| 1983-04-05 | @ SFN | 1 | W 16-13 | 1-0 | 3 | 50,542 | Tim Lollar | Mike Krukow | Tim Lollar | Mike Krukow | Gary Lucas | 16 | 13 | 3 |
| 1983-04-06 | @ SFN | 2 | W 5-3 | 2-0 | 2 | 8,929 | Dave Dravecky | Bill Laskey | Dave Dravecky | Bill Laskey | | 21 | 16 | 5 |
| 1983-04-08 | @ ATL | 3 | L 2-4 | 2-1 | 4 | 32,737 | Eric Show | Rick Camp | Steve Bedrosian | Floyd Chiffer | Gene Garber | 23 | 20 | 3 |
| 1983-04-09 | @ ATL | 4 | L 5-6 | 2-2 | 4 | 12,665 | John Montefusco | Phil Niekro | Pete Falcone | Chris Welsh | | 28 | 26 | 2 |
| 1983-04-10 | @ ATL | 5 | L 3-4 | 2-3 | 4 | 21,144 | Ed Whitson | Craig McMurtry | Craig McMurtry | Ed Whitson | Steve Bedrosian | 31 | 30 | 1 |
| 1983-04-11 | @ ATL | 6 | L 0-4 | 2-4 | 4 | 6,915 | Tim Lollar | Pascual Perez | Pascual Perez | Tim Lollar | | 31 | 34 | -3 |
| 1983-04-12 | vs SFN | 7 | L 5-6 | 2-5 | 5 | 45,397 | Dave Dravecky | Fred Breining | Fred Breining | Dave Dravecky | Greg Minton | 36 | 40 | -4 |
| 1983-04-13 | vs SFN | 8 | W 2-1 | 3-5 | 4 | 15,494 | Eric Show | Atlee Hammaker | Eric Show | Atlee Hammaker | Gary Lucas | 38 | 41 | -3 |
| 1983-04-14 | vs SFN | 9 | W 6-4 | 4-5 | 4 | 20,407 | John Montefusco | Andy McGaffigan | John Montefusco | Andy McGaffigan | Gary Lucas | 44 | 45 | -1 |
| 1983-04-15 | @ LAN | 10 | L 2-6 | 4-6 | 4 | 52,392 | Ed Whitson | Fernando Valenzuela | Fernando Valenzuela | Ed Whitson | Joe Beckwith | 46 | 51 | -5 |
| 1983-04-16 | @ LAN | 11 | L 5-8 | 4-7 | 4 | 50,800 | Tim Lollar | Jerry Reuss | Jerry Reuss | Floyd Chiffer | Dave Stewart | 51 | 59 | -8 |
| 1983-04-17 | @ LAN | 12 | W 9-1 | 5-7 | 4 | 50,363 | Dave Dravecky | Bob Welch | Dave Dravecky | Bob Welch | | 60 | 60 | 0 |
| 1983-04-18 | vs ATL | 13 | W 10-3 | 6-7 | 4 | 18,730 | Eric Show | Craig McMurtry | Eric Show | Craig McMurtry | Luis DeLeon | 70 | 63 | 7 |
| 1983-04-19 | vs ATL | 14 | L 2-9 | 6-8 | 4 | 21,327 | John Montefusco | Rick Camp | Rick Camp | John Montefusco | | 72 | 72 | 0 |
| 1983-04-22 | @ SLN | 15 | W 4-1 | 7-8 | 4 | 16,410 | Dave Dravecky | Bob Forsch | Dave Dravecky | Bob Forsch | | 76 | 73 | 3 |
| 1983-04-23 | @ SLN | 16 | L 5-9 | 7-9 | 4 | 40,938 | Eric Show | John Stuper | John Martin | Eric Show | | 81 | 82 | -1 |
| 1983-04-24 | @ SLN | 17 | L 0-2 | 7-10 | 4 | 27,059 | Andy Hawkins | Dave LaPoint | Dave LaPoint | Andy Hawkins | Bruce Sutter | 81 | 84 | -3 |
| 1983-04-26 | @ CHN | 18 | W 10-8 | 8-10 | 4 | 9,835 | John Montefusco | Chuck Rainey | John Montefusco | Craig Lefferts | Luis DeLeon | 91 | 92 | -1 |
| 1983-04-27 | @ CHN | 19 | L 4-5 | 8-11 | 4 | 6,332 | Dave Dravecky | Fergie Jenkins | Bill Campbell | Gary Lucas | | 95 | 97 | -2 |
| 1983-04-28 | @ CHN | 20 | W 3-1 | 9-11 | 4 | 3,383 | Eric Show | Steve Trout | Eric Show | Steve Trout | Luis DeLeon | 98 | 98 | 0 |
| 1983-04-30 | @ PIT | 21 | W 8-4 | 10-12 | 4 | 0 | Andy Hawkins | John Candelaria | Andy Hawkins | John Candelaria | | 106 | 102 | 4 |
| 1983-04-30 | @ PIT | 22 | L 1-2 | 10-12 | 4 | 19,593 | Chris Welsh | Larry McWilliams | Larry McWilliams | Luis DeLeon | Rod Scurry | 107 | 104 | 3 |
| 1983-05-03 | vs SLN | 23 | W 4-3 | 11-12 | 4 | 16,842 | Dave Dravecky | Bob Forsch | Dave Dravecky | Bob Forsch | Gary Lucas | 111 | 107 | 4 |
| 1983-05-04 | vs SLN | 24 | W 10-0 | 12-12 | 4 | 17,119 | Eric Show | Joaquin Andujar | Eric Show | Joaquin Andujar | | 121 | 107 | 14 |
| 1983-05-05 | vs SLN | 25 | L 3-4 | 12-13 | 4 | 21,943 | Andy Hawkins | Dave LaPoint | Bruce Sutter | Gary Lucas | | 124 | 111 | 13 |
| 1983-05-06 | vs CHN | 26 | L 2-3 | 12-14 | 4 | 18,373 | Tim Lollar | Chuck Rainey | Chuck Rainey | Tim Lollar | Lee Smith | 126 | 114 | 12 |
| 1983-05-07 | vs CHN | 27 | L 4-6 | 12-15 | 4 | 47,208 | John Montefusco | Guillermo Hernandez | Bill Campbell | Gary Lucas | | 130 | 120 | 10 |
| 1983-05-08 | vs CHN | 28 | W 5-3 | 13-15 | 4 | 41,522 | Dave Dravecky | Steve Trout | Dave Dravecky | Warren Brusstar | | 135 | 123 | 12 |
| 1983-05-09 | vs PIT | 29 | L 3-5 | 13-16 | 5 | 17,885 | Eric Show | Larry McWilliams | Manny Sarmiento | Mike Couchee | | 138 | 128 | 10 |
| 1983-05-10 | vs PIT | 30 | W 4-1 | 14-16 | 4 | 9,965 | Andy Hawkins | Lee Tunnell | Andy Hawkins | Rod Scurry | | 142 | 129 | 13 |
| 1983-05-12 | vs LAN | 31 | L 3-4 | 14-17 | 5 | 36,469 | Tim Lollar | Fernando Valenzuela | Fernando Valenzuela | Luis DeLeon | Dave Stewart | 145 | 133 | 12 |
| 1983-05-13 | vs LAN | 32 | W 6-4 | 15-17 | 4 | 32,581 | Dave Dravecky | Burt Hooton | Dave Dravecky | Burt Hooton | Luis DeLeon | 151 | 137 | 14 |
| 1983-05-14 | vs LAN | 33 | L 1-4 | 15-18 | 4 | 34,547 | Eric Show | Jerry Reuss | Jerry Reuss | Eric Show | | 152 | 141 | 11 |
| 1983-05-15 | vs LAN | 34 | L 2-3 | 15-19 | 4 | 30,974 | Andy Hawkins | Bob Welch | Bob Welch | Andy Hawkins | Steve Howe | 154 | 144 | 10 |
| 1983-05-17 | @ NYN | 35 | L 4-6 | 15-20 | 5 | 7,550 | Tim Lollar | Tom Seaver | Tom Seaver | Tim Lollar | Doug Sisk | 158 | 150 | 8 |
| 1983-05-18 | @ NYN | 36 | L 1-2 | 15-21 | 5 | 7,580 | Dave Dravecky | Mike Torrez | Mike Torrez | Dave Dravecky | Doug Sisk | 159 | 152 | 7 |
| 1983-05-19 | @ NYN | 37 | W 3-2 | 16-21 | 5 | 7,034 | Eric Show | Scott Holman | Eric Show | Scott Holman | Luis DeLeon | 162 | 154 | 8 |
| 1983-05-20 | @ PHI | 38 | W 5-0 | 17-21 | 5 | 26,607 | Andy Hawkins | Steve Carlton | Andy Hawkins | Steve Carlton | | 167 | 154 | 13 |
| 1983-05-23 | @ MON | 39 | L 1-3 | 17-22 | 5 | 19,314 | Dave Dravecky | Bill Gullickson | Bill Gullickson | Dave Dravecky | Jeff Reardon | 168 | 157 | 11 |
| 1983-05-24 | @ MON | 40 | L 4-5 | 17-23 | 5 | 17,343 | Tim Lollar | Chris Welsh | Jeff Reardon | Luis DeLeon | | 172 | 162 | 10 |
| 1983-05-25 | @ MON | 41 | L 0-2 | 17-24 | 6 | 14,297 | Andy Hawkins | Steve Rogers | Steve Rogers | Andy Hawkins | | 172 | 164 | 8 |
| 1983-05-27 | vs NYN | 42 | W 4-0 | 18-24 | 5 | 14,233 | Eric Show | Tom Seaver | Eric Show | Tom Seaver | | 176 | 164 | 12 |
| 1983-05-28 | vs NYN | 43 | W 5-4 | 19-24 | 5 | 26,595 | Dave Dravecky | Mike Torrez | Dave Dravecky | Mike Torrez | Gary Lucas | 181 | 168 | 13 |
| 1983-05-29 | vs NYN | 44 | L 2-3 | 19-25 | 5 | 15,385 | Tim Lollar | Ed Lynch | Ed Lynch | Tim Lollar | Jesse Orosco | 183 | 171 | 12 |
| 1983-05-30 | vs MON | 45 | W 5-4 | 20-25 | 4 | 18,929 | Andy Hawkins | Steve Rogers | Gary Lucas | Steve Rogers | | 188 | 175 | 13 |
| 1983-05-31 | vs MON | 46 | W 5-3 | 21-25 | 4 | 9,240 | Ed Whitson | Chris Welsh | John Montefusco | Jeff Reardon | | 193 | 178 | 15 |
| 1983-06-01 | vs MON | 47 | L 6-8 | 21-26 | 4 | 11,180 | Eric Show | Scott Sanderson | Bryn Smith | Elias Sosa | | 199 | 186 | 13 |
| 1983-06-02 | vs PHI | 48 | W 4-1 | 22-26 | 4 | 14,474 | Dave Dravecky | John Denny | Dave Dravecky | Ed Farmer | | 203 | 187 | 16 |
| 1983-06-03 | vs PHI | 49 | W 8-5 | 23-26 | 4 | 18,211 | Tim Lollar | Larry Christenson | Gary Lucas | Ed Farmer | | 211 | 192 | 19 |
| 1983-06-04 | vs PHI | 50 | W 5-4 | 24-26 | 4 | 33,982 | Andy Hawkins | Marty Bystrom | John Montefusco | Marty Bystrom | Sid Monge | 216 | 196 | 20 |
| 1983-06-05 | vs PHI | 51 | L 1-2 | 24-27 | 4 | 21,876 | Ed Whitson | Charles Hudson | Al Holland | Ed Whitson | | 217 | 198 | 19 |
| 1983-06-07 | @ CIN | 52 | W 7-3 | 25-27 | 4 | 10,639 | Eric Show | Mario Soto | Eric Show | Mario Soto | | 224 | 201 | 23 |
| 1983-06-08 | @ CIN | 53 | W 5-3 | 26-27 | 4 | 9,640 | Dave Dravecky | Joe Price | Dave Dravecky | Joe Price | Sid Monge | 229 | 204 | 25 |
| 1983-06-09 | @ CIN | 54 | L 1-8 | 26-28 | 4 | 9,552 | Andy Hawkins | Bruce Berenyi | Bruce Berenyi | Andy Hawkins | | 230 | 212 | 18 |
| 1983-06-10 | @ HOU | 55 | L 1-2 | 26-29 | 5 | 13,385 | Ed Whitson | Mike LaCoss | Mike LaCoss | Ed Whitson | Bill Dawley | 231 | 214 | 17 |
| 1983-06-11 | @ HOU | 56 | W 8-4 | 27-29 | 4 | 25,173 | Tim Lollar | Mike Scott | John Montefusco | Vern Ruhle | | 239 | 218 | 21 |
| 1983-06-12 | @ HOU | 57 | L 0-2 | 27-30 | 5 | 14,950 | Eric Show | Nolan Ryan | Nolan Ryan | Eric Show | | 239 | 220 | 19 |
| 1983-06-13 | @ HOU | 58 | L 0-2 | 27-31 | 5 | 11,897 | Dave Dravecky | Joe Niekro | Joe Niekro | Dave Dravecky | Frank DiPino | 239 | 222 | 17 |
| 1983-06-14 | vs CIN | 59 | L 3-4 | 27-32 | 5 | 13,416 | Andy Hawkins | Bruce Berenyi | Keefe Cato | Gary Lucas | Bill Scherrer | 242 | 226 | 16 |
| 1983-06-15 | vs CIN | 60 | W 5-1 | 28-32 | 5 | 12,682 | Ed Whitson | Charlie Puleo | Ed Whitson | Charlie Puleo | | 247 | 227 | 20 |
| 1983-06-16 | vs CIN | 61 | W 3-1 | 29-32 | 5 | 14,228 | Tim Lollar | Frank Pastore | Tim Lollar | Frank Pastore | John Montefusco | 250 | 228 | 22 |
| 1983-06-17 | vs HOU | 62 | L 1-4 | 29-33 | 5 | 20,768 | Eric Show | Nolan Ryan | Nolan Ryan | Eric Show | Bill Dawley | 251 | 232 | 19 |
| 1983-06-18 | vs HOU | 63 | W 2-1 | 30-33 | 5 | 26,640 | Dave Dravecky | Joe Niekro | Dave Dravecky | Frank LaCorte | | 253 | 233 | 20 |
| 1983-06-19 | vs HOU | 64 | W 6-4 | 31-33 | 5 | 16,464 | Andy Hawkins | Bob Knepper | Elias Sosa | Bob Knepper | Sid Monge | 259 | 237 | 22 |
| 1983-06-20 | @ LAN | 65 | W 4-1 | 32-33 | 4 | 43,980 | Ed Whitson | Jerry Reuss | Ed Whitson | Jerry Reuss | John Montefusco | 263 | 238 | 25 |
| 1983-06-21 | @ LAN | 66 | W 2-0 | 33-33 | 4 | 47,619 | Tim Lollar | Alejandro Pena | Tim Lollar | Alejandro Pena | Luis DeLeon | 265 | 238 | 27 |
| 1983-06-22 | @ LAN | 67 | W 5-2 | 34-33 | 3 | 46,340 | Eric Show | Bob Welch | Eric Show | Bob Welch | Gary Lucas | 270 | 240 | 30 |
| 1983-06-23 | @ LAN | 68 | W 7-5 | 35-33 | 3 | 44,703 | Dave Dravecky | Fernando Valenzuela | Dave Dravecky | Fernando Valenzuela | Gary Lucas | 277 | 245 | 32 |
| 1983-06-24 | @ SFN | 69 | L 0-5 | 35-34 | 3 | 13,966 | Andy Hawkins | Mike Krukow | Mike Krukow | Andy Hawkins | | 277 | 250 | 27 |
| 1983-06-25 | @ SFN | 70 | W 3-2 | 36-34 | 3 | 17,082 | Ed Whitson | Fred Breining | John Montefusco | Gary Lavelle | Gary Lucas | 280 | 252 | 28 |
| 1983-06-26 | @ SFN | 71 | L 0-2 | 36-36 | 4 | 0 | Tim Lollar | Atlee Hammaker | Atlee Hammaker | Tim Lollar | | 280 | 254 | 26 |
| 1983-06-26 | @ SFN | 72 | L 3-4 | 36-36 | 4 | 28,607 | Eric Show | Bill Laskey | Bill Laskey | Eric Show | Gary Lavelle | 283 | 258 | 25 |
| 1983-06-28 | vs LAN | 73 | L 5-9 | 36-37 | 5 | 35,213 | Dave Dravecky | Bob Welch | Bob Welch | Dave Dravecky | | 288 | 267 | 21 |
| 1983-06-29 | vs LAN | 74 | W 13-2 | 37-37 | 3 | 36,545 | Mark Thurmond | Fernando Valenzuela | Mark Thurmond | Fernando Valenzuela | | 301 | 269 | 32 |
| 1983-06-30 | vs LAN | 75 | W 7-6 | 38-37 | 3 | 41,914 | Ed Whitson | Burt Hooton | John Montefusco | Steve Howe | | 308 | 275 | 33 |
| 1983-07-01 | vs SFN | 76 | L 3-4 | 38-38 | 3 | 15,090 | Tim Lollar | Bill Laskey | Bill Laskey | Tim Lollar | Jim Barr | 311 | 279 | 32 |
| 1983-07-02 | vs SFN | 77 | W 5-4 | 39-38 | 3 | 18,177 | Eric Show | Atlee Hammaker | Gary Lucas | Atlee Hammaker | | 316 | 283 | 33 |
| 1983-07-03 | vs SFN | 78 | W 4-1 | 40-38 | 3 | 20,391 | Dave Dravecky | Mark Davis | Dave Dravecky | Mark Davis | | 320 | 284 | 36 |
| 1983-07-04 | vs SFN | 79 | W 4-3 | 41-38 | 3 | 44,519 | Mark Thurmond | Mike Krukow | Mark Thurmond | Mike Krukow | Gary Lucas | 324 | 287 | 37 |
| 1983-07-08 | vs SLN | 80 | W 3-2 | 42-38 | 3 | 23,166 | Tim Lollar | Neil Allen | Gary Lucas | Bruce Sutter | | 327 | 289 | 38 |
| 1983-07-09 | vs SLN | 81 | L 4-12 | 42-39 | 3 | 25,125 | Dave Dravecky | Dave LaPoint | Dave LaPoint | Dave Dravecky | | 331 | 301 | 30 |
| 1983-07-10 | vs SLN | 82 | L 2-4 | 42-40 | 3 | 15,301 | Mark Thurmond | Joaquin Andujar | Dave Von Ohlen | Gary Lucas | Bruce Sutter | 333 | 305 | 28 |
| 1983-07-11 | vs CHN | 83 | W 6-5 | 43-40 | 3 | 22,418 | Ed Whitson | Fergie Jenkins | John Montefusco | Fergie Jenkins | Sid Monge | 339 | 310 | 29 |
| 1983-07-12 | vs CHN | 84 | W 5-3 | 44-40 | 3 | 13,850 | Eric Show | Dickie Noles | Eric Show | Dickie Noles | | 344 | 313 | 31 |
| 1983-07-13 | vs CHN | 85 | W 5-4 | 45-40 | 3 | 15,503 | Tim Lollar | Chuck Rainey | Tim Lollar | Chuck Rainey | Gary Lucas | 349 | 317 | 32 |
| 1983-07-14 | vs PIT | 86 | L 6-8 | 45-41 | 4 | 17,001 | Dave Dravecky | Larry McWilliams | Cecilio Guante | John Montefusco | Jim Bibby | 355 | 325 | 30 |
| 1983-07-15 | vs PIT | 87 | L 2-4 | 45-42 | 4 | 15,601 | Mark Thurmond | Rick Rhoden | Kent Tekulve | Mark Thurmond | | 357 | 329 | 28 |
| 1983-07-16 | vs PIT | 88 | L 2-3 | 45-43 | 4 | 26,414 | Ed Whitson | Don Robinson | Don Robinson | Ed Whitson | Kent Tekulve | 359 | 332 | 27 |
| 1983-07-17 | vs PIT | 89 | L 3-4 | 45-44 | 4 | 17,897 | Eric Show | Lee Tunnell | Lee Tunnell | Eric Show | Kent Tekulve | 362 | 336 | 26 |
| 1983-07-19 | @ SLN | 90 | L 0-4 | 45-45 | 4 | 31,395 | Tim Lollar | Neil Allen | Neil Allen | Tim Lollar | | 362 | 340 | 22 |
| 1983-07-20 | @ SLN | 91 | W 5-4 | 46-45 | 4 | 23,671 | Dave Dravecky | Dave LaPoint | Luis DeLeon | Bruce Sutter | Sid Monge | 367 | 344 | 23 |
| 1983-07-21 | @ SLN | 92 | W 4-2 | 47-45 | 4 | 22,289 | Mark Thurmond | Joaquin Andujar | Mark Thurmond | Joaquin Andujar | Luis DeLeon | 371 | 346 | 25 |
| 1983-07-22 | @ CHN | 93 | L 3-7 | 47-46 | 4 | 26,281 | Ed Whitson | Fergie Jenkins | Craig Lefferts | Gary Lucas | | 374 | 353 | 21 |
| 1983-07-23 | @ CHN | 94 | W 4-2 | 48-46 | 4 | 32,224 | Eric Show | Dickie Noles | Eric Show | Dickie Noles | John Montefusco | 378 | 355 | 23 |
| 1983-07-24 | @ CHN | 95 | L 2-5 | 48-47 | 4 | 34,127 | Tim Lollar | Chuck Rainey | Chuck Rainey | Tim Lollar | Lee Smith | 380 | 360 | 20 |
| 1983-07-25 | @ PIT | 96 | L 3-6 | 48-48 | 4 | 12,161 | Dave Dravecky | Rick Rhoden | Rick Rhoden | Dave Dravecky | Cecilio Guante | 383 | 366 | 17 |
| 1983-07-26 | @ PIT | 97 | W 6-1 | 49-49 | 4 | 0 | Mark Thurmond | Don Robinson | Mark Thurmond | Don Robinson | Luis DeLeon | 389 | 367 | 22 |
| 1983-07-26 | @ PIT | 98 | L 5-10 | 49-49 | 4 | 20,660 | Ed Whitson | Lee Tunnell | Lee Tunnell | Ed Whitson | | 394 | 377 | 17 |
| 1983-07-27 | @ PIT | 99 | L 1-10 | 49-50 | 4 | 18,793 | Eric Show | Jose DeLeon | Jose DeLeon | Eric Show | | 395 | 387 | 8 |
| 1983-07-29 | vs ATL | 100 | L 1-2 | 50-51 | 4 | 0 | Tim Lollar | Pascual Perez | Pascual Perez | Tim Lollar | Gene Garber | 396 | 389 | 7 |
| 1983-07-29 | vs ATL | 101 | W 6-5 | 50-51 | 4 | 33,132 | John Montefusco | Ken Dayley | Sid Monge | Donnie Moore | | 402 | 394 | 8 |
| 1983-07-30 | vs ATL | 102 | L 2-5 | 50-52 | 4 | 24,111 | Dave Dravecky | Phil Niekro | Phil Niekro | Dave Dravecky | | 404 | 399 | 5 |
| 1983-07-31 | vs ATL | 103 | W 5-2 | 51-52 | 4 | 13,865 | Mark Thurmond | Craig McMurtry | Mark Thurmond | Craig McMurtry | John Montefusco | 409 | 401 | 8 |
| 1983-08-01 | vs HOU | 104 | W 7-4 | 52-52 | 4 | 9,055 | Eric Show | Bob Knepper | Luis DeLeon | Bill Dawley | | 416 | 405 | 11 |
| 1983-08-02 | vs HOU | 105 | L 2-4 | 52-53 | 4 | 10,444 | Ed Whitson | Mike Madden | Vern Ruhle | Sid Monge | | 418 | 409 | 9 |
| 1983-08-03 | vs HOU | 106 | L 0-1 | 52-54 | 4 | 13,286 | Tim Lollar | Nolan Ryan | Nolan Ryan | Tim Lollar | | 418 | 410 | 8 |
| 1983-08-04 | vs HOU | 107 | W 4-2 | 53-54 | 4 | 10,516 | Dave Dravecky | Joe Niekro | Dave Dravecky | Joe Niekro | Gary Lucas | 422 | 412 | 10 |
| 1983-08-05 | vs CIN | 108 | L 3-4 | 53-55 | 4 | 11,319 | Mark Thurmond | Bruce Berenyi | Ted Power | Elias Sosa | Bill Scherrer | 425 | 416 | 9 |
| 1983-08-06 | vs CIN | 109 | W 11-4 | 55-55 | 4 | 0 | Eric Show | Charlie Puleo | Eric Show | Charlie Puleo | | 436 | 420 | 16 |
| 1983-08-06 | vs CIN | 110 | W 6-2 | 55-55 | 4 | 13,237 | John Montefusco | Joe Price | John Montefusco | Ted Power | | 442 | 422 | 20 |
| 1983-08-07 | vs CIN | 111 | L 3-5 | 55-56 | 4 | 12,919 | Ed Whitson | Frank Pastore | Frank Pastore | Ed Whitson | | 445 | 427 | 18 |
| 1983-08-09 | @ HOU | 112 | W 3-2 | 56-56 | 4 | 17,390 | Tim Lollar | Joe Niekro | Tim Lollar | Joe Niekro | Sid Monge | 448 | 429 | 19 |
| 1983-08-10 | @ HOU | 113 | L 3-4 | 56-57 | 4 | 12,605 | Dave Dravecky | Bob Knepper | Vern Ruhle | Luis DeLeon | | 451 | 433 | 18 |
| 1983-08-11 | @ HOU | 114 | L 1-5 | 56-58 | 4 | 15,120 | Mark Thurmond | Mike Scott | Mike Scott | Mark Thurmond | Dave Smith | 452 | 438 | 14 |
| 1983-08-12 | @ CIN | 115 | L 5-6 | 56-59 | 4 | 13,611 | Eric Show | Frank Pastore | Frank Pastore | Eric Show | Tom Hume | 457 | 444 | 13 |
| 1983-08-13 | @ CIN | 116 | L 1-3 | 56-60 | 4 | 18,259 | John Montefusco | Jeff Russell | Jeff Russell | John Montefusco | | 458 | 447 | 11 |
| 1983-08-14 | @ CIN | 117 | W 10-9 | 57-60 | 4 | 14,867 | Tim Lollar | Mario Soto | Luis DeLeon | Tom Hume | Gary Lucas | 468 | 456 | 12 |
| 1983-08-15 | @ ATL | 118 | W 4-0 | 58-60 | 4 | 35,893 | Dave Dravecky | Craig McMurtry | Dave Dravecky | Craig McMurtry | | 472 | 456 | 16 |
| 1983-08-16 | @ ATL | 119 | W 3-2 | 59-60 | 4 | 21,936 | Mark Thurmond | Pascual Perez | Sid Monge | Steve Bedrosian | Ed Whitson | 475 | 458 | 17 |
| 1983-08-17 | vs PHI | 120 | W 5-4 | 60-60 | 4 | 14,657 | Eric Show | Charles Hudson | Eric Show | Charles Hudson | Gary Lucas | 480 | 462 | 18 |
| 1983-08-18 | vs PHI | 121 | L 2-4 | 60-61 | 4 | 9,755 | John Montefusco | John Denny | Al Holland | Gary Lucas | Ron Reed | 482 | 466 | 16 |
| 1983-08-19 | vs MON | 122 | W 6-5 | 61-61 | 4 | 12,947 | Tim Lollar | Ray Burris | Tim Lollar | Ray Burris | Sid Monge | 488 | 471 | 17 |
| 1983-08-21 | vs MON | 123 | L 0-3 | 62-62 | 4 | 0 | Dave Dravecky | Charlie Lea | Charlie Lea | Dave Dravecky | | 488 | 474 | 14 |
| 1983-08-21 | vs MON | 124 | W 5-2 | 62-62 | 4 | 15,890 | Mark Thurmond | Bill Gullickson | Mark Thurmond | Bill Gullickson | Luis DeLeon | 493 | 476 | 17 |
| 1983-08-22 | vs NYN | 125 | W 4-3 | 63-62 | 4 | 22,060 | Eric Show | Craig Swan | Eric Show | Craig Swan | Luis DeLeon | 497 | 479 | 18 |
| 1983-08-23 | vs NYN | 126 | L 3-8 | 63-63 | 4 | 8,578 | John Montefusco | Walt Terrell | Walt Terrell | John Montefusco | | 500 | 487 | 13 |
| 1983-08-24 | vs NYN | 127 | W 3-2 | 64-63 | 4 | 13,889 | Tim Lollar | Tom Seaver | Tim Lollar | Tom Seaver | Luis DeLeon | 503 | 489 | 14 |
| 1983-08-26 | @ MON | 128 | L 4-10 | 64-64 | 4 | 30,814 | Dave Dravecky | Bill Gullickson | Bill Gullickson | Dave Dravecky | | 507 | 499 | 8 |
| 1983-08-27 | @ MON | 129 | L 4-6 | 64-65 | 4 | 33,359 | Mark Thurmond | Charlie Lea | Charlie Lea | Luis DeLeon | Dan Schatzeder | 511 | 505 | 6 |
| 1983-08-28 | @ MON | 130 | L 0-8 | 64-66 | 4 | 43,168 | Eric Show | Steve Rogers | Steve Rogers | Eric Show | | 511 | 513 | -2 |
| 1983-08-29 | @ PHI | 131 | W 6-5 | 65-67 | 4 | 0 | Tim Lollar | Steve Carlton | Luis DeLeon | Steve Carlton | | 517 | 518 | -1 |
| 1983-08-29 | @ PHI | 132 | L 6-8 | 65-67 | 4 | 25,789 | Elias Sosa | Steve Comer | Steve Comer | Sid Monge | Al Holland | 523 | 526 | -3 |
| 1983-08-30 | @ PHI | 133 | L 0-6 | 66-68 | 4 | 0 | Andy Hawkins | Kevin Gross | Kevin Gross | Andy Hawkins | | 523 | 532 | -9 |
| 1983-08-30 | @ PHI | 134 | W 7-5 | 66-68 | 4 | 27,790 | Ed Whitson | Tug McGraw | Ed Whitson | Tug McGraw | Luis DeLeon | 530 | 537 | -7 |
| 1983-08-31 | @ PHI | 135 | L 3-4 | 66-69 | 4 | 21,547 | Mark Thurmond | Charles Hudson | Al Holland | Elias Sosa | | 533 | 541 | -8 |
| 1983-09-02 | @ NYN | 136 | L 3-7 | 66-70 | 4 | 9,624 | Eric Show | Walt Terrell | Walt Terrell | Eric Show | | 536 | 548 | -12 |
| 1983-09-03 | @ NYN | 137 | L 3-4 | 66-71 | 4 | 33,492 | Tim Lollar | Tom Seaver | Tom Gorman | Elias Sosa | | 539 | 552 | -13 |
| 1983-09-04 | @ NYN | 138 | W 7-5 | 67-71 | 4 | 9,191 | Andy Hawkins | Ed Lynch | Sid Monge | Ed Lynch | Elias Sosa | 546 | 557 | -11 |
| 1983-09-05 | @ LAN | 139 | W 5-2 | 68-71 | 4 | 49,849 | Mark Thurmond | Fernando Valenzuela | Mark Thurmond | Fernando Valenzuela | Gary Lucas | 551 | 559 | -8 |
| 1983-09-06 | @ LAN | 140 | W 8-3 | 69-71 | 4 | 41,264 | Ed Whitson | Rick Honeycutt | Ed Whitson | Rick Honeycutt | | 559 | 562 | -3 |
| 1983-09-07 | vs HOU | 141 | W 8-7 | 70-71 | 4 | 8,274 | Eric Show | Nolan Ryan | Sid Monge | Frank DiPino | | 567 | 569 | -2 |
| 1983-09-08 | vs HOU | 142 | L 2-3 | 70-72 | 4 | 7,858 | Tim Lollar | Mike Scott | Mike Madden | Luis DeLeon | Vern Ruhle | 569 | 572 | -3 |
| 1983-09-09 | vs CIN | 143 | W 8-2 | 71-72 | 4 | 14,745 | Andy Hawkins | Charlie Puleo | Andy Hawkins | Charlie Puleo | | 577 | 574 | 3 |
| 1983-09-11 | vs CIN | 144 | L 2-4 | 71-73 | 4 | 18,947 | Mark Thurmond | Jeff Russell | Jeff Russell | Mark Thurmond | Tom Hume | 579 | 578 | 1 |
| 1983-09-13 | vs SFN | 145 | W 4-3 | 72-73 | 4 | 7,612 | Ed Whitson | Scott Garrelts | Sid Monge | Greg Minton | | 583 | 581 | 2 |
| 1983-09-14 | vs SFN | 146 | W 7-4 | 73-73 | 4 | 19,763 | Eric Show | Mike Krukow | Eric Show | Mike Krukow | Gary Lucas | 590 | 585 | 5 |
| 1983-09-16 | @ ATL | 147 | L 0-6 | 73-74 | 4 | 29,062 | Tim Lollar | Craig McMurtry | Craig McMurtry | Tim Lollar | | 590 | 591 | -1 |
| 1983-09-17 | @ ATL | 148 | W 2-1 | 74-74 | 4 | 35,031 | Andy Hawkins | Len Barker | Luis DeLeon | Len Barker | Gary Lucas | 592 | 592 | 0 |
| 1983-09-18 | @ ATL | 149 | W 4-2 | 75-74 | 4 | 25,476 | Mark Thurmond | Pascual Perez | Gary Lucas | Ken Dayley | | 596 | 594 | 2 |
| 1983-09-19 | @ SFN | 150 | W 4-2 | 76-74 | 4 | 2,486 | Ed Whitson | Scott Garrelts | Ed Whitson | Scott Garrelts | Floyd Chiffer | 600 | 596 | 4 |
| 1983-09-20 | @ SFN | 151 | L 1-8 | 76-75 | 4 | 4,341 | Eric Show | Mark Calvert | Mark Calvert | Eric Show | Andy McGaffigan | 601 | 604 | -3 |
| 1983-09-21 | @ SFN | 152 | L 4-5 | 76-76 | 4 | 5,294 | Tim Lollar | Mark Davis | Gary Lavelle | Gary Lucas | | 605 | 609 | -4 |
| 1983-09-23 | @ CIN | 153 | W 11-8 | 77-76 | 4 | 6,635 | Mark Thurmond | Mario Soto | Luis DeLeon | Ben Hayes | | 616 | 617 | -1 |
| 1983-09-24 | @ CIN | 154 | L 2-3 | 77-77 | 4 | 9,615 | Ed Whitson | Bruce Berenyi | Bruce Berenyi | Sid Monge | | 618 | 620 | -2 |
| 1983-09-25 | @ CIN | 155 | L 2-5 | 77-78 | 4 | 21,483 | Andy Hawkins | Charlie Puleo | Charlie Puleo | Andy Hawkins | Bill Scherrer | 620 | 625 | -5 |
| 1983-09-26 | @ HOU | 156 | L 3-5 | 77-79 | 4 | 5,828 | Eric Show | Mike Madden | Mike Madden | Eric Show | Vern Ruhle | 623 | 630 | -7 |
| 1983-09-27 | @ HOU | 157 | L 5-8 | 77-80 | 4 | 6,239 | Tim Lollar | Jeff Heathcock | Bob Knepper | Tim Lollar | | 628 | 638 | -10 |
| 1983-09-28 | vs LAN | 158 | W 4-4 | 78-80 | 4 | 23,588 | Mark Thurmond | Jerry Reuss | | | | 632 | 642 | -10 |
| 1983-09-29 | vs LAN | 159 | W 7-1 | 80-80 | 4 | 0 | Ed Whitson | Bob Welch | Sid Monge | Joe Beckwith | | 639 | 643 | -4 |
| 1983-09-29 | vs LAN | 160 | W 4-1 | 80-80 | 4 | 20,230 | Andy Hawkins | Alejandro Pena | Andy Hawkins | Alejandro Pena | Luis DeLeon | 643 | 644 | -1 |
| 1983-09-30 | vs ATL | 161 | W 3-2 | 81-80 | 4 | 9,736 | Eric Show | Phil Niekro | Eric Show | Phil Niekro | Gary Lucas | 646 | 646 | 0 |
| 1983-10-01 | vs ATL | 162 | W 4-3 | 82-80 | 4 | 9,153 | Dennis Rasmussen | Steve Bedrosian | Sid Monge | Pete Falcone | | 650 | 649 | 1 |
| 1983-10-02 | vs ATL | 163 | L 3-4 | 82-81 | 4 | 15,959 | Greg Booker | Ken Dayley | Ken Dayley | Greg Booker | Tony Brizzolara | 653 | 653 | 0 |