| Monday, April 2 |
| » Lost to Reds (1-0), 8-1 | Riverfront Stadium (0-1) | 0-1 | |
| » W: Mario Soto (1-0) L: Mike Torrez (0-1) | Second | ½ out |
| » Major-league debuts: Ross Jones (Mets) |
| Wednesday, April 4 |
| » Defeated Reds (1-1), 2-0 | Riverfront Stadium (1-1) | 1-1 | |
| » W: Ron Darling (1-0) L: Bruce Berenyi (0-1) S: Doug Sisk (1) | Second | ½ out |
| Friday, April 6 |
| » Defeated Astros (1-2), 8-1 | Astrodome (1-0) | 2-1 | Won 2 |
| » W: Walt Terrell (1-0) L: Mike Scott (0-1) | First | -- |
| Saturday, April 7 |
| » Defeated Astros (1-3), 3-2 | Astrodome (2-0) | 3-1 | Won 3 |
| » W: Dwight Gooden (1-0) L: Bob Knepper (0-1) S: Jesse Orosco (1) | First | -- |
| Sunday, April 8 |
| » Defeated Astros (1-4), 3-1 | Astrodome (3-0) | 4-1 | Won 4 |
| » W: Tim Leary (1-0) L: Joe Niekro (0-2) S: Doug Sisk (2) | First | -- |
| Tuesday, April 10 |
| » Defeated Braves (2-4), 4-2 | Atlanta-Fulton County Stadium (1-0) | 5-1 | Won 5 |
| » W: Craig Swan (1-0) L: Craig McMurtry (1-1) S: Jesse Orosco (2) | First | -- |
| Wednesday, April 11 |
| » Defeated Braves (2-5), 6-1 | Atlanta-Fulton County Stadium (2-0) | 6-1 | Won 6 |
| » W: Walt Terrell (2-0) L: Ken Dayley (0-2) | First | -- |
| » Major-league debuts: John Gibbons (Mets) |
| Friday, April 13 |
| » Lost to Cubs (4-4), 11-2 | Wrigley Field (0-1) | 6-2 | |
| » W: Steve Trout (1-1) L: Dwight Gooden (1-1) | First | -- |
| Saturday, April 14 |
| » Lost to Cubs (5-4), 5-2 | Wrigley Field (0-2) | 6-3 | Lost 2 |
| » W: Dick Ruthven (2-0) L: Tim Leary (1-1) S: Lee Smith (3) | First | -- |
| Tuesday, April 17 |
| » Lost to Expos (6-5), 10-0 | Shea Stadium (0-1) | 6-4 | Lost 3 |
| » W: Bryn Smith (3-0) L: Ron Darling (1-1) | Second | 1 out |
| Wednesday, April 18 |
| » Defeated Expos (6-6), 5-4 | Shea Stadium (1-1) | 7-4 | |
| » W: Ed Lynch (1-0) L: Jeff Reardon (0-1) | First | -- |
| Thursday, April 19 |
| » Defeated Expos (6-7), 7-6 | Shea Stadium (2-1) | 8-4 | Won 2 |
| » W: Jesse Orosco (1-0) L: Dan Schatzeder (0-2) | First | -- |
| Friday, April 20 |
| » Defeated Phillies (7-5), 3-1 | Veteran's Stadium (1-0) | 9-4 | Won 3 |
| » W: Doug Sisk (1-0) L: Al Holland (0-1) S: Jesse Orosco (3) | First | -- |
| Saturday, April 21 |
| » Lost to Phillies (8-5), 12-2 | Veteran's Stadium (1-1) | 9-5 | |
| » W: John Denny (2-1) L: Mike Torrez (0-2) | First | -- |
| Sunday, April 22 |
| » Lost to Phillies (9-5), 12-5 | Veteran's Stadium (1-2) | 9-6 | Lost 2 |
| » W: Charles Hudson (3-0) L: Ron Darling (1-2) | Second | ½ out |
| Monday, April 23 |
| » Lost to Expos (10-7), 6-4 | Stade Olympique (0-1) | 9-7 | Lost 3 |
| » W: Charlie Lea (3-1) L: Walt Terrell (2-1) S: Gary Lucas (3) | Fourth | 1 out |
| Tuesday, April 24 |
| » Major-league debuts: John Franco (Reds) |
| Wednesday, April 25 |
| » Defeated Expos (10-8), 2-1 | Stade Olympique (1-1) | 10-7 | |
| » W: Jesse Orosco (2-0) L: Greg Harris (0-1) | Second | ½ out |
| Friday, April 27 |
| » Lost to Phillies (11-6), 8-3 | Shea Stadium (2-2) | 10-8 | |
| » W: Bill Campbell (2-0) L: Doug Sisk (1-1) | Second | 1½ out |
| Saturday, April 28 |
| » Defeated Phillies (11-7), 4-3 | Shea Stadium (3-2) | 11-8 | |
| » W: Ed Lynch (2-0) L: Al Holland (0-2) | Second | ½ out |
| Sunday, April 29 |
| » Defeated Phillies (11-8), 6-2 | Shea Stadium (4-2) | 12-8 | Won 2 |
| » W: Walt Terrell (3-1) L: Jerry Koosman (1-4) S: Jesse Orosco (4) | First | -- |
| Tuesday, May 1 |
| » Defeated Cubs (12-9), 8-1 | Shea Stadium (5-2) | 13-8 | Won 3 |
| » W: Dwight Gooden (2-1) L: Dick Ruthven (2-2) | First | -- |
| Wednesday, May 2 |
| » Defeated Cubs (12-10), 4-3 | Shea Stadium (6-2) | 14-8 | Won 4 |
| » W: Ed Lynch (3-0) L: Lee Smith (1-2) | First | -- |
| Friday, May 4 |
| » Defeated Astros (8-17), 2-0 | Shea Stadium (7-2) | 15-8 | Won 5 |
| » W: Ron Darling (2-2) L: Bob Knepper (2-4) S: Jesse Orosco (5) | First | -- |
| Saturday, May 5 |
| » Lost to Astros (9-17), 10-6 | Shea Stadium (7-3) | 15-9 | |
| » W: Bill Dawley (2-2) L: Jesse Orosco (2-1) | First | -- |
| Sunday, May 6 |
| » Lost to Astros (10-17), 10-1 | Shea Stadium (7-4) | 15-10 | Lost 2 |
| » W: Nolan Ryan (2-2) L: Dwight Gooden (2-2) | First | -- |
| Monday, May 7 |
| » Lost to Reds (15-14), 11-2 | Shea Stadium (7-5) | 15-11 | Lost 3 |
| » W: Mario Soto (4-1) L: Tim Leary (1-2) | First | -- |
| Wednesday, May 9 |
| » Defeated Braves (14-15), 3-1 | Shea Stadium (8-5) | 16-11 | |
| » W: Ron Darling (3-2) L: Rick Mahler (0-1) S: Jesse Orosco (6) | Second | ½ out |
| Thursday, May 10 |
| » Lost to Braves (15-15), 7-3 | Shea Stadium (8-6) | 16-12 | |
| » W: Len Barker (3-3) L: Walt Terrell (3-2) | Second | ½ out |
| Friday, May 11 |
| » Defeated Dodgers (21-14), 2-0 | Dodger Stadium (1-0) | 17-12 | |
| » W: Dwight Gooden (3-2) L: Fernando Valenzuela (3-4) | First | -- |
| Saturday, May 12 |
| » Defeated Dodgers (21-15), 4-3 | Dodger Stadium (2-0) | 18-12 | Won 2 |
| » W: Ed Lynch (4-0) L: Alejandro Pena (4-2) S: Doug Sisk (3) | First | -- |
| Sunday, May 13 |
| » Lost to Dodgers (22-15), 5-3 | Dodger Stadium (2-1) | 18-13 | |
| » W: Rick Honeycutt (5-1) L: Mike Torrez (0-3) S: Tom Niedenfuer (6) | First | -- |
| Tuesday, May 15 |
| » Defeated Giants (13-22), 7-6 | Candlestick Park (1-0) | 19-13 | |
| » W: Jesse Orosco (3-1) L: Mark Davis (0-5) S: Doug Sisk (4) | First | -- |
| Wednesday, May 16 |
| » Lost to Giants (14-22), 4-3 | Candlestick Park (1-1) | 19-14 | |
| » W: Mark Davis (1-5) L: Walt Terrell (3-3) | Second | ½ out |
| Friday, May 18 |
| » Lost to Padres (20-18), 5-4 | San Diego/Jack Murphy Stadium (0-1) | 19-15 | Lost 2 |
| » W: Ed Whitson (3-3) L: Dwight Gooden (3-3) S: Rich Gossage (10) | Second | 1 out |
| Saturday, May 19 |
| » Lost to Padres (21-18), 8-3 | San Diego/Jack Murphy Stadium (0-2) | 19-16 | Lost 3 |
| » W: Mark Thurmond (3-2) L: Ed Lynch (4-1) S: Dave Dravecky (3) | Third | 2 out |
| Sunday, May 20 |
| » Defeated Padres (21-19), 4-2 | San Diego/Jack Murphy Stadium (1-2) | 20-16 | |
| » W: Jesse Orosco (4-1) L: Craig Lefferts (0-2) | Third | 2 out |
| Tuesday, May 22 |
| » Lost to Giants (15-25), 5-4 | Shea Stadium (8-7) | 20-17 | |
| » W: Mark Davis (2-5) L: Ron Darling (3-3) S: Gary Lavelle (6) | Third | 2½ out |
| Thursday, May 24 |
| » Lost to Giants (16-25), 3-2 | Shea Stadium (8-8) | 20-18 | Lost 2 |
| » W: Mike Krukow (3-5) L: Walt Terrell (3-4) | Third | 4½ out |
| Friday, May 25 |
| » Defeated Dodgers (25-22), 2-1 | Shea Stadium (9-8) | 21-18 | |
| » W: Dwight Gooden (4-3) L: Rick Honeycutt (6-2) S: Jesse Orosco (7) | Third | 3½ out |
| Saturday, May 26 |
| » Defeated Dodgers (25-23), 2-1 | Shea Stadium (10-8) | 22-18 | Won 2 |
| » W: Tim Leary (2-2) L: Tom Niedenfuer (1-4) S: Jesse Orosco (8) | Third | 2½ out |
| Sunday, May 27 |
| » Lost to Dodgers (26-23), 3-2 | Shea Stadium (10-9) | 22-19 | |
| » W: Bob Welch (4-5) L: Mike Torrez (0-4) S: Burt Hooton (2) | Third | 2½ out |
| Monday, May 28 |
| » Lost to Padres (25-21), 5-4 | Shea Stadium (10-10) | 22-20 | Lost 2 |
| » W: Eric Show (6-3) L: Brent Gaff (0-1) S: Rich Gossage (11) | Third | 3 out |
| Thursday, May 31 |
| » Lost to Cardinals (24-27), 5-2 | Shea Stadium (10-11) | 22-21 | Lost 3 |
| » W: Bob Forsch (1-4) L: Walt Terrell (3-5) S: Bruce Sutter (12) | Third | 3½ out |
| Friday, June 1 |
| » Lost to Cardinals (25-27), 5-1 | Shea Stadium (10-12) | 22-22 | Lost 4 |
| » W: Joaquin Andujar (9-4) L: Jesse Orosco (4-2) | Fourth | 4 out |
| Saturday, June 2 |
| » Defeated Cardinals (25-28), 5-2 | Shea Stadium (11-12) | 23-22 | |
| » W: Ed Lynch (5-1) L: Danny Cox (2-7) S: Doug Sisk (5) | Third | 3½ out |
| Sunday, June 3 |
| » Lost to Cardinals (26-28), 1-0 | Shea Stadium (11-13) | 23-23 | |
| » W: Dave LaPoint (6-6) L: Mike Torrez (0-5) | Third | 4 out |
| Monday, June 4 |
| » Defeated Pirates (21-28), 4-2 | Three Rivers Stadium (1-0) | 24-23 | |
| » W: Ron Darling (4-3) L: Don Robinson (0-2) S: Jesse Orosco (9) | Third | 3½ out |
| Tuesday, June 5 |
| » Defeated Pirates (21-29), 3-0 | Three Rivers Stadium (2-0) | 25-23 | Won 2 |
| » W: Walt Terrell (4-5) L: Jose DeLeon (3-3) | Third | 3½ out |
| Wednesday, June 6 |
| » Defeated Pirates (21-30), 2-1 | Three Rivers Stadium (3-0) | 26-23 | Won 3 |
| » W: Tom Gorman (1-0) L: Rod Scurry (0-3) | Third | 2½ out |
| Friday, June 8 |
| » Defeated Expos (27-28), 4-1 | Stade Olympique (2-1) | 27-23 | Won 4 |
| » W: Ed Lynch (6-1) L: Steve Rogers (2-5) S: Doug Sisk (6) | Second | 2 out |
| Saturday, June 9 |
| » Defeated Expos (27-29), 5-3 | Stade Olympique (3-1) | 28-23 | Won 5 |
| » W: Ron Darling (5-3) L: David Palmer (2-2) S: Jesse Orosco (10) | Second | 1½ out |
| » Defeated Expos (27-30), 6-5 | Stade Olympique (4-1) | 29-23 | Won 6 |
| » W: Mike Torrez (1-5) L: Andy McGaffigan (3-4) S: Jesse Orosco (11) | Second | 1½ out |
| Sunday, June 10 |
| » Lost to Expos (28-30), 3-2 | Stade Olympique (4-2) | 29-24 | |
| » W: Dan Schatzeder (1-2) L: Walt Terrell (4-6) S: Jeff Reardon (9) | Third | 1½ out |
| Monday, June 11 |
| » Defeated Pirates (22-34), 3-1 | Shea Stadium (12-13) | 30-24 | |
| » W: Dwight Gooden (5-3) L: Rick Rhoden (4-5) S: Jesse Orosco (12) | Second | 1½ out |
| Tuesday, June 12 |
| » Lost to Pirates (23-34), 6-3 | Shea Stadium (12-14) | 30-25 | |
| » W: Larry McWilliams (3-4) L: Tim Leary (2-3) S: Rod Scurry (2) | Second | 1½ out |
| Wednesday, June 13 |
| » Defeated Pirates (23-35), 2-0 | Shea Stadium (13-14) | 31-25 | |
| » W: Ed Lynch (7-1) L: Lee Tunnell (1-3) S: Doug Sisk (7) | Second | 1½ out |
| Thursday, June 14 |
| » Defeated Cardinals (32-32), 6-0 | Busch Stadium II (1-0) | 32-25 | Won 2 |
| » W: Ron Darling (6-3) L: John Stuper (2-4) | Second | 1½ out |
| Friday, June 15 |
| » Defeated Cardinals (32-33), 5-0 | Busch Stadium II (2-0) | 33-25 | Won 3 |
| » W: Walt Terrell (5-6) L: Joaquin Andujar (10-6) | First | -- |
| Saturday, June 16 |
| » Defeated Cardinals (32-34), 4-1 | Busch Stadium II (3-0) | 34-25 | Won 4 |
| » W: Dwight Gooden (6-3) L: Danny Cox (3-8) S: Jesse Orosco (13) | First | -- |
| Sunday, June 17 |
| » Lost to Cardinals (33-34), 6-3 | Busch Stadium II (3-1) | 34-26 | |
| » W: Ricky Horton (3-0) L: Bruce Berenyi (3-8) S: Bruce Sutter (16) | Second | 1½ out |
| Tuesday, June 19 |
| » Lost to Phillies (37-27), 6-4 | Shea Stadium (13-15) | 34-27 | Lost 2 |
| » W: Jerry Koosman (7-6) L: Ed Lynch (7-2) | Second | 1½ out |
| Wednesday, June 20 |
| » Defeated Phillies (37-28), 7-4 | Shea Stadium (14-15) | 35-27 | |
| » W: Ron Darling (7-3) L: Steve Carlton (4-4) S: Doug Sisk (8) | Second | 1½ out |
| Thursday, June 21 |
| » Defeated Phillies (37-29), 10-7 | Shea Stadium (15-15) | 36-27 | Won 2 |
| » W: Jesse Orosco (5-2) L: Bill Campbell (3-2) S: Doug Sisk (9) | First | -- |
| Friday, June 22 |
| » Lost to Expos (34-34), 2-1 | Shea Stadium (15-16) | 36-28 | |
| » W: Bill Gullickson (3-5) L: Dwight Gooden (6-4) S: Gary Lucas (5) | First | -- |
| Saturday, June 23 |
| » Defeated Expos (34-35), 2-0 | Shea Stadium (16-16) | 37-28 | |
| » W: Bruce Berenyi (4-8) L: Charlie Lea (11-4) S: Doug Sisk (10) | First | -- |
| Sunday, June 24 |
| » Lost to Expos (35-35), 5-3 | Shea Stadium (16-17) | 37-29 | |
| » W: Bryn Smith (6-5) L: Ed Lynch (7-3) S: Gary Lucas (6) | First | -- |
| Monday, June 25 |
| » Defeated Phillies (39-32), 10-5 | Veteran's Stadium (2-2) | 38-29 | |
| » W: Ron Darling (8-3) L: Charles Hudson (7-5) | First | -- |
| Tuesday, June 26 |
| » Lost to Phillies (40-32), 3-0 | Veteran's Stadium (2-3) | 38-30 | |
| » W: Kevin Gross (4-2) L: Walt Terrell (5-7) S: Al Holland (17) | First | -- |
| Wednesday, June 27 |
| » Lost to Phillies (41-32), 5-1 | Veteran's Stadium (2-4) | 38-31 | Lost 2 |
| » W: Marty Bystrom (4-4) L: Dwight Gooden (6-5) S: Larry Andersen (2) | Second | 2 out |
| Thursday, June 28 |
| » Lost to Braves (42-35), 5-3 | Shea Stadium (16-18) | 38-32 | Lost 3 |
| » W: Craig McMurtry (6-8) L: Bruce Berenyi (4-9) S: Jeff Dedmon (4) | Second | 2 out |
| Friday, June 29 |
| » Lost to Braves (43-35), 5-3 | Shea Stadium (16-19) | 38-33 | Lost 4 |
| » W: Steve Bedrosian (5-5) L: Ed Lynch (7-4) S: Donnie Moore (7) | Third | 2 out |
| Sunday, July 1 |
| » Defeated Braves (43-36), 2-1 | Shea Stadium (17-19) | 39-33 | |
| » W: Ron Darling (9-3) L: Rick Mahler (6-3) S: Jesse Orosco (14) | Second | 2 out |
| » Defeated Braves (43-37), 3-2 | Shea Stadium (18-19) | 40-33 | Won 2 |
| » W: Tim Leary (3-3) L: Jeff Dedmon (2-1) S: Doug Sisk (11) | Second | 2 out |
| Monday, July 2 |
| » Defeated Astros (38-42), 4-2 | Shea Stadium (19-19) | 41-33 | Won 3 |
| » W: Dwight Gooden (7-5) L: Mike Scott (4-6) S: Jesse Orosco (15) | First | -- |
| Tuesday, July 3 |
| » Defeated Astros (38-43), 4-3 | Shea Stadium (20-19) | 42-33 | Won 4 |
| » W: Bruce Berenyi (5-9) L: Nolan Ryan (7-3) S: Jesse Orosco (16) | First | -- |
| Wednesday, July 4 |
| » Lost to Astros (39-43), 10-5 | Shea Stadium (20-20) | 42-34 | |
| » W: Bob Knepper (8-8) L: Ed Lynch (7-5) S: Dave Smith (4) | Second | 2 out |
| Thursday, July 5 |
| » Defeated Reds (39-44), 4-3 | Shea Stadium (21-20) | 43-34 | |
| » W: Walt Terrell (6-7) L: Joe Price (3-5) S: Doug Sisk (12) | Second | 2 out |
| Friday, July 6 |
| » Defeated Reds (39-45), 1-0 | Shea Stadium (22-20) | 44-34 | Won 2 |
| » W: Ron Darling (10-3) L: Jeff Russell (4-9) | Second | 1½ out |
| » Defeated Reds (39-46), 6-5 | Shea Stadium (23-20) | 45-34 | Won 3 |
| » W: Jesse Orosco (6-2) L: Ted Power (5-5) | Second | 1½ out |
| Saturday, July 7 |
| » Defeated Reds (39-47), 14-4 | Shea Stadium (24-20) | 46-34 | Won 4 |
| » W: Dwight Gooden (8-5) L: Mario Soto (9-2) S: Ed Lynch (1) | First | -- |
| Sunday, July 8 |
| » Defeated Reds (39-48), 7-3 | Shea Stadium (25-20) | 47-34 | Won 5 |
| » W: Bruce Berenyi (6-9) L: Charlie Puleo (1-2) S: Jesse Orosco (17) | First | -- |
| Thursday, July 12 |
| » Defeated Braves (46-42), 8-6 | Atlanta-Fulton County Stadium (3-0) | 48-34 | Won 6 |
| » W: Jesse Orosco (7-2) L: Donnie Moore (0-1) S: Doug Sisk (13) | First | -- |
| Friday, July 13 |
| » Defeated Braves (46-43), 5-4 | Atlanta-Fulton County Stadium (4-0) | 49-34 | Won 7 |
| » W: Walt Terrell (7-7) L: Pascual Perez (9-4) S: Jesse Orosco (18) | First | -- |
| Saturday, July 14 |
| » Defeated Braves (46-44), 7-0 | Atlanta-Fulton County Stadium (5-0) | 50-34 | Won 8 |
| » W: Bruce Berenyi (7-9) L: Craig McMurtry (7-10) | First | -- |
| Sunday, July 15 |
| » Lost to Braves (47-44), 8-3 | Atlanta-Fulton County Stadium (5-1) | 50-35 | |
| » W: Donnie Moore (1-1) L: Dwight Gooden (8-6) S: Steve Bedrosian (9) | First | -- |
| Monday, July 16 |
| » Defeated Astros (43-49), 13-3 | Astrodome (4-0) | 51-35 | |
| » W: Sid Fernandez (1-0) L: Mike Scott (4-7) | First | -- |
| Tuesday, July 17 |
| » Lost to Astros (44-49), 3-2 | Astrodome (4-1) | 51-36 | |
| » W: Frank DiPino (4-5) L: Doug Sisk (1-2) | First | -- |
| Wednesday, July 18 |
| » Defeated Astros (44-50), 3-1 | Astrodome (5-1) | 52-36 | |
| » W: Walt Terrell (8-7) L: Nolan Ryan (7-6) S: Jesse Orosco (19) | First | -- |
| Thursday, July 19 |
| » Lost to Reds (41-54), 9-6 | Riverfront Stadium (1-2) | 52-37 | |
| » W: Mario Soto (10-3) L: Bruce Berenyi (7-10) S: John Franco (4) | First | -- |
| Friday, July 20 |
| » Defeated Reds (41-55), 3-2 | Riverfront Stadium (2-2) | 53-37 | |
| » W: Jesse Orosco (8-2) L: Brad Lesley (0-1) | First | -- |
| Saturday, July 21 |
| » Defeated Reds (41-56), 2-1 | Riverfront Stadium (3-2) | 54-37 | Won 2 |
| » W: Sid Fernandez (2-0) L: Tom Hume (3-10) S: Doug Sisk (14) | First | -- |
| Sunday, July 22 |
| » Defeated Reds (41-57), 7-6 | Riverfront Stadium (4-2) | 55-37 | Won 3 |
| » W: Tom Gorman (2-0) L: Keefe Cato (0-1) S: Jesse Orosco (20) | First | -- |
| Monday, July 23 |
| » Defeated Cardinals (47-51), 4-3 | Shea Stadium (26-20) | 56-37 | Won 4 |
| » W: Ed Lynch (8-5) L: Neil Allen (5-4) | First | -- |
| Tuesday, July 24 |
| » Defeated Cardinals (47-52), 9-8 | Shea Stadium (27-20) | 57-37 | Won 5 |
| » W: Brent Gaff (1-1) L: Neil Allen (5-5) | First | -- |
| Wednesday, July 25 |
| » Defeated Cardinals (47-53), 9-3 | Shea Stadium (28-20) | 58-37 | Won 6 |
| » W: Sid Fernandez (3-0) L: Kurt Kepshire (2-2) S: Ed Lynch (2) | First | -- |
| Friday, July 27 |
| » Defeated Cubs (56-43), 2-1 | Shea Stadium (29-20) | 59-37 | Won 7 |
| » W: Dwight Gooden (9-6) L: Dick Ruthven (2-7) S: Jesse Orosco (21) | First | -- |
| Saturday, July 28 |
| » Lost to Cubs (57-43), 11-4 | Shea Stadium (29-21) | 59-38 | |
| » W: Lee Smith (5-4) L: Doug Sisk (1-3) | First | -- |
| Sunday, July 29 |
| » Lost to Cubs (58-43), 3-0 | Shea Stadium (29-22) | 59-39 | Lost 2 |
| » W: Steve Trout (10-5) L: Walt Terrell (8-8) | First | -- |
| » Lost to Cubs (59-43), 5-1 | Shea Stadium (29-23) | 59-40 | Lost 3 |
| » W: Scott Sanderson (6-2) L: Bruce Berenyi (7-11) | First | -- |
| » Major-league debuts: Wes Gardner (Mets) |
| Monday, July 30 |
| » Lost to Cardinals (51-53), 3-1 | Busch Stadium II (3-2) | 59-41 | Lost 4 |
| » W: Jeff Lahti (3-1) L: Jesse Orosco (8-3) | First | -- |
| Tuesday, July 31 |
| » Lost to Cardinals (52-53), 6-3 | Busch Stadium II (3-3) | 59-42 | Lost 5 |
| » W: Kurt Kepshire (3-2) L: Ed Lynch (8-6) S: Bruce Sutter (27) | First | -- |
| Wednesday, August 1 |
| » Lost to Cardinals (53-53), 11-2 | Busch Stadium II (3-4) | 59-43 | Lost 6 |
| » W: Joaquin Andujar (15-9) L: Dwight Gooden (9-7) | Second | 1½ out |
| Thursday, August 2 |
| » Lost to Pirates (47-61), 6-4 | Three Rivers Stadium (3-1) | 59-44 | Lost 7 |
| » W: Don Robinson (1-4) L: Ron Darling (10-4) | Second | 1½ out |
| Friday, August 3 |
| » Defeated Pirates (47-62), 4-1 | Three Rivers Stadium (4-1) | 60-44 | |
| » W: Walt Terrell (9-8) L: John Candelaria (9-8) | Second | 1½ out |
| Saturday, August 4 |
| » Defeated Pirates (47-63), 4-3 | Three Rivers Stadium (5-1) | 61-44 | Won 2 |
| » W: Tom Gorman (3-0) L: Rod Scurry (3-6) S: Jesse Orosco (22) | Second | 1½ out |
| Sunday, August 5 |
| » Defeated Pirates (47-64), 3-1 | Three Rivers Stadium (6-1) | 62-44 | Won 3 |
| » W: Wes Gardner (1-0) L: Don Robinson (1-5) | Second | 1½ out |
| Monday, August 6 |
| » Lost to Cubs (65-45), 9-3 | Wrigley Field (0-3) | 62-45 | |
| » W: Dick Ruthven (3-7) L: Dwight Gooden (9-8) | Second | 1½ out |
| Tuesday, August 7 |
| » Lost to Cubs (66-45), 8-6 | Wrigley Field (0-4) | 62-46 | Lost 2 |
| » W: Rick Sutcliffe (13-6) L: Ron Darling (10-5) S: George Frazier (3) | Second | 3½ out |
| » Lost to Cubs (67-45), 8-4 | Wrigley Field (0-5) | 62-47 | Lost 3 |
| » W: Tim Stoddard (8-4) L: Ed Lynch (8-7) S: Lee Smith (25) | Second | 3½ out |
| Wednesday, August 8 |
| » Lost to Cubs (68-45), 7-6 | Wrigley Field (0-6) | 62-48 | Lost 4 |
| » W: Lee Smith (7-4) L: Wes Gardner (1-1) S: Tim Stoddard (7) | Second | 4½ out |
| Thursday, August 9 |
| » Lost to Pirates (50-65), 11-0 | Shea Stadium (29-24) | 62-49 | Lost 5 |
| » W: Rick Rhoden (10-8) L: Bruce Berenyi (7-12) | Second | 4½ out |
| Friday, August 10 |
| » Lost to Pirates (51-65), 4-1 | Shea Stadium (29-25) | 62-50 | Lost 6 |
| » W: John Tudor (7-8) L: Sid Fernandez (3-1) S: Kent Tekulve (10) | Second | 4½ out |
| Saturday, August 11 |
| » Defeated Pirates (51-66), 3-1 | Shea Stadium (30-25) | 63-50 | |
| » W: Dwight Gooden (10-8) L: Larry McWilliams (7-9) S: Jesse Orosco (23) | Second | 4½ out |
| Sunday, August 12 |
| » Defeated Pirates (51-67), 6-3 | Shea Stadium (31-25) | 64-50 | Won 2 |
| » W: Ron Darling (11-5) L: Jose DeLeon (6-9) S: Wes Gardner (1) | Second | 4½ out |
| Monday, August 13 |
| » Lost to Dodgers (60-59), 9-2 | Dodger Stadium (2-2) | 64-51 | |
| » W: Bob Welch (10-11) L: Walt Terrell (9-9) | Second | 4½ out |
| Tuesday, August 14 |
| » Defeated Dodgers (60-60), 4-0 | Dodger Stadium (3-2) | 65-51 | |
| » W: Bruce Berenyi (8-12) L: Orel Hershiser (8-5) S: Jesse Orosco (24) | Second | 3½ out |
| Wednesday, August 15 |
| » Defeated Dodgers (60-61), 3-2 | Dodger Stadium (4-2) | 66-51 | Won 2 |
| » W: Sid Fernandez (4-1) L: Fernando Valenzuela (9-14) S: Jesse Orosco (25) | Second | 2½ out |
| Friday, August 17 |
| » Defeated Giants (45-73), 2-0 | Candlestick Park (2-1) | 67-51 | Won 3 |
| » W: Dwight Gooden (11-8) L: Mike Krukow (10-9) S: Jesse Orosco (26) | Second | 1½ out |
| Saturday, August 18 |
| » Lost to Giants (46-73), 6-5 | Candlestick Park (2-2) | 67-52 | |
| » W: Randy Lerch (4-1) L: Brent Gaff (1-2) | Second | 2½ out |
| Sunday, August 19 |
| » Lost to Giants (47-73), 7-6 | Candlestick Park (2-3) | 67-53 | Lost 2 |
| » W: Gary Lavelle (5-4) L: Jesse Orosco (8-4) | Second | 3 out |
| » Defeated Giants (47-74), 4-2 | Candlestick Park (3-3) | 68-53 | |
| » W: Bruce Berenyi (9-12) L: Mark Davis (3-15) S: Jesse Orosco (27) | Second | 3 out |
| Monday, August 20 |
| » Lost to Padres (72-51), 3-1 | San Diego/Jack Murphy Stadium (1-3) | 68-54 | |
| » W: Eric Show (13-7) L: Sid Fernandez (4-2) S: Rich Gossage (23) | Second | 4 out |
| Tuesday, August 21 |
| » Lost to Padres (73-51), 7-4 | San Diego/Jack Murphy Stadium (1-4) | 68-55 | Lost 2 |
| » W: Tim Lollar (10-10) L: Ed Lynch (8-8) S: Rich Gossage (24) | Second | 5 out |
| Wednesday, August 22 |
| » Defeated Padres (73-52), 5-2 | San Diego/Jack Murphy Stadium (2-4) | 69-55 | |
| » W: Dwight Gooden (12-8) L: Andy Hawkins (7-6) | Second | 4 out |
| Friday, August 24 |
| » Lost to Giants (49-76), 7-6 | Shea Stadium (31-26) | 69-56 | |
| » W: Frank Williams (7-2) L: Jesse Orosco (8-5) S: Greg Minton (13) | Second | 5½ out |
| » Lost to Giants (50-76), 6-5 | Shea Stadium (31-27) | 69-57 | Lost 2 |
| » W: Frank Williams (8-2) L: Walt Terrell (9-10) S: Greg Minton (14) | Second | 5½ out |
| Saturday, August 25 |
| » Lost to Giants (51-76), 5-4 | Shea Stadium (31-28) | 69-58 | Lost 3 |
| » W: Randy Lerch (5-1) L: Bruce Berenyi (9-13) S: Gary Lavelle (10) | Second | 5½ out |
| Sunday, August 26 |
| » Defeated Giants (51-77), 11-6 | Shea Stadium (32-28) | 70-58 | |
| » W: Brent Gaff (2-2) L: Mike Krukow (10-10) | Second | 5½ out |
| Monday, August 27 |
| » Defeated Dodgers (63-68), 5-1 | Shea Stadium (33-28) | 71-58 | Won 2 |
| » W: Dwight Gooden (13-8) L: Fernando Valenzuela (10-15) | Second | 5 out |
| Tuesday, August 28 |
| » Defeated Dodgers (63-69), 5-1 | Shea Stadium (34-28) | 72-58 | Won 3 |
| » W: Walt Terrell (10-10) L: Rick Honeycutt (10-8) | Second | 5½ out |
| Wednesday, August 29 |
| » Defeated Dodgers (63-70), 3-2 | Shea Stadium (35-28) | 73-58 | Won 4 |
| » W: Jesse Orosco (9-5) L: Pat Zachry (5-4) | Second | 5½ out |
| Friday, August 31 |
| » Lost to Padres (78-55), 5-1 | Shea Stadium (35-29) | 73-59 | |
| » W: Ed Whitson (13-7) L: Sid Fernandez (4-3) S: Craig Lefferts (9) | Second | 5½ out |
| » Defeated Padres (78-56), 4-0 | Shea Stadium (36-29) | 74-59 | |
| » W: Bruce Berenyi (10-13) L: Dave Dravecky (8-7) | Second | 5½ out |
| Saturday, September 1 |
| » Defeated Padres (78-57), 7-4 | Shea Stadium (37-29) | 75-59 | Won 2 |
| » W: Dwight Gooden (14-8) L: Andy Hawkins (7-8) S: Jesse Orosco (28) | Second | 5 out |
| » Defeated Padres (78-58), 10-6 | Shea Stadium (38-29) | 76-59 | Won 3 |
| » W: Tom Gorman (4-0) L: Eric Show (14-8) S: Jesse Orosco (29) | Second | 5 out |
| » Major-league debuts: Calvin Schiraldi and Herm Winningham (Mets) |
| Sunday, September 2 |
| » Defeated Padres (78-59), 3-2 | Shea Stadium (39-29) | 77-59 | Won 4 |
| » W: Brent Gaff (3-2) L: Rich Gossage (8-5) | Second | 5 out |
| Monday, September 3 |
| » Lost to Cardinals (69-66), 7-3 | Busch Stadium II (3-5) | 77-60 | |
| » W: Joaquin Andujar (18-11) L: Ron Darling (11-6) S: Bruce Sutter (38) | Second | 6 out |
| Tuesday, September 4 |
| » Lost to Cardinals (70-66), 12-2 | Busch Stadium II (3-6) | 77-61 | Lost 2 |
| » W: Danny Cox (7-10) L: Sid Fernandez (4-4) | Second | 7 out |
| » Major-league debuts: Kevin Mitchell (Mets) |
| Wednesday, September 5 |
| » Defeated Pirates (60-79), 4-2 | Three Rivers Stadium (7-1) | 78-61 | |
| » W: Bruce Berenyi (11-13) L: Lee Tunnell (1-4) S: Doug Sisk (15) | Second | 6 out |
| Thursday, September 6 |
| » Lost to Pirates (61-79), 2-0 | Three Rivers Stadium (7-2) | 78-62 | |
| » W: Rick Rhoden (12-9) L: Calvin Schiraldi (0-1) S: Rod Scurry (3) | Second | 7 out |
| Friday, September 7 |
| » Defeated Cubs (85-56), 10-0 | Shea Stadium (40-29) | 79-62 | |
| » W: Dwight Gooden (15-8) L: Dick Ruthven (5-10) | Second | 6 out |
| Saturday, September 8 |
| » Lost to Cubs (86-56), 6-0 | Shea Stadium (40-30) | 79-63 | |
| » W: Rick Sutcliffe (18-6) L: Walt Terrell (10-11) | Second | 7 out |
| Sunday, September 9 |
| » Defeated Cubs (86-57), 5-1 | Shea Stadium (41-30) | 80-63 | |
| » W: Ron Darling (12-6) L: George Frazier (8-5) | Second | 6 out |
| Monday, September 10 |
| » Lost to Cardinals (75-67), 3-2 | Shea Stadium (41-31) | 80-64 | |
| » W: Dave LaPoint (10-10) L: Sid Fernandez (4-5) S: Bruce Sutter (41) | Second | 7 out |
| Tuesday, September 11 |
| » Lost to Cardinals (76-67), 9-5 | Shea Stadium (41-32) | 80-65 | Lost 2 |
| » W: Neil Allen (9-5) L: Jesse Orosco (9-6) S: Bruce Sutter (42) | Second | 7 out |
| Wednesday, September 12 |
| » Defeated Pirates (63-83), 2-0 | Shea Stadium (42-32) | 81-65 | |
| » W: Dwight Gooden (16-8) L: John Tudor (9-11) | Second | 7 out |
| Thursday, September 13 |
| » Lost to Pirates (64-83), 14-4 | Shea Stadium (42-33) | 81-66 | |
| » W: Larry McWilliams (10-10) L: Walt Terrell (10-12) | Second | 7½ out |
| » Major-league debuts: John Christensen (Mets) |
| Friday, September 14 |
| » Lost to Cubs (89-58), 7-1 | Wrigley Field (0-7) | 81-67 | Lost 2 |
| » W: Rick Sutcliffe (19-6) L: Ron Darling (12-7) | Second | 8½ out |
| Saturday, September 15 |
| » Lost to Cubs (90-58), 5-4 | Wrigley Field (0-8) | 81-68 | Lost 3 |
| » W: Scott Sanderson (8-4) L: Sid Fernandez (4-6) S: Lee Smith (32) | Second | 9½ out |
| Sunday, September 16 |
| » Defeated Cubs (90-59), 9-3 | Wrigley Field (1-8) | 82-68 | |
| » W: Bruce Berenyi (12-13) L: Steve Trout (12-7) | Second | 8½ out |
| Monday, September 17 |
| » Lost to Phillies (80-71), 2-1 | Veteran's Stadium (2-5) | 82-69 | |
| » W: Shane Rawley (12-7) L: Dwight Gooden (16-9) | Second | 9 out |
| Tuesday, September 18 |
| » Defeated Phillies (80-72), 8-5 | Veteran's Stadium (3-5) | 83-69 | |
| » W: Tom Gorman (5-0) L: Larry Andersen (3-4) S: Jesse Orosco (30) | Second | 8 out |
| Wednesday, September 19 |
| » Lost to Phillies (81-72), 13-5 | Veteran's Stadium (3-6) | 83-70 | |
| » W: Steve Carlton (13-7) L: Ron Darling (12-8) | Second | 8 out |
| Friday, September 21 |
| » Defeated Expos (74-78), 6-2 | Shea Stadium (43-33) | 84-70 | |
| » W: Sid Fernandez (5-6) L: Dan Schatzeder (7-6) | Second | 6½ out |
| Saturday, September 22 |
| » Defeated Expos (74-79) |