| 1963-04-09 | @ PIT | 1 | L 2-3 | 0-1 | 10 | 29,615 | Lew Burdette | Bob Friend | Roy Face | Bob Hendley | | 2 | 3 | -1 |
| 1963-04-10 | @ PIT | 2 | L 2-3 | 0-2 | 10 | 3,601 | Bob Shaw | Don Cardwell | Don Cardwell | Bob Shaw | Bob Veale | 4 | 6 | -2 |
| 1963-04-11 | vs NYN | 3 | W 6-1 | 1-2 | 8 | 26,120 | Warren Spahn | Jay Hook | Warren Spahn | Jay Hook | | 10 | 7 | 3 |
| 1963-04-13 | vs NYN | 4 | W 5-2 | 2-2 | 6 | 5,067 | Lew Burdette | Galen Cisco | Lew Burdette | Galen Cisco | | 15 | 9 | 6 |
| 1963-04-14 | vs NYN | 5 | W 1-0 | 3-2 | 5 | 5,576 | Bob Hendley | Roger Craig | Bob Hendley | Roger Craig | | 16 | 9 | 7 |
| 1963-04-15 | vs NYN | 6 | W 4-3 | 4-2 | 4 | 3,756 | Bob Shaw | Al Jackson | Claude Raymond | Tracy Stallard | | 20 | 12 | 8 |
| 1963-04-16 | vs PHI | 7 | W 8-0 | 5-2 | 2 | 4,098 | Warren Spahn | Cal McLish | Warren Spahn | Cal McLish | | 28 | 12 | 16 |
| 1963-04-17 | vs PHI | 8 | W 6-5 | 6-2 | 1 | 10,569 | Lew Burdette | Paul Brown | Lew Burdette | Paul Brown | Claude Raymond | 34 | 17 | 17 |
| 1963-04-18 | vs PHI | 9 | W 6-5 | 7-2 | 1 | 4,256 | Bob Hendley | Art Mahaffey | Claude Raymond | Ray Culp | | 40 | 22 | 18 |
| 1963-04-19 | @ NYN | 10 | L 4-5 | 7-3 | 2 | 8,104 | Bob Shaw | Roger Craig | Ken MacKenzie | Frank Funk | | 44 | 27 | 17 |
| 1963-04-20 | @ NYN | 11 | L 1-3 | 7-4 | 3 | 13,703 | Warren Spahn | Al Jackson | Al Jackson | Warren Spahn | | 45 | 30 | 15 |
| 1963-04-21 | @ NYN | 12 | L 5-8 | 7-6 | 4 | 0 | Tony Cloninger | Jay Hook | Ken MacKenzie | Claude Raymond | Roger Craig | 50 | 38 | 12 |
| 1963-04-21 | @ NYN | 13 | L 2-9 | 7-6 | 4 | 26,675 | Lew Burdette | Galen Cisco | Galen Cisco | Lew Burdette | Ken MacKenzie | 52 | 47 | 5 |
| 1963-04-22 | @ LAN | 14 | W 10-2 | 8-6 | 4 | 18,795 | Bob Hendley | Don Drysdale | Bob Hendley | Don Drysdale | | 62 | 49 | 13 |
| 1963-04-23 | @ LAN | 15 | L 1-2 | 8-7 | 5 | 20,298 | Bob Shaw | Sandy Koufax | Ron Perranoski | Claude Raymond | | 63 | 51 | 12 |
| 1963-04-24 | @ HOU | 16 | W 4-3 | 9-7 | 4 | 7,367 | Warren Spahn | Turk Farrell | Warren Spahn | Turk Farrell | | 67 | 54 | 13 |
| 1963-04-25 | @ HOU | 17 | L 5-7 | 9-8 | 5 | 5,270 | Tony Cloninger | Don Nottebart | Don Nottebart | Hank Fischer | Don McMahon | 72 | 61 | 11 |
| 1963-04-26 | @ SFN | 18 | W 9-2 | 10-8 | 4 | 20,586 | Lew Burdette | Jack Fisher | Lew Burdette | Jack Fisher | | 81 | 63 | 18 |
| 1963-04-27 | @ SFN | 19 | W 6-5 | 11-8 | 3 | 21,103 | Bob Hendley | Jack Sanford | Claude Raymond | Gaylord Perry | Tony Cloninger | 87 | 68 | 19 |
| 1963-04-28 | @ SFN | 20 | W 3-1 | 12-8 | 3 | 32,144 | Warren Spahn | Juan Marichal | Warren Spahn | Juan Marichal | | 90 | 69 | 21 |
| 1963-04-30 | @ SLN | 21 | L 1-2 | 12-9 | 3 | 7,049 | Denny Lemaster | Curt Simmons | Curt Simmons | Denny Lemaster | | 91 | 71 | 20 |
| 1963-05-01 | @ CIN | 22 | L 3-4 | 12-10 | 4 | 3,981 | Lew Burdette | Jim O'Toole | Jim O'Toole | Lew Burdette | Al Worthington | 94 | 75 | 19 |
| 1963-05-02 | @ CIN | 23 | W 8-0 | 13-10 | 4 | 4,040 | Bob Hendley | Joey Jay | Bob Hendley | Joey Jay | | 102 | 75 | 27 |
| 1963-05-03 | vs CHN | 24 | L 7-10 | 13-11 | 4 | 15,113 | Warren Spahn | Bob Buhl | Jim Brewer | Claude Raymond | Lindy McDaniel | 109 | 85 | 24 |
| 1963-05-04 | vs CHN | 25 | L 5-7 | 13-12 | 5 | 8,524 | Bob Shaw | Glen Hobbie | Paul Toth | Bob Shaw | Lindy McDaniel | 114 | 92 | 22 |
| 1963-05-05 | vs CHN | 26 | L 2-3 | 13-13 | 5 | 10,024 | Tony Cloninger | Cal Koonce | Cal Koonce | Tony Cloninger | Lindy McDaniel | 116 | 95 | 21 |
| 1963-05-07 | vs SFN | 27 | L 2-5 | 13-14 | 6 | 7,299 | Lew Burdette | Juan Marichal | Juan Marichal | Lew Burdette | | 118 | 100 | 18 |
| 1963-05-08 | vs SFN | 28 | L 5-12 | 13-15 | 6 | 6,902 | Bob Hendley | Jack Fisher | Jack Fisher | Bob Hendley | Bobby Bolin | 123 | 112 | 11 |
| 1963-05-09 | vs SFN | 29 | L 2-8 | 13-16 | 7 | 3,920 | Warren Spahn | Billy O'Dell | Billy O'Dell | Warren Spahn | | 125 | 120 | 5 |
| 1963-05-10 | @ PHI | 30 | W 4-1 | 14-16 | 6 | 11,904 | Denny Lemaster | Chris Short | Denny Lemaster | Chris Short | | 129 | 121 | 8 |
| 1963-05-11 | @ PHI | 31 | L 5-8 | 14-17 | 7 | 3,192 | Bob Shaw | Art Mahaffey | Ryne Duren | Hank Fischer | | 134 | 129 | 5 |
| 1963-05-12 | @ PHI | 32 | L 3-4 | 14-19 | 9 | 0 | Lew Burdette | Dallas Green | Jack Baldschun | Tony Cloninger | | 137 | 133 | 4 |
| 1963-05-12 | @ PHI | 33 | L 5-6 | 14-19 | 9 | 9,836 | Bob Hendley | Ray Culp | Johnny Klippstein | Lew Burdette | | 142 | 139 | 3 |
| 1963-05-14 | vs SLN | 34 | W 4-3 | 15-19 | 9 | 5,055 | Warren Spahn | Bob Gibson | Warren Spahn | Bob Gibson | | 146 | 142 | 4 |
| 1963-05-15 | vs SLN | 35 | W 9-3 | 16-19 | 8 | 4,851 | Bob Hendley | Curt Simmons | Bob Hendley | Curt Simmons | | 155 | 145 | 10 |
| 1963-05-16 | vs SLN | 36 | W 5-2 | 17-19 | 7 | 3,157 | Denny Lemaster | Ray Washburn | Denny Lemaster | Ray Washburn | | 160 | 147 | 13 |
| 1963-05-18 | @ CHN | 37 | W 10-6 | 18-19 | 5 | 16,162 | Bob Shaw | Bob Buhl | Bob Shaw | Bob Buhl | Claude Raymond | 170 | 153 | 17 |
| 1963-05-19 | @ CHN | 38 | L 2-3 | 19-20 | 5 | 0 | Lew Burdette | Dick Ellsworth | Dick Ellsworth | Lew Burdette | | 172 | 156 | 16 |
| 1963-05-19 | @ CHN | 39 | W 8-2 | 19-20 | 5 | 21,007 | Warren Spahn | Cal Koonce | Warren Spahn | Cal Koonce | | 180 | 158 | 22 |
| 1963-05-21 | vs CIN | 40 | L 0-2 | 19-21 | 7 | 3,204 | Bob Hendley | Jim Maloney | Jim Maloney | Bob Hendley | Bill Henry | 180 | 160 | 20 |
| 1963-05-23 | vs CIN | 41 | L 0-2 | 19-22 | 7 | 4,272 | Denny Lemaster | Jim O'Toole | Jim O'Toole | Denny Lemaster | | 180 | 162 | 18 |
| 1963-05-24 | vs PIT | 42 | L 2-7 | 19-23 | 7 | 7,731 | Warren Spahn | Bob Friend | Bob Friend | Warren Spahn | | 182 | 169 | 13 |
| 1963-05-25 | vs PIT | 43 | W 1-0 | 20-23 | 7 | 7,981 | Bob Shaw | Joe Gibbon | Bob Shaw | Joe Gibbon | | 183 | 169 | 14 |
| 1963-05-26 | vs PIT | 44 | L 2-5 | 20-24 | 8 | 9,794 | Lew Burdette | Don Schwall | Al McBean | Frank Funk | Bob Veale | 185 | 174 | 11 |
| 1963-05-28 | vs LAN | 45 | L 0-7 | 20-25 | 8 | 4,573 | Denny Lemaster | Sandy Koufax | Sandy Koufax | Denny Lemaster | | 185 | 181 | 4 |
| 1963-05-29 | vs LAN | 46 | W 3-3 | 21-25 | 8 | 11,968 | Bob Hendley | Johnny Podres | | | | 188 | 184 | 4 |
| 1963-05-30 | vs LAN | 47 | W 7-4 | 22-25 | 8 | 12,403 | Warren Spahn | Don Drysdale | Warren Spahn | Don Drysdale | Claude Raymond | 195 | 188 | 7 |
| 1963-05-31 | vs HOU | 48 | L 2-3 | 22-26 | 8 | 6,619 | Bob Shaw | Ken Johnson | Ken Johnson | Bob Shaw | | 197 | 191 | 6 |
| 1963-06-01 | vs HOU | 49 | W 4-1 | 23-26 | 7 | 5,135 | Lew Burdette | Don Nottebart | Lew Burdette | Don Nottebart | | 201 | 192 | 9 |
| 1963-06-02 | vs HOU | 50 | L 1-3 | 23-27 | 8 | 8,810 | Denny Lemaster | Bob Bruce | Hal Woodeshick | Ron Piche | | 202 | 195 | 7 |
| 1963-06-04 | @ NYN | 51 | W 3-2 | 24-27 | 7 | 10,168 | Bob Hendley | Carl Willey | Claude Raymond | Carl Willey | Bob Shaw | 205 | 197 | 8 |
| 1963-06-05 | @ NYN | 52 | W 11-9 | 25-27 | 7 | 5,141 | Warren Spahn | Jay Hook | Lew Burdette | Larry Bearnarth | | 216 | 206 | 10 |
| 1963-06-07 | @ PIT | 53 | W 9-5 | 25-27 | 7 | 15,084 | Bob Shaw | Al McBean | Frank Funk | Harvey Haddix | Bob Hendley | 225 | 211 | 14 |
| 1963-06-08 | @ PIT | 54 | L 4-6 | 25-28 | 7 | 9,650 | Lew Burdette | Vern Law | Al McBean | Tony Cloninger | | 229 | 217 | 12 |
| 1963-06-09 | @ PIT | 55 | L 0-4 | 26-29 | 7 | 0 | Denny Lemaster | Bob Friend | Bob Friend | Denny Lemaster | | 229 | 221 | 8 |
| 1963-06-09 | @ PIT | 56 | W 5-3 | 26-29 | 7 | 18,209 | Warren Spahn | Don Cardwell | Warren Spahn | Don Cardwell | Bob Shaw | 234 | 224 | 10 |
| 1963-06-10 | @ PHI | 57 | L 2-6 | 26-30 | 8 | 9,404 | Bob Hendley | Ray Culp | Ray Culp | Bob Hendley | | 236 | 230 | 6 |
| 1963-06-11 | @ PHI | 58 | L 7-8 | 26-31 | 8 | 11,107 | Dan Schneider | Cal McLish | Jack Baldschun | Bob Shaw | | 243 | 238 | 5 |
| 1963-06-12 | vs NYN | 59 | W 9-0 | 27-31 | 8 | 5,470 | Lew Burdette | Galen Cisco | Lew Burdette | Galen Cisco | | 252 | 238 | 14 |
| 1963-06-14 | vs PHI | 60 | W 3-0 | 28-31 | 7 | 10,937 | Warren Spahn | Ray Culp | Warren Spahn | Ray Culp | | 255 | 238 | 17 |
| 1963-06-15 | vs PHI | 61 | W 5-3 | 29-31 | 6 | 6,855 | Denny Lemaster | John Boozer | Tony Cloninger | Johnny Klippstein | | 260 | 241 | 19 |
| 1963-06-16 | vs PHI | 62 | W 5-3 | 30-32 | 6 | 0 | Bob Hendley | Cal McLish | Frank Funk | Cal McLish | Claude Raymond | 265 | 244 | 21 |
| 1963-06-16 | vs PHI | 63 | L 4-7 | 30-32 | 6 | 16,326 | Dan Schneider | Art Mahaffey | Jack Baldschun | Claude Raymond | Dallas Green | 269 | 251 | 18 |
| 1963-06-17 | vs PIT | 64 | L 3-9 | 30-33 | 7 | 8,631 | Ron Piche | Don Cardwell | Don Cardwell | Tony Cloninger | | 272 | 260 | 12 |
| 1963-06-18 | vs PIT | 65 | W 7-5 | 31-33 | 6 | 7,397 | Warren Spahn | Bob Friend | Bob Shaw | Al McBean | | 279 | 265 | 14 |
| 1963-06-19 | vs PIT | 66 | L 2-6 | 31-33 | 6 | 6,715 | Bob Sadowski | Earl Francis | Earl Francis | Bob Sadowski | Joe Gibbon | 281 | 271 | 10 |
| 1963-06-20 | vs PIT | 67 | W 2-1 | 32-33 | 6 | 6,496 | Denny Lemaster | Don Schwall | Denny Lemaster | Harvey Haddix | | 283 | 272 | 11 |
| 1963-06-21 | vs SFN | 68 | W 6-3 | 33-33 | 6 | 13,753 | Tony Cloninger | Bobby Bolin | Tony Cloninger | Bobby Bolin | Bob Hendley | 289 | 275 | 14 |
| 1963-06-22 | vs SFN | 69 | L 0-3 | 33-34 | 6 | 11,208 | Bob Shaw | Billy O'Dell | Billy O'Dell | Bob Shaw | | 289 | 278 | 11 |
| 1963-06-23 | vs SFN | 70 | W 10-4 | 34-34 | 6 | 19,016 | Warren Spahn | Jack Sanford | Warren Spahn | Jack Sanford | | 299 | 282 | 17 |
| 1963-06-24 | vs HOU | 71 | W 3-0 | 35-34 | 6 | 6,592 | Denny Lemaster | Hal Brown | Denny Lemaster | Hal Brown | | 302 | 282 | 20 |
| 1963-06-25 | vs HOU | 72 | W 4-0 | 36-34 | 6 | 7,444 | Tony Cloninger | Ken Johnson | Tony Cloninger | Ken Johnson | | 306 | 282 | 24 |
| 1963-06-26 | vs HOU | 73 | L 2-7 | 36-35 | 6 | 7,729 | Bob Shaw | Bob Bruce | Hal Woodeshick | Bob Hendley | | 308 | 289 | 19 |
| 1963-06-28 | @ LAN | 74 | W 1-0 | 37-35 | 6 | 44,894 | Warren Spahn | Don Drysdale | Warren Spahn | Don Drysdale | | 309 | 289 | 20 |
| 1963-06-29 | @ LAN | 75 | L 5-6 | 37-36 | 6 | 44,075 | Denny Lemaster | Sandy Koufax | Ron Perranoski | Bob Shaw | | 314 | 295 | 19 |
| 1963-06-30 | @ LAN | 76 | W 7-0 | 38-36 | 6 | 29,953 | Tony Cloninger | Nick Willhite | Tony Cloninger | Nick Willhite | | 321 | 295 | 26 |
| 1963-07-01 | @ LAN | 77 | L 1-2 | 38-37 | 6 | 21,603 | Bob Sadowski | Johnny Podres | Johnny Podres | Bob Sadowski | | 322 | 297 | 25 |
| 1963-07-02 | @ SFN | 78 | L 0-1 | 38-38 | 6 | 15,921 | Warren Spahn | Juan Marichal | Juan Marichal | Warren Spahn | | 322 | 298 | 24 |
| 1963-07-03 | @ SFN | 79 | W 6-5 | 39-38 | 6 | 11,189 | Denny Lemaster | Jack Sanford | Frank Funk | Jack Sanford | Bob Shaw | 328 | 303 | 25 |
| 1963-07-04 | @ SFN | 80 | W 6-3 | 40-38 | 6 | 23,557 | Tony Cloninger | Jack Fisher | Tony Cloninger | Gaylord Perry | Bob Hendley | 334 | 306 | 28 |
| 1963-07-05 | @ HOU | 81 | L 2-4 | 40-39 | 6 | 7,111 | Bob Sadowski | Bob Bruce | Bob Bruce | Bob Sadowski | Jim Dickson | 336 | 310 | 26 |
| 1963-07-06 | @ HOU | 82 | W 7-1 | 42-39 | 6 | 0 | Denny Lemaster | Don McMahon | Denny Lemaster | Don McMahon | | 343 | 311 | 32 |
| 1963-07-06 | @ HOU | 83 | W 2-0 | 42-39 | 6 | 13,776 | Bob Shaw | Hal Brown | Bob Shaw | Hal Brown | | 345 | 311 | 34 |
| 1963-07-07 | @ HOU | 84 | W 4-0 | 43-39 | 6 | 9,665 | Warren Spahn | Jim Umbricht | Warren Spahn | Jim Umbricht | | 349 | 311 | 38 |
| 1963-07-11 | @ SLN | 85 | L 3-6 | 44-40 | 6 | 0 | Denny Lemaster | Ernie Broglio | Ernie Broglio | Denny Lemaster | Ron Taylor | 352 | 317 | 35 |
| 1963-07-11 | @ SLN | 86 | W 5-3 | 44-40 | 6 | 32,078 | Bob Hendley | Lew Burdette | Bob Hendley | Lew Burdette | Bob Shaw | 357 | 320 | 37 |
| 1963-07-12 | @ SLN | 87 | L 3-5 | 44-41 | 6 | 16,832 | Tony Cloninger | Bob Gibson | Bob Gibson | Tony Cloninger | Barney Schultz | 360 | 325 | 35 |
| 1963-07-13 | @ SLN | 88 | W 7-5 | 45-41 | 6 | 13,032 | Hank Fischer | Curt Simmons | Hank Fischer | Curt Simmons | Claude Raymond | 367 | 330 | 37 |
| 1963-07-14 | @ CIN | 89 | L 3-5 | 46-42 | 6 | 0 | Bob Shaw | John Tsitouris | John Tsitouris | Bob Shaw | Jim Owens | 370 | 335 | 35 |
| 1963-07-14 | @ CIN | 90 | W 7-6 | 46-42 | 6 | 18,905 | Tony Cloninger | Joey Jay | Tony Cloninger | Joey Jay | Bob Shaw | 377 | 341 | 36 |
| 1963-07-15 | @ CIN | 91 | L 3-4 | 46-43 | 7 | 6,188 | Denny Lemaster | Joe Nuxhall | Al Worthington | Frank Funk | | 380 | 345 | 35 |
| 1963-07-16 | @ CHN | 92 | L 0-1 | 46-44 | 7 | 14,527 | Bob Sadowski | Bob Buhl | Bob Buhl | Bob Sadowski | Lindy McDaniel | 380 | 346 | 34 |
| 1963-07-17 | @ CHN | 93 | W 6-4 | 47-44 | 6 | 17,094 | Hank Fischer | Glen Hobbie | Hank Fischer | Paul Toth | Bob Shaw | 386 | 350 | 36 |
| 1963-07-18 | @ CHN | 94 | L 2-3 | 47-45 | 6 | 15,231 | Tony Cloninger | Larry Jackson | Larry Jackson | Tony Cloninger | Lindy McDaniel | 388 | 353 | 35 |
| 1963-07-19 | vs LAN | 95 | L 2-4 | 47-46 | 7 | 18,547 | Bob Hendley | Don Drysdale | Don Drysdale | Bob Hendley | | 390 | 357 | 33 |
| 1963-07-20 | vs LAN | 96 | L 4-5 | 47-47 | 8 | 11,804 | Denny Lemaster | Sandy Koufax | Ron Perranoski | Claude Raymond | | 394 | 362 | 32 |
| 1963-07-21 | vs LAN | 97 | W 7-2 | 49-47 | 8 | 0 | Bob Sadowski | Bob Miller | Bob Sadowski | Bob Miller | Bob Shaw | 401 | 364 | 37 |
| 1963-07-21 | vs LAN | 98 | W 13-7 | 49-47 | 8 | 28,534 | Hank Fischer | Nick Willhite | Tony Cloninger | Larry Sherry | | 414 | 371 | 43 |
| 1963-07-23 | vs SLN | 99 | L 1-5 | 49-48 | 8 | 11,278 | Bob Hendley | Ray Sadecki | Ray Sadecki | Bob Hendley | Ron Taylor | 415 | 376 | 39 |
| 1963-07-24 | vs SLN | 100 | W 8-1 | 50-48 | 7 | 10,684 | Denny Lemaster | Ernie Broglio | Denny Lemaster | Ernie Broglio | | 423 | 377 | 46 |
| 1963-07-25 | vs SLN | 101 | L 1-3 | 50-49 | 8 | 22,331 | Warren Spahn | Lew Burdette | Lew Burdette | Warren Spahn | | 424 | 380 | 44 |
| 1963-07-26 | vs CIN | 102 | L 1-11 | 50-50 | 8 | 12,241 | Tony Cloninger | Joe Nuxhall | Joe Nuxhall | Tony Cloninger | | 425 | 391 | 34 |
| 1963-07-27 | vs CIN | 103 | W 5-4 | 51-50 | 7 | 6,845 | Bob Sadowski | Joey Jay | Hank Fischer | Jim Owens | Bob Shaw | 430 | 395 | 35 |
| 1963-07-28 | vs CIN | 104 | L 3-4 | 52-51 | 7 | 0 | Bob Hendley | Jim Maloney | Jim Maloney | Bob Hendley | Dom Zanni | 433 | 399 | 34 |
| 1963-07-28 | vs CIN | 105 | W 5-2 | 52-51 | 7 | 13,250 | Denny Lemaster | Bob Purkey | Denny Lemaster | Bob Purkey | | 438 | 401 | 37 |
| 1963-07-29 | vs CIN | 106 | W 8-2 | 53-51 | 7 | 6,142 | Warren Spahn | John Tsitouris | Warren Spahn | John Tsitouris | | 446 | 403 | 43 |
| 1963-07-30 | vs CHN | 107 | W 9-2 | 54-51 | 7 | 15,876 | Hank Fischer | Bob Buhl | Hank Fischer | Bob Buhl | | 455 | 405 | 50 |
| 1963-07-31 | vs CHN | 108 | L 2-3 | 54-52 | 7 | 27,919 | Tony Cloninger | Paul Toth | Lindy McDaniel | Bob Shaw | | 457 | 408 | 49 |
| 1963-08-01 | vs CHN | 109 | L 2-10 | 54-53 | 7 | 13,456 | Denny Lemaster | Larry Jackson | Larry Jackson | Denny Lemaster | | 459 | 418 | 41 |
| 1963-08-02 | vs NYN | 110 | W 8-0 | 55-54 | 7 | 0 | Bob Hendley | Al Jackson | Bob Hendley | Al Jackson | | 467 | 418 | 49 |
| 1963-08-02 | vs NYN | 111 | L 1-3 | 55-54 | 7 | 5,341 | Bob Sadowski | Galen Cisco | Galen Cisco | Bob Shaw | Ken MacKenzie | 468 | 421 | 47 |
| 1963-08-03 | vs NYN | 112 | W 10-7 | 56-54 | 7 | 5,384 | Hank Fischer | Tracy Stallard | Denny Lemaster | Tracy Stallard | Bob Shaw | 478 | 428 | 50 |
| 1963-08-04 | vs NYN | 113 | W 2-1 | 57-54 | 7 | 8,557 | Dan Schneider | Roger Craig | Dan Schneider | Roger Craig | Bob Shaw | 480 | 429 | 51 |
| 1963-08-06 | @ PIT | 114 | L 0-3 | 57-55 | 7 | 9,992 | Denny Lemaster | Don Cardwell | Don Cardwell | Denny Lemaster | | 480 | 432 | 48 |
| 1963-08-07 | @ PIT | 115 | L 4-5 | 57-55 | 7 | 8,124 | Hank Fischer | Don Schwall | Al McBean | Claude Raymond | | 484 | 437 | 47 |
| 1963-08-08 | @ PIT | 116 | L 0-1 | 57-56 | 7 | 9,110 | Bob Sadowski | Bob Friend | Bob Friend | Bob Sadowski | | 484 | 438 | 46 |
| 1963-08-09 | vs SLN | 117 | W 6-3 | 58-56 | 7 | 12,976 | Bob Hendley | Bob Gibson | Bob Hendley | Bob Gibson | | 490 | 441 | 49 |
| 1963-08-10 | vs SLN | 118 | L 5-6 | 58-57 | 7 | 10,560 | Denny Lemaster | Lew Burdette | Ron Taylor | Denny Lemaster | Sam Jones | 495 | 447 | 48 |
| 1963-08-11 | vs SLN | 119 | W 9-1 | 59-57 | 6 | 14,627 | Tony Cloninger | Curt Simmons | Tony Cloninger | Curt Simmons | | 504 | 448 | 56 |
| 1963-08-13 | vs LAN | 120 | W 4-3 | 60-57 | 6 | 13,529 | Warren Spahn | Johnny Podres | Warren Spahn | Bob Miller | | 508 | 451 | 57 |
| 1963-08-14 | vs LAN | 121 | W 5-3 | 61-57 | 7 | 13,429 | Bob Sadowski | Don Drysdale | Bob Sadowski | Don Drysdale | Denny Lemaster | 513 | 454 | 59 |
| 1963-08-15 | vs LAN | 122 | L 5-7 | 61-58 | 7 | 13,425 | Bob Hendley | Sandy Koufax | Ron Perranoski | Hank Fischer | | 518 | 461 | 57 |
| 1963-08-16 | vs HOU | 123 | W 3-2 | 62-58 | 7 | 7,506 | Tony Cloninger | Turk Farrell | Bob Shaw | Hal Woodeshick | | 521 | 463 | 58 |
| 1963-08-17 | vs HOU | 124 | W 4-1 | 63-58 | 6 | 8,937 | Denny Lemaster | Dick Drott | Denny Lemaster | Dick Drott | | 525 | 464 | 61 |
| 1963-08-18 | vs HOU | 125 | W 3-2 | 64-58 | 5 | 9,322 | Warren Spahn | Hal Brown | Warren Spahn | Hal Brown | | 528 | 466 | 62 |
| 1963-08-20 | @ SFN | 126 | W 6-1 | 65-58 | 5 | 19,983 | Bob Sadowski | Billy Pierce | Bob Sadowski | Billy Pierce | Bob Shaw | 534 | 467 | 67 |
| 1963-08-21 | @ SFN | 127 | W 6-2 | 66-58 | 5 | 14,015 | Bob Hendley | Gaylord Perry | Bob Hendley | Gaylord Perry | | 540 | 469 | 71 |
| 1963-08-22 | @ SFN | 128 | L 6-8 | 66-59 | 5 | 12,535 | Tony Cloninger | Juan Marichal | Juan Marichal | Tony Cloninger | | 546 | 477 | 69 |
| 1963-08-23 | @ LAN | 129 | W 6-1 | 67-59 | 5 | 36,013 | Warren Spahn | Dick Calmus | Warren Spahn | Dick Calmus | | 552 | 478 | 74 |
| 1963-08-24 | @ LAN | 130 | W 2-1 | 68-59 | 5 | 36,479 | Denny Lemaster | Johnny Podres | Denny Lemaster | Johnny Podres | Bob Shaw | 554 | 479 | 75 |
| 1963-08-25 | @ LAN | 131 | L 1-2 | 68-60 | 5 | 32,137 | Bob Sadowski | Sandy Koufax | Bob Miller | Bob Shaw | | 555 | 481 | 74 |
| 1963-08-26 | @ HOU | 132 | W 11-7 | 69-60 | 5 | 5,908 | Bob Hendley | Ken Johnson | Ron Piche | Dick Drott | Bobby Tiefenauer | 566 | 488 | 78 |
| 1963-08-27 | @ HOU | 133 | W 3-2 | 70-60 | 4 | 7,349 | Warren Spahn | Don Nottebart | Warren Spahn | Don Nottebart | | 569 | 490 | 79 |
| 1963-08-28 | @ HOU | 134 | W 9-1 | 71-60 | 4 | 6,695 | Tony Cloninger | Turk Farrell | Tony Cloninger | Turk Farrell | | 578 | 491 | 87 |
| 1963-08-30 | @ NYN | 135 | W 3-1 | 72-60 | 3 | 10,912 | Denny Lemaster | Tracy Stallard | Denny Lemaster | Tracy Stallard | Bob Shaw | 581 | 492 | 89 |
| 1963-08-31 | @ NYN | 136 | W 4-3 | 73-60 | 3 | 11,788 | Warren Spahn | Carl Willey | Warren Spahn | Carl Willey | | 585 | 495 | 90 |
| 1963-09-01 | @ NYN | 137 | L 4-6 | 73-61 | 3 | 12,659 | Bob Sadowski | Grover Powell | Larry Bearnarth | Bobby Tiefenauer | | 589 | 501 | 88 |
| 1963-09-02 | vs PHI | 138 | L 4-9 | 73-62 | 3 | 13,654 | Tony Cloninger | Cal McLish | Cal McLish | Tony Cloninger | | 593 | 510 | 83 |
| 1963-09-03 | vs PHI | 139 | L 0-2 | 73-63 | 4 | 4,949 | Denny Lemaster | Ray Culp | Ray Culp | Denny Lemaster | | 593 | 512 | 81 |
| 1963-09-04 | vs PIT | 140 | W 1-0 | 74-63 | 4 | 6,219 | Warren Spahn | Bob Friend | Warren Spahn | Bob Friend | | 594 | 512 | 82 |
| 1963-09-05 | vs PIT | 141 | W 8-0 | 75-63 | 3 | 4,699 | Bob Sadowski | Tom Parsons | Bob Sadowski | Tom Parsons | | 602 | 512 | 90 |
| 1963-09-06 | @ PHI | 142 | W 5-0 | 76-63 | 3 | 10,767 | Bob Shaw | Cal McLish | Bob Shaw | Cal McLish | | 607 | 512 | 95 |
| 1963-09-07 | @ PHI | 143 | W 6-4 | 77-63 | 3 | 11,589 | Denny Lemaster | Ray Culp | Bobby Tiefenauer | Jack Baldschun | | 613 | 516 | 97 |
| 1963-09-08 | @ PHI | 144 | W 3-2 | 78-63 | 3 | 8,807 | Warren Spahn | Dallas Green | Warren Spahn | Dallas Green | | 616 | 518 | 98 |
| 1963-09-09 | @ CIN | 145 | W 9-2 | 80-63 | 3 | 0 | Bob Sadowski | Jim O'Toole | Bob Sadowski | Jim O'Toole | | 625 | 520 | 105 |
| 1963-09-09 | @ CIN | 146 | W 7-4 | 80-63 | 3 | 5,939 | Bob Hendley | Joey Jay | Bob Hendley | Joey Jay | | 632 | 524 | 108 |
| 1963-09-10 | @ CIN | 147 | L 3-4 | 80-64 | 3 | 3,759 | Bob Shaw | John Tsitouris | John Tsitouris | Bob Shaw | Bill Henry | 635 | 528 | 107 |
| 1963-09-11 | @ CIN | 148 | L 3-14 | 80-65 | 3 | 4,442 | Denny Lemaster | Jim Maloney | Jim Maloney | Denny Lemaster | | 638 | 542 | 96 |
| 1963-09-13 | @ SLN | 149 | L 0-7 | 80-66 | 3 | 23,625 | Warren Spahn | Curt Simmons | Curt Simmons | Warren Spahn | | 638 | 549 | 89 |
| 1963-09-14 | @ SLN | 150 | L 2-3 | 80-67 | 3 | 22,630 | Bob Sadowski | Bob Gibson | Bob Gibson | Bob Sadowski | Ron Taylor | 640 | 552 | 88 |
| 1963-09-15 | @ SLN | 151 | L 2-3 | 80-69 | 4 | 0 | Bob Hendley | Lew Burdette | Lew Burdette | Bob Hendley | | 642 | 555 | 87 |
| 1963-09-15 | @ SLN | 152 | L 0-5 | 80-69 | 4 | 30,308 | Denny Lemaster | Ray Sadecki | Ray Sadecki | Denny Lemaster | | 642 | 560 | 82 |
| 1963-09-16 | vs SFN | 153 | L 3-4 | 80-70 | 4 | 5,437 | Tony Cloninger | Juan Marichal | Juan Marichal | Tony Cloninger | | 645 | 564 | 81 |
| 1963-09-17 | vs SFN | 154 | L 3-11 | 80-71 | 4 | 33,676 | Warren Spahn | Bobby Bolin | Bobby Bolin | Warren Spahn | | 648 | 575 | 73 |
| 1963-09-18 | vs SFN | 155 | W 6-4 | 81-71 | 4 | 3,865 | Bob Sadowski | Jack Sanford | Bob Shaw | Billy O'Dell | | 654 | 579 | 75 |
| 1963-09-20 | @ CHN | 156 | L 0-1 | 81-72 | 4 | 1,004 | Denny Lemaster | Dick Ellsworth | Dick Ellsworth | Denny Lemaster | | 654 | 580 | 74 |
| 1963-09-21 | @ CHN | 157 | W 4-0 | 82-72 | 4 | 7,847 | Warren Spahn | Larry Jackson | Warren Spahn | Larry Jackson | | 658 | 580 | 78 |
| 1963-09-22 | @ CHN | 158 | L 3-7 | 82-73 | 4 | 8,866 | Bob Sadowski | Bob Buhl | Bob Buhl | Bob Sadowski | | 661 | 587 | 74 |
| 1963-09-24 | vs CIN | 159 | L 2-4 | 82-74 | 6 | 4,744 | Denny Lemaster | Jim Maloney | Jim Maloney | Denny Lemaster | Bill Henry | 663 | 591 | 72 |
| 1963-09-25 | vs CIN | 160 | W 9-5 | 83-74 | 5 | 5,596 | Warren Spahn | Jim O'Toole | Warren Spahn | Jim O'Toole | | 672 | 596 | 76 |
| 1963-09-27 | vs CHN | 161 | L 2-3 | 83-75 | 6 | 10,088 | Bob Sadowski | Cal Koonce | Cal Koonce | Tony Cloninger | Lindy McDaniel | 674 | 599 | 75 |
| 1963-09-28 | vs CHN | 162 | L 1-4 | 83-76 | 6 | 8,289 | Denny Lemaster | Dick Ellsworth | Dick Ellsworth | Denny Lemaster | | 675 | 603 | 72 |
| 1963-09-29 | vs CHN | 163 | W 2-0 | 84-76 | 6 | 14,490 | Warren Spahn | Bob Buhl | Warren Spahn | Bob Buhl | | 677 | 603 | 74 |