| 1990-04-09 | @ HOU | 1 | W 8-4 | 1-0 | 1 | 40,957 | Tom Browning | Mike Scott | Randy Myers | Charlie Kerfeld | | 8 | 4 | 4 |
| 1990-04-10 | @ HOU | 2 | W 3-2 | 2-0 | 1 | 11,027 | Jose Rijo | Jim Deshaies | Tim Layana | Juan Agosto | Randy Myers | 11 | 6 | 5 |
| 1990-04-11 | @ HOU | 3 | W 5-0 | 3-0 | 1 | 11,551 | Jack Armstrong | Mark Portugal | Jack Armstrong | Mark Portugal | Rick Mahler | 16 | 6 | 10 |
| 1990-04-13 | @ ATL | 4 | W 5-2 | 4-0 | 1 | 12,364 | Tom Browning | Derek Lilliquist | Tom Browning | Derek Lilliquist | Randy Myers | 21 | 8 | 13 |
| 1990-04-15 | @ ATL | 5 | W 13-6 | 5-0 | 1 | 10,067 | Rick Mahler | Tom Glavine | Tim Birtsas | Tom Glavine | | 34 | 14 | 20 |
| 1990-04-16 | @ ATL | 6 | W 5-3 | 6-0 | 1 | 6,484 | Jack Armstrong | Pete Smith | Jack Armstrong | Pete Smith | Rob Dibble | 39 | 17 | 22 |
| 1990-04-17 | vs SDN | 7 | W 2-1 | 7-0 | 1 | 45,000 | Tom Browning | Andy Benes | Tom Browning | Andy Benes | Randy Myers | 41 | 18 | 23 |
| 1990-04-18 | vs SDN | 8 | W 11-7 | 8-0 | 1 | 18,487 | Danny Jackson | Dennis Rasmussen | Tim Layana | Rafael Valdez | Rob Dibble | 52 | 25 | 27 |
| 1990-04-21 | vs ATL | 9 | W 8-1 | 9-0 | 1 | 24,091 | Jack Armstrong | Marty Clary | Jack Armstrong | Marty Clary | | 60 | 26 | 34 |
| 1990-04-22 | vs ATL | 10 | L 1-3 | 9-1 | 1 | 29,299 | Tom Browning | Tom Glavine | Tom Glavine | Tom Browning | Mike Stanton | 61 | 29 | 32 |
| 1990-04-24 | @ PHI | 11 | L 3-6 | 9-2 | 1 | 19,161 | Jose Rijo | Ken Howell | Ken Howell | Jose Rijo | Roger McDowell | 64 | 35 | 29 |
| 1990-04-25 | @ PHI | 12 | W 12-7 | 10-2 | 1 | 18,497 | Rick Mahler | Bruce Ruffin | Rick Mahler | Bruce Ruffin | | 76 | 42 | 34 |
| 1990-04-27 | vs MON | 13 | W 3-2 | 11-2 | 1 | 25,564 | Tom Browning | Zane Smith | Rob Dibble | Drew Hall | | 79 | 44 | 35 |
| 1990-04-28 | vs MON | 14 | W 6-4 | 12-2 | 1 | 21,775 | Jack Armstrong | Oil Can Boyd | Jack Armstrong | Oil Can Boyd | Randy Myers | 85 | 48 | 37 |
| 1990-04-29 | vs MON | 15 | L 3-6 | 12-3 | 1 | 27,344 | Danny Jackson | Kevin Gross | Kevin Gross | Ron Robinson | Tim Burke | 88 | 54 | 34 |
| 1990-04-30 | vs PHI | 16 | W 6-2 | 13-3 | 1 | 17,294 | Jose Rijo | Ken Howell | Jose Rijo | Ken Howell | Rob Dibble | 94 | 56 | 38 |
| 1990-05-01 | vs PHI | 17 | L 2-4 | 13-4 | 1 | 16,926 | Rick Mahler | Bruce Ruffin | Bruce Ruffin | Tim Birtsas | Roger McDowell | 96 | 60 | 36 |
| 1990-05-02 | @ NYN | 18 | L 0-5 | 13-5 | 1 | 22,668 | Tom Browning | Frank Viola | Frank Viola | Tom Browning | | 96 | 65 | 31 |
| 1990-05-03 | @ NYN | 19 | W 5-0 | 14-5 | 1 | 26,899 | Jack Armstrong | Sid Fernandez | Jack Armstrong | Sid Fernandez | Randy Myers | 101 | 65 | 36 |
| 1990-05-04 | @ SLN | 20 | W 8-3 | 15-5 | 1 | 41,655 | Ron Robinson | John Tudor | Ron Robinson | John Tudor | Rob Dibble | 109 | 68 | 41 |
| 1990-05-05 | @ SLN | 21 | W 4-2 | 16-5 | 1 | 44,552 | Jose Rijo | Joe Magrane | Jose Rijo | Joe Magrane | Randy Myers | 113 | 70 | 43 |
| 1990-05-06 | @ SLN | 22 | W 5-1 | 17-5 | 1 | 38,772 | Scott Scudder | Bryn Smith | Scott Scudder | Bryn Smith | Norm Charlton | 118 | 71 | 47 |
| 1990-05-07 | @ SLN | 23 | W 3-0 | 18-5 | 1 | 28,018 | Tom Browning | Jose DeLeon | Tom Browning | Jose DeLeon | | 121 | 71 | 50 |
| 1990-05-09 | @ PIT | 24 | L 2-6 | 18-6 | 1 | 17,149 | Jack Armstrong | John Smiley | John Smiley | Jack Armstrong | Bill Landrum | 123 | 77 | 46 |
| 1990-05-10 | @ PIT | 25 | W 10-4 | 19-6 | 1 | 15,071 | Jose Rijo | Randy Kramer | Norm Charlton | Ted Power | | 133 | 81 | 52 |
| 1990-05-11 | vs CHN | 26 | W 7-5 | 20-6 | 1 | 38,900 | Scott Scudder | Greg Maddux | Norm Charlton | Mitch Williams | Rob Dibble | 140 | 86 | 54 |
| 1990-05-12 | vs CHN | 27 | L 2-4 | 20-7 | 1 | 33,646 | Tom Browning | Mike Bielecki | Mike Bielecki | Tom Browning | Mitch Williams | 142 | 90 | 52 |
| 1990-05-13 | vs CHN | 28 | W 13-9 | 21-7 | 1 | 32,251 | Ron Robinson | Mike Harkey | Rob Dibble | Steve Wilson | | 155 | 99 | 56 |
| 1990-05-14 | vs PIT | 29 | W 5-3 | 22-7 | 1 | 24,211 | Jack Armstrong | Walt Terrell | Jack Armstrong | Walt Terrell | Randy Myers | 160 | 102 | 58 |
| 1990-05-15 | vs PIT | 30 | W 5-4 | 23-7 | 1 | 13,353 | Jose Rijo | John Smiley | Tim Layana | Bob Patterson | | 165 | 106 | 59 |
| 1990-05-17 | vs SLN | 31 | L 0-3 | 23-8 | 1 | 22,741 | Tom Browning | Jose DeLeon | Jose DeLeon | Tom Browning | Lee Smith | 165 | 109 | 56 |
| 1990-05-18 | vs SLN | 32 | W 1-0 | 24-8 | 1 | 34,968 | Ron Robinson | Greg Mathews | Norm Charlton | Ken Dayley | | 166 | 109 | 57 |
| 1990-05-19 | vs SLN | 33 | W 4-0 | 25-8 | 1 | 36,005 | Jack Armstrong | John Tudor | Jack Armstrong | John Tudor | | 170 | 109 | 61 |
| 1990-05-20 | vs SLN | 34 | L 2-6 | 25-9 | 1 | 32,249 | Danny Jackson | Joe Magrane | Joe Magrane | Danny Jackson | | 172 | 115 | 57 |
| 1990-05-21 | @ CHN | 35 | W 4-3 | 26-9 | 1 | 31,476 | Jose Rijo | Greg Maddux | Jose Rijo | Greg Maddux | Randy Myers | 176 | 118 | 58 |
| 1990-05-22 | @ CHN | 36 | L 1-2 | 26-10 | 1 | 29,860 | Tom Browning | Mike Bielecki | Bill Long | Scott Scudder | | 177 | 120 | 57 |
| 1990-05-24 | @ MON | 37 | W 7-1 | 27-10 | 1 | 14,562 | Ron Robinson | Kevin Gross | Ron Robinson | Kevin Gross | | 184 | 121 | 63 |
| 1990-05-25 | @ MON | 38 | W 5-0 | 28-10 | 1 | 17,058 | Jack Armstrong | Dennis Martinez | Jack Armstrong | Dennis Martinez | | 189 | 121 | 68 |
| 1990-05-26 | @ MON | 39 | W 5-3 | 29-10 | 1 | 14,653 | Danny Jackson | Zane Smith | Rob Dibble | Tim Burke | Randy Myers | 194 | 124 | 70 |
| 1990-05-27 | @ MON | 40 | L 3-5 | 29-11 | 1 | 30,183 | Jose Rijo | Mark Gardner | Drew Hall | Tim Birtsas | Tim Burke | 197 | 129 | 68 |
| 1990-05-29 | vs NYN | 41 | W 2-1 | 30-11 | 1 | 29,156 | Tom Browning | Bob Ojeda | Tom Browning | Bob Ojeda | Randy Myers | 199 | 130 | 69 |
| 1990-05-31 | @ LAN | 42 | L 1-2 | 30-12 | 1 | 39,421 | Jack Armstrong | Mike Morgan | Don Aase | Norm Charlton | | 200 | 132 | 68 |
| 1990-06-01 | @ LAN | 43 | W 5-2 | 31-12 | 1 | 48,674 | Danny Jackson | John Wetteland | Danny Jackson | John Wetteland | Rob Dibble | 205 | 134 | 71 |
| 1990-06-02 | @ LAN | 44 | W 8-3 | 32-12 | 1 | 47,918 | Jose Rijo | Tim Belcher | Norm Charlton | Tim Crews | | 213 | 137 | 76 |
| 1990-06-03 | @ LAN | 45 | W 2-0 | 33-12 | 1 | 46,307 | Tom Browning | Fernando Valenzuela | Tom Browning | Fernando Valenzuela | Randy Myers | 215 | 137 | 78 |
| 1990-06-04 | @ SFN | 46 | L 1-10 | 33-13 | 1 | 16,233 | Ron Robinson | John Burkett | John Burkett | Ron Robinson | | 216 | 147 | 69 |
| 1990-06-05 | @ SFN | 47 | L 1-6 | 33-14 | 1 | 18,002 | Jack Armstrong | Scott Garrelts | Scott Garrelts | Jack Armstrong | Jeff Brantley | 217 | 153 | 64 |
| 1990-06-06 | @ SFN | 48 | L 2-3 | 33-15 | 1 | 30,136 | Danny Jackson | Don Robinson | Jeff Brantley | Rob Dibble | | 219 | 156 | 63 |
| 1990-06-07 | @ HOU | 49 | W 6-1 | 34-15 | 1 | 15,282 | Jose Rijo | Bill Gullickson | Jose Rijo | Bill Gullickson | | 225 | 157 | 68 |
| 1990-06-08 | @ HOU | 50 | L 1-3 | 34-16 | 1 | 23,453 | Tom Browning | Mike Scott | Mike Scott | Randy Myers | | 226 | 160 | 66 |
| 1990-06-09 | @ HOU | 51 | L 1-4 | 34-17 | 1 | 26,781 | Rick Mahler | Jim Clancy | Jim Clancy | Rick Mahler | Dave Smith | 227 | 164 | 63 |
| 1990-06-10 | @ HOU | 52 | L 2-4 | 34-18 | 1 | 19,076 | Jack Armstrong | Jim Deshaies | Danny Darwin | Jack Armstrong | | 229 | 168 | 61 |
| 1990-06-12 | vs ATL | 53 | L 3-8 | 34-20 | 1 | 0 | Danny Jackson | Tom Glavine | Tom Glavine | Danny Jackson | | 232 | 176 | 56 |
| 1990-06-12 | vs ATL | 54 | L 2-3 | 34-20 | 1 | 31,918 | Jose Rijo | Tommy Greene | Tommy Greene | Jose Rijo | Rick Luecken | 234 | 179 | 55 |
| 1990-06-13 | vs ATL | 55 | W 13-4 | 35-20 | 1 | 23,567 | Tom Browning | Steve Avery | Tom Browning | Steve Avery | | 247 | 183 | 64 |
| 1990-06-14 | vs ATL | 56 | W 4-3 | 36-20 | 1 | 19,847 | Rick Mahler | Charlie Leibrandt | Rob Dibble | Joe Boever | | 251 | 186 | 65 |
| 1990-06-15 | vs HOU | 57 | W 6-3 | 37-20 | 1 | 30,597 | Jack Armstrong | Jim Clancy | Jack Armstrong | Jim Clancy | Randy Myers | 257 | 189 | 68 |
| 1990-06-16 | vs HOU | 58 | W 6-2 | 38-20 | 1 | 36,495 | Danny Jackson | Jim Deshaies | Danny Jackson | Jim Deshaies | Rob Dibble | 263 | 191 | 72 |
| 1990-06-17 | vs HOU | 59 | W 7-1 | 39-20 | 1 | 37,650 | Jose Rijo | Mark Portugal | Jose Rijo | Mark Portugal | | 270 | 192 | 78 |
| 1990-06-19 | @ ATL | 60 | W 4-2 | 40-21 | 1 | 0 | Tom Browning | Steve Avery | Norm Charlton | Rick Luecken | Randy Myers | 274 | 194 | 80 |
| 1990-06-19 | @ ATL | 61 | L 0-3 | 40-21 | 1 | 16,205 | Rick Mahler | Charlie Leibrandt | Charlie Leibrandt | Rick Mahler | | 274 | 197 | 77 |
| 1990-06-20 | @ ATL | 62 | W 9-8 | 41-21 | 1 | 12,200 | Jack Armstrong | Tommy Greene | Randy Myers | Rick Luecken | | 283 | 205 | 78 |
| 1990-06-21 | @ ATL | 63 | L 3-4 | 41-22 | 1 | 11,204 | Danny Jackson | John Smoltz | John Smoltz | Rob Dibble | | 286 | 209 | 77 |
| 1990-06-22 | vs LAN | 64 | L 6-7 | 41-23 | 1 | 34,697 | Jose Rijo | Mike Morgan | Jay Howell | Randy Myers | Tim Crews | 292 | 216 | 76 |
| 1990-06-23 | vs LAN | 65 | W 11-6 | 42-23 | 1 | 46,201 | Tom Browning | Tim Belcher | Tom Browning | Tim Belcher | Tim Layana | 303 | 222 | 81 |
| 1990-06-24 | vs LAN | 66 | W 10-6 | 43-23 | 1 | 33,760 | Rick Mahler | Fernando Valenzuela | Rick Mahler | Fernando Valenzuela | Norm Charlton | 313 | 228 | 85 |
| 1990-06-25 | vs SFN | 67 | W 5-2 | 44-23 | 1 | 31,263 | Jack Armstrong | John Burkett | Jack Armstrong | John Burkett | Randy Myers | 318 | 230 | 88 |
| 1990-06-26 | vs SFN | 68 | W 3-2 | 45-23 | 1 | 37,626 | Danny Jackson | Scott Garrelts | Randy Myers | Mark Thurmond | | 321 | 232 | 89 |
| 1990-06-27 | vs SFN | 69 | L 3-8 | 45-24 | 1 | 42,543 | Tom Browning | Don Robinson | Don Robinson | Tom Browning | | 324 | 240 | 84 |
| 1990-06-28 | @ NYN | 70 | L 4-5 | 45-25 | 1 | 43,647 | Jose Rijo | Dwight Gooden | Dwight Gooden | Jose Rijo | John Franco | 328 | 245 | 83 |
| 1990-06-29 | @ NYN | 71 | L 2-4 | 45-26 | 1 | 43,555 | Rick Mahler | Bob Ojeda | Bob Ojeda | Rick Mahler | Jeff Innis | 330 | 249 | 81 |
| 1990-06-30 | @ NYN | 72 | W 7-4 | 46-26 | 1 | 49,128 | Jack Armstrong | David Cone | Norm Charlton | Jeff Musselman | Randy Myers | 337 | 253 | 84 |
| 1990-07-01 | @ NYN | 73 | L 2-3 | 46-27 | 1 | 42,907 | Danny Jackson | Ron Darling | John Franco | Norm Charlton | | 339 | 256 | 83 |
| 1990-07-03 | @ MON | 74 | W 2-0 | 47-27 | 1 | 14,944 | Tom Browning | Zane Smith | Tom Browning | Zane Smith | Randy Myers | 341 | 256 | 85 |
| 1990-07-04 | @ MON | 75 | L 3-5 | 47-28 | 1 | 15,827 | Scott Scudder | Dennis Martinez | Dennis Martinez | Scott Scudder | Dave J. Schmidt | 344 | 261 | 83 |
| 1990-07-05 | @ PHI | 76 | W 9-2 | 48-28 | 1 | 19,961 | Jack Armstrong | Ken Howell | Jack Armstrong | Ken Howell | | 353 | 263 | 90 |
| 1990-07-06 | @ PHI | 77 | W 4-1 | 49-28 | 1 | 28,501 | Danny Jackson | Jose De Jesus | Danny Jackson | Jose De Jesus | Randy Myers | 357 | 264 | 93 |
| 1990-07-07 | @ PHI | 78 | W 5-0 | 50-28 | 1 | 29,515 | Rick Mahler | Bruce Ruffin | Rick Mahler | Bruce Ruffin | | 362 | 264 | 98 |
| 1990-07-08 | @ PHI | 79 | L 3-4 | 50-29 | 1 | 31,602 | Tom Browning | Jeff Parrett | Darrel Akerfelds | Norm Charlton | | 365 | 268 | 97 |
| 1990-07-12 | vs NYN | 80 | L 3-10 | 51-30 | 1 | 0 | Rick Mahler | Dwight Gooden | Dwight Gooden | Norm Charlton | | 368 | 278 | 90 |
| 1990-07-12 | vs NYN | 81 | W 3-2 | 51-30 | 1 | 37,540 | Danny Jackson | Ron Darling | Danny Jackson | Ron Darling | Randy Myers | 371 | 280 | 91 |
| 1990-07-13 | vs NYN | 82 | W 4-2 | 52-30 | 1 | 35,336 | Tom Browning | Frank Viola | Tom Browning | Frank Viola | Randy Myers | 375 | 282 | 93 |
| 1990-07-14 | vs NYN | 83 | L 3-6 | 52-31 | 1 | 48,494 | Jack Armstrong | David Cone | David Cone | Jack Armstrong | John Franco | 378 | 288 | 90 |
| 1990-07-15 | vs NYN | 84 | W 2-1 | 53-31 | 1 | 40,533 | Norm Charlton | Sid Fernandez | Norm Charlton | Sid Fernandez | Randy Myers | 380 | 289 | 91 |
| 1990-07-16 | vs MON | 85 | W 8-3 | 54-31 | 1 | 25,521 | Chris Hammond | Zane Smith | Tim Layana | Zane Smith | | 388 | 292 | 96 |
| 1990-07-17 | vs MON | 86 | W 6-2 | 55-31 | 1 | 30,828 | Scott Scudder | Mark Gardner | Scott Scudder | Mark Gardner | | 394 | 294 | 100 |
| 1990-07-18 | vs MON | 87 | W 8-7 | 56-31 | 1 | 27,180 | Tom Browning | Dennis Martinez | Rick Mahler | Dave J. Schmidt | | 402 | 301 | 101 |
| 1990-07-19 | vs PHI | 88 | L 2-5 | 56-32 | 1 | 37,163 | Jack Armstrong | Pat Combs | Pat Combs | Jack Armstrong | Roger McDowell | 404 | 306 | 98 |
| 1990-07-20 | vs PHI | 89 | W 5-1 | 57-32 | 1 | 39,394 | Norm Charlton | Jeff Parrett | Norm Charlton | Jeff Parrett | Rob Dibble | 409 | 307 | 102 |
| 1990-07-21 | vs PHI | 90 | W 6-1 | 58-32 | 1 | 34,506 | Jose Rijo | Terry Mulholland | Jose Rijo | Terry Mulholland | Rick Mahler | 415 | 308 | 107 |
| 1990-07-22 | vs PHI | 91 | L 2-6 | 58-33 | 1 | 33,658 | Scott Scudder | Jose De Jesus | Jose De Jesus | Scott Scudder | | 417 | 314 | 103 |
| 1990-07-23 | @ SDN | 92 | W 9-2 | 59-33 | 1 | 18,238 | Tom Browning | Dennis Rasmussen | Tom Browning | Dennis Rasmussen | | 426 | 316 | 110 |
| 1990-07-24 | @ SDN | 93 | L 0-10 | 59-34 | 1 | 24,139 | Jack Armstrong | Bruce Hurst | Bruce Hurst | Jack Armstrong | | 426 | 326 | 100 |
| 1990-07-25 | @ SDN | 94 | L 1-2 | 59-36 | 1 | 0 | Norm Charlton | Ed Whitson | Ed Whitson | Norm Charlton | Craig Lefferts | 427 | 328 | 99 |
| 1990-07-25 | @ SDN | 95 | L 4-10 | 59-36 | 1 | 27,285 | Rick Mahler | Calvin Schiraldi | Calvin Schiraldi | Rick Mahler | | 431 | 338 | 93 |
| 1990-07-26 | @ SFN | 96 | L 3-4 | 59-37 | 1 | 34,684 | Jose Rijo | Trevor Wilson | Mark Thurmond | Jose Rijo | Jeff Brantley | 434 | 342 | 92 |
| 1990-07-27 | @ SFN | 97 | L 3-4 | 59-38 | 1 | 32,820 | Scott Scudder | Don Robinson | Don Robinson | Scott Scudder | | 437 | 346 | 91 |
| 1990-07-28 | @ SFN | 98 | L 2-3 | 59-39 | 1 | 48,161 | Tom Browning | John Burkett | Steve Bedrosian | Randy Myers | | 439 | 349 | 90 |
| 1990-07-29 | @ SFN | 99 | L 0-4 | 59-40 | 1 | 55,792 | Jack Armstrong | Scott Garrelts | Scott Garrelts | Jack Armstrong | | 439 | 353 | 86 |
| 1990-07-30 | @ LAN | 100 | L 1-4 | 59-41 | 1 | 43,664 | Norm Charlton | Mike Morgan | Mike Morgan | Norm Charlton | | 440 | 357 | 83 |
| 1990-07-31 | @ LAN | 101 | W 5-2 | 60-41 | 1 | 43,242 | Jose Rijo | Tim Belcher | Jose Rijo | Tim Belcher | Randy Myers | 445 | 359 | 86 |
| 1990-08-01 | @ SDN | 102 | W 6-3 | 61-41 | 1 | 11,317 | Scott Scudder | Andy Benes | Scott Scudder | Andy Benes | | 451 | 362 | 89 |
| 1990-08-02 | vs SDN | 103 | L 5-8 | 61-42 | 1 | 35,337 | Tom Browning | Dennis Rasmussen | Dennis Rasmussen | Tom Browning | | 456 | 370 | 86 |
| 1990-08-03 | vs SDN | 104 | L 2-3 | 61-43 | 1 | 34,733 | Jack Armstrong | Bruce Hurst | Greg Harris | Rob Dibble | Craig Lefferts | 458 | 373 | 85 |
| 1990-08-04 | vs SDN | 105 | L 3-7 | 61-44 | 1 | 37,410 | Norm Charlton | Ed Whitson | Greg Harris | Rick Mahler | | 461 | 380 | 81 |
| 1990-08-05 | vs SDN | 106 | W 6-2 | 62-44 | 1 | 38,789 | Jose Rijo | Calvin Schiraldi | Jose Rijo | Calvin Schiraldi | | 467 | 382 | 85 |
| 1990-08-07 | vs LAN | 107 | W 1-0 | 63-44 | 1 | 31,154 | Tom Browning | Jim Neidlinger | Tom Browning | Jim Neidlinger | Randy Myers | 468 | 382 | 86 |
| 1990-08-08 | vs LAN | 108 | L 2-4 | 63-45 | 1 | 30,700 | Scott Scudder | Fernando Valenzuela | Fernando Valenzuela | Scott Scudder | | 470 | 386 | 84 |
| 1990-08-09 | vs LAN | 109 | L 3-10 | 63-46 | 1 | 30,891 | Jack Armstrong | Ramon Martinez | Ramon Martinez | Jack Armstrong | | 473 | 396 | 77 |
| 1990-08-10 | vs SFN | 110 | W 7-0 | 64-46 | 1 | 48,685 | Norm Charlton | Don Robinson | Norm Charlton | Don Robinson | | 480 | 396 | 84 |
| 1990-08-11 | vs SFN | 111 | L 2-4 | 64-47 | 1 | 49,780 | Jose Rijo | John Burkett | John Burkett | Jose Rijo | Jeff Brantley | 482 | 400 | 82 |
| 1990-08-12 | vs SFN | 112 | W 6-4 | 65-47 | 1 | 40,134 | Tom Browning | Scott Garrelts | Tom Browning | Scott Garrelts | Randy Myers | 488 | 404 | 84 |
| 1990-08-13 | vs SFN | 113 | W 6-5 | 66-47 | 1 | 34,868 | Scott Scudder | Trevor Wilson | Tim Layana | Trevor Wilson | Randy Myers | 494 | 409 | 85 |
| 1990-08-14 | @ SLN | 114 | W 9-4 | 67-47 | 1 | 36,552 | Jack Armstrong | Jose DeLeon | Jack Armstrong | Jose DeLeon | Rick Mahler | 503 | 413 | 90 |
| 1990-08-15 | @ SLN | 115 | W 3-1 | 68-47 | 1 | 31,924 | Norm Charlton | Ken Hill | Rob Dibble | Tom Niedenfuer | Tim Layana | 506 | 414 | 92 |
| 1990-08-17 | vs PIT | 116 | L 1-7 | 68-49 | 1 | 0 | Jose Rijo | Mike York | Mike York | Jose Rijo | | 507 | 421 | 86 |
| 1990-08-17 | vs PIT | 117 | L 3-4 | 68-49 | 1 | 48,964 | Tom Browning | John Smiley | John Smiley | Tim Layana | Stan Belinda | 510 | 425 | 85 |
| 1990-08-18 | vs PIT | 118 | L 1-3 | 68-50 | 1 | 35,263 | Chris Hammond | Zane Smith | Zane Smith | Chris Hammond | Bob Kipper | 511 | 428 | 83 |
| 1990-08-19 | vs PIT | 119 | L 3-6 | 68-51 | 1 | 36,549 | Jack Armstrong | Doug Drabek | Doug Drabek | Jack Armstrong | Stan Belinda | 514 | 434 | 80 |
| 1990-08-20 | vs CHN | 120 | L 1-3 | 68-52 | 1 | 26,011 | Norm Charlton | Mike Bielecki | Mike Bielecki | Norm Charlton | Bill Long | 515 | 437 | 78 |
| 1990-08-21 | vs CHN | 121 | W 8-1 | 69-52 | 1 | 22,759 | Rick Mahler | Mike Harkey | Rick Mahler | Mike Harkey | | 523 | 438 | 85 |
| 1990-08-22 | vs CHN | 122 | W 4-1 | 70-52 | 1 | 28,707 | Jose Rijo | Jeff Pico | Jose Rijo | Jeff Pico | | 527 | 439 | 88 |
| 1990-08-23 | @ PIT | 123 | L 3-9 | 70-53 | 1 | 26,181 | Chris Hammond | Zane Smith | Zane Smith | Chris Hammond | | 530 | 448 | 82 |
| 1990-08-24 | @ PIT | 124 | W 4-3 | 71-53 | 1 | 48,205 | Jack Armstrong | Doug Drabek | Rob Dibble | Bob Kipper | Randy Myers | 534 | 451 | 83 |
| 1990-08-25 | @ PIT | 125 | W 6-1 | 72-53 | 1 | 43,679 | Norm Charlton | Bob Walk | Norm Charlton | Stan Belinda | | 540 | 452 | 88 |
| 1990-08-26 | @ PIT | 126 | W 6-2 | 73-53 | 1 | 43,174 | Rick Mahler | Randy Tomlin | Rick Mahler | Randy Tomlin | Rob Dibble | 546 | 454 | 92 |
| 1990-08-28 | vs SLN | 127 | W 2-1 | 74-53 | 1 | 25,846 | Jose Rijo | Joe Magrane | Jose Rijo | Joe Magrane | Randy Myers | 548 | 455 | 93 |
| 1990-08-29 | vs SLN | 128 | L 1-9 | 74-54 | 1 | 26,193 | Tom Browning | Bob Tewksbury | Bob Tewksbury | Tom Browning | | 549 | 464 | 85 |
| 1990-08-30 | @ CHN | 129 | W 6-5 | 75-54 | 1 | 30,778 | Danny Jackson | Mike Bielecki | Danny Jackson | Mike Bielecki | Randy Myers | 555 | 469 | 86 |
| 1990-08-31 | @ CHN | 130 | L 3-4 | 75-55 | 1 | 31,042 | Norm Charlton | Mike Harkey | Bill Long | Randy Myers | | 558 | 473 | 85 |
| 1990-09-01 | @ CHN | 131 | W 8-1 | 76-55 | 1 | 34,388 | Rick Mahler | Jose Nunez | Rick Mahler | Jose Nunez | | 566 | 474 | 92 |
| 1990-09-02 | @ CHN | 132 | W 6-2 | 77-55 | 1 | 35,043 | Jose Rijo | Greg Maddux | Jose Rijo | Greg Maddux | | 572 | 476 | 96 |
| 1990-09-03 | @ ATL | 133 | L 6-8 | 77-56 | 1 | 9,176 | Tom Browning | Steve Avery | Mark Grant | Tim Layana | Jeff Parrett | 578 | 484 | 94 |
| 1990-09-04 | @ ATL | 134 | L 4-7 | 77-57 | 1 | 4,463 | Danny Jackson | Tom Glavine | Tom Glavine | Danny Jackson | Kent Mercker | 582 | 491 | 91 |
| 1990-09-05 | @ SFN | 135 | W 5-3 | 78-57 | 1 | 22,071 | Norm Charlton | Don Robinson | Norm Charlton | Don Robinson | Rob Dibble | 587 | 494 | 93 |
| 1990-09-06 | @ SFN | 136 | L 2-6 | 78-58 | 1 | 16,271 | Rick Mahler | Scott Garrelts | Scott Garrelts | Rick Mahler | Steve Bedrosian | 589 | 500 | 89 |
| 1990-09-07 | @ LAN | 137 | L 1-3 | 78-59 | 1 | 47,720 | Jose Rijo | Jim Neidlinger | Jim Neidlinger | Jose Rijo | Jay Howell | 590 | 503 | 87 |
| 1990-09-08 | @ LAN | 138 | W 8-4 | 79-59 | 1 | 48,459 | Tom Browning | Fernando Valenzuela | Tom Browning | Fernando Valenzuela | Randy Myers | 598 | 507 | 91 |
| 1990-09-09 | @ LAN | 139 | L 4-6 | 79-60 | 1 | 41,740 | Danny Jackson | Ramon Martinez | Ramon Martinez | Danny Jackson | | 602 | 513 | 89 |
| 1990-09-11 | vs HOU | 140 | W 5-3 | 80-60 | 1 | 19,570 | Norm Charlton | Jim Deshaies | Norm Charlton | Jim Deshaies | Randy Myers | 607 | 516 | 91 |
| 1990-09-12 | vs HOU | 141 | L 1-3 | 80-61 | 1 | 17,083 | Jose Rijo | Danny Darwin | Juan Agosto | Tim Layana | Brian Meyer | 608 | 519 | 89 |
| 1990-09-13 | vs HOU | 142 | W 7-5 | 81-61 | 1 | 17,820 | Rick Mahler | Bill Gullickson | Rob Dibble | Brian Meyer | | 615 | 524 | 91 |
| 1990-09-14 | vs LAN | 143 | L 4-10 | 81-62 | 1 | 31,944 | Tom Browning | Fernando Valenzuela | Fernando Valenzuela | Tom Browning | | 619 | 534 | 85 |
| 1990-09-15 | vs LAN | 144 | L 0-3 | 81-63 | 1 | 45,751 | Danny Jackson | Ramon Martinez | Ramon Martinez | Danny Jackson | | 619 | 537 | 82 |
| 1990-09-16 | vs LAN | 145 | W 9-5 | 82-63 | 1 | 35,546 | Norm Charlton | Mike Morgan | Scott Scudder | Mike Morgan | | 628 | 542 | 86 |
| 1990-09-17 | vs SFN | 146 | W 4-0 | 83-63 | 1 | 24,872 | Jose Rijo | Scott Garrelts | Jose Rijo | Scott Garrelts | | 632 | 542 | 90 |
| 1990-09-18 | vs SFN | 147 | L 3-5 | 83-64 | 1 | 26,142 | Tom Browning | John Burkett | John Burkett | Tom Browning | Steve Bedrosian | 635 | 547 | 88 |
| 1990-09-19 | @ HOU | 148 | L 2-5 | 83-65 | 1 | 8,570 | Danny Jackson | Mark Portugal | Mark Portugal | Danny Jackson | Juan Agosto | 637 | 552 | 85 |
| 1990-09-20 | @ HOU | 149 | L 2-3 | 83-66 | 1 | 7,895 | Norm Charlton | Mike Scott | Xavier Hernandez | Randy Myers | | 639 | 555 | 84 |
| 1990-09-21 | @ SDN | 150 | W 10-1 | 84-66 | 1 | 44,717 | Jose Rijo | Dennis Rasmussen | Jose Rijo | Dennis Rasmussen | | 649 | 556 | 93 |
| 1990-09-22 | @ SDN | 151 | W 6-4 | 86-66 | 1 | 0 | Scott Scudder | Bruce Hurst | Rob Dibble | Greg Harris | Randy Myers | 655 | 560 | 95 |
| 1990-09-22 | @ SDN | 152 | W 9-5 | 86-66 | 1 | 27,524 | Tom Browning | Atlee Hammaker | Tom Browning | Atlee Hammaker | Rick Mahler | 664 | 565 | 99 |
| 1990-09-23 | @ SDN | 153 | W 9-2 | 87-66 | 1 | 15,410 | Danny Jackson | Ed Whitson | Danny Jackson | Ed Whitson | | 673 | 567 | 106 |
| 1990-09-25 | vs ATL | 154 | L 0-10 | 87-67 | 1 | 25,095 | Norm Charlton | Tom Glavine | Tom Glavine | Norm Charlton | | 673 | 577 | 96 |
| 1990-09-26 | vs ATL | 155 | W 5-2 | 88-67 | 1 | 22,278 | Jose Rijo | John Smoltz | Jose Rijo | John Smoltz | | 678 | 579 | 99 |
| 1990-09-27 | vs ATL | 156 | W 4-2 | 89-67 | 1 | 20,757 | Tom Browning | Steve Avery | Tom Browning | Steve Avery | Rob Dibble | 682 | 581 | 101 |
| 1990-09-28 | vs SDN | 157 | L 1-2 | 89-68 | 1 | 35,399 | Danny Jackson | Bruce Hurst | Bruce Hurst | Randy Myers | | 683 | 583 | 100 |
| 1990-09-29 | vs SDN | 158 | L 1-3 | 89-69 | 1 | 37,133 | Norm Charlton | Ed Whitson | Ed Whitson | Norm Charlton | | 684 | 586 | 98 |
| 1990-09-30 | vs SDN | 159 | L 0-3 | 89-70 | 1 | 32,407 | Jose Rijo | Derek Lilliquist | Derek Lilliquist | Jose Rijo | Greg Harris | 684 | 589 | 95 |
| 1990-10-01 | vs HOU | 160 | W 4-3 | 90-70 | 1 | 12,064 | Tom Browning | Jim Deshaies | Randy Myers | Brian Meyer | | 688 | 592 | 96 |
| 1990-10-02 | vs HOU | 161 | W 3-2 | 91-70 | 1 | 11,202 | Jack Armstrong | Xavier Hernandez | Scott Scudder | Xavier Hernandez | Randy Myers | 691 | 594 | 97 |
| 1990-10-03 | vs HOU | 162 | L 2-3 | 91-71 | 1 | 10,150 | Danny Jackson | Randy Hennis | Dave Smith | Tim Birtsas | | 693 | 597 | 96 |