| 1983-04-05 | @ SLN | 1 | W 7-1 | 1-0 | 2 | 43,509 | John Candelaria | Bob Forsch | John Candelaria | Bob Forsch | | 7 | 1 | 6 |
| 1983-04-07 | @ HOU | 2 | W 3-2 | 2-0 | 3 | 7,741 | Rick Rhoden | Bob Knepper | Rod Scurry | Bob Knepper | | 10 | 3 | 7 |
| 1983-04-08 | @ HOU | 3 | W 5-3 | 3-0 | 3 | 10,862 | Lee Tunnell | Vern Ruhle | Rod Scurry | Frank DiPino | Jim Bibby | 15 | 6 | 9 |
| 1983-04-09 | @ HOU | 4 | W 1-0 | 4-0 | 2 | 13,856 | Larry McWilliams | Joe Niekro | Larry McWilliams | Joe Niekro | | 16 | 6 | 10 |
| 1983-04-10 | @ HOU | 5 | W 10-8 | 5-0 | 1 | 7,668 | John Candelaria | Mike LaCoss | Jim Bibby | Julio Solano | Rod Scurry | 26 | 14 | 12 |
| 1983-04-12 | vs SLN | 6 | L 3-4 | 5-1 | 1 | 46,869 | Rick Rhoden | Dave LaPoint | Bruce Sutter | Jim Bibby | Eric Rasmussen | 29 | 18 | 11 |
| 1983-04-13 | vs SLN | 7 | L 1-9 | 5-2 | 2 | 4,126 | Lee Tunnell | Joaquin Andujar | Joaquin Andujar | Lee Tunnell | | 30 | 27 | 3 |
| 1983-04-16 | vs CHN | 8 | L 5-6 | 5-3 | 4 | 5,494 | Larry McWilliams | Fergie Jenkins | Guillermo Hernandez | Larry McWilliams | Lee Smith | 35 | 33 | 2 |
| 1983-04-17 | vs CHN | 9 | W 7-0 | 6-3 | 2 | 14,285 | John Candelaria | Steve Trout | John Candelaria | Steve Trout | Rick Rhoden | 42 | 33 | 9 |
| 1983-04-20 | @ NYN | 10 | L 0-6 | 6-5 | 4 | 0 | Larry McWilliams | Tom Seaver | Tom Seaver | Larry McWilliams | | 42 | 39 | 3 |
| 1983-04-20 | @ NYN | 11 | L 5-7 | 6-5 | 4 | 4,041 | Lee Tunnell | Mike Torrez | Carlos Diaz | Kent Tekulve | Neil Allen | 47 | 46 | 1 |
| 1983-04-22 | vs LAN | 12 | L 2-4 | 6-6 | 4 | 8,846 | Rick Rhoden | Jerry Reuss | Jerry Reuss | Rick Rhoden | Alejandro Pena | 49 | 50 | -1 |
| 1983-04-23 | vs LAN | 13 | L 2-3 | 6-7 | 4 | 8,187 | John Candelaria | Bob Welch | Bob Welch | John Candelaria | Steve Howe | 51 | 53 | -2 |
| 1983-04-26 | vs SFN | 14 | W 3-0 | 7-7 | 4 | 7,103 | Larry McWilliams | Fred Breining | Larry McWilliams | Fred Breining | | 54 | 53 | 1 |
| 1983-04-27 | vs SFN | 15 | L 2-3 | 7-8 | 4 | 5,267 | Rick Rhoden | Bill Laskey | Bill Laskey | Rick Rhoden | Greg Minton | 56 | 56 | 0 |
| 1983-04-30 | vs SDN | 16 | L 4-8 | 8-9 | 4 | 0 | John Candelaria | Andy Hawkins | Andy Hawkins | John Candelaria | | 60 | 64 | -4 |
| 1983-04-30 | vs SDN | 17 | W 2-1 | 8-9 | 4 | 19,593 | Larry McWilliams | Chris Welsh | Larry McWilliams | Luis DeLeon | Rod Scurry | 62 | 65 | -3 |
| 1983-05-02 | @ LAN | 18 | W 5-1 | 9-9 | 4 | 39,765 | Rick Rhoden | Jerry Reuss | Rick Rhoden | Jerry Reuss | | 67 | 66 | 1 |
| 1983-05-03 | @ LAN | 19 | L 4-5 | 9-10 | 4 | 34,624 | Jim Bibby | Alejandro Pena | Alejandro Pena | Jim Bibby | Steve Howe | 71 | 71 | 0 |
| 1983-05-04 | @ LAN | 20 | L 2-3 | 9-11 | 4 | 35,757 | Larry McWilliams | Bob Welch | Tom Niedenfuer | Manny Sarmiento | | 73 | 74 | -1 |
| 1983-05-06 | @ SFN | 21 | L 1-2 | 9-12 | 4 | 16,476 | John Candelaria | Andy McGaffigan | Andy McGaffigan | John Candelaria | Gary Lavelle | 74 | 76 | -2 |
| 1983-05-07 | @ SFN | 22 | L 1-5 | 9-13 | 4 | 10,874 | Rick Rhoden | Fred Breining | Fred Breining | Rick Rhoden | | 75 | 81 | -6 |
| 1983-05-08 | @ SFN | 23 | L 1-12 | 9-14 | 4 | 19,123 | Jim Bibby | Bill Laskey | Bill Laskey | Jim Bibby | | 76 | 93 | -17 |
| 1983-05-09 | @ SDN | 24 | W 5-3 | 10-14 | 4 | 17,885 | Larry McWilliams | Eric Show | Manny Sarmiento | Mike Couchee | | 81 | 96 | -15 |
| 1983-05-10 | @ SDN | 25 | L 1-4 | 10-15 | 4 | 9,965 | Lee Tunnell | Andy Hawkins | Andy Hawkins | Rod Scurry | | 82 | 100 | -18 |
| 1983-05-12 | vs NYN | 26 | W 6-2 | 11-15 | 4 | 7,944 | John Candelaria | Mike Torrez | John Candelaria | Mike Torrez | | 88 | 102 | -14 |
| 1983-05-13 | vs NYN | 27 | W 2-1 | 12-15 | 4 | 11,000 | Rick Rhoden | Scott Holman | Kent Tekulve | Carlos Diaz | | 90 | 103 | -13 |
| 1983-05-14 | vs NYN | 28 | L 2-6 | 12-16 | 4 | 8,931 | Larry McWilliams | Neil Allen | Neil Allen | Larry McWilliams | Jesse Orosco | 92 | 109 | -17 |
| 1983-05-16 | vs NYN | 29 | L 4-11 | 12-17 | 4 | 1,970 | Jim Bibby | Ed Lynch | Ed Lynch | Jim Bibby | Craig Swan | 96 | 120 | -24 |
| 1983-05-17 | vs CIN | 30 | L 1-2 | 12-18 | 4 | 5,207 | John Candelaria | Mario Soto | Mario Soto | John Candelaria | | 97 | 122 | -25 |
| 1983-05-18 | vs CIN | 31 | W 2-1 | 13-18 | 4 | 6,402 | Rick Rhoden | Bruce Berenyi | Rick Rhoden | Bruce Berenyi | | 99 | 123 | -24 |
| 1983-05-20 | vs HOU | 32 | W 4-3 | 14-18 | 4 | 13,643 | Larry McWilliams | Bob Knepper | Larry McWilliams | Bob Knepper | Kent Tekulve | 103 | 126 | -23 |
| 1983-05-21 | vs HOU | 33 | L 4-6 | 14-19 | 4 | 8,804 | Randy Niemann | Mike LaCoss | Mike LaCoss | Randy Niemann | Frank DiPino | 107 | 132 | -25 |
| 1983-05-23 | @ ATL | 34 | L 3-6 | 14-20 | 4 | 16,743 | Rick Rhoden | Pete Falcone | Pete Falcone | Rick Rhoden | Donnie Moore | 110 | 138 | -28 |
| 1983-05-24 | @ ATL | 35 | W 6-5 | 15-20 | 4 | 17,447 | Larry McWilliams | Rick Camp | Larry McWilliams | Rick Camp | | 116 | 143 | -27 |
| 1983-05-25 | @ ATL | 36 | L 0-6 | 15-21 | 4 | 15,034 | Jim Bibby | Craig McMurtry | Craig McMurtry | Jim Bibby | | 116 | 149 | -33 |
| 1983-05-26 | @ CIN | 37 | W 6-4 | 16-21 | 4 | 10,018 | Lee Tunnell | Charlie Puleo | Lee Tunnell | Charlie Puleo | Kent Tekulve | 122 | 153 | -31 |
| 1983-05-27 | @ CIN | 38 | L 0-9 | 16-22 | 4 | 13,224 | John Candelaria | Mario Soto | Mario Soto | John Candelaria | | 122 | 162 | -40 |
| 1983-05-28 | @ CIN | 39 | L 3-4 | 16-23 | 4 | 23,994 | Rick Rhoden | Joe Price | Ben Hayes | Rod Scurry | Bill Scherrer | 125 | 166 | -41 |
| 1983-05-29 | @ CIN | 40 | W 8-5 | 17-23 | 4 | 13,394 | Larry McWilliams | Frank Pastore | Larry McWilliams | Bill Scherrer | Manny Sarmiento | 133 | 171 | -38 |
| 1983-05-30 | vs ATL | 41 | W 8-6 | 18-23 | 4 | 12,211 | Jim Bibby | Craig McMurtry | Jim Bibby | Craig McMurtry | Kent Tekulve | 141 | 177 | -36 |
| 1983-05-31 | vs ATL | 42 | L 2-10 | 18-24 | 4 | 5,262 | Lee Tunnell | Phil Niekro | Phil Niekro | Lee Tunnell | Steve Bedrosian | 143 | 187 | -44 |
| 1983-06-01 | vs ATL | 43 | L 3-6 | 18-25 | 4 | 6,255 | John Candelaria | Pascual Perez | Pascual Perez | John Candelaria | Gene Garber | 146 | 193 | -47 |
| 1983-06-02 | @ CHN | 44 | L 2-3 | 18-26 | 4 | 6,589 | Rick Rhoden | Steve Trout | Steve Trout | Rick Rhoden | Lee Smith | 148 | 196 | -48 |
| 1983-06-03 | @ CHN | 45 | L 3-9 | 18-27 | 5 | 6,213 | Larry McWilliams | Dick Ruthven | Dick Ruthven | Rod Scurry | | 151 | 205 | -54 |
| 1983-06-04 | @ CHN | 46 | L 2-5 | 18-28 | 5 | 30,110 | Jim Bibby | Fergie Jenkins | Fergie Jenkins | Jim Bibby | Bill Campbell | 153 | 210 | -57 |
| 1983-06-05 | @ CHN | 47 | L 1-3 | 18-29 | 6 | 22,649 | Lee Tunnell | Craig Lefferts | Craig Lefferts | Lee Tunnell | Lee Smith | 154 | 213 | -59 |
| 1983-06-07 | @ MON | 48 | W 3-2 | 19-29 | 5 | 31,730 | John Candelaria | Charlie Lea | John Candelaria | Charlie Lea | Kent Tekulve | 157 | 215 | -58 |
| 1983-06-08 | @ MON | 49 | L 4-5 | 19-30 | 5 | 16,200 | Rick Rhoden | Bill Gullickson | Bill Gullickson | Rick Rhoden | Jeff Reardon | 161 | 220 | -59 |
| 1983-06-09 | @ MON | 50 | W 6-3 | 20-30 | 5 | 34,313 | Larry McWilliams | Steve Rogers | Larry McWilliams | Steve Rogers | | 167 | 223 | -56 |
| 1983-06-10 | @ PHI | 51 | W 4-3 | 21-30 | 5 | 31,092 | Jim Bibby | Charles Hudson | Kent Tekulve | Ed Farmer | | 171 | 226 | -55 |
| 1983-06-11 | @ PHI | 52 | L 7-9 | 21-31 | 5 | 34,820 | Lee Tunnell | Steve Carlton | Steve Carlton | Rod Scurry | Al Holland | 178 | 235 | -57 |
| 1983-06-12 | @ PHI | 53 | L 4-5 | 21-32 | 6 | 37,154 | John Candelaria | John Denny | Ron Reed | Rod Scurry | | 182 | 240 | -58 |
| 1983-06-13 | vs MON | 54 | W 4-3 | 22-32 | 5 | 8,229 | Rick Rhoden | Bill Gullickson | Rick Rhoden | Bill Gullickson | Kent Tekulve | 186 | 243 | -57 |
| 1983-06-14 | vs MON | 55 | L 3-7 | 22-33 | 6 | 9,588 | Larry McWilliams | Steve Rogers | Steve Rogers | Larry McWilliams | Jeff Reardon | 189 | 250 | -61 |
| 1983-06-15 | vs MON | 56 | L 4-7 | 22-34 | 6 | 11,809 | Jim Bibby | Ray Burris | Ray Burris | Jim Bibby | Jeff Reardon | 193 | 257 | -64 |
| 1983-06-17 | vs PHI | 57 | W 2-1 | 23-34 | 5 | 19,814 | John Candelaria | John Denny | John Candelaria | John Denny | Kent Tekulve | 195 | 258 | -63 |
| 1983-06-18 | vs PHI | 58 | L 4-6 | 23-35 | 6 | 26,662 | Rick Rhoden | Marty Bystrom | Marty Bystrom | Rick Rhoden | | 199 | 264 | -65 |
| 1983-06-19 | vs PHI | 59 | L 2-14 | 23-36 | 6 | 19,369 | Larry McWilliams | Charles Hudson | Charles Hudson | Larry McWilliams | | 201 | 278 | -77 |
| 1983-06-20 | vs CHN | 60 | W 5-4 | 25-36 | 5 | 0 | Lee Tunnell | Fergie Jenkins | Kent Tekulve | Bill Campbell | | 206 | 282 | -76 |
| 1983-06-20 | vs CHN | 61 | W 6-5 | 25-36 | 5 | 5,839 | Jim Bibby | Craig Lefferts | Don Robinson | Bill Campbell | | 212 | 287 | -75 |
| 1983-06-21 | vs CHN | 62 | W 8-4 | 26-36 | 5 | 6,363 | Rick Rhoden | Dickie Noles | Rick Rhoden | Dickie Noles | | 220 | 291 | -71 |
| 1983-06-22 | vs CHN | 63 | W 5-2 | 27-36 | 5 | 8,666 | John Candelaria | Chuck Rainey | John Candelaria | Chuck Rainey | Cecilio Guante | 225 | 293 | -68 |
| 1983-06-23 | vs CHN | 64 | W 5-2 | 28-36 | 5 | 8,296 | Larry McWilliams | Steve Trout | Larry McWilliams | Steve Trout | | 230 | 295 | -65 |
| 1983-06-24 | @ SLN | 65 | W 8-2 | 29-36 | 4 | 39,475 | Jim Bibby | Dave LaPoint | Jim Bibby | Dave LaPoint | Manny Sarmiento | 238 | 297 | -59 |
| 1983-06-25 | @ SLN | 66 | W 10-3 | 30-36 | 4 | 29,567 | Don Robinson | Kevin Hagen | Lee Tunnell | Kevin Hagen | | 248 | 300 | -52 |
| 1983-06-26 | @ SLN | 67 | W 5-0 | 31-36 | 4 | 32,306 | Rick Rhoden | Neil Allen | Rick Rhoden | Neil Allen | | 253 | 300 | -47 |
| 1983-06-27 | @ SLN | 68 | W 6-1 | 32-36 | 4 | 23,286 | John Candelaria | Joaquin Andujar | Cecilio Guante | Joaquin Andujar | | 259 | 301 | -42 |
| 1983-06-28 | @ CHN | 69 | L 7-8 | 32-37 | 4 | 11,832 | Larry McWilliams | Steve Trout | Craig Lefferts | Kent Tekulve | | 266 | 309 | -43 |
| 1983-06-29 | @ CHN | 70 | L 0-5 | 32-38 | 5 | 28,504 | Jim Bibby | Dick Ruthven | Dick Ruthven | Jim Bibby | | 266 | 314 | -48 |
| 1983-06-30 | @ CHN | 71 | L 3-4 | 32-39 | 5 | 17,261 | Rick Rhoden | Fergie Jenkins | Lee Smith | Manny Sarmiento | | 269 | 318 | -49 |
| 1983-07-01 | vs SLN | 72 | L 6-13 | 32-40 | 5 | 26,019 | Don Robinson | Joaquin Andujar | Joaquin Andujar | Don Robinson | | 275 | 331 | -56 |
| 1983-07-02 | vs SLN | 73 | W 3-1 | 33-40 | 5 | 27,446 | John Candelaria | Dave LaPoint | John Candelaria | Dave LaPoint | | 278 | 332 | -54 |
| 1983-07-03 | vs SLN | 74 | L 3-4 | 33-41 | 5 | 14,469 | Larry McWilliams | Bob Forsch | Bob Forsch | Manny Sarmiento | Bruce Sutter | 281 | 336 | -55 |
| 1983-07-04 | vs SLN | 75 | W 7-2 | 34-42 | 5 | 0 | Rick Rhoden | Kevin Hagen | Rick Rhoden | Kevin Hagen | | 288 | 338 | -50 |
| 1983-07-04 | vs SLN | 76 | L 4-11 | 34-42 | 5 | 22,185 | Jim Bibby | Neil Allen | Neil Allen | Jim Bibby | | 292 | 349 | -57 |
| 1983-07-08 | @ LAN | 77 | W 4-3 | 35-42 | 5 | 41,397 | John Candelaria | Jerry Reuss | John Candelaria | Jerry Reuss | Kent Tekulve | 296 | 352 | -56 |
| 1983-07-09 | @ LAN | 78 | W 3-0 | 36-42 | 5 | 46,046 | Larry McWilliams | Alejandro Pena | Larry McWilliams | Alejandro Pena | | 299 | 352 | -53 |
| 1983-07-10 | @ LAN | 79 | L 3-10 | 36-43 | 5 | 42,480 | Rick Rhoden | Burt Hooton | Burt Hooton | Rick Rhoden | Steve Howe | 302 | 362 | -60 |
| 1983-07-11 | @ SFN | 80 | W 3-2 | 37-43 | 5 | 18,429 | Don Robinson | Fred Breining | Manny Sarmiento | Fred Breining | Rod Scurry | 305 | 364 | -59 |
| 1983-07-12 | @ SFN | 81 | W 6-2 | 38-43 | 4 | 7,789 | Lee Tunnell | Bill Laskey | Lee Tunnell | Bill Laskey | Cecilio Guante | 311 | 366 | -55 |
| 1983-07-13 | @ SFN | 82 | W 7-6 | 39-43 | 4 | 14,316 | John Candelaria | Mark Davis | Manny Sarmiento | Greg Minton | Kent Tekulve | 318 | 372 | -54 |
| 1983-07-14 | @ SDN | 83 | W 8-6 | 40-43 | 4 | 17,001 | Larry McWilliams | Dave Dravecky | Cecilio Guante | John Montefusco | Jim Bibby | 326 | 378 | -52 |
| 1983-07-15 | @ SDN | 84 | W 4-2 | 41-43 | 4 | 15,601 | Rick Rhoden | Mark Thurmond | Kent Tekulve | Mark Thurmond | | 330 | 380 | -50 |
| 1983-07-16 | @ SDN | 85 | W 3-2 | 42-43 | 3 | 26,414 | Don Robinson | Ed Whitson | Don Robinson | Ed Whitson | Kent Tekulve | 333 | 382 | -49 |
| 1983-07-17 | @ SDN | 86 | W 4-3 | 43-43 | 3 | 17,897 | Lee Tunnell | Eric Show | Lee Tunnell | Eric Show | Kent Tekulve | 337 | 385 | -48 |
| 1983-07-19 | vs LAN | 87 | W 4-1 | 44-44 | 3 | 0 | John Candelaria | Jerry Reuss | John Candelaria | Jerry Reuss | Rod Scurry | 341 | 386 | -45 |
| 1983-07-19 | vs LAN | 88 | L 2-3 | 44-44 | 3 | 31,304 | Larry McWilliams | Alejandro Pena | Steve Howe | Manny Sarmiento | Tom Niedenfuer | 343 | 389 | -46 |
| 1983-07-20 | vs LAN | 89 | W 7-3 | 45-44 | 2 | 16,561 | Rick Rhoden | Burt Hooton | Rick Rhoden | Burt Hooton | | 350 | 392 | -42 |
| 1983-07-21 | vs LAN | 90 | W 5-4 | 46-44 | 2 | 16,351 | Don Robinson | Fernando Valenzuela | Kent Tekulve | Steve Howe | | 355 | 396 | -41 |
| 1983-07-22 | vs SFN | 91 | L 3-5 | 46-45 | 2 | 23,834 | Lee Tunnell | Fred Breining | Jim Barr | Rod Scurry | Greg Minton | 358 | 401 | -43 |
| 1983-07-23 | vs SFN | 92 | W 5-2 | 47-45 | 1 | 14,585 | Jose DeLeon | Bill Laskey | Jose DeLeon | Renie Martin | Rod Scurry | 363 | 403 | -40 |
| 1983-07-24 | vs SFN | 93 | W 3-1 | 48-46 | 1 | 0 | John Candelaria | Mike Krukow | Rod Scurry | Mike Krukow | Kent Tekulve | 366 | 404 | -38 |
| 1983-07-24 | vs SFN | 94 | L 5-8 | 48-46 | 1 | 39,660 | Larry McWilliams | Mark Davis | Greg Minton | Rod Scurry | Andy McGaffigan | 371 | 412 | -41 |
| 1983-07-25 | vs SDN | 95 | W 6-3 | 49-46 | 1 | 12,161 | Rick Rhoden | Dave Dravecky | Rick Rhoden | Dave Dravecky | Cecilio Guante | 377 | 415 | -38 |
| 1983-07-26 | vs SDN | 96 | L 1-6 | 50-47 | 1 | 0 | Don Robinson | Mark Thurmond | Mark Thurmond | Don Robinson | Luis DeLeon | 378 | 421 | -43 |
| 1983-07-26 | vs SDN | 97 | W 10-5 | 50-47 | 1 | 20,660 | Lee Tunnell | Ed Whitson | Lee Tunnell | Ed Whitson | | 388 | 426 | -38 |
| 1983-07-27 | vs SDN | 98 | W 10-1 | 51-47 | 1 | 18,793 | Jose DeLeon | Eric Show | Jose DeLeon | Eric Show | | 398 | 427 | -29 |
| 1983-07-28 | @ NYN | 99 | W 6-2 | 52-47 | 1 | 12,233 | Larry McWilliams | Craig Swan | Larry McWilliams | Craig Swan | Rod Scurry | 404 | 429 | -25 |
| 1983-07-29 | @ NYN | 100 | W 2-1 | 53-47 | 1 | 14,306 | John Candelaria | Tom Seaver | John Candelaria | Tom Seaver | Cecilio Guante | 406 | 430 | -24 |
| 1983-07-30 | @ NYN | 101 | W 6-3 | 54-47 | 1 | 17,721 | Rick Rhoden | Ed Lynch | Rod Scurry | Ed Lynch | Manny Sarmiento | 412 | 433 | -21 |
| 1983-07-31 | @ NYN | 102 | L 6-7 | 54-49 | 1 | 0 | Lee Tunnell | Walt Terrell | Jesse Orosco | Jim Bibby | | 418 | 440 | -22 |
| 1983-07-31 | @ NYN | 103 | L 0-1 | 54-49 | 1 | 17,591 | Jose DeLeon | Mike Torrez | Jesse Orosco | Manny Sarmiento | | 418 | 441 | -23 |
| 1983-08-02 | vs PHI | 104 | W 10-3 | 55-49 | 1 | 25,130 | Larry McWilliams | Kevin Gross | Larry McWilliams | Kevin Gross | | 428 | 444 | -16 |
| 1983-08-03 | vs PHI | 105 | W 7-2 | 56-49 | 1 | 23,070 | John Candelaria | Marty Bystrom | John Candelaria | Marty Bystrom | Kent Tekulve | 435 | 446 | -11 |
| 1983-08-04 | vs PHI | 106 | L 1-5 | 56-50 | 1 | 20,574 | Rick Rhoden | Charles Hudson | Charles Hudson | Rick Rhoden | Al Holland | 436 | 451 | -15 |
| 1983-08-05 | vs MON | 107 | L 1-7 | 56-51 | 2 | 33,089 | Jose DeLeon | Bill Gullickson | Bill Gullickson | Jose DeLeon | | 437 | 458 | -21 |
| 1983-08-06 | vs MON | 108 | L 3-7 | 56-52 | 2 | 24,561 | Lee Tunnell | Bryn Smith | Bryn Smith | Lee Tunnell | | 440 | 465 | -25 |
| 1983-08-07 | vs MON | 109 | L 0-6 | 56-53 | 3 | 29,187 | Larry McWilliams | Steve Rogers | Steve Rogers | Larry McWilliams | | 440 | 471 | -31 |
| 1983-08-08 | @ PHI | 110 | L 5-14 | 56-54 | 3 | 38,080 | John Candelaria | Charles Hudson | Charles Hudson | John Candelaria | | 445 | 485 | -40 |
| 1983-08-09 | @ PHI | 111 | W 3-1 | 57-54 | 3 | 37,719 | Rick Rhoden | John Denny | Kent Tekulve | Al Holland | | 448 | 486 | -38 |
| 1983-08-10 | @ PHI | 112 | L 2-4 | 57-55 | 3 | 38,705 | Jose DeLeon | Steve Carlton | Steve Carlton | Jose DeLeon | Al Holland | 450 | 490 | -40 |
| 1983-08-12 | @ MON | 113 | W 6-3 | 58-55 | 3 | 45,862 | Larry McWilliams | Steve Rogers | Larry McWilliams | Steve Rogers | Cecilio Guante | 456 | 493 | -37 |
| 1983-08-13 | @ MON | 114 | W 2-0 | 59-55 | 2 | 38,658 | John Candelaria | Bryn Smith | John Candelaria | Bryn Smith | Kent Tekulve | 458 | 493 | -35 |
| 1983-08-14 | @ MON | 115 | W 5-3 | 60-55 | 2 | 50,062 | Rick Rhoden | Ray Burris | Rick Rhoden | Dan Schatzeder | Kent Tekulve | 463 | 496 | -33 |
| 1983-08-15 | vs NYN | 116 | W 4-2 | 61-55 | 2 | 15,053 | Jose DeLeon | Mike Torrez | Jose DeLeon | Mike Torrez | Kent Tekulve | 467 | 498 | -31 |
| 1983-08-16 | vs NYN | 117 | W 3-1 | 62-55 | 2 | 12,061 | Lee Tunnell | Craig Swan | Lee Tunnell | Craig Swan | Cecilio Guante | 470 | 499 | -29 |
| 1983-08-18 | vs CIN | 118 | L 5-6 | 62-56 | 2 | 18,007 | John Candelaria | Jeff Russell | Tom Hume | Kent Tekulve | Ben Hayes | 475 | 505 | -30 |
| 1983-08-19 | vs CIN | 119 | L 1-2 | 62-57 | 2 | 15,995 | Rick Rhoden | Mario Soto | Mario Soto | Rick Rhoden | | 476 | 507 | -31 |
| 1983-08-20 | vs CIN | 120 | W 4-0 | 63-57 | 2 | 44,481 | Jose DeLeon | Bruce Berenyi | Jose DeLeon | Bruce Berenyi | | 480 | 507 | -27 |
| 1983-08-21 | vs CIN | 121 | L 4-6 | 63-58 | 2 | 24,635 | Larry McWilliams | Charlie Puleo | Bill Scherrer | Cecilio Guante | | 484 | 513 | -29 |
| 1983-08-23 | vs HOU | 122 | L 5-6 | 63-60 | 2 | 0 | John Candelaria | Mike Scott | Vern Ruhle | Kent Tekulve | Frank DiPino | 489 | 519 | -30 |
| 1983-08-23 | vs HOU | 123 | L 1-2 | 63-60 | 2 | 17,484 | Lee Tunnell | Joe Niekro | Joe Niekro | Lee Tunnell | Bill Dawley | 490 | 521 | -31 |
| 1983-08-24 | vs HOU | 124 | L 4-10 | 63-61 | 2 | 14,279 | Rick Rhoden | Mike Madden | Mike Madden | Rick Rhoden | Mike LaCoss | 494 | 531 | -37 |
| 1983-08-25 | vs HOU | 125 | W 5-3 | 64-61 | 2 | 11,019 | Jose DeLeon | Bob Knepper | Jose DeLeon | Bob Knepper | Rod Scurry | 499 | 534 | -35 |
| 1983-08-26 | vs ATL | 126 | W 9-1 | 65-61 | 2 | 23,772 | Larry McWilliams | Pascual Perez | Larry McWilliams | Pascual Perez | | 508 | 535 | -27 |
| 1983-08-27 | vs ATL | 127 | W 2-0 | 66-61 | 1 | 22,811 | Lee Tunnell | Ken Dayley | Lee Tunnell | Ken Dayley | | 510 | 535 | -25 |
| 1983-08-28 | vs ATL | 128 | L 1-2 | 66-62 | 1 | 26,193 | John Candelaria | Pete Falcone | Pete Falcone | John Candelaria | Terry Forster | 511 | 537 | -26 |
| 1983-08-29 | @ CIN | 129 | W 2-1 | 67-62 | 1 | 11,173 | Rick Rhoden | Mario Soto | Rick Rhoden | Mario Soto | Kent Tekulve | 513 | 538 | -25 |
| 1983-08-30 | @ CIN | 130 | W 5-3 | 68-62 | 1 | 10,160 | Jose DeLeon | Jeff Russell | Jose DeLeon | Jeff Russell | Kent Tekulve | 518 | 541 | -23 |
| 1983-08-31 | @ HOU | 131 | L 1-4 | 68-63 | 1 | 12,347 | Larry McWilliams | Joe Niekro | Joe Niekro | Rod Scurry | | 519 | 545 | -26 |
| 1983-09-01 | @ HOU | 132 | L 0-3 | 68-64 | 2 | 7,645 | Lee Tunnell | Nolan Ryan | Nolan Ryan | Cecilio Guante | Frank DiPino | 519 | 548 | -29 |
| 1983-09-02 | @ ATL | 133 | W 4-1 | 69-64 | 2 | 23,998 | John Candelaria | Ken Dayley | John Candelaria | Ken Dayley | Kent Tekulve | 523 | 549 | -26 |
| 1983-09-03 | @ ATL | 134 | W 6-2 | 70-64 | 1 | 31,233 | Rick Rhoden | Phil Niekro | Jim Bibby | Steve Bedrosian | Cecilio Guante | 529 | 551 | -22 |
| 1983-09-04 | @ ATL | 135 | L 5-6 | 70-65 | 1 | 24,610 | Jose DeLeon | Craig McMurtry | Terry Forster | Jim Bibby | Steve Bedrosian | 534 | 557 | -23 |
| 1983-09-05 | @ SLN | 136 | L 4-7 | 70-67 | 2 | 0 | Larry McWilliams | Neil Allen | Dave LaPoint | Rod Scurry | | 538 | 564 | -26 |
| 1983-09-05 | @ SLN | 137 | L 6-7 | 70-67 | 2 | 39,687 | Alfonso Pulido | Bob Forsch | Neil Allen | Cecilio Guante | | 544 | 571 | -27 |
| 1983-09-06 | @ SLN | 138 | W 5-0 | 71-67 | 2 | 23,604 | Lee Tunnell | John Stuper | Lee Tunnell | John Stuper | | 549 | 571 | -22 |
| 1983-09-07 | @ SLN | 139 | L 2-5 | 71-68 | 3 | 25,981 | Rick Rhoden | Danny Cox | Danny Cox | Rick Rhoden | Bruce Sutter | 551 | 576 | -25 |
| 1983-09-09 | vs PHI | 140 | L 3-4 | 71-69 | 4 | 24,304 | John Candelaria | Steve Carlton | Guillermo Hernandez | Jim Bibby | | 554 | 580 | -26 |
| 1983-09-10 | vs PHI | 141 | W 6-5 | 72-69 | 3 | 26,246 | Larry McWilliams | Kevin Gross | Kent Tekulve | Al Holland | | 560 | 585 | -25 |
| 1983-09-11 | vs PHI | 142 | L 3-5 | 72-70 | 4 | 19,130 | Jose DeLeon | Charles Hudson | Ron Reed | Cecilio Guante | | 563 | 590 | -27 |
| 1983-09-12 | vs SLN | 143 | W 7-5 | 73-70 | 3 | 10,458 | Lee Tunnell | Danny Cox | Lee Tunnell | Danny Cox | Manny Sarmiento | 570 | 595 | -25 |
| 1983-09-13 | vs SLN | 144 | W 6-0 | 74-70 | 3 | 9,771 | Rick Rhoden | Joaquin Andujar | Rick Rhoden | Joaquin Andujar | | 576 | 595 | -19 |
| 1983-09-14 | vs CHN | 145 | W 6-3 | 75-70 | 2 | 16,329 | John Candelaria | Steve Trout | John Candelaria | Steve Trout | | 582 | 598 | -16 |
| 1983-09-15 | vs CHN | 146 | W 8-4 | 76-70 | 2 | 7,943 | Larry McWilliams | Chuck Rainey | Larry McWilliams | Chuck Rainey | | 590 | 602 | -12 |
| 1983-09-16 | vs MON | 147 | W 9-0 | 77-70 | 2 | 13,057 | Jose DeLeon | Charlie Lea | Jose DeLeon | Charlie Lea | | 599 | 602 | -3 |
| 1983-09-17 | vs MON | 148 | W 5-4 | 78-70 | 2 | 29,748 | Lee Tunnell | Steve Rogers | Jim Bibby | Tom Dixon | | 604 | 606 | -2 |
| 1983-09-18 | vs MON | 149 | L 2-5 | 78-71 | 2 | 25,738 | Rick Rhoden | Scott Sanderson | Scott Sanderson | Rick Rhoden | Bob James | 606 | 611 | -5 |
| 1983-09-19 | @ NYN | 150 | L 4-5 | 78-72 | 2 | 6,381 | John Candelaria | Tom Seaver | Carlos Diaz | Kent Tekulve | | 610 | 616 | -6 |
| 1983-09-20 | @ NYN | 151 | W 4-0 | 79-72 | 2 | 3,112 | Larry McWilliams | Ed Lynch | Larry McWilliams | Ed Lynch | | 614 | 616 | -2 |
| 1983-09-21 | @ CHN | 152 | L 6-7 | 79-73 | 3 | 3,029 | Jose DeLeon | Chuck Rainey | Fergie Jenkins | Cecilio Guante | Lee Smith | 620 | 623 | -3 |
| 1983-09-22 | @ CHN | 153 | W 8-2 | 80-73 | 2 | 3,426 | Lee Tunnell | Rick Reuschel | Lee Tunnell | Rick Reuschel | | 628 | 625 | 3 |
| 1983-09-23 | @ MON | 154 | W 10-1 | 81-73 | 2 | 37,115 | Rick Rhoden | Scott Sanderson | Rick Rhoden | Scott Sanderson | | 638 | 626 | 12 |
| 1983-09-24 | @ MON | 155 | W 1-0 | 82-73 | 2 | 43,359 | John Candelaria | Bryn Smith | John Candelaria | Bryn Smith | Cecilio Guante | 639 | 626 | 13 |
| 1983-09-25 | @ MON | 156 | L 3-5 | 82-74 | 2 | 37,602 | Larry McWilliams | Bill Gullickson | Bill Gullickson | Larry McWilliams | Jeff Reardon | 642 | 631 | 11 |
| 1983-09-27 | vs NYN | 157 | L 3-4 | 82-75 | 2 | 10,913 | Jose DeLeon | Mike Torrez | Mike Torrez | Jose DeLeon | Doug Sisk | 645 | 635 | 10 |
| 1983-09-28 | vs NYN | 158 | L 2-4 | 82-76 | 2 | 8,672 | Lee Tunnell | Ron Darling | Ron Darling | Lee Tunnell | | 647 | 639 | 8 |
| 1983-09-29 | vs NYN | 159 | W 4-2 | 83-76 | 2 | 7,677 | Rick Rhoden | Scott Holman | Rick Rhoden | Scott Holman | Cecilio Guante | 651 | 641 | 10 |
| 1983-09-30 | @ PHI | 160 | L 1-2 | 83-77 | 2 | 26,685 | Larry McWilliams | John Denny | John Denny | Larry McWilliams | Al Holland | 652 | 643 | 9 |
| 1983-10-01 | @ PHI | 161 | L 3-5 | 83-78 | 2 | 34,763 | Jose DeLeon | Kevin Gross | Porfi Altamirano | Cecilio Guante | Don Carman | 655 | 648 | 7 |
| 1983-10-02 | @ PHI | 162 | W 4-0 | 84-78 | 2 | 33,284 | Lee Tunnell | Charles Hudson | Lee Tunnell | Charles Hudson | | 659 | 648 | 11 |