeff Branson is born in Waynesboro, MS. Future Red Tim Pugh is born in South Lake Tahoe, CA. |
| Sunday, February 19 |
| Future Red Keith Kessinger is born in Forrest City, AR. |
| Sunday, February 26 |
| Future Red Scott Service is born in Cincinnati, OH. |
| Monday, March 27 |
| Future Red Candy Sierra is born in Rio Piedras, P.R. |
| Monday, April 10 |
| » Defeated Dodgers (0-1), 6-1 | Crosley Field (1-0) | 1-0 | |
| » Starters: Bob Miller vs Jim Maloney | First | -- |
| Thursday, April 13 |
| » Defeated Astros (2-1), 5-4 | Crosley Field (2-0) | 2-0 | Won 2 |
| » Starters: Dave Giusti vs Milt Pappas | First | -- |
| Former Red Tommy Griffith dies in Cincinnati, OH at the age of 78. |
| Friday, April 14 |
| » Lost to Astros (3-1), 8-2 | Crosley Field (2-1) | 2-1 | |
| » Starters: Don Wilson vs Sammy Ellis | Third | ½ out |
| Saturday, April 15 |
| » Defeated Astros (3-2), 7-3 | Crosley Field (3-1) | 3-1 | |
| » Starters: Chris Zachary vs Gary Nolan | Second | ½ out |
| » Major-league debuts: Gary Nolan (Reds) |
| Sunday, April 16 |
| » Defeated Giants (1-4), 4-1 | Crosley Field (4-1) | 4-1 | Won 2 |
| » Starters: Ron Herbel vs Billy McCool | Second | 1 out |
| » Defeated Giants (1-5), 6-0 | Crosley Field (5-1) | 5-1 | Won 3 |
| » Starters: Mike McCormick vs Mel Queen | Second | 1 out |
| » Major-league debuts: Cesar Gutierrez (Giants) |
| Tuesday, April 18 |
| » Lost to Dodgers (1-4), 7-2 | Dodger Stadium (0-1) | 5-2 | |
| » Starters: Milt Pappas vs Claude Osteen | Second | 1 out |
| Wednesday, April 19 |
| » Lost to Dodgers (2-4), 3-2 | Dodger Stadium (0-2) | 5-3 | Lost 2 |
| » Starters: Sammy Ellis vs Don Sutton | Third | 2 out |
| Thursday, April 20 |
| » Defeated Dodgers (2-5), 3-1 | Dodger Stadium (1-2) | 6-3 | |
| » Starters: Gary Nolan vs Bob Miller | Second | 1 out |
| Friday, April 21 |
| » Defeated Astros (3-6), 3-1 | Astrodome (1-0) | 7-3 | Won 2 |
| » Starters: Billy McCool vs Mike Cuellar | Second | 1½ out |
| Saturday, April 22 |
| » Defeated Astros (3-7), 7-2 | Astrodome (2-0) | 8-3 | Won 3 |
| » Starters: Jim Maloney vs Larry Dierker | Second | 1½ out |
| Sunday, April 23 |
| » Defeated Astros (3-8), 5-3 | Astrodome (3-0) | 9-3 | Won 4 |
| » Starters: Milt Pappas vs Don Wilson | Second | 1½ out |
| Monday, April 24 |
| » Defeated Astros (3-9), 3-1 | Astrodome (4-0) | 10-3 | Won 5 |
| » Starters: Sammy Ellis vs Dave Giusti | First | -- |
| Tuesday, April 25 |
| » Lost to Giants (4-7), 6-1 | Candlestick Park (0-1) | 10-4 | |
| » Starters: Gary Nolan vs Juan Marichal | Second | 1½ out |
| Wednesday, April 26 |
| » Defeated Giants (4-8), 4-2 | Candlestick Park (1-1) | 11-4 | |
| » Starters: Billy McCool vs Bobby Bolin | Second | 1½ out |
| Thursday, April 27 |
| » Defeated Giants (4-9), 3-2 | Candlestick Park (2-1) | 12-4 | Won 2 |
| » Starters: Mel Queen vs Gaylord Perry | First | -- |
| Friday, April 28 |
| » Defeated Mets (5-9), 7-1 | Crosley Field (6-1) | 13-4 | Won 3 |
| » Starters: Bob Shaw vs Sammy Ellis | First | -- |
| Saturday, April 29 |
| » Defeated Mets (5-10), 7-0 | Crosley Field (7-1) | 14-4 | Won 4 |
| » Starters: Bill Denehy vs Gerry Arrigo | First | -- |
| Sunday, April 30 |
| » Lost to Mets (6-10), 2-0 | Crosley Field (7-2) | 14-5 | |
| » Starters: Don Cardwell vs Billy McCool | First | -- |
| » Defeated Mets (6-11), 3-2 | Crosley Field (8-2) | 15-5 | |
| » Starters: Tom Seaver vs Gary Nolan | First | -- |
| Tuesday, May 2 |
| » Lost to Cardinals (10-7), 5-0 | Busch Stadium II (0-1) | 15-6 | |
| » Starters: Jim Maloney vs Bob Gibson | First | -- |
| Wednesday, May 3 |
| » Lost to Cardinals (11-7), 2-0 | Busch Stadium II (0-2) | 15-7 | Lost 2 |
| » Starters: Milt Pappas vs Ray Washburn | First | -- |
| Friday, May 5 |
| » Defeated Braves (11-8), 14-7 | Atlanta-Fulton County Stadium (1-0) | 16-7 | |
| » Starters: Sammy Ellis vs Ken Johnson | First | -- |
| Saturday, May 6 |
| » Defeated Braves (11-9), 4-3 | Atlanta-Fulton County Stadium (2-0) | 17-7 | Won 2 |
| » Starters: Billy McCool vs Bob Bruce | First | -- |
| Sunday, May 7 |
| » Lost to Braves (12-9), 5-3 | Atlanta-Fulton County Stadium (2-1) | 17-8 | |
| » Starters: Jim Maloney vs Pat Jarvis | First | -- |
| Tuesday, May 9 |
| » Lost to Mets (9-13), 3-2 | Shea Stadium (0-1) | 17-9 | Lost 2 |
| » Starters: Gary Nolan vs Jack Fisher | First | -- |
| Wednesday, May 10 |
| » Defeated Mets (9-14), 7-4 | Shea Stadium (1-1) | 18-9 | |
| » Starters: Milt Pappas vs Don Cardwell | First | -- |
| Friday, May 12 |
| » Defeated Phillies (12-12), 4-2 | Crosley Field (9-2) | 19-9 | Won 2 |
| » Starters: Dick Ellsworth vs Sammy Ellis | First | -- |
| Saturday, May 13 |
| » Lost to Phillies (13-12), 3-2 | Crosley Field (9-3) | 19-10 | |
| » Starters: Chris Short vs Billy McCool | First | -- |
| Sunday, May 14 |
| » Defeated Phillies (13-13), 2-1 | Crosley Field (10-3) | 20-10 | |
| » Starters: Larry Jackson vs Jim Maloney | First | -- |
| » Defeated Phillies (13-14), 1-0 | Crosley Field (11-3) | 21-10 | Won 2 |
| » Starters: Jim Bunning vs Gary Nolan | First | -- |
| Monday, May 15 |
| » Defeated Pirates (16-10), 8-7 | Crosley Field (12-3) | 22-10 | Won 3 |
| » Starters: Bob Veale vs Milt Pappas | First | -- |
| Tuesday, May 16 |
| » Defeated Pirates (16-11), 6-3 | Crosley Field (13-3) | 23-10 | Won 4 |
| » Starters: Woodie Fryman vs Mel Queen | First | -- |
| Wednesday, May 17 |
| » Defeated Pirates (16-12), 3-1 | Crosley Field (14-3) | 24-10 | Won 5 |
| » Starters: Tommie Sisk vs Sammy Ellis | First | -- |
| Thursday, May 18 |
| » Lost to Phillies (14-16), 7-1 | Shibe Park (0-1) | 24-11 | |
| » Starters: Billy McCool vs Jim Bunning | First | -- |
| Friday, May 19 |
| » Defeated Phillies (14-17), 6-1 | Shibe Park (1-1) | 25-11 | |
| » Starters: Jim Maloney vs Larry Jackson | First | -- |
| Saturday, May 20 |
| » Defeated Phillies (14-18), 5-2 | Shibe Park (2-1) | 26-11 | Won 2 |
| » Starters: Gary Nolan vs Grant Jackson | First | -- |
| Sunday, May 21 |
| » Lost to Phillies (15-18), 2-1 | Shibe Park (2-2) | 26-12 | |
| » Starters: Milt Pappas vs Chris Short | First | -- |
| Wednesday, May 24 |
| » Defeated Cubs (18-16), 4-3 | Wrigley Field (1-0) | 27-12 | |
| » Starters: Sammy Ellis vs Rich Nye | First | -- |
| » Lost to Cubs (19-16), 4-3 | Wrigley Field (1-1) | 27-13 | |
| » Starters: Billy McCool vs Joe Niekro | First | -- |
| Thursday, May 25 |
| » Lost to Cubs (20-16), 5-4 | Wrigley Field (1-2) | 27-14 | Lost 2 |
| » Starters: Jim Maloney vs Fergie Jenkins | First | -- |
| Friday, May 26 |
| » Lost to Pirates (21-15), 6-5 | Forbes Field (0-1) | 27-15 | Lost 3 |
| » Starters: Gary Nolan vs Bob Veale | First | -- |
| Saturday, May 27 |
| » Defeated Pirates (21-16), 6-1 | Forbes Field (1-1) | 28-15 | |
| » Starters: Milt Pappas vs Juan Pizarro | First | -- |
| Sunday, May 28 |
| » Lost to Pirates (22-16), 3-2 | Forbes Field (1-2) | 28-16 | |
| » Starters: Sammy Ellis vs Tommie Sisk | First | -- |
| Monday, May 29 |
| » Lost to Cardinals (24-14), 2-1 | Crosley Field (14-4) | 28-17 | Lost 2 |
| » Starters: Bob Gibson vs Mel Queen | First | -- |
| » Defeated Cardinals (24-15), 7-6 | Crosley Field (15-4) | 29-17 | |
| » Starters: Al Jackson vs Billy McCool | First | -- |
| Tuesday, May 30 |
| » Defeated Cardinals (24-16), 2-1 | Crosley Field (16-4) | 30-17 | Won 2 |
| » Starters: Dick Hughes vs Jim Maloney | First | -- |
| Wednesday, May 31 |
| » Lost to Cubs (22-19), 6-5 | Crosley Field (16-5) | 30-18 | |
| » Starters: Rich Nye vs Milt Pappas | First | -- |
| Thursday, June 1 |
| » Defeated Cubs (22-20), 7-6 | Crosley Field (17-5) | 31-18 | |
| » Starters: Ray Culp vs Gary Nolan | First | -- |
| Friday, June 2 |
| » Defeated Braves (22-23), 5-4 | Crosley Field (18-5) | 32-18 | Won 2 |
| » Starters: Pat Jarvis vs Sammy Ellis | First | -- |
| Saturday, June 3 |
| » Defeated Braves (22-24), 8-7 | Crosley Field (19-5) | 33-18 | Won 3 |
| » Starters: Bob Bruce vs Billy McCool | First | -- |
| Sunday, June 4 |
| » Defeated Braves (22-25), 5-4 | Crosley Field (20-5) | 34-18 | Won 4 |
| » Starters: Ken Johnson vs Jim Maloney | First | -- |
| Tuesday, June 6 |
| » Defeated Giants (28-21), 3-2 | Crosley Field (21-5) | 35-18 | Won 5 |
| » Starters: Gaylord Perry vs Milt Pappas | First | -- |
| Wednesday, June 7 |
| » Lost to Giants (29-21), 4-3 | Crosley Field (21-6) | 35-19 | |
| » Starters: Juan Marichal vs Gary Nolan | First | -- |
| Thursday, June 8 |
| » Lost to Giants (30-21), 8-5 | Crosley Field (21-7) | 35-20 | Lost 2 |
| » Starters: Bobby Bolin vs Sammy Ellis | First | -- |
| Friday, June 9 |
| » Defeated Astros (20-33), 10-7 | Crosley Field (22-7) | 36-20 | |
| » Starters: Don Wilson vs Jim Maloney | First | -- |
| Saturday, June 10 |
| » Defeated Astros (20-34), 9-4 | Crosley Field (23-7) | 37-20 | Won 2 |
| » Starters: Dave Giusti vs Mel Queen | First | -- |
| Sunday, June 11 |
| » Lost to Astros (21-34), 7-4 | Crosley Field (23-8) | 37-21 | |
| » Starters: Mike Cuellar vs Milt Pappas | First | -- |
| » Defeated Astros (21-35), 8-4 | Crosley Field (24-8) | 38-21 | |
| » Starters: Bo Belinsky vs Sammy Ellis | First | -- |
| Tuesday, June 13 |
| » Defeated Mets (17-35), 6-0 | Shea Stadium (2-1) | 39-21 | Won 2 |
| » Starters: Gary Nolan vs Bill Denehy | First | -- |
| » Lost to Mets (18-35), 7-3 | Shea Stadium (2-2) | 39-22 | |
| » Starters: Billy McCool vs Tom Seaver | First | -- |
| Wednesday, June 14 |
| » Lost to Mets (19-35), 4-0 | Shea Stadium (2-3) | 39-23 | Lost 2 |
| » Starters: Jim Maloney vs Bob Shaw | First | -- |
| Future Red Jerry Spradlin is born in Fullerton, CA. |
| Friday, June 16 |
| » Defeated Dodgers (23-36), 3-2 | Dodger Stadium (2-2) | 40-23 | |
| » Starters: Mel Queen vs Bill Singer | First | -- |
| Saturday, June 17 |
| » Lost to Dodgers (24-36), 6-1 | Dodger Stadium (2-3) | 40-24 | |
| » Starters: Milt Pappas vs Don Drysdale | First | -- |
| Sunday, June 18 |
| » Lost to Dodgers (25-36), 5-3 | Dodger Stadium (2-4) | 40-25 | Lost 2 |
| » Starters: Sammy Ellis vs Claude Osteen | Second | 3½ out |
| Monday, June 19 |
| » Lost to Giants (34-28), 6-3 | Candlestick Park (2-2) | 40-26 | Lost 3 |
| » Starters: Gary Nolan vs Mike McCormick | Second | 3½ out |
| Tuesday, June 20 |
| » Lost to Giants (35-28), 5-1 | Candlestick Park (2-3) | 40-27 | Lost 4 |
| » Starters: Mel Queen vs Juan Marichal | Second | 3½ out |
| Wednesday, June 21 |
| » Defeated Astros (26-41), 3-2 | Astrodome (5-0) | 41-27 | |
| » Starters: Milt Pappas vs Larry Dierker | Second | 3½ out |
| Friday, June 23 |
| » Lost to Pirates (34-29), 4-2 | Crosley Field (24-9) | 41-28 | |
| » Starters: Dennis Ribant vs Sammy Ellis | Second | 3 out |
| Saturday, June 24 |
| » Defeated Pirates (34-30), 6-4 | Crosley Field (25-9) | 42-28 | |
| » Starters: Tommie Sisk vs Gary Nolan | Second | 3 out |
| Sunday, June 25 |
| » Lost to Pirates (35-30), 5-4 | Crosley Field (25-10) | 42-29 | |
| » Starters: Bob Veale vs Milt Pappas | Second | 2½ out |
| Monday, June 26 |
| » Lost to Dodgers (30-39), 3-0 | Crosley Field (25-11) | 42-30 | Lost 2 |
| » Starters: Claude Osteen vs Mel Queen | Second | 3½ out |
| Tuesday, June 27 |
| » Lost to Dodgers (31-39), 9-0 | Crosley Field (25-12) | 42-31 | Lost 3 |
| » Starters: Don Sutton vs Sammy Ellis | Second | 3½ out |
| Wednesday, June 28 |
| » Lost to Dodgers (32-39), 7-5 | Crosley Field (25-13) | 42-32 | Lost 4 |
| » Starters: Bill Singer vs Gary Nolan | Third | 3½ out |
| Thursday, June 29 |
| » Defeated Dodgers (32-40), 14-0 | Crosley Field (26-13) | 43-32 | |
| » Starters: Don Drysdale vs Milt Pappas | Third | 2½ out |
| Friday, June 30 |
| » Lost to Cubs (43-29), 7-5 | Wrigley Field (1-3) | 43-33 | |
| » Starters: Jim Maloney vs Bill Hands | Third | 3½ out |
| Saturday, July 1 |
| » Lost to Cubs (44-29), 6-3 | Wrigley Field (1-4) | 43-34 | Lost 2 |
| » Starters: Mel Queen vs Rich Nye | Third | 3½ out |
| Sunday, July 2 |
| » Lost to Cubs (45-29), 4-1 | Wrigley Field (1-5) | 43-35 | Lost 3 |
| » Starters: Sammy Ellis vs Fergie Jenkins | Second | 4 out |
| Monday, July 3 |
| » Lost to Cardinals (46-29), 7-3 | Busch Stadium II (0-3) | 43-36 | Lost 4 |
| » Starters: Milt Pappas vs Bob Gibson | Second | 5 out |
| Tuesday, July 4 |
| » Defeated Cardinals (46-30), 1-0 | Busch Stadium II (1-3) | 44-36 | |
| » Starters: Gary Nolan vs Larry Jaster | Third | 4 out |
| Wednesday, July 5 |
| » Defeated Cardinals (46-31), 2-1 | Busch Stadium II (2-3) | 45-36 | Won 2 |
| » Starters: Jim Maloney vs Jim Cosman | Third | 3 out |
| Thursday, July 6 |
| » Lost to Cardinals (47-31), 6-5 | Busch Stadium II (2-4) | 45-37 | |
| » Starters: Mel Queen vs Dick Hughes | Third | 4 out |
| Friday, July 7 |
| » Defeated Pirates (38-38), 6-2 | Forbes Field (2-2) | 46-37 | |
| » Starters: Sammy Ellis vs Bob Veale | Third | 4 out |
| Saturday, July 8 |
| » Lost to Pirates (39-38), 6-1 | Forbes Field (2-3) | 46-38 | |
| » Starters: Gerry Arrigo vs Tommie Sisk | Third | 5 out |
| Sunday, July 9 |
| » Lost to Pirates (40-38), 2-1 | Forbes Field (2-4) | 46-39 | Lost 2 |
| » Starters: Gary Nolan vs Dennis Ribant | Fourth | 5 out |
| Thursday, July 13 |
| » Lost to Mets (32-47), 7-3 | Crosley Field (26-14) | 46-40 | Lost 3 |
| » Starters: Bob Hendley vs Sammy Ellis | Fourth | 5 out |
| » Defeated Mets (32-48), 6-3 | Crosley Field (27-14) | 47-40 | |
| » Starters: Bob Shaw vs Jim Maloney | Fourth | 5 out |
| Friday, July 14 |
| » Defeated Mets (32-49), 1-0 | Crosley Field (28-14) | 48-40 | Won 2 |
| » Starters: Jack Fisher vs Gary Nolan | Third | 5 out |
| Saturday, July 15 |
| » Defeated Mets (32-50), 6-1 | Crosley Field (29-14) | 49-40 | Won 3 |
| » Starters: Tom Seaver vs Mel Queen | Third | 4 out |
| Sunday, July 16 |
| » Lost to Phillies (41-42), 8-0 | Crosley Field (29-15) | 49-41 | |
| » Starters: Jim Bunning vs Gerry Arrigo | Third | 3½ out |
| Monday, July 17 |
| » Defeated Phillies (41-43), 8-5 | Crosley Field (30-15) | 50-41 | |
| » Starters: Larry Jackson vs Sammy Ellis | Third | 3½ out |
| Tuesday, July 18 |
| » Defeated Cardinals (52-37), 7-4 | Crosley Field (31-15) | 51-41 | Won 2 |
| » Starters: Steve Carlton vs Jim Maloney | Third | 2½ out |
| Wednesday, July 19 |
| » Lost to Cardinals (53-37), 3-2 | Crosley Field (31-16) | 51-42 | |
| » Starters: Larry Jaster vs Gary Nolan | Third | 3½ out |
| Thursday, July 20 |
| » Lost to Cardinals (54-37), 7-3 | Crosley Field (31-17) | 51-43 | Lost 2 |
| » Starters: Ray Washburn vs Mel Queen | Third | 4½ out |
| Friday, July 21 |
| » Lost to Phillies (44-45), 5-3 | Shibe Park (2-3) | 51-44 | Lost 3 |
| » Starters: Sammy Ellis vs Jim Bunning | Fourth | 4½ out |
| Saturday, July 22 |
| » Lost to Phillies (45-45), 7-2 | Shibe Park (2-4) | 51-45 | Lost 4 |
| » Starters: Jim Maloney vs Rick Wise | Third | 4½ out |
| Sunday, July 23 |
| » Defeated Phillies (45-46), 2-1 | Shibe Park (3-4) | 52-45 | |
| » Starters: Milt Pappas vs Chris Short | Third | 5 out |
| » Major-league debuts: Terry Harmon (Phillies) |
| Tuesday, July 25 |
| » Lost to Braves (50-43), 1-0 | Atlanta-Fulton County Stadium (2-2) | 52-46 | |
| » Starters: Gary Nolan vs Pat Jarvis | Fourth | 5½ out |
| Wednesday, July 26 |
| » Defeated Braves (50-44), 7-1 | Atlanta-Fulton County Stadium (3-2) | 53-46 | |
| » Starters: Mel Queen vs Phil Niekro | Third | 5½ out |
| Thursday, July 27 |
| » Lost to Braves (51-44), 4-1 | Atlanta-Fulton County Stadium (3-3) | 53-47 | |
| » Starters: Sammy Ellis vs Ken Johnson | Fourth | 6 out |
| Friday, July 28 |
| » Lost to Cubs (57-42), 6-2 | Crosley Field (31-18) | 53-48 | Lost 2 |
| » Starters: Fergie Jenkins vs Jim Maloney | Fourth | 7 out |
| Saturday, July 29 |
| » Defeated Cubs (57-43), 4-2 | Crosley Field (32-18) | 54-48 | |
| » Starters: Ray Culp vs Milt Pappas | Third | 7 out |
| Former Red Ray Kolp dies in New Orleans, LA at the age of 73. |
| Sunday, July 30 |
| » Lost to Cubs (58-43), 8-4 | Crosley Field (32-19) | 54-49 | |
| » Starters: Bob Shaw vs Gary Nolan | Third | 7½ out |
| » Defeated Cubs (58-44), 3-2 | Crosley Field (33-19) | 55-49 | |
| » Starters: Joe Niekro vs Gerry Arrigo | Third | 7½ out |
| Monday, July 31 |
| » Lost to Braves (52-47), 5-2 | Crosley Field (33-20) | 55-50 | |
| » Starters: Phil Niekro vs Mel Queen | Fourth | 8½ out |
| Tuesday, August 1 |
| » Defeated Braves (52-48), 2-0 | Crosley Field (34-20) | 56-50 | |
| » Starters: Ken Johnson vs Jim Maloney | Third | 7½ out |
| Wednesday, August 2 |
| » Defeated Braves (52-49), 7-3 | Crosley Field (35-20) | 57-50 | Won 2 |
| » Starters: Denny Lemaster vs Milt Pappas | Third | 8 out |
| Friday, August 4 |
| » Lost to Cardinals (65-41), 5-0 | Busch Stadium II (2-5) | 57-51 | |
| » Starters: Gary Nolan vs Larry Jaster | Fourth | 9 out |
| Saturday, August 5 |
| » Lost to Cardinals (66-41), 4-3 | Busch Stadium II (2-6) | 57-52 | Lost 2 |
| » Starters: Mel Queen vs Ray Washburn | Fifth | 10 out |
| Sunday, August 6 |
| » Lost to Cardinals (67-41), 3-2 | Busch Stadium II (2-7) | 57-53 | Lost 3 |
| » Starters: Jim Maloney vs Nelson Briles | Fifth | 11 out |
| Tuesday, August 8 |
| » Defeated Astros (47-64), 5-0 | Crosley Field (36-20) | 58-53 | |
| » Starters: Mike Cuellar vs Milt Pappas | Fifth | 9½ out |
| Wednesday, August 9 |
| » Defeated Astros (47-65), 7-3 | Crosley Field (37-20) | 59-53 | Won 2 |
| » Starters: Bo Belinsky vs Gary Nolan | Fourth | 9½ out |
| Future Red Deion Sanders is born in Fort Myers, FL. |
| Thursday, August 10 |
| » Defeated Dodgers (49-61), 5-4 | Crosley Field (38-20) | 60-53 | Won 3 |
| » Starters: Claude Osteen vs Mel Queen | Fourth | 8½ out |
| Friday, August 11 |
| » Lost to Dodgers (50-61), 5-0 | Crosley Field (38-21) | 60-54 | |
| » Starters: Jim Brewer vs Jim Maloney | Fifth | 9½ out |
| Saturday, August 12 |
| » Defeated Dodgers (50-62), 4-0 | Crosley Field (39-21) | 61-54 | |
| » Starters: Phil Regan vs Milt Pappas | Fourth | 9½ out |
| Sunday, August 13 |
| » Defeated Dodgers (50-63), 3-0 | Crosley Field (40-21) | 62-54 | Won 2 |
| » Starters: Don Drysdale vs Sammy Ellis | Fourth | 9½ out |
| Monday, August 14 |
| » Lost to Pirates (55-60), 4-3 | Forbes Field (2-5) | 62-55 | |
| » Starters: Gary Nolan vs Bob Veale | Fourth | 10½ out |
| Tuesday, August 15 |
| » Defeated Pirates (55-61), 2-1 | Forbes Field (3-5) | 63-55 | |
| » Starters: Mel Queen vs Tommie Sisk | Third | 10½ out |
| Wednesday, August 16 |
| » Defeated Pirates (55-62), 4-0 | Forbes Field (4-5) | 64-55 | Won 2 |
| » Starters: Jim Maloney vs Woodie Fryman | Third | 10½ out |
| Friday, August 18 |
| » Lost to Giants (63-56), 3-1 | Candlestick Park (2-4) | 64-56 | |
| » Starters: Milt Pappas vs Ray Sadecki | Third | 11½ out |
| Saturday, August 19 |
| » Defeated Giants (63-57), 3-1 | Candlestick Park (3-4) | 65-56 | |
| » Starters: Gary Nolan vs Mike McCormick | Second | 11½ out |
| Sunday, August 20 |
| » Lost to Giants (64-57), 3-2 | Candlestick Park (3-5) | 65-57 | |
| » Starters: Mel Queen vs Gaylord Perry | Second | 11½ out |
| Monday, August 21 |
| » Defeated Giants (64-58), 2-0 | Candlestick Park (4-5) | 66-57 | |
| » Starters: Jim Maloney vs Ron Herbel | Second | 10½ out |
| Tuesday, August 22 |
| » Defeated Dodgers (55-66), 4-1 | Dodger Stadium (3-4) | 67-57 | Won 2 |
| » Starters: Milt Pappas vs Don Drysdale | Second | 10½ out |
| Wednesday, August 23 |
| » Lost to Dodgers (56-66), 8-0 | Dodger Stadium (3-5) | 67-58 | |
| » Starters: Sammy Ellis vs Claude Osteen | Second | 10½ out |
| Thursday, August 24 |
| » Lost to Dodgers (57-66), 4-3 | Dodger Stadium (3-6) | 67-59 | Lost 2 |
| » Starters: Gary Nolan vs Don Sutton | Second | 11½ out |
| Friday, August 25 |
| » Defeated Astros (53-75), 2-1 | Astrodome (6-0) | 68-59 | |
| » Starters: Mel Queen vs Don Wilson | Second | 11 out |
| Saturday, August 26 |
| » Defeated Astros (53-76), 6-1 | Astrodome (7-0) | 69-59 | Won 2 |
| » Starters: Jim Maloney vs Wade Blasingame | Second | 10½ out |
| » Lost to Astros (54-76), 8-6 | Astrodome (7-1) | 69-60 | |
| » Starters: Milt Pappas vs Mike Cuellar | Second | 10½ out |
| Sunday, August 27 |
| » Defeated Astros (54-77), 11-8 | Astrodome (8-1) | 70-60 | |
| » Starters: Sammy Ellis vs Dave Giusti | Second | 10½ out |
| Monday, August 28 |
| » Lost to Phillies (68-59), 3-2 | Crosley Field (40-22) | 70-61 | |
| » Starters: Dick Ellsworth vs Gerry Arrigo | Third | 11 out |
| » Major-league debuts: Johnny Bench (Reds) |
| Future Red Darren Lewis is born in Berkeley, CA. |
| Tuesday, August 29 |
| » Defeated Phillies (68-60), 1-0 | Crosley Field (41-22) | 71-61 | |
| » Starters: Jim Bunning vs Gary Nolan | Second | 10 out |
| Wednesday, August 30 |
| » Defeated Phillies (68-61), 2-1 | Crosley Field (42-22) | 72-61 | Won 2 |
| » Starters: Chris Short vs Milt Pappas | Second | 10 out |
| Thursday, August 31 |
| » Defeated Giants (70-64), 3-1 | Crosley Field (43-22) | 73-61 | Won 3 |
| » Starters: Mike McCormick vs Jim Maloney | Second | 10 out |
| Friday, September 1 |
| » Lost to Giants (71-64), 1-0 | Crosley Field (43-23) | 73-62 | |
| » Starters: Gaylord Perry vs Mel Queen | Second | 11 out |
| Saturday, September 2 |
| » Lost to Giants (72-64), 4-3 | Crosley Field (43-24) | 73-63 | Lost 2 |
| » Starters: Ron Herbel vs Sammy Ellis | Second | 12 out |
| Sunday, September 3 |
| » Lost to Giants (73-64), 4-0 | Crosley Field (43-25) | 73-64 | Lost 3 |
| » Starters: Ray Sadecki vs Milt Pappas | Third | 13 out |
| Monday, September 4 |
| » Defeated Mets (53-84), 2-1 | Crosley Field (44-25) | 74-64 | |
| » Starters: Tom Seaver vs Gary Nolan | Third | 11½ out |
| Former Red Clyde Manion dies in Detroit, MI at the age of 71. |
| Wednesday, September 6 |
| » Lost to Phillies (71-66), 9-0 | Shibe Park (3-5) | 74-65 | |
| » Starters: Jim Maloney vs Jim Bunning | Fourth | 12½ out |
| Thursday, September 7 |
| » Defeated Phillies (71-67), 3-1 | Shibe Park (4-5) | 75-65 | |
| » Starters: Milt Pappas vs Chris Short | Fourth | 12½ out |
| Friday, September 8 |
| » Defeated Mets (53-87), 3-0 | Shea Stadium (3-3) | 76-65 | Won 2 |
| » Starters: Mel Queen vs Danny Frisella | Fourth | 12 out |
| » Lost to Mets (54-87), 5-4 | Shea Stadium (3-4) | 76-66 | |
| » Starters: Sammy Ellis vs Tom Seaver | Fourth | 12 out |
| Saturday, September 9 |
| » Defeated Mets (54-88), 2-0 | Shea Stadium (4-4) | 77-66 | |
| » Starters: Gary Nolan vs Bill Graham | Fourth | 12 out |
| Sunday, September 10 |
| » Defeated Mets (54-89), 5-2 | Shea Stadium (5-4) | 78-66 | Won 2 |
| » Starters: Jim Maloney vs Tug McGraw | Third | 11 out |
| Monday, September 11 |
| » Defeated Pirates (72-73), 4-3 | Crosley Field (45-25) | 79-66 | Won 3 |
| » Starters: Al McBean vs Milt Pappas | Third | 11 out |
| Tuesday, September 12 |
| » Defeated Pirates (72-74), 15-7 | Crosley Field (46-25) | 80-66 | Won 4 |
| » Starters: Bob Veale vs Bob Lee | Third | 11 out |
| Wednesday, September 13 |
| » Lost to Pirates (73-74), 11-3 | Crosley Field (46-26) | 80-67 | |
| » Starters: Tommie Sisk vs Mel Queen | Third | 11 out |
| Friday, September 15 |
| » Lost to Cardinals (92-56), 4-0 | Crosley Field (46-27) | 80-68 | Lost 2 |
| » Starters: Steve Carlton vs Gary Nolan | Third | 12 out |
| Saturday, September 16 |
| » Lost to Cardinals (93-56), 4-1 | Crosley Field (46-28) | 80-69 | Lost 3 |
| » Starters: Ray Washburn vs Milt Pappas | Third | 13 out |
| Sunday, September 17 |
| » Lost to Cardinals (94-56), 3-2 | Crosley Field (46-29) | 80-70 | Lost 4 |
| » Starters: Nelson Briles vs Jim Maloney | Fourth | 14 out |
| Former Red Karl Adams dies in Everett, WA at the age of 77. |
| Monday, September 18 |
| » Defeated Braves (74-76), 4-0 | Atlanta-Fulton County Stadium (4-3) | 81-70 | |
| » Starters: Mel Queen vs Pat Jarvis | Fourth | 14 out |
| Tuesday, September 19 |
| » Defeated Braves (74-77), 3-1 | Atlanta-Fulton County Stadium (5-3) | 82-70 | Won 2 |
| » Starters: Gary Nolan vs Phil Niekro | Third | 14 out |
| Wednesday, September 20 |
| » Defeated Braves (74-78), 9-4 | Atlanta-Fulton County Stadium (6-3) | 83-70 | Won 3 |
| » Starters: Milt Pappas vs Jim Britton | Third | 13 out |
| » Major-league debuts: Jim Britton (Braves) |
| Friday, September 22 |
| » Lost to Cubs (83-72), 3-2 | Wrigley Field (1-6) | 83-71 | |
| » Starters: Jim Maloney vs Joe Niekro | Third | 13½ out |
| Saturday, September 23 |
| » Lost to Cubs (84-72), 6-3 | Wrigley Field (1-7) | 83-72 | Lost 2 |
| » Starters: Mel Queen vs Fergie Jenkins | Fourth | 13½ out |
| Sunday, September 24 |
| » Defeated Cubs (84-73), 3-2 | Wrigley Field (2-7) | 84-72 | |
| » Starters: Gary Nolan vs Rich Nye | Third | 13½ out |
| Monday, September 25 |
| Former Red Phil Geier dies in Spokane, WA at the age of 92. |
| Tuesday, September 26 |
| » Lost to Braves (77-80), 4-3 | Crosley Field (46-30) | 84-73 | |
| » Starters: Ron Reed vs Milt Pappas | Fourth | 13½ out |
| Thursday, September 28 |
| » Defeated Braves |
