| Monday, April 9 |
| » Defeated Astros (0-1), 8-4 | Astrodome (1-0) | 1-0 | |
| » W: Randy Myers (1-0) L: Charlie Kerfeld (0-1) | First | -- |
| » Major-league debuts: Dave Rohde (Astros) Tim Layana (Reds) |
| Tuesday, April 10 |
| » Defeated Astros (0-2), 3-2 | Astrodome (2-0) | 2-0 | Won 2 |
| » W: Tim Layana (1-0) L: Juan Agosto (0-1) S: Randy Myers (1) | First | -- |
| Wednesday, April 11 |
| » Defeated Astros (0-3), 5-0 | Astrodome (3-0) | 3-0 | Won 3 |
| » W: Jack Armstrong (1-0) L: Mark Portugal (0-1) S: Rick Mahler (1) | First | -- |
| Friday, April 13 |
| » Defeated Braves (1-3), 5-2 | Atlanta-Fulton County Stadium (1-0) | 4-0 | Won 4 |
| » W: Tom Browning (1-0) L: Derek Lilliquist (0-1) S: Randy Myers (2) | First | -- |
| Sunday, April 15 |
| » Defeated Braves (1-4), 13-6 | Atlanta-Fulton County Stadium (2-0) | 5-0 | Won 5 |
| » W: Tim Birtsas (1-0) L: Tom Glavine (0-2) | First | -- |
| Monday, April 16 |
| » Defeated Braves (1-5), 5-3 | Atlanta-Fulton County Stadium (3-0) | 6-0 | Won 6 |
| » W: Jack Armstrong (2-0) L: Pete Smith (1-1) S: Rob Dibble (1) | First | -- |
| Tuesday, April 17 |
| » Defeated Padres (5-3), 2-1 | Riverfront Stadium (1-0) | 7-0 | Won 7 |
| » W: Tom Browning (2-0) L: Andy Benes (1-1) S: Randy Myers (3) | First | -- |
| Wednesday, April 18 |
| » Defeated Padres (5-4), 11-7 | Riverfront Stadium (2-0) | 8-0 | Won 8 |
| » W: Tim Layana (2-0) L: Rafael Valdez (0-1) S: Rob Dibble (2) | First | -- |
| » Major-league debuts: Rafael Valdez (Padres) |
| Friday, April 20 |
| » Major-league debuts: Carlos Hernandez (Dodgers) |
| Saturday, April 21 |
| » Defeated Braves (1-8), 8-1 | Riverfront Stadium (3-0) | 9-0 | Won 9 |
| » W: Jack Armstrong (3-0) L: Marty Clary (0-1) | First | -- |
| » Major-league debuts: Kip Gross (Reds) |
| Sunday, April 22 |
| » Lost to Braves (2-8), 3-1 | Riverfront Stadium (3-1) | 9-1 | |
| » W: Tom Glavine (1-2) L: Tom Browning (2-1) S: Mike Stanton (2) | First | -- |
| Tuesday, April 24 |
| » Lost to Phillies (8-6), 6-3 | Veteran's Stadium (0-1) | 9-2 | Lost 2 |
| » W: Ken Howell (2-1) L: Jose Rijo (0-1) S: Roger McDowell (5) | First | -- |
| Wednesday, April 25 |
| » Defeated Phillies (8-7), 12-7 | Veteran's Stadium (1-1) | 10-2 | |
| » W: Rick Mahler (1-0) L: Bruce Ruffin (1-2) | First | -- |
| Friday, April 27 |
| » Defeated Expos (9-7), 3-2 | Riverfront Stadium (4-1) | 11-2 | Won 2 |
| » W: Rob Dibble (1-0) L: Drew Hall (1-2) | First | -- |
| Saturday, April 28 |
| » Defeated Expos (9-8), 6-4 | Riverfront Stadium (5-1) | 12-2 | Won 3 |
| » W: Jack Armstrong (4-0) L: Oil Can Boyd (1-2) S: Randy Myers (4) | First | -- |
| Sunday, April 29 |
| » Lost to Expos (10-8), 6-3 | Riverfront Stadium (5-2) | 12-3 | |
| » W: Kevin Gross (2-1) L: Ron Robinson (0-1) S: Tim Burke (6) | First | -- |
| Monday, April 30 |
| » Defeated Phillies (10-9), 6-2 | Riverfront Stadium (6-2) | 13-3 | |
| » W: Jose Rijo (1-1) L: Ken Howell (2-2) S: Rob Dibble (3) | First | -- |
| Tuesday, May 1 |
| » Lost to Phillies (11-9), 4-2 | Riverfront Stadium (6-3) | 13-4 | |
| » W: Bruce Ruffin (2-2) L: Tim Birtsas (1-1) S: Roger McDowell (7) | First | -- |
| Wednesday, May 2 |
| » Lost to Mets (10-11), 5-0 | Shea Stadium (0-1) | 13-5 | Lost 2 |
| » W: Frank Viola (5-0) L: Tom Browning (2-2) | First | -- |
| Thursday, May 3 |
| » Defeated Mets (10-12), 5-0 | Shea Stadium (1-1) | 14-5 | |
| » W: Jack Armstrong (5-0) L: Sid Fernandez (1-3) S: Randy Myers (5) | First | -- |
| Friday, May 4 |
| » Defeated Cardinals (10-13), 8-3 | Busch Stadium II (1-0) | 15-5 | Won 2 |
| » W: Ron Robinson (1-1) L: John Tudor (4-1) S: Rob Dibble (4) | First | -- |
| Saturday, May 5 |
| » Defeated Cardinals (10-14), 4-2 | Busch Stadium II (2-0) | 16-5 | Won 3 |
| » W: Jose Rijo (2-1) L: Joe Magrane (0-5) S: Randy Myers (6) | First | -- |
| Sunday, May 6 |
| » Defeated Cardinals (10-15), 5-1 | Busch Stadium II (3-0) | 17-5 | Won 4 |
| » W: Scott Scudder (1-0) L: Bryn Smith (3-3) S: Norm Charlton (1) | First | -- |
| Monday, May 7 |
| » Defeated Cardinals (10-16), 3-0 | Busch Stadium II (4-0) | 18-5 | Won 5 |
| » W: Tom Browning (3-2) L: Jose DeLeon (2-2) | First | -- |
| Wednesday, May 9 |
| » Lost to Pirates (19-8), 6-2 | Three Rivers Stadium (0-1) | 18-6 | |
| » W: John Smiley (3-3) L: Jack Armstrong (5-1) S: Bill Landrum (4) | First | -- |
| Thursday, May 10 |
| » Defeated Pirates (19-9), 10-4 | Three Rivers Stadium (1-1) | 19-6 | |
| » W: Norm Charlton (1-0) L: Ted Power (0-1) | First | -- |
| Friday, May 11 |
| » Defeated Cubs (13-15), 7-5 | Riverfront Stadium (7-3) | 20-6 | Won 2 |
| » W: Norm Charlton (2-0) L: Mitch Williams (0-3) S: Rob Dibble (5) | First | -- |
| Saturday, May 12 |
| » Lost to Cubs (14-15), 4-2 | Riverfront Stadium (7-4) | 20-7 | |
| » W: Mike Bielecki (2-3) L: Tom Browning (3-3) S: Mitch Williams (7) | First | -- |
| Sunday, May 13 |
| » Defeated Cubs (14-16), 13-9 | Riverfront Stadium (8-4) | 21-7 | |
| » W: Rob Dibble (2-0) L: Steve Wilson (0-4) | First | -- |
| Monday, May 14 |
| » Defeated Pirates (22-10), 5-3 | Riverfront Stadium (9-4) | 22-7 | Won 2 |
| » W: Jack Armstrong (6-1) L: Walt Terrell (1-2) S: Randy Myers (7) | First | -- |
| Tuesday, May 15 |
| » Defeated Pirates (22-11), 5-4 | Riverfront Stadium (10-4) | 23-7 | Won 3 |
| » W: Tim Layana (3-0) L: Bob Patterson (2-1) | First | -- |
| Thursday, May 17 |
| » Lost to Cardinals (16-18), 3-0 | Riverfront Stadium (10-5) | 23-8 | |
| » W: Jose DeLeon (3-2) L: Tom Browning (3-4) S: Lee Smith (6) | First | -- |
| Friday, May 18 |
| » Defeated Cardinals (16-19), 1-0 | Riverfront Stadium (11-5) | 24-8 | |
| » W: Norm Charlton (3-0) L: Ken Dayley (1-1) | First | -- |
| Saturday, May 19 |
| » Defeated Cardinals (16-20), 4-0 | Riverfront Stadium (12-5) | 25-8 | Won 2 |
| » W: Jack Armstrong (7-1) L: John Tudor (4-2) | First | -- |
| Sunday, May 20 |
| » Lost to Cardinals (17-20), 6-2 | Riverfront Stadium (12-6) | 25-9 | |
| » W: Joe Magrane (2-6) L: Danny Jackson (0-1) | First | -- |
| Monday, May 21 |
| » Defeated Cubs (18-20), 4-3 | Wrigley Field (1-0) | 26-9 | |
| » W: Jose Rijo (3-1) L: Greg Maddux (4-3) S: Randy Myers (8) | First | -- |
| Tuesday, May 22 |
| » Lost to Cubs (19-20), 2-1 | Wrigley Field (1-1) | 26-10 | |
| » W: Bill Long (2-1) L: Scott Scudder (1-1) | First | -- |
| Thursday, May 24 |
| » Defeated Expos (22-19), 7-1 | Stade Olympique (1-0) | 27-10 | |
| » W: Ron Robinson (2-1) L: Kevin Gross (5-3) | First | -- |
| Friday, May 25 |
| » Defeated Expos (22-20), 5-0 | Stade Olympique (2-0) | 28-10 | Won 2 |
| » W: Jack Armstrong (8-1) L: Dennis Martinez (3-4) | First | -- |
| Saturday, May 26 |
| » Defeated Expos (22-21), 5-3 | Stade Olympique (3-0) | 29-10 | Won 3 |
| » W: Rob Dibble (3-0) L: Tim Burke (0-1) S: Randy Myers (9) | First | -- |
| Sunday, May 27 |
| » Lost to Expos (23-21), 5-3 | Stade Olympique (3-1) | 29-11 | |
| » W: Drew Hall (3-5) L: Tim Birtsas (1-2) S: Tim Burke (11) | First | -- |
| Tuesday, May 29 |
| » Defeated Mets (20-23), 2-1 | Riverfront Stadium (13-6) | 30-11 | |
| » W: Tom Browning (4-4) L: Bob Ojeda (1-3) S: Randy Myers (10) | First | -- |
| Thursday, May 31 |
| » Lost to Dodgers (25-23), 2-1 | Dodger Stadium (0-1) | 30-12 | |
| » W: Don Aase (2-1) L: Norm Charlton (3-1) | First | -- |
| Friday, June 1 |
| » Defeated Dodgers (25-24), 5-2 | Dodger Stadium (1-1) | 31-12 | |
| » W: Danny Jackson (1-1) L: John Wetteland (1-4) S: Rob Dibble (6) | First | -- |
| Saturday, June 2 |
| » Defeated Dodgers (25-25), 8-3 | Dodger Stadium (2-1) | 32-12 | Won 2 |
| » W: Norm Charlton (4-1) L: Tim Crews (1-2) | First | -- |
| Sunday, June 3 |
| » Defeated Dodgers (25-26), 2-0 | Dodger Stadium (3-1) | 33-12 | Won 3 |
| » W: Tom Browning (5-4) L: Fernando Valenzuela (4-5) S: Randy Myers (11) | First | -- |
| Monday, June 4 |
| » Lost to Giants (23-29), 10-1 | Candlestick Park (0-1) | 33-13 | |
| » W: John Burkett (5-1) L: Ron Robinson (2-2) | First | -- |
| Tuesday, June 5 |
| » Lost to Giants (24-29), 6-1 | Candlestick Park (0-2) | 33-14 | Lost 2 |
| » W: Scott Garrelts (2-6) L: Jack Armstrong (8-2) S: Jeff Brantley (7) | First | -- |
| Wednesday, June 6 |
| » Lost to Giants (25-29), 3-2 | Candlestick Park (0-3) | 33-15 | Lost 3 |
| » W: Jeff Brantley (2-1) L: Rob Dibble (3-1) | First | -- |
| Thursday, June 7 |
| » Defeated Astros (20-34), 6-1 | Astrodome (4-0) | 34-15 | |
| » W: Jose Rijo (4-1) L: Bill Gullickson (3-4) | First | -- |
| Friday, June 8 |
| » Lost to Astros (21-34), 3-1 | Astrodome (4-1) | 34-16 | |
| » W: Mike Scott (3-6) L: Randy Myers (1-1) | First | -- |
| Saturday, June 9 |
| » Lost to Astros (22-34), 4-1 | Astrodome (4-2) | 34-17 | Lost 2 |
| » W: Jim Clancy (2-5) L: Rick Mahler (1-1) S: Dave Smith (11) | First | -- |
| Sunday, June 10 |
| » Lost to Astros (23-34), 4-2 | Astrodome (4-3) | 34-18 | Lost 3 |
| » W: Danny Darwin (2-1) L: Jack Armstrong (8-3) | First | -- |
| Tuesday, June 12 |
| » Lost to Braves (22-33), 8-3 | Riverfront Stadium (13-7) | 34-19 | Lost 4 |
| » W: Tom Glavine (3-4) L: Danny Jackson (1-2) | First | -- |
| » Lost to Braves (23-33), 3-2 | Riverfront Stadium (13-8) | 34-20 | Lost 5 |
| » W: Tommy Greene (1-0) L: Jose Rijo (4-2) S: Rick Luecken (1) | First | -- |
| Former Red Glen Gorbous dies in Calgary, AB at the age of 60. |
| Wednesday, June 13 |
| » Defeated Braves (23-34), 13-4 | Riverfront Stadium (14-8) | 35-20 | |
| » W: Tom Browning (6-4) L: Steve Avery (0-1) | First | -- |
| » Major-league debuts: Steve Avery (Braves) |
| Thursday, June 14 |
| » Defeated Braves (23-35), 4-3 | Riverfront Stadium (15-8) | 36-20 | Won 2 |
| » W: Rob Dibble (4-1) L: Joe Boever (1-3) | First | -- |
| Friday, June 15 |
| » Defeated Astros (26-35), 6-3 | Riverfront Stadium (16-8) | 37-20 | Won 3 |
| » W: Jack Armstrong (9-3) L: Jim Clancy (2-6) S: Randy Myers (12) | First | -- |
| » Major-league debuts: Javier Ortiz (Astros) |
| Saturday, June 16 |
| » Defeated Astros (26-36), 6-2 | Riverfront Stadium (17-8) | 38-20 | Won 4 |
| » W: Danny Jackson (2-2) L: Jim Deshaies (3-4) S: Rob Dibble (7) | First | -- |
| Sunday, June 17 |
| » Defeated Astros (26-37), 7-1 | Riverfront Stadium (18-8) | 39-20 | Won 5 |
| » W: Jose Rijo (5-2) L: Mark Portugal (1-7) | First | -- |
| Tuesday, June 19 |
| » Defeated Braves (23-39), 4-2 | Atlanta-Fulton County Stadium (4-0) | 40-20 | Won 6 |
| » W: Norm Charlton (5-1) L: Rick Luecken (0-1) S: Randy Myers (13) | First | -- |
| » Lost to Braves (24-39), 3-0 | Atlanta-Fulton County Stadium (4-1) | 40-21 | |
| » W: Charlie Leibrandt (2-0) L: Rick Mahler (1-2) | First | -- |
| Wednesday, June 20 |
| » Defeated Braves (24-40), 9-8 | Atlanta-Fulton County Stadium (5-1) | 41-21 | |
| » W: Randy Myers (2-1) L: Rick Luecken (0-2) | First | -- |
| Thursday, June 21 |
| » Lost to Braves (25-40), 4-3 | Atlanta-Fulton County Stadium (5-2) | 41-22 | |
| » W: John Smoltz (4-6) L: Rob Dibble (4-2) | First | -- |
| Friday, June 22 |
| » Lost to Dodgers (34-33), 7-6 | Riverfront Stadium (18-9) | 41-23 | Lost 2 |
| » W: Jay Howell (3-4) L: Randy Myers (2-2) S: Tim Crews (3) | First | -- |
| Saturday, June 23 |
| » Defeated Dodgers (34-34), 11-6 | Riverfront Stadium (19-9) | 42-23 | |
| » W: Tom Browning (7-4) L: Tim Belcher (5-5) S: Tim Layana (1) | First | -- |
| Sunday, June 24 |
| » Defeated Dodgers (34-35), 10-6 | Riverfront Stadium (20-9) | 43-23 | Won 2 |
| » W: Rick Mahler (2-2) L: Fernando Valenzuela (5-6) S: Norm Charlton (2) | First | -- |
| Monday, June 25 |
| » Defeated Giants (36-35), 5-2 | Riverfront Stadium (21-9) | 44-23 | Won 3 |
| » W: Jack Armstrong (10-3) L: John Burkett (7-2) S: Randy Myers (14) | First | -- |
| Tuesday, June 26 |
| » Defeated Giants (36-36), 3-2 | Riverfront Stadium (22-9) | 45-23 | Won 4 |
| » W: Randy Myers (3-2) L: Mark Thurmond (1-1) | First | -- |
| Wednesday, June 27 |
| » Lost to Giants (37-36), 8-3 | Riverfront Stadium (22-10) | 45-24 | |
| » W: Don Robinson (3-1) L: Tom Browning (7-5) | First | -- |
| Thursday, June 28 |
| » Lost to Mets (40-29), 5-4 | Shea Stadium (1-2) | 45-25 | Lost 2 |
| » W: Dwight Gooden (7-5) L: Jose Rijo (5-3) S: John Franco (14) | First | -- |
| Friday, June 29 |
| » Lost to Mets (41-29), 4-2 | Shea Stadium (1-3) | 45-26 | Lost 3 |
| » W: Bob Ojeda (4-3) L: Rick Mahler (2-3) S: Jeff Innis (1) | First | -- |
| Saturday, June 30 |
| » Defeated Mets (41-30), 7-4 | Shea Stadium (2-3) | 46-26 | |
| » W: Norm Charlton (6-1) L: Jeff Musselman (0-2) S: Randy Myers (15) | First | -- |
| Sunday, July 1 |
| » Lost to Mets (42-30), 3-2 | Shea Stadium (2-4) | 46-27 | |
| » W: John Franco (4-0) L: Norm Charlton (6-2) | First | -- |
| Tuesday, July 3 |
| » Defeated Expos (43-36), 2-0 | Stade Olympique (4-1) | 47-27 | |
| » W: Tom Browning (8-5) L: Zane Smith (4-6) S: Randy Myers (16) | First | -- |
| Wednesday, July 4 |
| » Lost to Expos (44-36), 5-3 | Stade Olympique (4-2) | 47-28 | |
| » W: Dennis Martinez (6-6) L: Scott Scudder (1-2) S: Dave Schmidt (10) | First | -- |
| Thursday, July 5 |
| » Defeated Phillies (38-39), 9-2 | Veteran's Stadium (2-1) | 48-28 | |
| » W: Jack Armstrong (11-3) L: Ken Howell (8-6) | First | -- |
| Friday, July 6 |
| » Defeated Phillies (38-40), 4-1 | Veteran's Stadium (3-1) | 49-28 | Won 2 |
| » W: Danny Jackson (3-2) L: Jose DeJesus (0-2) S: Randy Myers (17) | First | -- |
| Saturday, July 7 |
| » Defeated Phillies (38-41), 5-0 | Veteran's Stadium (4-1) | 50-28 | Won 3 |
| » W: Rick Mahler (3-3) L: Bruce Ruffin (6-8) | First | -- |
| Sunday, July 8 |
| » Lost to Phillies (39-41), 4-3 | Veteran's Stadium (4-2) | 50-29 | |
| » W: Darrel Akerfelds (3-0) L: Norm Charlton (6-3) | First | -- |
| Thursday, July 12 |
| » Lost to Mets (48-31), 10-3 | Riverfront Stadium (22-11) | 50-30 | Lost 2 |
| » W: Dwight Gooden (9-5) L: Norm Charlton (6-4) | First | -- |
| » Defeated Mets (48-32), 3-2 | Riverfront Stadium (23-11) | 51-30 | |
| » W: Danny Jackson (4-2) L: Ron Darling (2-5) S: Randy Myers (18) | First | -- |
| Friday, July 13 |
| » Defeated Mets (48-33), 4-2 | Riverfront Stadium (24-11) | 52-30 | Won 2 |
| » W: Tom Browning (9-5) L: Frank Viola (13-4) S: Randy Myers (19) | First | -- |
| Saturday, July 14 |
| » Lost to Mets (49-33), 6-3 | Riverfront Stadium (24-12) | 52-31 | |
| » W: David Cone (6-4) L: Jack Armstrong (11-4) S: John Franco (18) | First | -- |
| Sunday, July 15 |
| » Defeated Mets (49-34), 2-1 | Riverfront Stadium (25-12) | 53-31 | |
| » W: Norm Charlton (7-4) L: Sid Fernandez (5-6) S: Randy Myers (20) | First | -- |
| Monday, July 16 |
| » Defeated Expos (50-39), 8-3 | Riverfront Stadium (26-12) | 54-31 | Won 2 |
| » W: Tim Layana (4-0) L: Zane Smith (5-7) | First | -- |
| » Major-league debuts: Chris Hammond (Reds) |
| Tuesday, July 17 |
| » Defeated Expos (50-40), 6-2 | Riverfront Stadium (27-12) | 55-31 | Won 3 |
| » W: Scott Scudder (2-2) L: Mark Gardner (6-5) | First | -- |
| Wednesday, July 18 |
| » Defeated Expos (50-41), 8-7 | Riverfront Stadium (28-12) | 56-31 | Won 4 |
| » W: Rick Mahler (4-3) L: Dave Schmidt (3-2) | First | -- |
| Thursday, July 19 |
| » Lost to Phillies (44-44), 5-2 | Riverfront Stadium (28-13) | 56-32 | |
| » W: Pat Combs (6-7) L: Jack Armstrong (11-5) S: Roger McDowell (14) | First | -- |
| Friday, July 20 |
| » Defeated Phillies (44-45), 5-1 | Riverfront Stadium (29-13) | 57-32 | |
| » W: Norm Charlton (8-4) L: Jeff Parrett (3-8) S: Rob Dibble (8) | First | -- |
| Saturday, July 21 |
| » Defeated Phillies (44-46), 6-1 | Riverfront Stadium (30-13) | 58-32 | Won 2 |
| » W: Jose Rijo (6-3) L: Terry Mulholland (4-4) S: Rick Mahler (2) | First | -- |
| Sunday, July 22 |
| » Lost to Phillies (45-46), 6-2 | Riverfront Stadium (30-14) | 58-33 | |
| » W: Jose DeJesus (2-2) L: Scott Scudder (2-3) | First | -- |
| Monday, July 23 |
| » Defeated Padres (38-54), 9-2 | San Diego/Jack Murphy Stadium (1-0) | 59-33 | |
| » W: Tom Browning (10-5) L: Dennis Rasmussen (7-8) | First | -- |
| Tuesday, July 24 |
| » Lost to Padres (39-54), 10-0 | San Diego/Jack Murphy Stadium (1-1) | 59-34 | |
| » W: Bruce Hurst (6-8) L: Jack Armstrong (11-6) | First | -- |
| Wednesday, July 25 |
| » Lost to Padres (40-54), 2-1 | San Diego/Jack Murphy Stadium (1-2) | 59-35 | Lost 2 |
| » W: Ed Whitson (8-7) L: Norm Charlton (8-5) S: Craig Lefferts (13) | First | -- |
| » Lost to Padres (41-54), 10-4 | San Diego/Jack Murphy Stadium (1-3) | 59-36 | Lost 3 |
| » W: Calvin Schiraldi (3-2) L: Rick Mahler (4-4) | First | -- |
| Thursday, July 26 |
| » Lost to Giants (51-46), 4-3 | Candlestick Park (0-4) | 59-37 | Lost 4 |
| » W: Mark Thurmond (2-2) L: Jose Rijo (6-4) S: Jeff Brantley (16) | First | -- |
| Friday, July 27 |
| » Lost to Giants (52-46), 4-3 | Candlestick Park (0-5) | 59-38 | Lost 5 |
| » W: Don Robinson (7-1) L: Scott Scudder (2-4) | First | -- |
| Saturday, July 28 |
| » Lost to Giants (53-46), 3-2 | Candlestick Park (0-6) | 59-39 | Lost 6 |
| » W: Steve Bedrosian (5-5) L: Randy Myers (3-3) | First | -- |
| Former Red Red Barrett dies in Wilson, NC at the age of 76. |
| Sunday, July 29 |
| » Lost to Giants (54-46), 4-0 | Candlestick Park (0-7) | 59-40 | Lost 7 |
| » W: Scott Garrelts (9-7) L: Jack Armstrong (11-7) | First | -- |
| Monday, July 30 |
| » Lost to Dodgers (52-48), 4-1 | Dodger Stadium (3-2) | 59-41 | Lost 8 |
| » W: Mike Morgan (9-9) L: Norm Charlton (8-6) | First | -- |
| Tuesday, July 31 |
| » Defeated Dodgers (52-49), 5-2 | Dodger Stadium (4-2) | 60-41 | |
| » W: Jose Rijo (7-4) L: Tim Belcher (9-8) S: Randy Myers (21) | First | -- |
| Wednesday, August 1 |
| » Defeated Padres (45-57), 6-3 | San Diego/Jack Murphy Stadium (2-3) | 61-41 | Won 2 |
| » W: Scott Scudder (3-4) L: Andy Benes (7-8) | First | -- |
| Thursday, August 2 |
| » Lost to Padres (46-57), 8-5 | Riverfront Stadium (30-15) | 61-42 | |
| » W: Dennis Rasmussen (8-9) L: Tom Browning (10-6) | First | -- |
| Friday, August 3 |
| » Lost to Padres (47-57), 3-2 | Riverfront Stadium (30-16) | 61-43 | Lost 2 |
| » W: Greg Harris (6-5) L: Rob Dibble (4-3) S: Craig Lefferts (15) | First | -- |
| Saturday, August 4 |
| » Lost to Padres (48-57), 7-3 | Riverfront Stadium (30-17) | 61-44 | Lost 3 |
| » W: Greg Harris (7-5) L: Rick Mahler (4-5) | First | -- |
| Sunday, August 5 |
| » Defeated Padres (48-58), 6-2 | Riverfront Stadium (31-17) | 62-44 | |
| » W: Jose Rijo (8-4) L: Calvin Schiraldi (3-4) | First | -- |
| Tuesday, August 7 |
| » Defeated Dodgers (54-53), 1-0 | Riverfront Stadium (32-17) | 63-44 | Won 2 |
| » W: Tom Browning (11-6) L: Jim Neidlinger (0-1) S: Randy Myers (22) | First | -- |
| Wednesday, August 8 |
| » Lost to Dodgers (55-53), 4-2 | Riverfront Stadium (32-18) | 63-45 | |
| » W: Fernando Valenzuela (9-9) L: Scott Scudder (3-5) | First | -- |
| Thursday, August 9 |
| » Lost to Dodgers (56-53), 10-3 | Riverfront Stadium (32-19) | 63-46 | Lost 2 |
| » W: Ramon Martinez (15-4) L: Jack Armstrong (11-8) | First | -- |
| Friday, August 10 |
| » Defeated Giants (59-52), 7-0 | Riverfront Stadium (33-19) | 64-46 | |
| » W: Norm Charlton (9-6) L: Don Robinson (8-3) | First | -- |
| Saturday, August 11 |
| » Lost to Giants (60-52), 4-2 | Riverfront Stadium (33-20) | 64-47 | |
| » W: John Burkett (11-4) L: Jose Rijo (8-5) S: Jeff Brantley (17) | First | -- |
| Sunday, August 12 |
| » Defeated Giants (60-53), 6-4 | Riverfront Stadium (34-20) | 65-47 | |
| » W: Tom Browning (12-6) L: Scott Garrelts (9-9) S: Randy Myers (23) | First | -- |
| Monday, August 13 |
| » Defeated Giants (60-54), 6-5 | Riverfront Stadium (35-20) | 66-47 | Won 2 |
| » W: Tim Layana (5-0) L: Trevor Wilson (8-4) S: Randy Myers (24) | First | -- |
| Tuesday, August 14 |
| » Defeated Cardinals (54-62), 9-4 | Busch Stadium II (5-0) | 67-47 | Won 3 |
| » W: Jack Armstrong (12-8) L: Jose DeLeon (6-12) S: Rick Mahler (3) | First | -- |
| » Major-league debuts: Tim Sherrill (Cardinals) |
| Wednesday, August 15 |
| » Defeated Cardinals (54-63), 3-1 | Busch Stadium II (6-0) | 68-47 | Won 4 |
| » W: Rob Dibble (5-3) L: Tom Niedenfuer (0-6) S: Tim Layana (2) | First | -- |
| Friday, August 17 |
| » Lost to Pirates (68-49), 7-1 | Riverfront Stadium (35-21) | 68-48 | |
| » W: Mike York (1-0) L: Jose Rijo (8-6) | First | -- |
| » Lost to Pirates (69-49), 4-3 | Riverfront Stadium (35-22) | 68-49 | Lost 2 |
| » W: John Smiley (6-6) L: Tim Layana (5-1) S: Stan Belinda (6) | First | -- |
| » Major-league debuts: Mike York (Pirates) |
| Saturday, August 18 |
| » Lost to Pirates (70-49), 3-1 | Riverfront Stadium (35-23) | 68-50 | Lost 3 |
| » W: Zane Smith (8-7) L: Chris Hammond (0-1) S: Bob Kipper (2) | First | -- |
| Sunday, August 19 |
| » Lost to Pirates (71-49), 6-3 | Riverfront Stadium (35-24) | 68-51 | Lost 4 |
| » W: Doug Drabek (16-5) L: Jack Armstrong (12-9) S: Stan Belinda (7) | First | -- |
| Monday, August 20 |
| » Lost to Cubs (59-62), 3-1 | Riverfront Stadium (35-25) | 68-52 | Lost 5 |
| » W: Mike Bielecki (5-8) L: Norm Charlton (9-7) S: Bill Long (5) | First | -- |
| Tuesday, August 21 |
| » Defeated Cubs (59-63), 8-1 | Riverfront Stadium (36-25) | 69-52 | |
| » W: Rick Mahler (5-5) L: Mike Harkey (12-6) | First | -- |
| » Major-league debuts: Dave Pavlas (Cubs) |
| Wednesday, August 22 |
| » Defeated Cubs (59-64), 4-1 | Riverfront Stadium (37-25) | 70-52 | Won 2 |
| » W: Jose Rijo (9-6) L: Jeff Pico (4-4) | First | -- |
| Thursday, August 23 |
| » Lost to Pirates (74-50), 9-3 | Three Rivers Stadium (1-2) | 70-53 | |
| » W: Zane Smith (9-7) L: Chris Hammond (0-2) | First | -- |
| Friday, August 24 |
| » Defeated Pirates (74-51), 4-3 | Three Rivers Stadium (2-2) | 71-53 | |
| » W: Rob Dibble (6-3) L: Bob Kipper (5-2) S: Randy Myers (25) | First | -- |
| Saturday, August 25 |
| » Defeated Pirates (74-52), 6-1 | Three Rivers Stadium (3-2) | 72-53 | Won 2 |
| » W: Norm Charlton (10-7) L: Stan Belinda (2-4) | First | -- |
| Sunday, August 26 |
| » Defeated Pirates (74-53), 6-2 | Three Rivers Stadium (4-2) | 73-53 | Won 3 |
| » W: Rick Mahler (6-5) L: Randy Tomlin (1-2) S: Rob Dibble (9) | First | -- |
| Tuesday, August 28 |
| » Defeated Cardinals (58-70), 2-1 | Riverfront Stadium (38-25) | 74-53 | Won 4 |
| » W: Jose Rijo (10-6) L: Joe Magrane (8-15) S: Randy Myers (26) | First | -- |
| Wednesday, August 29 |
| » Lost to Cardinals (59-70), 9-1 | Riverfront Stadium (38-26) | 74-54 | |
| » W: Bob Tewksbury (9-4) L: Tom Browning (12-7) | First | -- |
| Thursday, August 30 |
| » Defeated Cubs (61-68), 6-5 | Wrigley Field (2-1) | 75-54 | |
| » W: Danny Jackson (5-2) L: Mike Bielecki (6-9) S: Randy Myers (27) | First | -- |
| Friday, August 31 |
| » Lost to Cubs (62-68), 4-3 | Wrigley Field (2-2) | 75-55 | |
| » W: Bill Long (6-1) L: Randy Myers (3-4) | First | -- |
| Saturday, September 1 |
| » Defeated Cubs (62-69), 8-1 | Wrigley Field (3-2) | 76-55 | |
| » W: Rick Mahler (7-5) L: Jose Nunez (1-6) | First | -- |
| Sunday, September 2 |
| » Defeated Cubs (62-70), 6-2 | Wrigley Field (4-2) | 77-55 | Won 2 |
| » W: Jose Rijo (11-6) L: Greg Maddux (12-12) | First | -- |
| Monday, September 3 |
| » Lost to Braves (54-80), 8-6 | Atlanta-Fulton County Stadium (5-3) | 77-56 | |
| » W: Mark Grant (2-2) L: Tim Layana (5-2) S: Jeff Parrett (2) | First | -- |
| » Major-league debuts: Terry Lee (Reds) |
| Former Red Marshall Bridges dies in Jackson, MS at the age of 60. |
| Tuesday, September 4 |
| » Lost to Braves (55-80), 7-4 | Atlanta-Fulton County Stadium (5-4) | 77-57 | Lost 2 |
| » W: Tom Glavine (7-11) L: Danny Jackson (5-3) S: Kent Mercker (6) | First | -- |
| Wednesday, September 5 |
| » Defeated Giants (69-67), 5-3 | Candlestick Park (1-7) | 78-57 | |
| » W: Norm Charlton (11-7) L: Don Robinson (10-5) S: Rob Dibble (10) | First | -- |
| Thursday, September 6 |
| » Lost to Giants (70-67), 6-2 | Candlestick Park (1-8) | 78-58 | |
| » W: Scott Garrelts (11-10) L: Rick Mahler (7-6) S: Steve Bedrosian (11) | First | -- |
| Friday, September 7 |
| » Lost to Dodgers (73-65), 3-1 | Dodger Stadium (4-3) | 78-59 | Lost 2 |
| » W: Jim Neidlinger (4-1) L: Jose Rijo (11-7) S: Jay Howell (14) | First | -- |
| Saturday, September 8 |
| » Defeated Dodgers (73-66), 8-4 | Dodger Stadium (5-3) | 79-59 | |
| » W: Tom Browning (13-7) L: Fernando Valenzuela (12-12) S: Randy Myers (28) | First | -- |
| Sunday, September 9 |
| » Lost to Dodgers (74-66), 6-4 | Dodger Stadium (5-4) | 79-60 | |
| » W: Ramon Martinez (17-6) L: Danny Jackson (5-4) | First | -- |
| Tuesday, September 11 |
| » Defeated Astros (63-78), 5-3 | Riverfront Stadium (39-26) | 80-60 | |
| » W: Norm Charlton (12-7) L: Jim Deshaies (6-12) S: Randy Myers (29) | First | -- |
| Wednesday, September 12 |
| » Lost to Astros (64-78), 3-1 | Riverfront Stadium (39-27) | 80-61 | |
| » W: Juan Agosto (7-7) L: Tim Layana (5-3) S: Brian Meyer (1) | First | -- |
| Thursday, September 13 |
| » Defeated Astros (64-79), 7-5 | Riverfront Stadium (40-27) | 81-61 | |
| » W: Rob Dibble (7-3) L: Brian Meyer (0-3) | First | -- |
| Friday, September 14 |
| » Lost to Dodgers (76-68), 10-4 | Riverfront Stadium (40-28) | 81-62 | |
| » W: Fernando Valenzuela (13-12) L: Tom Browning (13-8) | First | -- |
| » Major-league debuts: Luis Lopez (Dodgers) |
| Saturday, September 15 |
| » Lost to Dodgers (77-68), 3-0 | Riverfront Stadium (40-29) | 81-63 | Lost 2 |
| » W: Ramon Martinez (18-6) L: Danny Jackson (5-5) | First | -- |
| Sunday, September 16 |
| » Defeated Dodgers (77-69), 9-5 | Riverfront Stadium (41-29) | 82-63 | |
| » W: Scott Scudder (4-5) L: Mike Morgan (10-14) | First | -- |
| » Major-league debuts: Dave Hansen (Dodgers) |
| Monday, September 17 |
| » Defeated Giants (75-72), 4-0 | Riverfront Stadium (42-29) | 83-63 | Won 2 |
| » W: Jose Rijo (12-7) L: Scott Garrelts (12-11) | First | -- |
| Tuesday, September 18 |
| » Lost to Giants (76-72), 5-3 | Riverfront Stadium (42-30) | 83-64 | |
| » W: John Burkett (13-7) L: Tom Browning (13-9) S: Steve Bedrosian (13) | First | -- |
| » Major-league debuts: Gino Minutelli (Reds) Steve Decker (Giants) |
| Wednesday, September 19 |
| » Lost to Astros (68-81), 5-2 | Astrodome (4-4 |
