| 1983-04-06 | vs MON | 1 | L 0-3 | 0-1 | 4 | 4,802 | Fergie Jenkins | Steve Rogers | Steve Rogers | Fergie Jenkins | | 0 | 3 | -3 |
| 1983-04-07 | vs MON | 2 | L 3-7 | 0-2 | 4 | 10,015 | Dickie Noles | Bill Gullickson | Bill Gullickson | Dickie Noles | | 3 | 10 | -7 |
| 1983-04-08 | @ CIN | 3 | L 3-7 | 0-3 | 4 | 7,396 | Steve Trout | Mario Soto | Mario Soto | Steve Trout | | 6 | 17 | -11 |
| 1983-04-09 | @ CIN | 4 | L 4-8 | 0-4 | 6 | 8,262 | Chuck Rainey | Frank Pastore | Frank Pastore | Chuck Rainey | | 10 | 25 | -15 |
| 1983-04-10 | @ CIN | 5 | L 2-7 | 0-5 | 6 | 10,262 | Fergie Jenkins | Bruce Berenyi | Bruce Berenyi | Fergie Jenkins | | 12 | 32 | -20 |
| 1983-04-11 | @ CIN | 6 | L 1-5 | 0-6 | 6 | 7,095 | Dickie Noles | Joe Price | Joe Price | Dickie Noles | | 13 | 37 | -24 |
| 1983-04-12 | @ MON | 7 | W 5-0 | 1-6 | 6 | 40,088 | Steve Trout | Bill Gullickson | Steve Trout | Bill Gullickson | | 18 | 37 | -19 |
| 1983-04-14 | @ MON | 8 | L 3-4 | 1-7 | 6 | 8,661 | Chuck Rainey | Scott Sanderson | Scott Sanderson | Chuck Rainey | Jeff Reardon | 21 | 41 | -20 |
| 1983-04-16 | @ PIT | 9 | W 6-5 | 2-7 | 6 | 5,494 | Fergie Jenkins | Larry McWilliams | Guillermo Hernandez | Larry McWilliams | Lee Smith | 27 | 46 | -19 |
| 1983-04-17 | @ PIT | 10 | L 0-7 | 2-8 | 6 | 14,285 | Steve Trout | John Candelaria | John Candelaria | Steve Trout | Rick Rhoden | 27 | 53 | -26 |
| 1983-04-18 | @ PHI | 11 | L 2-8 | 2-9 | 6 | 13,832 | Paul Moskau | John Denny | John Denny | Paul Moskau | | 29 | 61 | -32 |
| 1983-04-20 | @ PHI | 12 | L 0-2 | 2-10 | 6 | 11,271 | Chuck Rainey | Steve Carlton | Steve Carlton | Chuck Rainey | | 29 | 63 | -34 |
| 1983-04-22 | vs SFN | 13 | W 7-2 | 3-10 | 6 | 6,630 | Fergie Jenkins | Bill Laskey | Fergie Jenkins | Bill Laskey | Guillermo Hernandez | 36 | 65 | -29 |
| 1983-04-23 | vs SFN | 14 | L 0-5 | 3-11 | 6 | 12,859 | Steve Trout | Atlee Hammaker | Atlee Hammaker | Steve Trout | | 36 | 70 | -34 |
| 1983-04-24 | vs SFN | 15 | W 5-1 | 4-11 | 6 | 9,388 | Paul Moskau | Andy McGaffigan | Paul Moskau | Andy McGaffigan | Lee Smith | 41 | 71 | -30 |
| 1983-04-26 | vs SDN | 16 | L 8-10 | 4-12 | 6 | 9,835 | Chuck Rainey | John Montefusco | John Montefusco | Craig Lefferts | Luis DeLeon | 49 | 81 | -32 |
| 1983-04-27 | vs SDN | 17 | W 5-4 | 5-12 | 6 | 6,332 | Fergie Jenkins | Dave Dravecky | Bill Campbell | Gary Lucas | | 54 | 85 | -31 |
| 1983-04-28 | vs SDN | 18 | L 1-3 | 5-13 | 6 | 3,383 | Steve Trout | Eric Show | Eric Show | Steve Trout | Luis DeLeon | 55 | 88 | -33 |
| 1983-04-29 | vs LAN | 19 | L 3-4 | 5-14 | 6 | 9,391 | Paul Moskau | Bob Welch | Alejandro Pena | Bill Campbell | | 58 | 92 | -34 |
| 1983-04-30 | vs LAN | 20 | W 7-2 | 6-14 | 6 | 26,069 | Chuck Rainey | Fernando Valenzuela | Chuck Rainey | Fernando Valenzuela | | 65 | 94 | -29 |
| 1983-05-01 | vs LAN | 21 | L 2-3 | 6-15 | 6 | 11,295 | Fergie Jenkins | Burt Hooton | Dave Stewart | Fergie Jenkins | | 67 | 97 | -30 |
| 1983-05-03 | @ SFN | 22 | L 4-5 | 6-16 | 6 | 6,483 | Steve Trout | Bill Laskey | Bill Laskey | Steve Trout | | 71 | 102 | -31 |
| 1983-05-04 | @ SFN | 23 | L 4-7 | 6-17 | 6 | 7,921 | Paul Moskau | Atlee Hammaker | Atlee Hammaker | Paul Moskau | | 75 | 109 | -34 |
| 1983-05-06 | @ SDN | 24 | W 3-2 | 7-17 | 6 | 18,373 | Chuck Rainey | Tim Lollar | Chuck Rainey | Tim Lollar | Lee Smith | 78 | 111 | -33 |
| 1983-05-07 | @ SDN | 25 | W 6-4 | 8-17 | 5 | 47,208 | Guillermo Hernandez | John Montefusco | Bill Campbell | Gary Lucas | | 84 | 115 | -31 |
| 1983-05-08 | @ SDN | 26 | L 3-5 | 8-18 | 6 | 41,522 | Steve Trout | Dave Dravecky | Dave Dravecky | Warren Brusstar | | 87 | 120 | -33 |
| 1983-05-09 | @ LAN | 27 | L 3-4 | 8-19 | 6 | 45,587 | Fergie Jenkins | Alejandro Pena | Dave Stewart | Lee Smith | | 90 | 124 | -34 |
| 1983-05-10 | @ LAN | 28 | W 3-2 | 9-19 | 5 | 43,626 | Paul Moskau | Bob Welch | Mike Proly | Bob Welch | Lee Smith | 93 | 126 | -33 |
| 1983-05-12 | vs PHI | 29 | W 6-3 | 10-19 | 5 | 8,162 | Chuck Rainey | Dick Ruthven | Chuck Rainey | Dick Ruthven | Bill Campbell | 99 | 129 | -30 |
| 1983-05-13 | vs PHI | 30 | W 10-2 | 11-19 | 5 | 11,254 | Steve Trout | Larry Christenson | Steve Trout | Larry Christenson | | 109 | 131 | -22 |
| 1983-05-15 | vs PHI | 31 | L 3-5 | 11-20 | 5 | 19,467 | Fergie Jenkins | Steve Carlton | Steve Carlton | Lee Smith | Ron Reed | 112 | 136 | -24 |
| 1983-05-17 | vs ATL | 32 | W 4-3 | 12-20 | 5 | 9,041 | Chuck Rainey | Pascual Perez | Chuck Rainey | Pascual Perez | Mike Proly | 116 | 139 | -23 |
| 1983-05-18 | vs ATL | 33 | W 5-3 | 13-20 | 5 | 8,403 | Steve Trout | Rick Behenna | Steve Trout | Rick Behenna | Bill Campbell | 121 | 142 | -21 |
| 1983-05-20 | vs CIN | 34 | L 5-9 | 13-21 | 6 | 9,552 | Fergie Jenkins | Ted Power | Bill Scherrer | Mike Proly | | 126 | 151 | -25 |
| 1983-05-21 | vs CIN | 35 | W 8-4 | 14-21 | 5 | 21,339 | Paul Moskau | Charlie Puleo | Paul Moskau | Charlie Puleo | | 134 | 155 | -21 |
| 1983-05-22 | vs CIN | 36 | L 3-4 | 14-22 | 5 | 13,083 | Chuck Rainey | Mario Soto | Mario Soto | Chuck Rainey | | 137 | 159 | -22 |
| 1983-05-23 | @ HOU | 37 | L 2-3 | 14-23 | 6 | 8,816 | Steve Trout | Joe Niekro | Joe Niekro | Steve Trout | Frank DiPino | 139 | 162 | -23 |
| 1983-05-24 | @ HOU | 38 | W 5-4 | 15-23 | 5 | 8,859 | Dick Ruthven | Mike Scott | Dick Ruthven | Mike Scott | Bill Campbell | 144 | 166 | -22 |
| 1983-05-25 | @ HOU | 39 | L 0-1 | 15-24 | 6 | 8,833 | Craig Lefferts | Mike Madden | Mike Madden | Craig Lefferts | Bill Dawley | 144 | 167 | -23 |
| 1983-05-26 | @ ATL | 40 | W 5-1 | 16-24 | 6 | 13,444 | Paul Moskau | Phil Niekro | Paul Moskau | Phil Niekro | | 149 | 168 | -19 |
| 1983-05-27 | @ ATL | 41 | W 8-6 | 17-24 | 5 | 25,838 | Chuck Rainey | Pascual Perez | Warren Brusstar | Rick Behenna | Lee Smith | 157 | 174 | -17 |
| 1983-05-28 | @ ATL | 42 | L 4-6 | 17-25 | 5 | 40,041 | Steve Trout | Pete Falcone | Donnie Moore | Mike Proly | Steve Bedrosian | 161 | 180 | -19 |
| 1983-05-29 | @ ATL | 43 | L 2-6 | 17-26 | 6 | 29,025 | Dick Ruthven | Rick Camp | Rick Camp | Dick Ruthven | Terry Forster | 163 | 186 | -23 |
| 1983-05-30 | vs HOU | 44 | L 7-9 | 17-27 | 6 | 26,487 | Fergie Jenkins | Mike LaCoss | Bill Dawley | Bill Campbell | Frank DiPino | 170 | 195 | -25 |
| 1983-05-31 | vs HOU | 45 | L 10-12 | 17-28 | 6 | 9,595 | Paul Moskau | Vern Ruhle | Frank LaCorte | Craig Lefferts | Dave Smith | 180 | 207 | -27 |
| 1983-06-01 | vs HOU | 46 | W 3-2 | 18-28 | 5 | 8,320 | Chuck Rainey | Bob Knepper | Chuck Rainey | Bob Knepper | Lee Smith | 183 | 209 | -26 |
| 1983-06-02 | vs PIT | 47 | W 3-2 | 19-28 | 5 | 6,589 | Steve Trout | Rick Rhoden | Steve Trout | Rick Rhoden | Lee Smith | 186 | 211 | -25 |
| 1983-06-03 | vs PIT | 48 | W 9-3 | 20-28 | 4 | 6,213 | Dick Ruthven | Larry McWilliams | Dick Ruthven | Rod Scurry | | 195 | 214 | -19 |
| 1983-06-04 | vs PIT | 49 | W 5-2 | 21-28 | 4 | 30,110 | Fergie Jenkins | Jim Bibby | Fergie Jenkins | Jim Bibby | Bill Campbell | 200 | 216 | -16 |
| 1983-06-05 | vs PIT | 50 | W 3-1 | 22-28 | 4 | 22,649 | Craig Lefferts | Lee Tunnell | Craig Lefferts | Lee Tunnell | Lee Smith | 203 | 217 | -14 |
| 1983-06-07 | vs NYN | 51 | W 6-1 | 23-28 | 4 | 13,651 | Chuck Rainey | Tom Seaver | Chuck Rainey | Jesse Orosco | Bill Campbell | 209 | 218 | -9 |
| 1983-06-08 | vs NYN | 52 | W 2-1 | 24-28 | 4 | 14,284 | Steve Trout | Mike Torrez | Lee Smith | Mike Torrez | | 211 | 219 | -8 |
| 1983-06-09 | vs NYN | 53 | L 4-6 | 24-29 | 4 | 11,471 | Dick Ruthven | Ed Lynch | Jesse Orosco | Mike Proly | | 215 | 225 | -10 |
| 1983-06-10 | vs SLN | 54 | W 7-0 | 25-29 | 4 | 37,024 | Fergie Jenkins | John Stuper | Fergie Jenkins | John Stuper | | 222 | 225 | -3 |
| 1983-06-11 | vs SLN | 55 | L 4-5 | 25-30 | 4 | 40,448 | Craig Lefferts | John Martin | Bruce Sutter | Lee Smith | Joaquin Andujar | 226 | 230 | -4 |
| 1983-06-12 | vs SLN | 56 | W 6-3 | 26-30 | 4 | 38,635 | Chuck Rainey | Bob Forsch | Chuck Rainey | Bob Forsch | Lee Smith | 232 | 233 | -1 |
| 1983-06-13 | @ NYN | 57 | W 7-3 | 27-30 | 4 | 9,792 | Steve Trout | Mike Torrez | Steve Trout | Mike Torrez | Craig Lefferts | 239 | 236 | 3 |
| 1983-06-14 | @ NYN | 58 | L 3-4 | 27-31 | 4 | 9,650 | Dick Ruthven | Ed Lynch | Doug Sisk | Lee Smith | | 242 | 240 | 2 |
| 1983-06-15 | @ NYN | 59 | W 7-4 | 28-31 | 4 | 11,631 | Fergie Jenkins | Craig Swan | Lee Smith | Scott Holman | | 249 | 244 | 5 |
| 1983-06-17 | @ SLN | 60 | L 2-7 | 28-32 | 4 | 41,093 | Chuck Rainey | Bob Forsch | Bob Forsch | Chuck Rainey | | 251 | 251 | 0 |
| 1983-06-18 | @ SLN | 61 | W 10-1 | 29-32 | 4 | 49,898 | Steve Trout | Joaquin Andujar | Steve Trout | Joaquin Andujar | | 261 | 252 | 9 |
| 1983-06-19 | @ SLN | 62 | W 4-1 | 30-32 | 4 | 38,995 | Dick Ruthven | Dave LaPoint | Dick Ruthven | Dave LaPoint | | 265 | 253 | 12 |
| 1983-06-20 | @ PIT | 63 | L 4-5 | 30-34 | 4 | 0 | Fergie Jenkins | Lee Tunnell | Kent Tekulve | Bill Campbell | | 269 | 258 | 11 |
| 1983-06-20 | @ PIT | 64 | L 5-6 | 30-34 | 4 | 5,839 | Craig Lefferts | Jim Bibby | Don Robinson | Bill Campbell | | 274 | 264 | 10 |
| 1983-06-21 | @ PIT | 65 | L 4-8 | 30-35 | 4 | 6,363 | Dickie Noles | Rick Rhoden | Rick Rhoden | Dickie Noles | | 278 | 272 | 6 |
| 1983-06-22 | @ PIT | 66 | L 2-5 | 30-36 | 4 | 8,666 | Chuck Rainey | John Candelaria | John Candelaria | Chuck Rainey | Cecilio Guante | 280 | 277 | 3 |
| 1983-06-23 | @ PIT | 67 | L 2-5 | 30-37 | 4 | 8,296 | Steve Trout | Larry McWilliams | Larry McWilliams | Steve Trout | | 282 | 282 | 0 |
| 1983-06-24 | @ MON | 68 | L 3-4 | 30-38 | 5 | 28,795 | Dick Ruthven | Steve Rogers | Steve Rogers | Dick Ruthven | Jeff Reardon | 285 | 286 | -1 |
| 1983-06-25 | @ MON | 69 | W 2-1 | 31-38 | 5 | 31,089 | Fergie Jenkins | Ray Burris | Warren Brusstar | Chris Welsh | | 287 | 287 | 0 |
| 1983-06-26 | @ MON | 70 | W 9-5 | 32-38 | 5 | 32,499 | Dickie Noles | Randy Lerch | Dickie Noles | Randy Lerch | | 296 | 292 | 4 |
| 1983-06-27 | @ MON | 71 | L 1-3 | 32-39 | 5 | 20,358 | Chuck Rainey | Charlie Lea | Charlie Lea | Chuck Rainey | | 297 | 295 | 2 |
| 1983-06-28 | vs PIT | 72 | W 8-7 | 33-39 | 5 | 11,832 | Steve Trout | Larry McWilliams | Craig Lefferts | Kent Tekulve | | 305 | 302 | 3 |
| 1983-06-29 | vs PIT | 73 | W 5-0 | 34-39 | 4 | 28,504 | Dick Ruthven | Jim Bibby | Dick Ruthven | Jim Bibby | | 310 | 302 | 8 |
| 1983-06-30 | vs PIT | 74 | W 4-3 | 35-39 | 4 | 17,261 | Fergie Jenkins | Rick Rhoden | Lee Smith | Manny Sarmiento | | 314 | 305 | 9 |
| 1983-07-01 | vs MON | 75 | W 7-5 | 36-39 | 4 | 20,694 | Dickie Noles | Randy Lerch | Dickie Noles | Randy Lerch | Lee Smith | 321 | 310 | 11 |
| 1983-07-02 | vs MON | 76 | W 5-2 | 37-39 | 4 | 32,718 | Chuck Rainey | Charlie Lea | Chuck Rainey | Charlie Lea | Warren Brusstar | 326 | 312 | 14 |
| 1983-07-03 | vs MON | 77 | W 7-4 | 38-39 | 4 | 40,522 | Steve Trout | Bill Gullickson | Steve Trout | Bill Gullickson | Bill Campbell | 333 | 316 | 17 |
| 1983-07-04 | vs MON | 78 | L 3-6 | 38-41 | 4 | 0 | Dick Ruthven | Steve Rogers | Steve Rogers | Dick Ruthven | Dan Schatzeder | 336 | 322 | 14 |
| 1983-07-04 | vs MON | 79 | L 2-4 | 38-41 | 4 | 39,394 | Fergie Jenkins | Scott Sanderson | Scott Sanderson | Fergie Jenkins | Jeff Reardon | 338 | 326 | 12 |
| 1983-07-08 | @ SFN | 80 | L 1-4 | 38-42 | 4 | 10,094 | Dickie Noles | Bill Laskey | Bill Laskey | Dickie Noles | Gary Lavelle | 339 | 330 | 9 |
| 1983-07-09 | @ SFN | 81 | W 4-2 | 39-42 | 4 | 13,335 | Chuck Rainey | Mark Davis | Chuck Rainey | Mark Davis | Lee Smith | 343 | 332 | 11 |
| 1983-07-10 | @ SFN | 82 | L 8-10 | 39-44 | 4 | 0 | Steve Trout | Mike Krukow | Gary Lavelle | Bill Campbell | Renie Martin | 351 | 342 | 9 |
| 1983-07-10 | @ SFN | 83 | L 2-4 | 39-44 | 4 | 26,563 | Dick Ruthven | Atlee Hammaker | Atlee Hammaker | Dick Ruthven | | 353 | 346 | 7 |
| 1983-07-11 | @ SDN | 84 | L 5-6 | 39-45 | 4 | 22,418 | Fergie Jenkins | Ed Whitson | John Montefusco | Fergie Jenkins | Sid Monge | 358 | 352 | 6 |
| 1983-07-12 | @ SDN | 85 | L 3-5 | 39-46 | 5 | 13,850 | Dickie Noles | Eric Show | Eric Show | Dickie Noles | | 361 | 357 | 4 |
| 1983-07-13 | @ SDN | 86 | L 4-5 | 39-47 | 5 | 15,503 | Chuck Rainey | Tim Lollar | Tim Lollar | Chuck Rainey | Gary Lucas | 365 | 362 | 3 |
| 1983-07-14 | @ LAN | 87 | L 4-8 | 39-48 | 5 | 40,939 | Steve Trout | Alejandro Pena | Alejandro Pena | Steve Trout | Tom Niedenfuer | 369 | 370 | -1 |
| 1983-07-15 | @ LAN | 88 | W 8-4 | 40-48 | 5 | 49,609 | Dick Ruthven | Burt Hooton | Dick Ruthven | Burt Hooton | Lee Smith | 377 | 374 | 3 |
| 1983-07-16 | @ LAN | 89 | L 4-7 | 40-49 | 5 | 48,849 | Fergie Jenkins | Fernando Valenzuela | Fernando Valenzuela | Fergie Jenkins | Tom Niedenfuer | 381 | 381 | 0 |
| 1983-07-17 | @ LAN | 90 | W 10-0 | 41-49 | 5 | 44,852 | Dickie Noles | Bob Welch | Dickie Noles | Bob Welch | | 391 | 381 | 10 |
| 1983-07-19 | vs SFN | 91 | L 3-4 | 41-50 | 5 | 19,400 | Chuck Rainey | Mark Davis | Greg Minton | Bill Campbell | | 394 | 385 | 9 |
| 1983-07-20 | vs SFN | 92 | L 3-4 | 41-51 | 5 | 27,135 | Steve Trout | Mike Krukow | Greg Minton | Lee Smith | | 397 | 389 | 8 |
| 1983-07-21 | vs SFN | 93 | W 3-2 | 42-51 | 5 | 25,664 | Dick Ruthven | Atlee Hammaker | Dick Ruthven | Atlee Hammaker | Lee Smith | 400 | 391 | 9 |
| 1983-07-22 | vs SDN | 94 | W 7-3 | 43-51 | 5 | 26,281 | Fergie Jenkins | Ed Whitson | Craig Lefferts | Gary Lucas | | 407 | 394 | 13 |
| 1983-07-23 | vs SDN | 95 | L 2-4 | 43-52 | 5 | 32,224 | Dickie Noles | Eric Show | Eric Show | Dickie Noles | John Montefusco | 409 | 398 | 11 |
| 1983-07-24 | vs SDN | 96 | W 5-2 | 44-52 | 5 | 34,127 | Chuck Rainey | Tim Lollar | Chuck Rainey | Tim Lollar | Lee Smith | 414 | 400 | 14 |
| 1983-07-25 | vs LAN | 97 | W 9-3 | 45-52 | 5 | 25,135 | Steve Trout | Burt Hooton | Steve Trout | Burt Hooton | | 423 | 403 | 20 |
| 1983-07-26 | vs LAN | 98 | L 2-5 | 45-53 | 5 | 35,391 | Dick Ruthven | Fernando Valenzuela | Fernando Valenzuela | Dick Ruthven | | 425 | 408 | 17 |
| 1983-07-27 | vs LAN | 99 | W 2-1 | 46-53 | 5 | 30,951 | Fergie Jenkins | Bob Welch | Lee Smith | Bob Welch | | 427 | 409 | 18 |
| 1983-07-29 | @ PHI | 100 | L 2-3 | 46-54 | 5 | 32,445 | Dickie Noles | Kevin Gross | Al Holland | Lee Smith | | 429 | 412 | 17 |
| 1983-07-30 | @ PHI | 101 | W 4-3 | 47-55 | 5 | 0 | Chuck Rainey | Marty Bystrom | Bill Campbell | Guillermo Hernandez | Lee Smith | 433 | 415 | 18 |
| 1983-07-30 | @ PHI | 102 | L 3-4 | 47-55 | 5 | 44,332 | Steve Trout | Charles Hudson | Charles Hudson | Steve Trout | Al Holland | 436 | 419 | 17 |
| 1983-07-31 | @ PHI | 103 | L 2-5 | 47-56 | 5 | 36,011 | Dick Ruthven | John Denny | John Denny | Dick Ruthven | Guillermo Hernandez | 438 | 424 | 14 |
| 1983-08-01 | @ PHI | 104 | L 1-2 | 47-57 | 5 | 27,739 | Fergie Jenkins | Steve Carlton | Steve Carlton | Bill Campbell | | 439 | 426 | 13 |
| 1983-08-02 | @ SLN | 105 | W 5-3 | 48-57 | 5 | 35,513 | Dickie Noles | Neil Allen | Dickie Noles | Neil Allen | Lee Smith | 444 | 429 | 15 |
| 1983-08-03 | @ SLN | 106 | W 4-0 | 49-57 | 5 | 33,118 | Chuck Rainey | Bob Forsch | Chuck Rainey | Bob Forsch | Bill Campbell | 448 | 429 | 19 |
| 1983-08-04 | @ SLN | 107 | W 9-6 | 50-57 | 5 | 30,187 | Steve Trout | Dave LaPoint | Steve Trout | Dave LaPoint | Lee Smith | 457 | 435 | 22 |
| 1983-08-05 | vs NYN | 108 | L 4-9 | 50-58 | 5 | 21,163 | Dick Ruthven | Mike Torrez | Jesse Orosco | Mike Proly | | 461 | 444 | 17 |
| 1983-08-06 | vs NYN | 109 | L 1-4 | 50-59 | 5 | 34,229 | Fergie Jenkins | Walt Terrell | Walt Terrell | Fergie Jenkins | Carlos Diaz | 462 | 448 | 14 |
| 1983-08-07 | vs NYN | 110 | L 4-6 | 50-60 | 5 | 25,748 | Dickie Noles | Craig Swan | Doug Sisk | Lee Smith | Jesse Orosco | 466 | 454 | 12 |
| 1983-08-09 | vs SLN | 111 | W 5-3 | 51-60 | 5 | 31,125 | Chuck Rainey | Bob Forsch | Chuck Rainey | Bob Forsch | Lee Smith | 471 | 457 | 14 |
| 1983-08-10 | vs SLN | 112 | L 5-9 | 51-61 | 5 | 30,301 | Steve Trout | Dave LaPoint | Dave Rucker | Dickie Noles | John Stuper | 476 | 466 | 10 |
| 1983-08-11 | vs SLN | 113 | W 10-5 | 52-61 | 5 | 23,480 | Dick Ruthven | Danny Cox | Dick Ruthven | Danny Cox | | 486 | 471 | 15 |
| 1983-08-12 | @ NYN | 114 | L 0-2 | 52-62 | 5 | 8,976 | Fergie Jenkins | Walt Terrell | Walt Terrell | Fergie Jenkins | | 486 | 473 | 13 |
| 1983-08-13 | @ NYN | 115 | L 1-5 | 52-63 | 5 | 37,407 | Rich Bordi | Tom Seaver | Tom Seaver | Rich Bordi | Jesse Orosco | 487 | 478 | 9 |
| 1983-08-14 | @ NYN | 116 | L 2-5 | 52-64 | 5 | 17,551 | Chuck Rainey | Ed Lynch | Ed Lynch | Chuck Rainey | Jesse Orosco | 489 | 483 | 6 |
| 1983-08-15 | vs PHI | 117 | L 0-5 | 52-65 | 5 | 23,361 | Steve Trout | Steve Carlton | Steve Carlton | Steve Trout | | 489 | 488 | 1 |
| 1983-08-16 | vs PHI | 118 | W 10-1 | 53-66 | 5 | 0 | Dick Ruthven | Marty Bystrom | Dick Ruthven | Marty Bystrom | | 499 | 489 | 10 |
| 1983-08-16 | vs PHI | 119 | L 2-6 | 53-66 | 5 | 28,124 | Craig Lefferts | Kevin Gross | Guillermo Hernandez | Mike Proly | Al Holland | 501 | 495 | 6 |
| 1983-08-18 | vs ATL | 120 | W 3-0 | 54-66 | 5 | 19,535 | Fergie Jenkins | Pete Falcone | Fergie Jenkins | Pete Falcone | Lee Smith | 504 | 495 | 9 |
| 1983-08-19 | vs ATL | 121 | L 3-5 | 54-67 | 5 | 16,701 | Chuck Rainey | Phil Niekro | Phil Niekro | Chuck Rainey | Steve Bedrosian | 507 | 500 | 7 |
| 1983-08-20 | vs ATL | 122 | L 2-9 | 54-68 | 5 | 36,043 | Steve Trout | Craig McMurtry | Ken Dayley | Steve Trout | Terry Forster | 509 | 509 | 0 |
| 1983-08-21 | vs ATL | 123 | L 9-11 | 54-69 | 5 | 31,669 | Dick Ruthven | Pascual Perez | Rick Camp | Dick Ruthven | Steve Bedrosian | 518 | 520 | -2 |
| 1983-08-22 | vs CIN | 124 | W 2-0 | 55-69 | 5 | 11,749 | Dickie Noles | Frank Pastore | Dickie Noles | Frank Pastore | Lee Smith | 520 | 520 | 0 |
| 1983-08-23 | vs CIN | 125 | L 2-4 | 55-70 | 5 | 15,607 | Fergie Jenkins | Jeff Russell | Jeff Russell | Fergie Jenkins | Ben Hayes | 522 | 524 | -2 |
| 1983-08-24 | vs CIN | 126 | W 3-0 | 56-70 | 5 | 17,955 | Chuck Rainey | Mario Soto | Chuck Rainey | Mario Soto | | 525 | 524 | 1 |
| 1983-08-26 | @ HOU | 127 | L 0-1 | 56-71 | 5 | 16,735 | Steve Trout | Nolan Ryan | Vern Ruhle | Steve Trout | Bill Dawley | 525 | 525 | 0 |
| 1983-08-27 | @ HOU | 128 | W 9-5 | 57-71 | 5 | 31,665 | Dick Ruthven | Joe Niekro | Dick Ruthven | Joe Niekro | Bill Campbell | 534 | 530 | 4 |
| 1983-08-28 | @ HOU | 129 | L 2-4 | 57-72 | 5 | 12,776 | Dickie Noles | Mike Scott | Mike Scott | Dickie Noles | Frank DiPino | 536 | 534 | 2 |
| 1983-08-29 | @ ATL | 130 | W 7-5 | 58-72 | 5 | 15,470 | Fergie Jenkins | Phil Niekro | Bill Campbell | Gene Garber | Lee Smith | 543 | 539 | 4 |
| 1983-08-30 | @ ATL | 131 | W 9-6 | 59-72 | 5 | 13,983 | Chuck Rainey | Craig McMurtry | Chuck Rainey | Craig McMurtry | Lee Smith | 552 | 545 | 7 |
| 1983-08-31 | @ CIN | 132 | L 4-6 | 59-73 | 5 | 17,474 | Steve Trout | Charlie Puleo | Rich Gale | Rich Bordi | Ben Hayes | 556 | 551 | 5 |
| 1983-09-01 | @ CIN | 133 | W 3-1 | 60-73 | 5 | 10,127 | Dick Ruthven | Bruce Berenyi | Dick Ruthven | Bruce Berenyi | Lee Smith | 559 | 552 | 7 |
| 1983-09-02 | vs HOU | 134 | L 5-6 | 60-74 | 5 | 11,575 | Dickie Noles | Mike Scott | Bill Dawley | Bill Campbell | Frank DiPino | 564 | 558 | 6 |
| 1983-09-03 | vs HOU | 135 | W 9-3 | 61-74 | 5 | 20,107 | Fergie Jenkins | Mike Madden | Fergie Jenkins | Mike Madden | Rich Bordi | 573 | 561 | 12 |
| 1983-09-04 | vs HOU | 136 | W 9-7 | 62-74 | 5 | 17,750 | Chuck Rainey | Vern Ruhle | Warren Brusstar | Bill Dawley | Lee Smith | 582 | 568 | 14 |
| 1983-09-05 | @ MON | 137 | L 3-7 | 62-75 | 5 | 40,809 | Steve Trout | Bill Gullickson | Bill Gullickson | Steve Trout | Bob James | 585 | 575 | 10 |
| 1983-09-06 | @ MON | 138 | L 2-8 | 62-76 | 5 | 35,312 | Dick Ruthven | Charlie Lea | Charlie Lea | Dick Ruthven | Scott Sanderson | 587 | 583 | 4 |
| 1983-09-07 | @ MON | 139 | L 1-6 | 62-77 | 5 | 20,475 | Dickie Noles | Steve Rogers | Steve Rogers | Dickie Noles | | 588 | 589 | -1 |
| 1983-09-09 | vs SLN | 140 | L 5-6 | 62-78 | 5 | 10,195 | Fergie Jenkins | Joaquin Andujar | Bruce Sutter | Lee Smith | | 593 | 595 | -2 |
| 1983-09-10 | vs SLN | 141 | W 8-5 | 63-78 | 5 | 26,388 | Chuck Rainey | Bob Forsch | Bill Campbell | Jeff Lahti | Lee Smith | 601 | 600 | 1 |
| 1983-09-11 | vs SLN | 142 | L 1-2 | 63-79 | 5 | 34,634 | Rick Reuschel | John Stuper | John Stuper | Lee Smith | Bruce Sutter | 602 | 602 | 0 |
| 1983-09-12 | vs MON | 143 | W 8-0 | 64-79 | 5 | 4,180 | Dick Ruthven | Steve Rogers | Dick Ruthven | Steve Rogers | | 610 | 602 | 8 |
| 1983-09-13 | vs MON | 144 | L 2-5 | 64-80 | 5 | 5,572 | Dickie Noles | Scott Sanderson | Bob James | Dickie Noles | | 612 | 607 | 5 |
| 1983-09-14 | @ PIT | 145 | L 3-6 | 64-81 | 5 | 16,329 | Steve Trout | John Candelaria | John Candelaria | Steve Trout | | 615 | 613 | 2 |
| 1983-09-15 | @ PIT | 146 | L 4-8 | 64-82 | 5 | 7,943 | Chuck Rainey | Larry McWilliams | Larry McWilliams | Chuck Rainey | | 619 | 621 | -2 |
| 1983-09-16 | @ NYN | 147 | W 7-4 | 65-82 | 5 | 6,523 | Rick Reuschel | Mike Torrez | Rick Reuschel | Mike Torrez | | 626 | 625 | 1 |
| 1983-09-17 | @ NYN | 148 | W 7-6 | 66-82 | 5 | 7,262 | Don Schulze | Ron Darling | Bill Johnson | Jesse Orosco | Lee Smith | 633 | 631 | 2 |
| 1983-09-18 | @ NYN | 149 | W 6-5 | 67-82 | 5 | 9,126 | Dick Ruthven | Walt Terrell | Bill Campbell | Doug Sisk | Lee Smith | 639 | 636 | 3 |
| 1983-09-19 | @ PHI | 150 | L 6-7 | 67-83 | 5 | 21,289 | Dickie Noles | Marty Bystrom | Ron Reed | Lee Smith | Al Holland | 645 | 643 | 2 |
| 1983-09-20 | @ PHI | 151 | L 5-8 | 67-84 | 5 | 20,312 | Steve Trout | Kevin Gross | Guillermo Hernandez | Reggie Patterson | Ron Reed | 650 | 651 | -1 |
| 1983-09-21 | vs PIT | 152 | W 7-6 | 68-84 | 5 | 3,029 | Chuck Rainey | Jose DeLeon | Fergie Jenkins | Cecilio Guante | Lee Smith | 657 | 657 | 0 |
| 1983-09-22 | vs PIT | 153 | L 2-8 | 68-85 | 5 | 3,426 | Rick Reuschel | Lee Tunnell | Lee Tunnell | Rick Reuschel | | 659 | 665 | -6 |
| 1983-09-23 | vs NYN | 154 | W 4-1 | 69-85 | 5 | 3,105 | Dick Ruthven | Walt Terrell | Dick Ruthven | Walt Terrell | | 663 | 666 | -3 |
| 1983-09-24 | vs NYN | 155 | L 6-7 | 69-86 | 5 | 30,111 | Don Schulze | Tom Seaver | Tom Seaver | Don Schulze | Doug Sisk | 669 | 673 | -4 |
| 1983-09-25 | vs NYN | 156 | W 11-7 | 70-86 | 5 | 6,421 | Reggie Patterson | Tim Leary | Reggie Patterson | Tim Leary | | 680 | 680 | 0 |
| 1983-09-26 | vs PHI | 157 | L 2-5 | 70-87 | 5 | 3,137 | Chuck Rainey | John Denny | John Denny | Chuck Rainey | Ron Reed | 682 | 685 | -3 |
| 1983-09-27 | vs PHI | 158 | W 3-0 | 71-87 | 5 | 6,593 | Rick Reuschel | Steve Carlton | Steve Trout | Steve Carlton | Lee Smith | 685 | 685 | 0 |
| 1983-09-28 | vs PHI | 159 | L 6-13 | 71-88 | 5 | 7,680 | Dick Ruthven | Charles Hudson | Guillermo Hernandez | Dick Ruthven | | 691 | 698 | -7 |
| 1983-09-30 | @ SLN | 160 | L 2-9 | 71-89 | 5 | 19,924 | Reggie Patterson | Neil Allen | Neil Allen | Reggie Patterson | | 693 | 707 | -14 |
| 1983-10-01 | @ SLN | 161 | L 2-3 | 71-90 | 5 | 23,543 | Don Schulze | Bob Forsch | Bob Forsch | Craig Lefferts | Bruce Sutter | 695 | 710 | -15 |
| 1983-10-02 | @ SLN | 162 | L 6-9 | 71-91 | 5 | 38,763 | Chuck Rainey | John Stuper | John Stuper | Chuck Rainey | Dave Von Ohlen | 701 | 719 | -18 |