| 1975-04-07 | @ HOU | 1 | L 2-6 | 0-1 | 3 | 14,959 | Phil Niekro | Larry Dierker | Larry Dierker | Phil Niekro | | 2 | 6 | -4 |
| 1975-04-08 | @ HOU | 2 | W 2-0 | 1-1 | 2 | 7,937 | Carl Morton | Doug Konieczny | Carl Morton | Doug Konieczny | | 4 | 6 | -2 |
| 1975-04-09 | @ HOU | 3 | L 2-14 | 1-2 | 3 | 13,257 | Ron Reed | J.R. Richard | Dave Roberts | Ron Reed | | 6 | 20 | -14 |
| 1975-04-11 | @ SFN | 4 | W 4-2 | 2-2 | 2 | 17,649 | Buzz Capra | Mike Caldwell | Buzz Capra | Mike Caldwell | | 10 | 22 | -12 |
| 1975-04-12 | @ SFN | 5 | W 7-4 | 3-2 | 2 | 4,863 | Carl Morton | John D'Acquisto | Carl Morton | John D'Acquisto | | 17 | 26 | -9 |
| 1975-04-13 | @ SFN | 6 | L 0-5 | 3-4 | 5 | 0 | Ron Reed | John Montefusco | John Montefusco | Ron Reed | | 17 | 31 | -14 |
| 1975-04-13 | @ SFN | 7 | L 2-4 | 3-4 | 5 | 10,527 | Gary Gentry | Pete Falcone | Pete Falcone | Tom House | Randy Moffitt | 19 | 35 | -16 |
| 1975-04-15 | vs HOU | 8 | W 6-1 | 4-4 | 2 | 12,774 | Phil Niekro | J.R. Richard | Phil Niekro | J.R. Richard | | 25 | 36 | -11 |
| 1975-04-16 | vs HOU | 9 | W 5-2 | 5-4 | 2 | 3,401 | Buzz Capra | Larry Dierker | Buzz Capra | Larry Dierker | | 30 | 38 | -8 |
| 1975-04-17 | vs HOU | 10 | W 2-1 | 6-4 | 1 | 3,123 | Carl Morton | Dave Roberts | Carl Morton | Dave Roberts | | 32 | 39 | -7 |
| 1975-04-18 | vs SDN | 11 | L 1-3 | 6-5 | 3 | 5,954 | Ron Reed | Joe McIntosh | Joe McIntosh | Ron Reed | Dave Tomlin | 33 | 42 | -9 |
| 1975-04-19 | vs SDN | 12 | L 2-8 | 6-6 | 3 | 4,714 | Gary Gentry | Dave Freisleben | Dave Freisleben | Gary Gentry | | 35 | 50 | -15 |
| 1975-04-20 | vs SDN | 13 | W 4-3 | 7-6 | 3 | 7,204 | Phil Niekro | Sonny Siebert | Tom House | Rich Folkers | | 39 | 53 | -14 |
| 1975-04-21 | vs LAN | 14 | L 1-2 | 7-7 | 4 | 9,256 | Buzz Capra | Andy Messersmith | Andy Messersmith | Buzz Capra | | 40 | 55 | -15 |
| 1975-04-22 | vs LAN | 15 | W 3-2 | 8-7 | 3 | 5,049 | Carl Morton | Doug Rau | Carl Morton | Charlie Hough | Roric Harrison | 43 | 57 | -14 |
| 1975-04-23 | vs CIN | 16 | W 5-4 | 9-7 | 2 | 7,234 | Ron Reed | Don Gullett | Ron Reed | Don Gullett | | 48 | 61 | -13 |
| 1975-04-24 | vs CIN | 17 | L 3-11 | 9-8 | 3 | 8,266 | Phil Niekro | Jack Billingham | Jack Billingham | Phil Niekro | | 51 | 72 | -21 |
| 1975-04-25 | @ SDN | 18 | L 3-5 | 9-9 | 4 | 11,033 | Buzz Capra | Sonny Siebert | Sonny Siebert | Buzz Capra | Bill Greif | 54 | 77 | -23 |
| 1975-04-26 | @ SDN | 19 | W 6-4 | 10-9 | 3 | 38,189 | Carl Morton | Randy Jones | Carl Morton | Randy Jones | Tom House | 60 | 81 | -21 |
| 1975-04-27 | @ SDN | 20 | W 12-8 | 12-9 | 2 | 0 | Ron Reed | Dan Spillner | Ron Reed | Rich Folkers | | 72 | 89 | -17 |
| 1975-04-27 | @ SDN | 21 | W 4-1 | 12-9 | 2 | 25,996 | Roric Harrison | Alan Foster | Roric Harrison | Alan Foster | | 76 | 90 | -14 |
| 1975-04-28 | @ LAN | 22 | L 3-4 | 12-10 | 2 | 32,097 | Phil Niekro | Rick Rhoden | Jim Brewer | Tom House | | 79 | 94 | -15 |
| 1975-04-29 | @ LAN | 23 | L 0-8 | 12-11 | 2 | 31,638 | Buzz Capra | Andy Messersmith | Andy Messersmith | Buzz Capra | | 79 | 102 | -23 |
| 1975-04-30 | @ LAN | 24 | L 2-5 | 12-12 | 4 | 29,640 | Carl Morton | Doug Rau | Doug Rau | Carl Morton | | 81 | 107 | -26 |
| 1975-05-02 | @ CIN | 25 | W 6-5 | 13-12 | 2 | 21,061 | Ron Reed | Fred Norman | Gary Gentry | Clay Kirby | Tom House | 87 | 112 | -25 |
| 1975-05-03 | @ CIN | 26 | L 1-6 | 13-13 | 3 | 27,091 | Roric Harrison | Gary Nolan | Gary Nolan | Roric Harrison | | 88 | 118 | -30 |
| 1975-05-04 | @ CIN | 27 | L 2-3 | 13-14 | 5 | 51,030 | Phil Niekro | Don Gullett | Don Gullett | Phil Niekro | Pedro Borbon | 90 | 121 | -31 |
| 1975-05-06 | vs SFN | 28 | L 1-7 | 13-15 | 5 | 5,102 | Buzz Capra | Pete Falcone | Pete Falcone | Buzz Capra | | 91 | 128 | -37 |
| 1975-05-07 | vs SFN | 29 | L 2-6 | 13-16 | 5 | 2,687 | Carl Morton | Jim Barr | Jim Barr | Carl Morton | | 93 | 134 | -41 |
| 1975-05-08 | vs SFN | 30 | W 3-2 | 14-16 | 5 | 3,656 | Ron Reed | Mike Caldwell | Ron Reed | Mike Caldwell | Tom House | 96 | 136 | -40 |
| 1975-05-09 | vs PHI | 31 | W 3-1 | 15-16 | 4 | 7,444 | Roric Harrison | Tom Underwood | Roric Harrison | Tom Underwood | | 99 | 137 | -38 |
| 1975-05-10 | vs PHI | 32 | W 2-1 | 16-16 | 3 | 6,510 | Phil Niekro | Steve Carlton | Phil Niekro | Gene Garber | | 101 | 138 | -37 |
| 1975-05-11 | vs PHI | 33 | W 7-3 | 17-16 | 3 | 6,456 | Buzz Capra | Wayne Twitchell | Buzz Capra | Wayne Twitchell | | 108 | 141 | -33 |
| 1975-05-12 | @ MON | 34 | L 1-11 | 17-17 | 3 | 7,432 | Carl Morton | Steve Rogers | Steve Rogers | Carl Morton | | 109 | 152 | -43 |
| 1975-05-13 | @ MON | 35 | W 9-4 | 18-17 | 3 | 8,162 | Ron Reed | Dave McNally | Ron Reed | Dave McNally | | 118 | 156 | -38 |
| 1975-05-14 | @ MON | 36 | L 4-5 | 18-18 | 3 | 8,227 | Roric Harrison | Woodie Fryman | Woodie Fryman | Roric Harrison | John Montague | 122 | 161 | -39 |
| 1975-05-15 | @ MON | 37 | W 5-4 | 19-18 | 2 | 0 | Phil Niekro | Steve Renko | Phil Niekro | Steve Renko | Max Leon | 127 | 165 | -38 |
| 1975-05-16 | @ PHI | 38 | L 8-12 | 19-19 | 2 | 18,710 | Buzz Capra | Larry Christenson | Gene Garber | Buzz Capra | | 135 | 177 | -42 |
| 1975-05-17 | @ PHI | 39 | L 8-9 | 19-20 | 3 | 30,369 | Carl Morton | Ron Schueler | Gene Garber | Phil Niekro | | 143 | 186 | -43 |
| 1975-05-18 | @ PHI | 40 | L 1-5 | 19-21 | 3 | 25,905 | Ron Reed | Tom Underwood | Tom Underwood | Ron Reed | | 144 | 191 | -47 |
| 1975-05-20 | vs MON | 41 | W 9-4 | 20-21 | 4 | 3,681 | Roric Harrison | Woodie Fryman | Roric Harrison | Woodie Fryman | Max Leon | 153 | 195 | -42 |
| 1975-05-21 | vs MON | 42 | W 6-3 | 21-21 | 4 | 3,263 | Phil Niekro | Steve Renko | Phil Niekro | Steve Renko | | 159 | 198 | -39 |
| 1975-05-23 | vs NYN | 43 | L 1-3 | 21-22 | 5 | 10,144 | Carl Morton | Jon Matlack | Jon Matlack | Carl Morton | Bob Apodaca | 160 | 201 | -41 |
| 1975-05-24 | vs NYN | 44 | L 1-5 | 21-23 | 5 | 13,407 | Ron Reed | Randy Tate | Randy Tate | Ron Reed | Bob Apodaca | 161 | 206 | -45 |
| 1975-05-25 | vs NYN | 45 | W 6-3 | 22-23 | 5 | 8,537 | Buzz Capra | Jerry Koosman | Buzz Capra | Jerry Koosman | Tom House | 167 | 209 | -42 |
| 1975-05-26 | @ CHN | 46 | L 0-6 | 22-24 | 5 | 18,993 | Roric Harrison | Ray Burris | Ray Burris | Roric Harrison | | 167 | 215 | -48 |
| 1975-05-27 | @ CHN | 47 | W 7-2 | 23-24 | 5 | 10,731 | Phil Niekro | Rick Reuschel | Phil Niekro | Rick Reuschel | | 174 | 217 | -43 |
| 1975-05-28 | @ CHN | 48 | L 4-5 | 23-25 | 5 | 10,085 | Carl Morton | Bill Bonham | Oscar Zamora | Carl Morton | | 178 | 222 | -44 |
| 1975-05-30 | @ PIT | 49 | L 1-2 | 23-26 | 5 | 11,565 | Buzz Capra | Jerry Reuss | Jerry Reuss | Buzz Capra | | 179 | 224 | -45 |
| 1975-05-31 | @ PIT | 50 | L 4-11 | 23-27 | 5 | 13,423 | Roric Harrison | Bruce Kison | Bruce Kison | Roric Harrison | | 183 | 235 | -52 |
| 1975-06-01 | @ PIT | 51 | W 5-2 | 24-27 | 5 | 37,373 | Phil Niekro | Jim Rooker | Phil Niekro | Jim Rooker | | 188 | 237 | -49 |
| 1975-06-02 | @ SLN | 52 | L 0-1 | 24-28 | 5 | 12,001 | Carl Morton | Lynn McGlothen | Lynn McGlothen | Carl Morton | | 188 | 238 | -50 |
| 1975-06-03 | @ SLN | 53 | L 2-4 | 24-29 | 5 | 13,356 | Buzz Capra | Ron Reed | Ron Reed | Buzz Capra | Al Hrabosky | 190 | 242 | -52 |
| 1975-06-04 | @ SLN | 54 | L 2-5 | 24-30 | 5 | 12,570 | Ray Sadecki | John Curtis | John Curtis | Ray Sadecki | Al Hrabosky | 192 | 247 | -55 |
| 1975-06-06 | @ NYN | 55 | W 4-1 | 25-30 | 5 | 15,978 | Phil Niekro | Randy Tate | Phil Niekro | Randy Tate | | 196 | 248 | -52 |
| 1975-06-07 | @ NYN | 56 | W 7-3 | 26-30 | 5 | 50,048 | Carl Morton | Jon Matlack | Carl Morton | Jon Matlack | Tom House | 203 | 251 | -48 |
| 1975-06-08 | @ NYN | 57 | L 6-7 | 26-31 | 5 | 24,928 | Buzz Capra | Tom Hall | Hank Webb | Elias Sosa | | 209 | 258 | -49 |
| 1975-06-09 | vs SLN | 58 | L 4-5 | 26-32 | 5 | 9,620 | Blue Moon Odom | John Curtis | John Curtis | Blue Moon Odom | Al Hrabosky | 213 | 263 | -50 |
| 1975-06-12 | vs CHN | 59 | W 5-4 | 28-32 | 5 | 0 | Phil Niekro | Ray Burris | Tom House | Ken Frailing | | 218 | 267 | -49 |
| 1975-06-12 | vs CHN | 60 | W 6-2 | 28-32 | 5 | 5,360 | Carl Morton | Geoff Zahn | Carl Morton | Geoff Zahn | | 224 | 269 | -45 |
| 1975-06-13 | vs PIT | 61 | L 3-8 | 28-33 | 5 | 8,998 | Blue Moon Odom | Jim Rooker | Jim Rooker | Blue Moon Odom | | 227 | 277 | -50 |
| 1975-06-14 | vs PIT | 62 | L 1-2 | 28-34 | 5 | 29,308 | Mike Thompson | Jerry Reuss | Jerry Reuss | Mike Thompson | Dave Giusti | 228 | 279 | -51 |
| 1975-06-15 | vs PIT | 63 | L 6-8 | 28-35 | 5 | 8,352 | Ray Sadecki | John Candelaria | Larry Demery | Elias Sosa | | 234 | 287 | -53 |
| 1975-06-16 | @ CIN | 64 | L 2-9 | 28-36 | 5 | 20,642 | Phil Niekro | Don Gullett | Don Gullett | Phil Niekro | | 236 | 296 | -60 |
| 1975-06-17 | @ CIN | 65 | W 5-1 | 29-36 | 5 | 22,133 | Carl Morton | Gary Nolan | Carl Morton | Gary Nolan | | 241 | 297 | -56 |
| 1975-06-18 | @ CIN | 66 | L 1-6 | 29-37 | 5 | 30,333 | Blue Moon Odom | Jack Billingham | Jack Billingham | Blue Moon Odom | Will McEnaney | 242 | 303 | -61 |
| 1975-06-20 | vs SFN | 67 | W 4-2 | 30-37 | 5 | 4,373 | Phil Niekro | Jim Barr | Phil Niekro | Jim Barr | Tom House | 246 | 305 | -59 |
| 1975-06-21 | vs SFN | 68 | L 3-4 | 30-38 | 5 | 10,084 | Carl Morton | Mike Caldwell | Mike Caldwell | Carl Morton | Randy Moffitt | 249 | 309 | -60 |
| 1975-06-22 | vs SFN | 69 | W 8-2 | 31-39 | 5 | 0 | Mike Thompson | Ed Halicki | Mike Beard | Ed Halicki | | 257 | 311 | -54 |
| 1975-06-22 | vs SFN | 70 | L 2-5 | 31-39 | 5 | 12,410 | Blue Moon Odom | Pete Falcone | Pete Falcone | Blue Moon Odom | Gary Lavelle | 259 | 316 | -57 |
| 1975-06-23 | vs CIN | 71 | L 4-8 | 31-40 | 5 | 8,537 | Jamie Easterly | Jack Billingham | Jack Billingham | Jamie Easterly | | 263 | 324 | -61 |
| 1975-06-24 | vs CIN | 72 | L 0-3 | 31-41 | 5 | 9,148 | Phil Niekro | Pat Darcy | Pat Darcy | Phil Niekro | Pedro Borbon | 263 | 327 | -64 |
| 1975-06-25 | vs CIN | 73 | L 0-2 | 31-42 | 5 | 8,117 | Carl Morton | Tom Carroll | Tom Carroll | Carl Morton | Will McEnaney | 263 | 329 | -66 |
| 1975-06-26 | @ HOU | 74 | L 4-8 | 31-43 | 5 | 7,017 | Mike Thompson | J.R. Richard | J.R. Richard | Mike Thompson | | 267 | 337 | -70 |
| 1975-06-27 | @ HOU | 75 | W 7-4 | 32-43 | 5 | 10,222 | Jamie Easterly | Larry Dierker | Jamie Easterly | Larry Dierker | Max Leon | 274 | 341 | -67 |
| 1975-06-28 | @ HOU | 76 | W 6-3 | 33-43 | 5 | 10,999 | Phil Niekro | Dave Roberts | Mike Beard | Dave Roberts | Tom House | 280 | 344 | -64 |
| 1975-06-29 | @ HOU | 77 | W 3-1 | 34-43 | 5 | 10,576 | Carl Morton | Ken Forsch | Carl Morton | Ken Forsch | Max Leon | 283 | 345 | -62 |
| 1975-07-01 | @ SFN | 78 | L 1-9 | 34-44 | 5 | 2,796 | Jamie Easterly | Mike Caldwell | Mike Caldwell | Jamie Easterly | | 284 | 354 | -70 |
| 1975-07-02 | @ SFN | 79 | W 6-0 | 35-44 | 5 | 5,253 | Phil Niekro | Ed Halicki | Phil Niekro | Ed Halicki | | 290 | 354 | -64 |
| 1975-07-04 | vs HOU | 80 | W 5-4 | 36-44 | 5 | 29,487 | Carl Morton | Dave Roberts | Carl Morton | Wayne Granger | | 295 | 358 | -63 |
| 1975-07-05 | vs HOU | 81 | W 4-3 | 38-44 | 4 | 0 | Ray Sadecki | Ken Forsch | Ray Sadecki | Ken Forsch | Elias Sosa | 299 | 361 | -62 |
| 1975-07-05 | vs HOU | 82 | W 8-4 | 38-44 | 4 | 11,202 | Max Leon | Doug Konieczny | Max Leon | Doug Konieczny | Tom House | 307 | 365 | -58 |
| 1975-07-06 | vs HOU | 83 | L 2-6 | 38-45 | 4 | 3,728 | Phil Niekro | J.R. Richard | J.R. Richard | Phil Niekro | Jim Crawford | 309 | 371 | -62 |
| 1975-07-07 | vs NYN | 84 | L 1-3 | 38-46 | 5 | 4,510 | Jamie Easterly | Hank Webb | Hank Webb | Jamie Easterly | | 310 | 374 | -64 |
| 1975-07-08 | vs NYN | 85 | L 3-4 | 38-47 | 5 | 4,942 | Carl Morton | Jerry Koosman | Jerry Koosman | Carl Morton | Ken Sanders | 313 | 378 | -65 |
| 1975-07-09 | vs NYN | 86 | L 1-2 | 38-48 | 5 | 6,515 | Bruce Dal Canton | Tom Seaver | Tom Seaver | Max Leon | | 314 | 380 | -66 |
| 1975-07-11 | vs MON | 87 | W 2-1 | 39-48 | 5 | 5,010 | Phil Niekro | Dan Warthen | Tom House | Dale Murray | | 316 | 381 | -65 |
| 1975-07-12 | vs MON | 88 | W 9-4 | 40-49 | 4 | 0 | Carl Morton | Fred Scherman | Carl Morton | Fred Scherman | | 325 | 385 | -60 |
| 1975-07-12 | vs MON | 89 | L 3-7 | 40-49 | 4 | 25,246 | Jamie Easterly | Woodie Fryman | Woodie Fryman | Jamie Easterly | | 328 | 392 | -64 |
| 1975-07-13 | vs MON | 90 | W 5-4 | 41-49 | 4 | 4,908 | Bruce Dal Canton | Steve Rogers | Ray Sadecki | Don DeMola | | 333 | 396 | -63 |
| 1975-07-17 | @ NYN | 91 | L 3-4 | 41-50 | 4 | 16,010 | Phil Niekro | Jerry Koosman | Rick Baldwin | Tom House | | 336 | 400 | -64 |
| 1975-07-18 | @ NYN | 92 | W 4-3 | 42-50 | 4 | 23,262 | Carl Morton | Jon Matlack | Carl Morton | Jon Matlack | Max Leon | 340 | 403 | -63 |
| 1975-07-19 | @ NYN | 93 | L 4-5 | 42-51 | 5 | 22,551 | Bruce Dal Canton | Tom Seaver | Tom Seaver | Bruce Dal Canton | | 344 | 408 | -64 |
| 1975-07-20 | @ MON | 94 | L 5-6 | 42-52 | 5 | 16,056 | Ray Sadecki | Woodie Fryman | Fred Scherman | Tom House | | 349 | 414 | -65 |
| 1975-07-21 | @ MON | 95 | W 4-1 | 43-52 | 4 | 15,127 | Mike Thompson | Dan Warthen | Mike Beard | Dan Warthen | Elias Sosa | 353 | 415 | -62 |
| 1975-07-22 | @ PHI | 96 | L 0-1 | 43-53 | 5 | 20,052 | Carl Morton | Steve Carlton | Steve Carlton | Carl Morton | | 353 | 416 | -63 |
| 1975-07-23 | @ PHI | 97 | L 2-3 | 43-54 | 5 | 28,268 | Bruce Dal Canton | Jim Lonborg | Jim Lonborg | Bruce Dal Canton | | 355 | 419 | -64 |
| 1975-07-24 | @ PHI | 98 | W 5-4 | 44-54 | 4 | 21,706 | Phil Niekro | Larry Christenson | Phil Niekro | Larry Christenson | | 360 | 423 | -63 |
| 1975-07-25 | vs SDN | 99 | L 3-7 | 44-56 | 5 | 0 | Ray Sadecki | Joe McIntosh | Joe McIntosh | Ray Sadecki | Bill Greif | 363 | 430 | -67 |
| 1975-07-25 | vs SDN | 100 | L 1-8 | 44-56 | 5 | 9,860 | Mike Thompson | Dan Spillner | Dan Spillner | Mike Thompson | | 364 | 438 | -74 |
| 1975-07-26 | vs SDN | 101 | L 2-4 | 44-57 | 5 | 12,225 | Carl Morton | Jerry Johnson | Jerry Johnson | Carl Morton | Danny Frisella | 366 | 442 | -76 |
| 1975-07-27 | vs SDN | 102 | L 1-3 | 44-58 | 5 | 4,496 | Bruce Dal Canton | Randy Jones | Randy Jones | Bruce Dal Canton | | 367 | 445 | -78 |
| 1975-07-28 | vs LAN | 103 | W 5-3 | 45-58 | 5 | 6,328 | Phil Niekro | Burt Hooton | Phil Niekro | Mike Marshall | | 372 | 448 | -76 |
| 1975-07-29 | vs LAN | 104 | W 4-2 | 46-58 | 5 | 4,906 | Blue Moon Odom | Andy Messersmith | Blue Moon Odom | Andy Messersmith | Tom House | 376 | 450 | -74 |
| 1975-07-30 | vs LAN | 105 | L 2-8 | 46-59 | 5 | 3,954 | Carl Morton | Doug Rau | Doug Rau | Carl Morton | Mike Marshall | 378 | 458 | -80 |
| 1975-07-31 | vs LAN | 106 | W 11-10 | 47-59 | 5 | 3,934 | Bruce Dal Canton | Al Downing | Tom House | Mike Marshall | | 389 | 468 | -79 |
| 1975-08-01 | @ SDN | 107 | L 0-4 | 47-60 | 5 | 11,348 | Phil Niekro | Randy Jones | Randy Jones | Phil Niekro | | 389 | 472 | -83 |
| 1975-08-02 | @ SDN | 108 | W 8-6 | 48-60 | 5 | 26,892 | Blue Moon Odom | Dave Freisleben | Mike Beard | Joe McIntosh | | 397 | 478 | -81 |
| 1975-08-03 | @ SDN | 109 | W 5-1 | 49-60 | 5 | 8,850 | Carl Morton | Dan Spillner | Carl Morton | Dan Spillner | | 402 | 479 | -77 |
| 1975-08-04 | @ LAN | 110 | L 1-9 | 49-61 | 5 | 25,036 | Bruce Dal Canton | Burt Hooton | Burt Hooton | Bruce Dal Canton | | 403 | 488 | -85 |
| 1975-08-05 | @ LAN | 111 | L 0-5 | 49-62 | 5 | 24,452 | Phil Niekro | Don Sutton | Don Sutton | Phil Niekro | | 403 | 493 | -90 |
| 1975-08-06 | @ LAN | 112 | W 5-4 | 50-62 | 5 | 23,779 | Blue Moon Odom | Andy Messersmith | Tom House | Andy Messersmith | Max Leon | 408 | 497 | -89 |
| 1975-08-08 | vs CHN | 113 | W 1-0 | 51-63 | 5 | 0 | Carl Morton | Tom Dettore | Carl Morton | Tom Dettore | | 409 | 497 | -88 |
| 1975-08-08 | vs CHN | 114 | L 1-3 | 51-63 | 5 | 8,368 | Bruce Dal Canton | Ray Burris | Ray Burris | Bruce Dal Canton | Darold Knowles | 410 | 500 | -90 |
| 1975-08-09 | vs CHN | 115 | L 2-8 | 51-64 | 5 | 22,605 | Phil Niekro | Steve Stone | Steve Stone | Phil Niekro | | 412 | 508 | -96 |
| 1975-08-10 | vs CHN | 116 | L 1-9 | 51-65 | 5 | 4,251 | Blue Moon Odom | Bill Bonham | Bill Bonham | Blue Moon Odom | | 413 | 517 | -104 |
| 1975-08-11 | vs PIT | 117 | L 1-8 | 51-66 | 5 | 4,701 | Jamie Easterly | John Candelaria | John Candelaria | Jamie Easterly | Kent Tekulve | 414 | 525 | -111 |
| 1975-08-12 | vs PIT | 118 | W 3-2 | 52-66 | 5 | 4,506 | Carl Morton | Bruce Kison | Carl Morton | Bruce Kison | Tom House | 417 | 527 | -110 |
| 1975-08-13 | vs PIT | 119 | W 4-3 | 53-66 | 5 | 4,163 | Bruce Dal Canton | Dock Ellis | Tom House | Ken Brett | | 421 | 530 | -109 |
| 1975-08-14 | vs SLN | 120 | W 6-4 | 54-66 | 5 | 4,188 | Phil Niekro | Lynn McGlothen | Phil Niekro | Lynn McGlothen | Ray Sadecki | 427 | 534 | -107 |
| 1975-08-15 | vs SLN | 121 | L 1-4 | 54-68 | 5 | 0 | Jamie Easterly | Ron Reed | Ron Reed | Jamie Easterly | | 428 | 538 | -110 |
| 1975-08-15 | vs SLN | 122 | L 1-2 | 54-68 | 5 | 8,771 | Mike Thompson | Eric Rasmussen | Eric Rasmussen | Mike Thompson | Al Hrabosky | 429 | 540 | -111 |
| 1975-08-16 | vs SLN | 123 | W 8-7 | 55-68 | 5 | 16,255 | Carl Morton | John Curtis | Tom House | Bob Gibson | | 437 | 547 | -110 |
| 1975-08-17 | vs SLN | 124 | L 1-8 | 55-69 | 5 | 8,907 | Blue Moon Odom | John Denny | John Denny | Blue Moon Odom | | 438 | 555 | -117 |
| 1975-08-18 | vs PHI | 125 | L 3-6 | 55-70 | 5 | 4,320 | Phil Niekro | Steve Carlton | Tom Hilgendorf | Phil Niekro | | 441 | 561 | -120 |
| 1975-08-19 | vs PHI | 126 | W 6-4 | 56-70 | 5 | 4,470 | Mike Thompson | Dick Ruthven | Max Leon | Gene Garber | | 447 | 565 | -118 |
| 1975-08-20 | vs PHI | 127 | L 1-4 | 56-71 | 5 | 4,704 | Carl Morton | Larry Christenson | Larry Christenson | Carl Morton | Tug McGraw | 448 | 569 | -121 |
| 1975-08-22 | @ SLN | 128 | W 9-5 | 57-71 | 5 | 23,769 | Jamie Easterly | Eric Rasmussen | Elias Sosa | Harry Parker | Tom House | 457 | 574 | -117 |
| 1975-08-23 | @ SLN | 129 | L 2-7 | 57-72 | 5 | 30,930 | Phil Niekro | John Denny | John Denny | Phil Niekro | | 459 | 581 | -122 |
| 1975-08-24 | @ SLN | 130 | L 2-6 | 57-73 | 5 | 24,786 | Carl Morton | Bob Forsch | Bob Forsch | Carl Morton | Al Hrabosky | 461 | 587 | -126 |
| 1975-08-25 | @ PIT | 131 | L 0-4 | 57-74 | 5 | 11,146 | Mike Thompson | Jim Rooker | Jim Rooker | Mike Thompson | | 461 | 591 | -130 |
| 1975-08-26 | @ PIT | 132 | L 2-8 | 57-75 | 5 | 12,213 | Jamie Easterly | Larry Demery | Larry Demery | Jamie Easterly | | 463 | 599 | -136 |
| 1975-08-27 | @ PIT | 133 | W 6-2 | 58-75 | 5 | 21,209 | Phil Niekro | John Candelaria | Phil Niekro | John Candelaria | | 469 | 601 | -132 |
| 1975-08-29 | @ CHN | 134 | L 3-8 | 58-76 | 5 | 4,151 | Carl Morton | Ray Burris | Ray Burris | Carl Morton | | 472 | 609 | -137 |
| 1975-08-31 | @ CHN | 135 | W 3-1 | 59-77 | 5 | 0 | Phil Niekro | Rick Reuschel | Phil Niekro | Rick Reuschel | | 475 | 610 | -135 |
| 1975-08-31 | @ CHN | 136 | L 8-9 | 59-77 | 5 | 12,346 | Mike Thompson | Steve Stone | Tom Dettore | Ray Sadecki | | 483 | 619 | -136 |
| 1975-09-01 | @ HOU | 137 | L 3-5 | 59-78 | 5 | 6,329 | Jamie Easterly | Doug Konieczny | Doug Konieczny | Jamie Easterly | Joe Niekro | 486 | 624 | -138 |
| 1975-09-02 | @ HOU | 138 | W 4-1 | 60-78 | 5 | 4,019 | Carl Morton | Jim York | Carl Morton | Jim York | Bruce Dal Canton | 490 | 625 | -135 |
| 1975-09-03 | vs SDN | 139 | L 9-10 | 60-79 | 5 | 1,119 | Adrian Devine | Joe McIntosh | Jerry Johnson | Tom House | Bill Greif | 499 | 635 | -136 |
| 1975-09-04 | vs SDN | 140 | W 2-1 | 61-79 | 5 | 1,062 | Phil Niekro | Rich Folkers | Bruce Dal Canton | Danny Frisella | | 501 | 636 | -135 |
| 1975-09-05 | vs LAN | 141 | L 2-5 | 61-80 | 5 | 2,725 | Mike Thompson | Burt Hooton | Burt Hooton | Mike Thompson | | 503 | 641 | -138 |
| 1975-09-06 | vs LAN | 142 | W 3-2 | 62-80 | 5 | 7,357 | Carl Morton | Rick Rhoden | Carl Morton | Charlie Hough | Bruce Dal Canton | 506 | 643 | -137 |
| 1975-09-07 | vs LAN | 143 | W 5-4 | 63-80 | 5 | 3,439 | Jamie Easterly | Don Sutton | Bruce Dal Canton | Charlie Hough | | 511 | 647 | -136 |
| 1975-09-08 | vs HOU | 144 | L 6-9 | 63-81 | 5 | 737 | Phil Niekro | J.R. Richard | Jose Sosa | Frank LaCorte | Mike Stanton | 517 | 656 | -139 |
| 1975-09-09 | vs HOU | 145 | W 4-1 | 64-81 | 5 | 2,074 | Adrian Devine | Larry Dierker | Adrian Devine | Larry Dierker | Bruce Dal Canton | 521 | 657 | -136 |
| 1975-09-10 | @ SDN | 146 | L 1-2 | 64-82 | 5 | 6,648 | Carl Morton | Randy Jones | Randy Jones | Bruce Dal Canton | | 522 | 659 | -137 |
| 1975-09-11 | @ SDN | 147 | L 3-4 | 64-83 | 5 | 3,712 | Mike Beard | Brent Strom | Brent Strom | Tom House | | 525 | 663 | -138 |
| 1975-09-12 | @ LAN | 148 | W 2-1 | 65-83 | 5 | 18,067 | Phil Niekro | Don Sutton | Phil Niekro | Don Sutton | | 527 | 664 | -137 |
| 1975-09-13 | @ LAN | 149 | L 0-6 | 65-84 | 5 | 17,929 | Frank LaCorte | Andy Messersmith | Andy Messersmith | Frank LaCorte | | 527 | 670 | -143 |
| 1975-09-14 | @ LAN | 150 | L 2-3 | 65-85 | 5 | 14,833 | Carl Morton | Doug Rau | Doug Rau | Carl Morton | Charlie Hough | 529 | 673 | -144 |
| 1975-09-15 | @ SFN | 151 | W 12-0 | 66-85 | 5 | 851 | Jamie Easterly | Pete Falcone | Jamie Easterly | Pete Falcone | | 541 | 673 | -132 |
| 1975-09-16 | @ SFN | 152 | L 6-7 | 66-86 | 5 | 1,089 | Mike Beard | John Montefusco | John D'Acquisto | Tom House | | 547 | 680 | -133 |
| 1975-09-17 | @ SFN | 153 | L 1-4 | 66-87 | 5 | 1,141 | Phil Niekro | Jim Barr | Jim Barr | Phil Niekro | | 548 | 684 | -136 |
| 1975-09-18 | vs CIN | 154 | L 3-4 | 66-88 | 5 | 3,123 | Carl Morton | Clay Kirby | Pedro Borbon | Pablo Torrealba | | 551 | 688 | -137 |
| 1975-09-19 | vs CIN | 155 | L 6-7 | 66-89 | 5 | 4,290 | Frank LaCorte | Pat Darcy | Pat Darcy | Frank LaCorte | Will McEnaney | 557 | 695 | -138 |
| 1975-09-20 | vs CIN | 156 | L 2-9 | 66-90 | 5 | 7,094 | Jamie Easterly | Gary Nolan | Gary Nolan | Jamie Easterly | | 559 | 704 | -145 |
| 1975-09-21 | vs CIN | 157 | L 0-3 | 66-91 | 5 | 6,858 | Phil Niekro | Don Gullett | Don Gullett | Phil Niekro | Rawly Eastwick | 559 | 707 | -148 |
| 1975-09-24 | vs SFN | 158 | W 7-6 | 67-91 | 5 | 1,045 | Carl Morton | Jim Barr | Elias Sosa | Jim Barr | | 566 | 713 | -147 |
| 1975-09-26 | @ CIN | 159 | L 5-12 | 67-92 | 5 | 18,720 | Phil Niekro | Gary Nolan | Gary Nolan | Phil Niekro | Pedro Borbon | 571 | 725 | -154 |
| 1975-09-27 | @ CIN | 160 | L 6-7 | 67-93 | 5 | 27,105 | Blue Moon Odom | Don Gullett | Don Gullett | Blue Moon Odom | Pat Darcy | 577 | 732 | -155 |
| 1975-09-28 | @ CIN | 161 | L 6-7 | 67-94 | 5 | 44,130 | Carl Morton | Fred Norman | Will McEnaney | Bruce Dal Canton | | 583 | 739 | -156 |