| Thursday, January 10 |
| Former Red Hughie Critz dies in Greenwood, MS at the age of 80. |
| Sunday, January 13 |
| Former Red Monty Swartz dies in Germantown, OH at the age of 84. |
| Friday, March 14 |
| Former Red Al Wickland dies in Port Washington, WI at the age of 93. |
| Monday, March 17 |
| Former Red Bob Hooper dies in New Brunswick, NJ at the age of 58. |
| Wednesday, April 9 |
| » Defeated Braves (0-1), 9-0 | Riverfront Stadium (1-0) | 1-0 | |
| » W: Frank Pastore (1-0) L: Phil Niekro (0-1) | First | -- |
| Friday, April 11 |
| » Defeated Braves (0-2), 6-0 | Riverfront Stadium (2-0) | 2-0 | Won 2 |
| » W: Mike LaCoss (1-0) L: Larry McWilliams (0-1) | First | -- |
| Saturday, April 12 |
| » Defeated Braves (0-3), 5-4 | Riverfront Stadium (3-0) | 3-0 | Won 3 |
| » W: Tom Hume (1-0) L: Al Hrabosky (0-1) | First | -- |
| Sunday, April 13 |
| » Defeated Braves (0-4), 5-0 | Riverfront Stadium (4-0) | 4-0 | Won 4 |
| » W: Charlie Leibrandt (1-0) L: Phil Niekro (0-2) | First | -- |
| Monday, April 14 |
| » Defeated Giants (1-4), 6-5 | Riverfront Stadium (5-0) | 5-0 | Won 5 |
| » W: Dave Tomlin (1-0) L: Gary Lavelle (0-2) | First | -- |
| Tuesday, April 15 |
| » Defeated Giants (1-5), 8-3 | Riverfront Stadium (6-0) | 6-0 | Won 6 |
| » W: Tom Seaver (1-0) L: Ed Whitson (0-1) S: Tom Hume (1) | First | -- |
| Wednesday, April 16 |
| » Defeated Giants (1-6), 5-3 | Riverfront Stadium (7-0) | 7-0 | Won 7 |
| » W: Mike LaCoss (2-0) L: John Montefusco (0-2) | First | -- |
| Thursday, April 17 |
| » Defeated Braves (0-7), 4-1 | Atlanta-Fulton County Stadium (1-0) | 8-0 | Won 8 |
| » W: Frank Pastore (2-0) L: Phil Niekro (0-3) | First | -- |
| Friday, April 18 |
| » Lost to Braves (1-7), 3-0 | Atlanta-Fulton County Stadium (1-1) | 8-1 | |
| » W: Rick Matula (1-0) L: Charlie Leibrandt (1-1) | First | -- |
| Saturday, April 19 |
| » Defeated Braves (1-8), 6-1 | Atlanta-Fulton County Stadium (2-1) | 9-1 | |
| » W: Bill Bonham (1-0) L: Doyle Alexander (0-1) | First | -- |
| Sunday, April 20 |
| » Defeated Braves (1-9), 5-3 | Atlanta-Fulton County Stadium (3-1) | 10-1 | Won 2 |
| » W: Dave Tomlin (2-0) L: Larry Bradford (0-1) S: Tom Hume (2) | First | -- |
| Monday, April 21 |
| » Defeated Astros (7-4), 6-5 | Astrodome (1-0) | 11-1 | Won 3 |
| » W: Mike LaCoss (3-0) L: Vern Ruhle (0-1) S: Tom Hume (3) | First | -- |
| Tuesday, April 22 |
| » Lost to Astros (8-4), 8-0 | Astrodome (1-1) | 11-2 | |
| » W: Nolan Ryan (1-0) L: Frank Pastore (2-1) | First | -- |
| Wednesday, April 23 |
| » Defeated Astros (8-5), 3-2 | Astrodome (2-1) | 12-2 | |
| » W: Tom Hume (2-0) L: Joaquin Andujar (0-1) S: Doug Bair (1) | First | -- |
| Friday, April 25 |
| » Lost to Giants (5-11), 4-3 | Candlestick Park (0-1) | 12-3 | |
| » W: Greg Minton (1-0) L: Doug Bair (0-1) | First | -- |
| Saturday, April 26 |
| » Lost to Giants (6-11), 3-1 | Candlestick Park (0-2) | 12-4 | Lost 2 |
| » W: Bob Knepper (2-2) L: Mike LaCoss (3-1) | First | -- |
| Sunday, April 27 |
| » Defeated Giants (6-12), 3-1 | Candlestick Park (1-2) | 13-4 | |
| » W: Frank Pastore (3-1) L: Ed Whitson (0-4) | First | -- |
| Former Red Rube Ehrhardt dies in Chicago Heights, IL at the age of 86. |
| Tuesday, April 29 |
| » Lost to Astros (12-5), 3-0 | Riverfront Stadium (7-1) | 13-5 | |
| » W: Ken Forsch (3-0) L: Charlie Leibrandt (1-2) | First | -- |
| Wednesday, April 30 |
| » Lost to Astros (13-5), 5-1 | Riverfront Stadium (7-2) | 13-6 | Lost 2 |
| » W: J.R. Richard (4-0) L: Tom Seaver (1-1) | Second | ½ out |
| Thursday, May 1 |
| » Lost to Astros (14-5), 9-3 | Riverfront Stadium (7-3) | 13-7 | Lost 3 |
| » W: Joe Niekro (3-1) L: Mike LaCoss (3-2) | Second | 1½ out |
| Friday, May 2 |
| » Lost to Cubs (10-6), 12-4 | Riverfront Stadium (7-4) | 13-8 | Lost 4 |
| » W: Bruce Sutter (2-1) L: Tom Hume (2-1) | Second | 1½ out |
| Saturday, May 3 |
| » Lost to Cubs (11-6), 7-1 | Riverfront Stadium (7-5) | 13-9 | Lost 5 |
| » W: Mike Krukow (2-1) L: Bill Bonham (1-1) | Second | 2½ out |
| Sunday, May 4 |
| » Defeated Cubs (11-7), 3-2 | Riverfront Stadium (8-5) | 14-9 | |
| » W: Charlie Leibrandt (2-2) L: Rick Reuschel (2-2) S: Tom Hume (4) | Second | 2 out |
| » Defeated Cubs (11-8), 5-4 | Riverfront Stadium (9-5) | 15-9 | Won 2 |
| » W: Paul Moskau (1-0) L: Bill Caudill (0-1) S: Doug Bair (2) | Second | 2 out |
| Monday, May 5 |
| » Lost to Mets (8-14), 3-2 | Shea Stadium (0-1) | 15-10 | |
| » W: Jeff Reardon (1-1) L: Doug Bair (0-2) | Third | 2 out |
| Tuesday, May 6 |
| » Defeated Mets (8-15), 12-10 | Shea Stadium (1-1) | 16-10 | |
| » W: Dave Tomlin (3-0) L: Jeff Reardon (1-2) S: Paul Moskau (1) | Second | 2 out |
| Wednesday, May 7 |
| » Defeated Mets (8-16), 3-2 | Shea Stadium (2-1) | 17-10 | Won 2 |
| » W: Tom Hume (3-1) L: Pat Zachry (0-1) | Second | 1 out |
| Friday, May 9 |
| » Defeated Phillies (11-11), 5-2 | Riverfront Stadium (10-5) | 18-10 | Won 3 |
| » W: Charlie Leibrandt (3-2) L: Randy Lerch (0-4) | Second | 1 out |
| Saturday, May 10 |
| » Defeated Phillies (11-12), 5-3 | Riverfront Stadium (11-5) | 19-10 | Won 4 |
| » W: Tom Seaver (2-1) L: Steve Carlton (5-2) S: Tom Hume (5) | Second | 1 out |
| Sunday, May 11 |
| » Lost to Phillies (12-12), 7-3 | Riverfront Stadium (11-6) | 19-11 | |
| » W: Dick Ruthven (3-2) L: Mike LaCoss (3-3) | Second | 1 out |
| Tuesday, May 13 |
| » Defeated Mets (9-18), 15-4 | Riverfront Stadium (12-6) | 20-11 | |
| » W: Frank Pastore (4-1) L: Ray Burris (2-3) S: Paul Moskau (2) | First | -- |
| Wednesday, May 14 |
| » Lost to Mets (10-18), 7-6 | Riverfront Stadium (12-7) | 20-12 | |
| » W: Jeff Reardon (2-2) L: Tom Hume (3-2) | First | -- |
| Friday, May 16 |
| » Lost to Expos (14-15), 2-1 | Stade Olympique (0-1) | 20-13 | Lost 2 |
| » W: Steve Rogers (3-4) L: Tom Seaver (2-2) S: Woodie Fryman (6) | First | -- |
| Saturday, May 17 |
| » Lost to Expos (15-15), 9-6 | Stade Olympique (0-2) | 20-14 | Lost 3 |
| » W: Stan Bahnsen (3-1) L: Tom Hume (3-3) S: Elias Sosa (3) | Second | ½ out |
| Monday, May 19 |
| » Lost to Phillies (16-14), 6-4 | Veteran's Stadium (0-1) | 20-15 | Lost 4 |
| » W: Steve Carlton (7-2) L: Frank Pastore (4-2) S: Ron Reed (1) | Third | 2 out |
| Tuesday, May 20 |
| » Defeated Phillies (16-15), 7-6 | Veteran's Stadium (1-1) | 21-15 | |
| » W: Paul Moskau (2-0) L: Dick Ruthven (4-3) S: Doug Bair (3) | Third | 2 out |
| Future Red Austin Kearns is born in Lexington, KY. |
| Wednesday, May 21 |
| » Lost to Phillies (17-15), 9-8 | Veteran's Stadium (1-2) | 21-16 | |
| » W: Ron Reed (2-0) L: Tom Hume (3-4) | Third | 3 out |
| Friday, May 23 |
| » Lost to Expos (18-16), 7-4 | Riverfront Stadium (12-8) | 21-17 | Lost 2 |
| » W: Bill Lee (2-3) L: Mike LaCoss (3-4) | Third | 3 out |
| Saturday, May 24 |
| » Defeated Expos (18-17), 2-0 | Riverfront Stadium (13-8) | 22-17 | |
| » W: Frank Pastore (5-2) L: David Palmer (3-1) | Second | 3 out |
| Sunday, May 25 |
| » Lost to Expos (19-17), 7-4 | Riverfront Stadium (13-9) | 22-18 | |
| » W: Scott Sanderson (4-3) L: Charlie Leibrandt (3-3) S: Stan Bahnsen (1) | Second | 3 out |
| Monday, May 26 |
| » Lost to Dodgers (26-15), 4-0 | Riverfront Stadium (13-10) | 22-19 | Lost 2 |
| » W: Jerry Reuss (6-0) L: Tom Seaver (2-3) | Third | 3 out |
| » Defeated Dodgers (26-16), 5-4 | Riverfront Stadium (14-10) | 23-19 | |
| » W: Paul Moskau (3-0) L: Dave Goltz (3-3) S: Doug Bair (4) | Third | 3 out |
| Tuesday, May 27 |
| » Defeated Dodgers (26-17), 6-1 | Riverfront Stadium (15-10) | 24-19 | Won 2 |
| » W: Mike LaCoss (4-4) L: Don Sutton (4-2) | Third | 2 out |
| Thursday, May 29 |
| » Defeated Padres (22-23), 5-3 | San Diego/Jack Murphy Stadium (1-0) | 25-19 | Won 3 |
| » W: Frank Pastore (6-2) L: Randy Jones (4-3) S: Tom Hume (6) | Third | 2 out |
| Friday, May 30 |
| » Defeated Padres (22-24), 5-3 | San Diego/Jack Murphy Stadium (2-0) | 26-19 | Won 4 |
| » W: Charlie Leibrandt (4-3) L: Steve Mura (0-1) S: Doug Bair (5) | Second | 2 out |
| Saturday, May 31 |
| » Lost to Padres (23-24), 7-5 | San Diego/Jack Murphy Stadium (2-1) | 26-20 | |
| » W: Bob Shirley (5-1) L: Tom Hume (3-5) S: Rollie Fingers (6) | Third | 2 out |
| Sunday, June 1 |
| » Defeated Padres (23-25), 7-6 | San Diego/Jack Murphy Stadium (3-1) | 27-20 | |
| » W: Sheldon Burnside (1-0) L: Gary Lucas (2-2) S: Tom Hume (7) | Second | 1 out |
| Former Red Rube Marquard dies in Baltimore, MD at the age of 94. |
| Monday, June 2 |
| » Lost to Dodgers (29-19), 3-2 | Dodger Stadium (0-1) | 27-21 | |
| » W: Rick Sutcliffe (1-2) L: Doug Bair (0-3) | Second | 2 out |
| Tuesday, June 3 |
| » Lost to Dodgers (30-19), 5-1 | Dodger Stadium (0-2) | 27-22 | Lost 2 |
| » W: Bob Welch (6-1) L: Tom Seaver (2-4) S: Steve Howe (6) | Third | 3 out |
| Wednesday, June 4 |
| » Defeated Dodgers (30-20), 5-4 | Dodger Stadium (1-2) | 28-22 | |
| » W: Paul Moskau (4-0) L: Charlie Hough (0-3) S: Tom Hume (8) | Third | 2 out |
| Friday, June 6 |
| » Defeated Padres (24-28), 4-2 | Riverfront Stadium (16-10) | 29-22 | Won 2 |
| » W: Frank Pastore (7-2) L: John D'Acquisto (0-1) S: Tom Hume (9) | Third | 2 out |
| Future Red Matt Belisle is born in Mccallum, TX. |
| Saturday, June 7 |
| » Lost to Padres (25-28), 6-1 | Riverfront Stadium (16-11) | 29-23 | |
| » W: Gary Lucas (3-2) L: Mike LaCoss (4-5) S: Rollie Fingers (7) | Third | 2 out |
| Sunday, June 8 |
| » Defeated Padres (25-29), 1-0 | Riverfront Stadium (17-11) | 30-23 | |
| » W: Charlie Leibrandt (5-3) L: Randy Jones (4-5) | Third | 2 out |
| Monday, June 9 |
| » Tied Padres, 6-6 | Riverfront Stadium (17-11) | 30-23 | |
| » Starters: Steve Mura vs Paul Moskau | Third | 2 out |
| Tuesday, June 10 |
| » Lost to Pirates (30-22), 5-3 | Riverfront Stadium (17-12) | 30-24 | |
| » W: John Candelaria (3-5) L: Mario Soto (0-1) S: Kent Tekulve (8) | Third | 2½ out |
| Wednesday, June 11 |
| » Defeated Pirates (30-23), 3-2 | Riverfront Stadium (18-12) | 31-24 | |
| » W: Frank Pastore (8-2) L: Bert Blyleven (1-6) | Third | 2½ out |
| Thursday, June 12 |
| » Lost to Pirates (31-23), 10-6 | Riverfront Stadium (18-13) | 31-25 | |
| » W: Jim Bibby (7-1) L: Mike LaCoss (4-6) S: Enrique Romo (3) | Third | 3 out |
| Friday, June 13 |
| » Defeated Cardinals (20-36), 5-2 | Busch Stadium II (1-0) | 32-25 | |
| » W: Charlie Leibrandt (6-3) L: Pete Vuckovich (5-5) S: Tom Hume (10) | Second | 2 out |
| Saturday, June 14 |
| » Lost to Cardinals (21-36), 4-3 | Busch Stadium II (1-1) | 32-26 | |
| » W: John Littlefield (2-0) L: Mario Soto (0-2) | Third | 3 out |
| » Major-league debuts: Joe Price (Reds) |
| Sunday, June 15 |
| » Lost to Cardinals (22-36), 10-9 | Busch Stadium II (1-2) | 32-27 | Lost 2 |
| » W: Roy Thomas (2-3) L: Paul Moskau (4-1) | Third | 3 out |
| Monday, June 16 |
| » Lost to Pirates (34-24), 5-3 | Three Rivers Stadium (0-1) | 32-28 | Lost 3 |
| » W: Bert Blyleven (2-6) L: Frank Pastore (8-3) S: Grant Jackson (2) | Third | 4 out |
| Tuesday, June 17 |
| » Defeated Pirates (34-25), 4-3 | Three Rivers Stadium (1-1) | 33-28 | |
| » W: Paul Moskau (5-1) L: Enrique Romo (3-2) | Third | 4 out |
| Wednesday, June 18 |
| » Lost to Cubs (25-32), 7-0 | Wrigley Field (0-1) | 33-29 | |
| » W: Dennis Lamp (6-6) L: Charlie Leibrandt (6-4) S: Bruce Sutter (14) | Third | 5 out |
| Thursday, June 19 |
| » Lost to Cubs (26-32), 5-2 | Wrigley Field (0-2) | 33-30 | Lost 2 |
| » W: Mike Krukow (5-7) L: Tom Hume (3-6) S: Bruce Sutter (15) | Third | 6 out |
| Friday, June 20 |
| » Lost to Cardinals (24-39), 7-5 | Riverfront Stadium (18-14) | 33-31 | Lost 3 |
| » W: Kim Seaman (1-0) L: Tom Hume (3-7) S: John Littlefield (1) | Third | 7 out |
| Saturday, June 21 |
| » Defeated Cardinals (24-40), 8-5 | Riverfront Stadium (19-14) | 34-31 | |
| » W: Frank Pastore (9-3) L: John Littlefield (2-1) | Third | 7 out |
| Sunday, June 22 |
| » Lost to Cardinals (25-40), 12-2 | Riverfront Stadium (19-15) | 34-32 | |
| » W: Pete Vuckovich (7-5) L: Mike LaCoss (4-7) | Third | 7 out |
| Tuesday, June 24 |
| » Defeated Braves (28-37), 8-2 | Riverfront Stadium (20-15) | 35-32 | |
| » W: Charlie Leibrandt (7-4) L: Larry McWilliams (3-5) | Third | 6½ out |
| Wednesday, June 25 |
| » Defeated Braves (28-38), 15-3 | Riverfront Stadium (21-15) | 36-32 | Won 2 |
| » W: Tom Seaver (3-4) L: Rick Matula (5-6) | Third | 5½ out |
| Friday, June 27 |
| » Lost to Astros (42-26), 5-4 | Astrodome (2-2) | 36-33 | |
| » W: Joe Niekro (8-6) L: Frank Pastore (9-4) S: Joe Sambito (9) | Third | 6½ out |
| Saturday, June 28 |
| » Defeated Astros (42-27), 8-5 | Astrodome (3-2) | 37-33 | |
| » W: Joe Price (1-0) L: J.R. Richard (9-4) S: Tom Hume (11) | Third | 5½ out |
| Sunday, June 29 |
| » Lost to Astros (43-27), 12-10 | Astrodome (3-3) | 37-34 | |
| » W: Frank LaCorte (5-0) L: Mario Soto (0-3) S: Joe Sambito (10) | Third | 6½ out |
| Monday, June 30 |
| » Lost to Giants (34-40), 8-4 | Candlestick Park (1-3) | 37-35 | Lost 2 |
| » W: Bill Bordley (1-0) L: Tom Seaver (3-5) S: Gary Lavelle (3) | Third | 6½ out |
| » Major-league debuts: Bill Bordley (Giants) |
| Tuesday, July 1 |
| » Lost to Giants (35-40), 4-1 | Candlestick Park (1-4) | 37-36 | Lost 3 |
| » W: Ed Whitson (7-7) L: Paul Moskau (5-2) | Third | 6½ out |
| Wednesday, July 2 |
| » Defeated Giants (35-41), 6-2 | Candlestick Park (2-4) | 38-36 | |
| » W: Frank Pastore (10-4) L: John Montefusco (3-6) | Third | 5½ out |
| Thursday, July 3 |
| » Lost to Giants (36-41), 4-3 | Candlestick Park (2-5) | 38-37 | |
| » W: Bob Knepper (7-9) L: Joe Price (1-1) S: Greg Minton (6) | Third | 6½ out |
| Friday, July 4 |
| » Defeated Astros (44-31), 8-1 | Riverfront Stadium (22-15) | 39-37 | |
| » W: Charlie Leibrandt (8-4) L: Nolan Ryan (5-6) | Third | 5½ out |
| Saturday, July 5 |
| » Defeated Astros (44-32), 8-6 | Riverfront Stadium (23-15) | 40-37 | Won 2 |
| » W: Mario Soto (1-3) L: Ken Forsch (8-7) | Third | 4½ out |
| » Defeated Astros (44-33), 3-2 | Riverfront Stadium (24-15) | 41-37 | Won 3 |
| » W: Mike LaCoss (5-7) L: Joaquin Andujar (0-4) S: Tom Hume (12) | Third | 4½ out |
| » Major-league debuts: Bruce Berenyi (Reds) |
| Sunday, July 6 |
| » Lost to Astros (45-33), 3-2 | Riverfront Stadium (24-16) | 41-38 | |
| » W: Joe Niekro (9-7) L: Frank Pastore (10-5) S: Frank LaCorte (8) | Third | 4½ out |
| Thursday, July 10 |
| » Defeated Braves (37-41), 8-6 | Atlanta-Fulton County Stadium (4-1) | 42-38 | |
| » W: Paul Moskau (6-2) L: Phil Niekro (6-11) | Third | 4½ out |
| Friday, July 11 |
| » Defeated Braves (37-42), 5-3 | Atlanta-Fulton County Stadium (5-1) | 43-38 | Won 2 |
| » W: Mario Soto (2-3) L: Doyle Alexander (7-4) S: Tom Hume (13) | Third | 4½ out |
| Saturday, July 12 |
| » Lost to Giants (40-43), 7-4 | Riverfront Stadium (24-17) | 43-39 | |
| » W: Gary Lavelle (2-5) L: Doug Bair (0-4) S: Greg Minton (7) | Third | 5 out |
| » Lost to Giants (41-43), 10-7 | Riverfront Stadium (24-18) | 43-40 | Lost 2 |
| » W: Bill Bordley (2-0) L: Mike LaCoss (5-8) S: Greg Minton (8) | Third | 5 out |
| Sunday, July 13 |
| » Lost to Giants (42-43), 2-0 | Riverfront Stadium (24-19) | 43-41 | Lost 3 |
| » W: Allen Ripley (3-4) L: Joe Price (1-2) S: Al Holland (3) | Third | 5½ out |
| Monday, July 14 |
| » Lost to Giants (43-43), 5-3 | Riverfront Stadium (24-20) | 43-42 | Lost 4 |
| » W: Alan Hargesheimer (1-0) L: Charlie Leibrandt (8-5) S: Gary Lavelle (4) | Third | 5½ out |
| » Major-league debuts: Alan Hargesheimer (Giants) |
| Tuesday, July 15 |
| » Defeated Expos (45-37), 11-7 | Riverfront Stadium (25-20) | 44-42 | |
| » W: Paul Moskau (7-2) L: David Palmer (6-3) | Third | 5½ out |
| Wednesday, July 16 |
| » Lost to Expos (46-37), 6-4 | Riverfront Stadium (25-21) | 44-43 | |
| » W: Steve Rogers (11-6) L: Mario Soto (2-4) S: Stan Bahnsen (2) | Third | 5½ out |
| Thursday, July 17 |
| » Lost to Expos (47-37), 6-1 | Riverfront Stadium (25-22) | 44-44 | Lost 2 |
| » W: Scott Sanderson (9-5) L: Mike LaCoss (5-9) | Third | 6 out |
| Friday, July 18 |
| » Defeated Mets (43-44), 5-3 | Riverfront Stadium (26-22) | 45-44 | |
| » W: Mario Soto (3-4) L: Pete Falcone (5-6) | Third | 4½ out |
| » Defeated Mets (43-45), 8-3 | Riverfront Stadium (27-22) | 46-44 | Won 2 |
| » W: Bruce Berenyi (1-0) L: Mark Bomback (6-3) S: Tom Hume (14) | Third | 4½ out |
| Saturday, July 19 |
| » Lost to Mets (44-45), 13-3 | Riverfront Stadium (27-23) | 46-45 | |
| » W: Roy Lee Jackson (1-0) L: Charlie Leibrandt (8-6) | Second | 4½ out |
| Sunday, July 20 |
| » Defeated Mets (44-46), 4-3 | Riverfront Stadium (28-23) | 47-45 | |
| » W: Tom Hume (4-7) L: Jeff Reardon (4-5) | Third | 4½ out |
| Monday, July 21 |
| » Defeated Phillies (47-42), 5-4 | Riverfront Stadium (29-23) | 48-45 | Won 2 |
| » W: Charlie Leibrandt (9-6) L: Randy Lerch (3-12) S: Tom Hume (15) | Third | 4½ out |
| Tuesday, July 22 |
| » Defeated Phillies (47-43), 3-2 | Riverfront Stadium (30-23) | 49-45 | Won 3 |
| » W: Mario Soto (4-4) L: Steve Carlton (15-5) | Third | 4½ out |
| Wednesday, July 23 |
| » Defeated Phillies (47-44), 7-3 | Riverfront Stadium (31-23) | 50-45 | Won 4 |
| » W: Bruce Berenyi (2-0) L: Nino Espinosa (1-2) S: Tom Hume (16) | Third | 3½ out |
| Friday, July 25 |
| » Lost to Mets (46-48), 2-0 | Shea Stadium (2-2) | 50-46 | |
| » W: Pat Zachry (5-5) L: Paul Moskau (7-3) | Third | 4½ out |
| Saturday, July 26 |
| » Defeated Mets (46-49), 5-1 | Shea Stadium (3-2) | 51-46 | |
| » W: Bill Bonham (2-1) L: Roy Lee Jackson (1-1) S: Tom Hume (17) | Third | 3½ out |
| Sunday, July 27 |
| » Defeated Mets (46-50), 10-4 | Shea Stadium (4-2) | 52-46 | Won 2 |
| » W: Joe Price (2-2) L: John Pacella (3-1) | Third | 3½ out |
| Monday, July 28 |
| » Defeated Expos (51-44), 3-2 | Stade Olympique (1-2) | 53-46 | Won 3 |
| » W: Doug Bair (1-4) L: Charlie Lea (2-5) S: Tom Hume (18) | Third | 4 out |
| » Lost to Expos (52-44), 5-4 | Stade Olympique (1-3) | 53-47 | |
| » W: Fred Norman (1-1) L: Mario Soto (4-5) S: Woodie Fryman (11) | Third | 4 out |
| Tuesday, July 29 |
| » Lost to Expos (53-44), 4-1 | Stade Olympique (1-4) | 53-48 | Lost 2 |
| » W: Bill Gullickson (2-3) L: Bruce Berenyi (2-1) | Third | 4 out |
| Wednesday, July 30 |
| » Lost to Expos (54-44), 2-1 | Stade Olympique (1-5) | 53-49 | Lost 3 |
| » W: Woodie Fryman (5-4) L: Doug Bair (1-5) | Third | 4 out |
| Friday, August 1 |
| » Lost to Phillies (53-46), 3-1 | Veteran's Stadium (1-3) | 53-50 | Lost 4 |
| » W: Bob Walk (8-1) L: Charlie Leibrandt (9-7) S: Tug McGraw (10) | Third | 4 out |
| Saturday, August 2 |
| » Defeated Phillies (53-47), 2-0 | Veteran's Stadium (2-3) | 54-50 | |
| » W: Mike LaCoss (6-9) L: Steve Carlton (16-6) | Third | 3½ out |
| Sunday, August 3 |
| » Lost to Phillies (54-47), 8-4 | Veteran's Stadium (2-4) | 54-51 | |
| » W: Nino Espinosa (2-2) L: Bruce Berenyi (2-2) S: Ron Reed (7) | Third | 4 out |
| Monday, August 4 |
| » Defeated Padres (47-58), 7-1 | Riverfront Stadium (32-23) | 55-51 | |
| » W: Tom Seaver (4-5) L: Randy Jones (5-10) S: Tom Hume (19) | Third | 3½ out |
| » Defeated Padres (47-59), 11-2 | Riverfront Stadium (33-23) | 56-51 | Won 2 |
| » W: Mario Soto (5-5) L: Dennis Kinney (4-4) | Third | 3½ out |
| Tuesday, August 5 |
| » Defeated Padres (47-60), 9-2 | Riverfront Stadium (34-23) | 57-51 | Won 3 |
| » W: Paul Moskau (8-3) L: Gary Lucas (4-7) | Third | 2½ out |
| Wednesday, August 6 |
| » Defeated Padres (47-61), 4-3 | Riverfront Stadium (35-23) | 58-51 | Won 4 |
| » W: Tom Hume (5-7) L: John D'Acquisto (2-2) | Third | 2½ out |
| Friday, August 8 |
| » Defeated Dodgers (59-50), 8-5 | Riverfront Stadium (36-23) | 59-51 | Won 5 |
| » W: Tom Hume (6-7) L: Bobby Castillo (3-6) | Third | 1 out |
| Saturday, August 9 |
| » Lost to Dodgers (60-50), 9-4 | Riverfront Stadium (36-24) | 59-52 | |
| » W: Jerry Reuss (13-4) L: Tom Seaver (4-6) S: Rick Sutcliffe (5) | Third | 2 out |
| Sunday, August 10 |
| » Lost to Dodgers (61-50), 7-1 | Riverfront Stadium (36-25) | 59-53 | Lost 2 |
| » W: Dave Goltz (5-7) L: Paul Moskau (8-4) | Third | 2½ out |
| » Major-league debuts: Jay Howell (Reds) |
| Monday, August 11 |
| » Defeated Padres (50-63), 1-0 | San Diego/Jack Murphy Stadium (4-1) | 60-53 | |
| » W: Charlie Leibrandt (10-7) L: Steve Mura (4-4) S: Tom Hume (20) | Third | 1½ out |
| Tuesday, August 12 |
| » Defeated Padres (50-64), 3-2 | San Diego/Jack Murphy Stadium (5-1) | 61-53 | Won 2 |
| » W: Joe Price (3-2) L: Randy Jones (5-11) | Third | ½ out |
| » Major-league debuts: Mike Armstrong (Padres) |
| Wednesday, August 13 |
| » Defeated Padres (50-65), 4-3 | San Diego/Jack Murphy Stadium (6-1) | 62-53 | Won 3 |
| » W: Mario Soto (6-5) L: Bob Shirley (9-8) | First | -- |
| Friday, August 15 |
| » Lost to Dodgers (62-53), 3-1 | Dodger Stadium (1-3) | 62-54 | |
| » W: Jerry Reuss (14-4) L: Tom Seaver (4-7) | Second | ½ out |
| Saturday, August 16 |
| » Defeated Dodgers (62-54), 3-2 | Dodger Stadium (2-3) | 63-54 | |
| » W: Tom Hume (7-7) L: Steve Howe (5-5) | Second | 1 out |
| Sunday, August 17 |
| » Defeated Dodgers (62-55), 6-2 | Dodger Stadium (3-3) | 64-54 | Won 2 |
| » W: Mario Soto (7-5) L: Bob Welch (10-8) S: Tom Hume (21) | Second | ½ out |
| Monday, August 18 |
| » Lost to Cardinals (52-64), 10-1 | Riverfront Stadium (36-26) | 64-55 | |
| » W: Bob Forsch (9-7) L: Charlie Leibrandt (10-8) | Second | 1 out |
| Tuesday, August 19 |
| » Defeated Cardinals (52-65), 4-2 | Riverfront Stadium (37-26) | 65-55 | |
| » W: Mike LaCoss (7-9) L: Silvio Martinez (4-7) S: Doug Bair (6) | Second | 1 out |
| Wednesday, August 20 |
| » Defeated Cardinals (52-66), 4-3 | Riverfront Stadium (38-26) | 66-55 | Won 2 |
| » W: Joe Price (4-2) L: Don Hood (2-5) | Second | 1 out |
| Friday, August 22 |
| » Lost to Pirates (68-54), 4-2 | Riverfront Stadium (38-27) | 66-56 | |
| » W: Don Robinson (5-6) L: Paul Moskau (8-5) S: Kent Tekulve (19) | Second | 2½ out |
| Saturday, August 23 |
| » Lost to Pirates (69-54), 2-1 | Riverfront Stadium (38-28) | 66-57 | Lost 2 |
| » W: Rick Rhoden (4-3) L: Frank Pastore (10-6) S: Grant Jackson (7) | Third | 3½ out |
| Sunday, August 24 |
| » Lost to Pirates (70-54), 5-2 | Riverfront Stadium (38-29) | 66-58 | Lost 3 |
| » W: John Candelaria (9-13) L: Mike LaCoss (7-10) | Third | 4½ out |
| Monday, August 25 |
| » Defeated Cubs (49-74), 2-0 | Riverfront Stadium (39-29) | 67-58 | |
| » W: Tom Seaver (5-7) L: Lynn McGlothen (9-9) S: Mario Soto (1) | Third | 3½ out |
| Former Red Cliff Lee dies in Denver, CO at the age of 85. |
| Tuesday, August 26 |
| » Lost to Cubs (50-74), 4-2 | Riverfront Stadium (39-30) | 67-59 | |
| » W: Rick Reuschel (11-9) L: Tom Hume (7-8) | Third | 4½ out |
| » Major-league debuts: Paul Householder (Reds) |
| Thursday, August 28 |
| » Defeated Pirates (70-58), 4-0 | Three Rivers Stadium (2-1) | 68-59 | |
| » W: Paul Moskau (9-5) L: Rick Rhoden (4-4) | Third | 4 out |
| Friday, August 29 |
| » Defeated Pirates (70-59), 8-7 | Three Rivers Stadium (3-1) | 69-59 | Won 2 |
| » W: Mario Soto (8-5) L: Kent Tekulve (8-7) S: Tom Hume (22) | Third | 4 out |
| Saturday, August 30 |
| » Defeated Pirates (70-60), 5-3 | Three Rivers Stadium (4-1) | 70-59 | Won 3 |
| » W: Tom Seaver (6-7) L: Jim Bibby (15-5) | Third | 4 out |
| Sunday, August 31 |
| » Defeated Pirates (70-61), 5-4 | Three Rivers Stadium (5-1) | 71-59 | Won 4 |
| » W: Mike LaCoss (8-10) L: Bert Blyleven (7-10) S: Mario Soto (2) | Third | 3 out |
| Monday, September 1 |
| » Defeated Cardinals (57-72), 8-1 | Busch Stadium II (2-2) | 72-59 | Won 5 |
| » W: Joe Price (5-2) L: Jim Kaat (5-8) | Third | 2½ out |
| Tuesday, September 2 |
| » Lost to Cardinals (58-72), 12-4 | Busch Stadium II (2-3) | 72-60 | |
| » W: Bob Forsch (11-7) L: Paul Moskau (9-6) S: John Littlefield (8) | Second | 3 out |
| » Major-league debuts: Eddie Milner (Reds) |
| Wednesday, September 3 |
| » Lost to Cardinals (59-72), 4-3 | Busch Stadium II (2-4) | 72-61 | Lost 2 |
| » W: Jim Kaat (6-8) L: Tom Hume (7-9) | Third | 4 out |
| Friday, September 5 |
| » Defeated Cubs (51-81), 5-3 | Wrigley Field (1-2) | 73-61 | |
| » W: Tom Seaver (7-7) L: Rick Reuschel (11-10) S: Mario Soto (3) | Third | 3½ out |
| Saturday, September 6 |
| » Lost to Cubs (52-81), 4-3 | Wrigley Field (1-3) | 73-62 | |
| » W: Bruce Sutter (4-7) L: Tom Hume (7-10) | Third | 4 out |
| » Defeated Cubs (52-82), 6-1 | Wrigley Field (2-3) | 74-62 | |
| » W: Joe Price (6-2) L: Randy Martz (0-1) S: Mario Soto (4) | Third | 4 out |
| » Major-league debuts: Randy Martz (Cubs) |
| Sunday, September 7 |
| » Lost to Cubs (53-82), 6-4 | Wrigley Field (2-4) | 74-63 | |
| » W: Bruce Sutter (5-7) L: Doug Bair (1-6) | Third | 5 out |
| Monday, September 8 |
| » Defeated Braves (71-66), 6-1 | Atlanta-Fulton County Stadium (6-1) | 75-63 | |
| » W: Frank Pastore (11-6) L: Doyle Alexander (13-8) | Third | 4½ out |
| Tuesday, September 9 |
| » Defeated Braves (71-67), 7-1 | Atlanta-Fulton County Stadium (7-1) | 76-63 | Won 2 |
| » W: Mario Soto (9-5) L: Tommy Boggs (9-9) | Third | 3½ out |
| Wednesday, September 10 |
| » Defeated Braves (71-68), 3-0 | Atlanta-Fulton County Stadium (8-1) | 77-63 | Won 3 |
| » W: Tom Seaver (8-7) L: Larry McWilliams (9-11) | Second | 2½ out |
| Friday, September 12 |
| » Lost to Dodgers (80-60), 5-2 | Riverfront Stadium (39-31) | 77-64 | |
| » W: Don Sutton (11-4) L: Mike LaCoss (8-11) S: Steve Howe (16) | Second | 3½ out |
| Saturday, September 13 |
| » Lost to Dodgers (81-60), 3-2 | Riverfront Stadium (39-32) | 77-65 | Lost 2 |
| » W: Bobby Castillo (7-6) L: Mario Soto (9-6) S: Don Stanhouse (6) | Second | 4½ out |
| » Major-league debuts: Jack Perconte (Dodgers) |
| Sunday, September 14 |
| » Lost to Dodgers (82-60), 3-1 | Riverfront Stadium (39-33) | 77-66 | Lost 3 |
| » W: Jerry Reuss (17-5) L: Paul Moskau (9-7) | Second | 5½ out |
| Monday, September 15 |
| » Defeated Giants (67-76), 6-2 | Riverfront Stadium (40-33) | 78-66 | |
| » W: Tom Seaver (9-7) L: Bob Knepper (9-16) | Second | 4½ out |
| Tuesday, September 16 |
| » Lost to Giants (68-76), 8-1 | Riverfront Stadium (40-34) | 78-67 | |
| » W: Ed Whitson (10-11) L: Joe Price (6-3) | Second | 4½ out |
| Wednesday, September 17 |
| » Defeated Astros (82-63), 7-0 | Riverfront Stadium (41-34) | 79-67 | |
| » W: Mario Soto (10-6) L: Joe Niekro (16-12) | Third | 4½ out |
| Thursday, September 18 |
| » Lost to Astros (83-63), 10-2 | Riverfront Stadium (41-35) | 79-68 | |
| » W: Ken Forsch (12-12) L: Frank Pastore (11-7) S: Joe Sambito (16) | Third | 5½ out |
| Friday, September 19 |
| » Defeated Dodgers (84-63), 10-7 | Dodger Stadium (4-3) | 80-68 | |
| » W: Mike LaCoss (9-11) L: Jerry Reuss |