| 1977-04-08 | @ HOU | 1 | L 2-3 | 0-1 | 4 | 25,781 | Andy Messersmith | J.R. Richard | Ken Forsch | Bob Johnson | | 2 | 3 | -1 |
| 1977-04-09 | @ HOU | 2 | L 0-2 | 0-2 | 5 | 23,513 | Phil Niekro | Joaquin Andujar | Joaquin Andujar | Phil Niekro | | 2 | 5 | -3 |
| 1977-04-10 | @ HOU | 3 | W 6-0 | 1-2 | 5 | 9,332 | Dick Ruthven | Mark Lemongello | Dick Ruthven | Mark Lemongello | | 8 | 5 | 3 |
| 1977-04-11 | @ LAN | 4 | W 7-6 | 2-2 | 2 | 31,223 | Frank LaCorte | Tommy John | Frank LaCorte | Tommy John | Rick Camp | 15 | 11 | 4 |
| 1977-04-12 | @ LAN | 5 | L 10-14 | 2-3 | 4 | 37,732 | Andy Messersmith | Rick Rhoden | Rick Rhoden | Andy Messersmith | Charlie Hough | 25 | 25 | 0 |
| 1977-04-13 | @ LAN | 6 | L 3-4 | 2-4 | 5 | 36,547 | Phil Niekro | Don Sutton | Charlie Hough | Phil Niekro | | 28 | 29 | -1 |
| 1977-04-15 | vs HOU | 7 | W 4-3 | 3-4 | 3 | 46,469 | Dick Ruthven | Mark Lemongello | Dick Ruthven | Mark Lemongello | Rick Camp | 32 | 32 | 0 |
| 1977-04-16 | vs HOU | 8 | W 4-3 | 4-4 | 3 | 13,789 | Andy Messersmith | Doug Konieczny | Andy Messersmith | Joe Sambito | | 36 | 35 | 1 |
| 1977-04-17 | vs HOU | 9 | W 5-4 | 5-4 | 2 | 11,024 | Phil Niekro | J.R. Richard | Mike Marshall | Ken Forsch | Rick Camp | 41 | 39 | 2 |
| 1977-04-18 | vs SDN | 10 | L 6-12 | 5-5 | 3 | 3,933 | Frank LaCorte | Rick Sawyer | Rick Sawyer | Frank LaCorte | | 47 | 51 | -4 |
| 1977-04-19 | vs SDN | 11 | W 4-1 | 6-5 | 2 | 7,635 | Dick Ruthven | Dave Freisleben | Dick Ruthven | Dave Freisleben | | 51 | 52 | -1 |
| 1977-04-20 | vs SDN | 12 | W 2-0 | 7-5 | 2 | 8,176 | Andy Messersmith | Randy Jones | Andy Messersmith | Randy Jones | Rick Camp | 53 | 52 | 1 |
| 1977-04-22 | vs LAN | 13 | W 6-5 | 8-5 | 2 | 14,718 | Phil Niekro | Doug Rau | Rick Camp | Stan Wall | | 59 | 57 | 2 |
| 1977-04-23 | vs LAN | 14 | L 4-6 | 8-6 | 2 | 25,546 | Dick Ruthven | Burt Hooton | Charlie Hough | Dick Ruthven | | 63 | 63 | 0 |
| 1977-04-24 | vs LAN | 15 | L 6-16 | 8-7 | 2 | 22,464 | Frank LaCorte | Tommy John | Stan Wall | Frank LaCorte | | 69 | 79 | -10 |
| 1977-04-25 | vs CIN | 16 | L 9-23 | 8-8 | 2 | 11,242 | Phil Niekro | Jack Billingham | Jack Billingham | Phil Niekro | | 78 | 102 | -24 |
| 1977-04-26 | vs CIN | 17 | L 1-9 | 8-9 | 2 | 11,095 | Frank LaCorte | Fred Norman | Fred Norman | Frank LaCorte | Rawly Eastwick | 79 | 111 | -32 |
| 1977-04-27 | vs CIN | 18 | L 1-3 | 8-10 | 3 | 12,100 | Dick Ruthven | Pat Zachry | Pat Zachry | Dick Ruthven | | 80 | 114 | -34 |
| 1977-04-29 | @ SLN | 19 | L 2-5 | 8-11 | 5 | 17,658 | Phil Niekro | Bob Forsch | Bob Forsch | Phil Niekro | Al Hrabosky | 82 | 119 | -37 |
| 1977-04-30 | @ SLN | 20 | L 4-5 | 8-12 | 5 | 16,883 | Andy Messersmith | Pete Falcone | John Urrea | Rick Camp | | 86 | 124 | -38 |
| 1977-05-01 | @ SLN | 21 | L 0-8 | 8-13 | 5 | 12,781 | Dick Ruthven | Eric Rasmussen | Eric Rasmussen | Dick Ruthven | | 86 | 132 | -46 |
| 1977-05-02 | vs PIT | 22 | L 1-11 | 8-14 | 5 | 9,148 | Buzz Capra | Bruce Kison | Bruce Kison | Buzz Capra | | 87 | 143 | -56 |
| 1977-05-03 | vs PIT | 23 | L 7-8 | 8-15 | 5 | 7,977 | Phil Niekro | Jerry Reuss | Kent Tekulve | Phil Niekro | Grant Jackson | 94 | 151 | -57 |
| 1977-05-04 | vs PIT | 24 | L 0-8 | 8-16 | 6 | 3,890 | Frank LaCorte | Larry Demery | Larry Demery | Frank LaCorte | | 94 | 159 | -65 |
| 1977-05-06 | @ CHN | 25 | L 2-7 | 8-17 | 6 | 3,405 | Buzz Capra | Mike Krukow | Mike Krukow | Buzz Capra | Paul Reuschel | 96 | 166 | -70 |
| 1977-05-07 | @ CHN | 26 | L 4-11 | 8-18 | 6 | 22,877 | Phil Niekro | Ray Burris | Ray Burris | Phil Niekro | | 100 | 177 | -77 |
| 1977-05-08 | @ CHN | 27 | L 3-6 | 8-19 | 6 | 10,450 | Max Leon | Bill Bonham | Bill Bonham | Max Leon | Bruce Sutter | 103 | 183 | -80 |
| 1977-05-10 | @ PIT | 28 | L 0-3 | 8-21 | 6 | 0 | Buzz Capra | Jim Rooker | Jim Rooker | Buzz Capra | Kent Tekulve | 103 | 186 | -83 |
| 1977-05-10 | @ PIT | 29 | L 1-2 | 8-21 | 6 | 5,713 | Don Collins | Larry Demery | Larry Demery | Don Collins | Rich Gossage | 104 | 188 | -84 |
| 1977-05-11 | @ PIT | 30 | L 1-2 | 8-22 | 6 | 6,816 | Phil Niekro | John Candelaria | John Candelaria | Phil Niekro | Rich Gossage | 105 | 190 | -85 |
| 1977-05-12 | @ PIT | 31 | W 6-1 | 9-22 | 6 | 10,161 | Max Leon | Bruce Kison | Max Leon | Bruce Kison | | 111 | 191 | -80 |
| 1977-05-13 | vs SLN | 32 | L 0-3 | 9-23 | 6 | 19,866 | Jamie Easterly | Bob Forsch | Bob Forsch | Don Collins | Al Hrabosky | 111 | 194 | -83 |
| 1977-05-14 | vs SLN | 33 | L 6-7 | 9-24 | 6 | 10,479 | Buzz Capra | Pete Falcone | Clay Carroll | Buzz Capra | John Urrea | 117 | 201 | -84 |
| 1977-05-15 | vs SLN | 34 | W 15-12 | 10-24 | 6 | 36,693 | Phil Niekro | John Denny | Rick Camp | Al Hrabosky | Don Collins | 132 | 213 | -81 |
| 1977-05-17 | vs MON | 35 | W 9-6 | 11-24 | 6 | 8,611 | Max Leon | Dan Warthen | Phil Niekro | Bill Atkinson | | 141 | 219 | -78 |
| 1977-05-18 | vs MON | 36 | W 10-8 | 12-24 | 6 | 9,788 | Jamie Easterly | Steve Rogers | Jamie Easterly | Steve Rogers | Dave Campbell | 151 | 227 | -76 |
| 1977-05-19 | vs CHN | 37 | W 6-0 | 13-24 | 6 | 8,923 | Phil Niekro | Rick Reuschel | Phil Niekro | Rick Reuschel | | 157 | 227 | -70 |
| 1977-05-20 | vs CHN | 38 | L 4-13 | 13-25 | 6 | 11,451 | Don Collins | Ray Burris | Ray Burris | Don Collins | | 161 | 240 | -79 |
| 1977-05-21 | vs CHN | 39 | L 3-9 | 13-26 | 6 | 11,842 | Max Leon | Mike Krukow | Donnie Moore | Max Leon | Bruce Sutter | 164 | 249 | -85 |
| 1977-05-22 | vs CHN | 40 | W 5-2 | 14-26 | 6 | 7,635 | Andy Messersmith | Bill Bonham | Andy Messersmith | Bill Bonham | Jamie Easterly | 169 | 251 | -82 |
| 1977-05-23 | @ SDN | 41 | W 6-5 | 15-26 | 6 | 9,497 | Phil Niekro | Tom Griffin | Buzz Capra | Dave Tomlin | | 175 | 256 | -81 |
| 1977-05-24 | @ SDN | 42 | L 3-4 | 15-27 | 6 | 7,277 | Frank LaCorte | Bob Shirley | Rick Sawyer | Frank LaCorte | Rollie Fingers | 178 | 260 | -82 |
| 1977-05-25 | @ SDN | 43 | L 5-6 | 15-28 | 6 | 14,288 | Max Leon | Bob Owchinko | Tom Griffin | Jamie Easterly | | 183 | 266 | -83 |
| 1977-05-26 | @ SDN | 44 | W 8-3 | 16-28 | 6 | 13,786 | Andy Messersmith | John D'Acquisto | Andy Messersmith | Tom Griffin | | 191 | 269 | -78 |
| 1977-05-27 | @ SFN | 45 | L 3-4 | 16-29 | 6 | 3,842 | Phil Niekro | Jim Barr | Charlie Williams | Buzz Capra | | 194 | 273 | -79 |
| 1977-05-28 | @ SFN | 46 | W 2-1 | 17-29 | 6 | 5,810 | Jamie Easterly | Ed Halicki | Jamie Easterly | Ed Halicki | Rick Camp | 196 | 274 | -78 |
| 1977-05-29 | @ SFN | 47 | L 2-3 | 17-30 | 6 | 4,242 | Max Leon | John Curtis | Gary Lavelle | Dave Campbell | | 198 | 277 | -79 |
| 1977-05-30 | @ CIN | 48 | L 3-7 | 17-31 | 6 | 20,585 | Andy Messersmith | Tom Hume | Dale Murray | Don Collins | | 201 | 284 | -83 |
| 1977-05-31 | @ CIN | 49 | L 3-5 | 17-32 | 6 | 18,587 | Phil Niekro | Gary Nolan | Dale Murray | Phil Niekro | | 204 | 289 | -85 |
| 1977-06-01 | @ CIN | 50 | L 2-5 | 17-33 | 6 | 18,604 | Jamie Easterly | Pat Zachry | Pat Zachry | Jamie Easterly | | 206 | 294 | -88 |
| 1977-06-03 | vs SFN | 51 | W 5-3 | 19-33 | 6 | 0 | Max Leon | Lynn McGlothen | Don Collins | Lynn McGlothen | Rick Camp | 211 | 297 | -86 |
| 1977-06-03 | vs SFN | 52 | W 8-7 | 19-33 | 6 | 13,284 | Andy Messersmith | Bob Knepper | Rick Camp | Gary Lavelle | | 219 | 304 | -85 |
| 1977-06-04 | vs SFN | 53 | W 7-1 | 20-33 | 6 | 13,818 | Phil Niekro | John Curtis | Phil Niekro | John Curtis | | 226 | 305 | -79 |
| 1977-06-05 | vs SFN | 54 | L 9-10 | 20-34 | 6 | 7,464 | Jamie Easterly | Ed Halicki | Ed Halicki | Jamie Easterly | Gary Lavelle | 235 | 315 | -80 |
| 1977-06-06 | @ MON | 55 | L 2-4 | 20-35 | 6 | 8,924 | Frank LaCorte | Jackie Brown | Jackie Brown | Frank LaCorte | | 237 | 319 | -82 |
| 1977-06-08 | @ MON | 56 | L 0-6 | 20-36 | 6 | 15,425 | Andy Messersmith | Steve Rogers | Steve Rogers | Andy Messersmith | | 237 | 325 | -88 |
| 1977-06-09 | vs PHI | 57 | W 3-0 | 21-36 | 6 | 6,791 | Phil Niekro | Jim Kaat | Phil Niekro | Jim Kaat | | 240 | 325 | -85 |
| 1977-06-10 | vs PHI | 58 | L 5-7 | 21-37 | 6 | 9,274 | Max Leon | Randy Lerch | Ron Reed | Dave Campbell | Gene Garber | 245 | 332 | -87 |
| 1977-06-11 | vs PHI | 59 | L 10-13 | 21-38 | 6 | 12,760 | Joey McLaughlin | Larry Christenson | Warren Brusstar | Buzz Capra | Gene Garber | 255 | 345 | -90 |
| 1977-06-12 | vs PHI | 60 | W 5-3 | 22-38 | 6 | 15,716 | Andy Messersmith | Jim Lonborg | Rick Camp | Gene Garber | | 260 | 348 | -88 |
| 1977-06-13 | vs NYN | 61 | L 1-7 | 22-39 | 6 | 8,950 | Phil Niekro | Jerry Koosman | Jerry Koosman | Phil Niekro | | 261 | 355 | -94 |
| 1977-06-14 | vs NYN | 62 | W 8-5 | 23-39 | 6 | 21,954 | Max Leon | Jackson Todd | Max Leon | Jackson Todd | Don Collins | 269 | 360 | -91 |
| 1977-06-15 | vs NYN | 63 | L 5-6 | 23-40 | 6 | 6,343 | Joey McLaughlin | Jon Matlack | Bob Apodaca | Buzz Capra | Skip Lockwood | 274 | 366 | -92 |
| 1977-06-17 | @ PHI | 64 | L 5-11 | 23-41 | 6 | 37,143 | Andy Messersmith | Larry Christenson | Larry Christenson | Andy Messersmith | Ron Reed | 279 | 377 | -98 |
| 1977-06-18 | @ PHI | 65 | L 5-8 | 23-42 | 6 | 32,016 | Phil Niekro | Jim Lonborg | Tug McGraw | Frank LaCorte | | 284 | 385 | -101 |
| 1977-06-19 | @ PHI | 66 | L 2-4 | 23-43 | 6 | 40,126 | Steve Hargan | Steve Carlton | Steve Carlton | Steve Hargan | | 286 | 389 | -103 |
| 1977-06-21 | @ NYN | 67 | L 2-5 | 23-44 | 6 | 10,613 | Andy Messersmith | Jon Matlack | Rick Baldwin | Don Collins | | 288 | 394 | -106 |
| 1977-06-22 | @ NYN | 68 | W 4-1 | 24-44 | 6 | 12,087 | Phil Niekro | Nino Espinosa | Phil Niekro | Nino Espinosa | | 292 | 395 | -103 |
| 1977-06-24 | vs SDN | 69 | W 9-8 | 25-44 | 6 | 8,210 | Steve Hargan | Bob Owchinko | Rick Camp | Dave Wehrmeister | | 301 | 403 | -102 |
| 1977-06-25 | vs SDN | 70 | W 9-5 | 26-44 | 6 | 10,958 | Andy Messersmith | Bob Shirley | Andy Messersmith | Bob Shirley | | 310 | 408 | -98 |
| 1977-06-26 | vs SDN | 71 | W 8-5 | 27-44 | 6 | 13,484 | Phil Niekro | Dave Freisleben | Phil Niekro | Dave Freisleben | Max Leon | 318 | 413 | -95 |
| 1977-06-27 | vs LAN | 72 | L 1-2 | 27-45 | 6 | 10,902 | Don Collins | Burt Hooton | Burt Hooton | Don Collins | Charlie Hough | 319 | 415 | -96 |
| 1977-06-28 | vs LAN | 73 | L 2-3 | 27-46 | 6 | 8,293 | Steve Hargan | Tommy John | Mike Garman | Max Leon | Charlie Hough | 321 | 418 | -97 |
| 1977-06-29 | vs LAN | 74 | L 7-13 | 27-47 | 6 | 10,277 | Andy Messersmith | Don Sutton | Don Sutton | Andy Messersmith | | 328 | 431 | -103 |
| 1977-06-30 | vs LAN | 75 | W 5-4 | 28-47 | 6 | 8,861 | Phil Niekro | Rick Rhoden | Phil Niekro | Charlie Hough | | 333 | 435 | -102 |
| 1977-07-01 | @ HOU | 76 | L 1-3 | 28-48 | 6 | 8,378 | Don Collins | J.R. Richard | J.R. Richard | Don Collins | Joe Niekro | 334 | 438 | -104 |
| 1977-07-02 | @ HOU | 77 | W 2-1 | 29-48 | 6 | 12,535 | Steve Hargan | Ken Forsch | Max Leon | Joe Niekro | Steve Kline | 336 | 439 | -103 |
| 1977-07-03 | @ HOU | 78 | L 3-9 | 29-49 | 6 | 20,397 | Andy Messersmith | Floyd Bannister | Floyd Bannister | Frank LaCorte | | 339 | 448 | -109 |
| 1977-07-04 | vs CIN | 79 | W 5-4 | 30-49 | 6 | 50,595 | Phil Niekro | Tom Seaver | Phil Niekro | Tom Seaver | Rick Camp | 344 | 452 | -108 |
| 1977-07-05 | vs CIN | 80 | L 3-9 | 30-50 | 6 | 14,344 | Don Collins | Woodie Fryman | Woodie Fryman | Don Collins | Pedro Borbon | 347 | 461 | -114 |
| 1977-07-06 | vs CIN | 81 | L 13-15 | 30-51 | 6 | 13,707 | Steve Hargan | Fred Norman | Pedro Borbon | Dave Campbell | | 360 | 476 | -116 |
| 1977-07-08 | @ SFN | 82 | L 2-3 | 30-52 | 6 | 2,684 | Phil Niekro | Jim Barr | Gary Lavelle | Phil Niekro | | 362 | 479 | -117 |
| 1977-07-09 | @ SFN | 83 | L 4-5 | 30-53 | 6 | 3,699 | Don Collins | Ed Halicki | Randy Moffitt | Jamie Easterly | | 366 | 484 | -118 |
| 1977-07-10 | @ SFN | 84 | L 2-5 | 30-55 | 6 | 0 | Dick Ruthven | Charlie Williams | Charlie Williams | Dick Ruthven | | 368 | 489 | -121 |
| 1977-07-10 | @ SFN | 85 | L 5-12 | 30-55 | 6 | 17,819 | Eddie Solomon | John Montefusco | Dave Heaverlo | Eddie Solomon | | 373 | 501 | -128 |
| 1977-07-12 | @ CIN | 86 | W 4-3 | 31-55 | 6 | 30,541 | Phil Niekro | Doug Capilla | Phil Niekro | Joe Henderson | Rick Camp | 377 | 504 | -127 |
| 1977-07-13 | @ CIN | 87 | W 4-3 | 32-55 | 6 | 30,524 | Buzz Capra | Jack Billingham | Buzz Capra | Jack Billingham | Rick Camp | 381 | 507 | -126 |
| 1977-07-14 | @ CIN | 88 | L 1-7 | 32-56 | 6 | 30,143 | Dick Ruthven | Tom Seaver | Tom Seaver | Dick Ruthven | | 382 | 514 | -132 |
| 1977-07-15 | vs SFN | 89 | W 3-2 | 33-56 | 6 | 8,966 | Eddie Solomon | John Montefusco | Eddie Solomon | John Montefusco | Rick Camp | 385 | 516 | -131 |
| 1977-07-16 | vs SFN | 90 | L 0-4 | 33-57 | 6 | 14,965 | Phil Niekro | Bob Knepper | Bob Knepper | Phil Niekro | Gary Lavelle | 385 | 520 | -135 |
| 1977-07-17 | vs SFN | 91 | W 11-10 | 34-57 | 6 | 8,452 | Buzz Capra | Jim Barr | Max Leon | Lynn McGlothen | | 396 | 530 | -134 |
| 1977-07-21 | @ CHN | 92 | L 3-4 | 34-58 | 6 | 20,895 | Phil Niekro | Bill Bonham | Paul Reuschel | Rick Camp | | 399 | 534 | -135 |
| 1977-07-22 | @ CHN | 93 | L 0-1 | 34-59 | 6 | 17,026 | Dick Ruthven | Rick Reuschel | Rick Reuschel | Dick Ruthven | | 399 | 535 | -136 |
| 1977-07-23 | @ CHN | 94 | W 5-4 | 35-59 | 6 | 26,224 | Eddie Solomon | Mike Krukow | Rick Camp | Paul Reuschel | | 404 | 539 | -135 |
| 1977-07-24 | @ PIT | 95 | L 6-7 | 35-60 | 6 | 22,123 | Buzz Capra | Bruce Kison | Kent Tekulve | Steve Hargan | | 410 | 546 | -136 |
| 1977-07-25 | @ PIT | 96 | L 3-6 | 35-61 | 6 | 8,752 | Phil Niekro | Jerry Reuss | Jerry Reuss | Phil Niekro | | 413 | 552 | -139 |
| 1977-07-26 | @ SLN | 97 | L 2-4 | 35-62 | 6 | 18,730 | Dick Ruthven | Bob Forsch | Bob Forsch | Dick Ruthven | Buddy Schultz | 415 | 556 | -141 |
| 1977-07-27 | @ SLN | 98 | L 3-5 | 35-63 | 6 | 15,248 | Eddie Solomon | Tom Underwood | Al Hrabosky | Rick Camp | Butch Metzger | 418 | 561 | -143 |
| 1977-07-28 | @ SLN | 99 | L 0-3 | 35-64 | 6 | 16,979 | Buzz Capra | John Urrea | John Urrea | Buzz Capra | | 418 | 564 | -146 |
| 1977-07-29 | vs PIT | 100 | W 5-3 | 36-64 | 6 | 9,505 | Phil Niekro | Bruce Kison | Phil Niekro | Bruce Kison | | 423 | 567 | -144 |
| 1977-07-30 | vs PIT | 101 | L 6-10 | 36-65 | 6 | 19,006 | Dick Ruthven | Jerry Reuss | Terry Forster | Don Collins | | 429 | 577 | -148 |
| 1977-07-31 | vs PIT | 102 | W 8-3 | 37-65 | 6 | 12,467 | Eddie Solomon | John Candelaria | Eddie Solomon | John Candelaria | Preston Hanna | 437 | 580 | -143 |
| 1977-08-01 | vs SLN | 103 | L 5-6 | 37-66 | 6 | 6,933 | Buzz Capra | Tom Underwood | Tom Underwood | Max Leon | Butch Metzger | 442 | 586 | -144 |
| 1977-08-02 | vs SLN | 104 | L 4-6 | 37-67 | 6 | 6,378 | Phil Niekro | John Urrea | Butch Metzger | Phil Niekro | Clay Carroll | 446 | 592 | -146 |
| 1977-08-03 | vs SLN | 105 | L 1-5 | 37-68 | 6 | 5,954 | Dick Ruthven | Eric Rasmussen | Eric Rasmussen | Dick Ruthven | | 447 | 597 | -150 |
| 1977-08-04 | vs MON | 106 | W 5-2 | 38-68 | 6 | 3,987 | Eddie Solomon | Stan Bahnsen | Eddie Solomon | Stan Bahnsen | Dave Campbell | 452 | 599 | -147 |
| 1977-08-05 | vs MON | 107 | L 4-6 | 38-69 | 6 | 8,100 | Buzz Capra | Wayne Twitchell | Don Stanhouse | Dave Campbell | Joe Kerrigan | 456 | 605 | -149 |
| 1977-08-06 | vs MON | 108 | W 3-1 | 39-69 | 6 | 10,198 | Phil Niekro | Steve Rogers | Phil Niekro | Steve Rogers | | 459 | 606 | -147 |
| 1977-08-07 | vs MON | 109 | W 6-2 | 40-69 | 6 | 5,410 | Dick Ruthven | Jackie Brown | Dick Ruthven | Jackie Brown | | 465 | 608 | -143 |
| 1977-08-10 | @ SDN | 110 | L 6-8 | 40-71 | 6 | 0 | Phil Niekro | Randy Jones | Randy Jones | Phil Niekro | Rollie Fingers | 471 | 616 | -145 |
| 1977-08-10 | @ SDN | 111 | L 1-2 | 40-71 | 6 | 19,533 | Buzz Capra | Tom Griffin | Rick Sawyer | Duane Theiss | | 472 | 618 | -146 |
| 1977-08-11 | @ SDN | 112 | L 1-2 | 40-72 | 6 | 11,116 | Preston Hanna | Bob Owchinko | Rick Sawyer | Preston Hanna | | 473 | 620 | -147 |
| 1977-08-12 | @ LAN | 113 | W 5-2 | 41-72 | 6 | 39,309 | Dick Ruthven | Don Sutton | Duane Theiss | Don Sutton | | 478 | 622 | -144 |
| 1977-08-13 | @ LAN | 114 | L 0-11 | 41-73 | 6 | 31,251 | Eddie Solomon | Tommy John | Tommy John | Eddie Solomon | | 478 | 633 | -155 |
| 1977-08-14 | @ LAN | 115 | L 0-1 | 41-74 | 6 | 27,169 | Phil Niekro | Doug Rau | Doug Rau | Phil Niekro | | 478 | 634 | -156 |
| 1977-08-15 | vs HOU | 116 | L 3-15 | 41-75 | 6 | 5,919 | Buzz Capra | J.R. Richard | J.R. Richard | Buzz Capra | Dan Larson | 481 | 649 | -168 |
| 1977-08-16 | vs HOU | 117 | L 1-4 | 41-76 | 6 | 6,759 | Dick Ruthven | Mark Lemongello | Mark Lemongello | Dick Ruthven | Bo McLaughlin | 482 | 653 | -171 |
| 1977-08-17 | vs HOU | 118 | W 9-6 | 42-76 | 6 | 3,287 | Preston Hanna | Tom Dixon | Don Collins | Joe Sambito | Dave Campbell | 491 | 659 | -168 |
| 1977-08-19 | @ MON | 119 | W 5-3 | 43-77 | 6 | 26,433 | Phil Niekro | Steve Rogers | Phil Niekro | Steve Rogers | | 496 | 662 | -166 |
| 1977-08-19 | @ MON | 120 | L 2-7 | 43-77 | 6 | 26,433 | Eddie Solomon | Fred Holdsworth | Fred Holdsworth | Eddie Solomon | Santo Alcala | 498 | 669 | -171 |
| 1977-08-20 | @ MON | 121 | L 3-6 | 43-78 | 6 | 18,535 | Buzz Capra | Jackie Brown | Jackie Brown | Buzz Capra | Joe Kerrigan | 501 | 675 | -174 |
| 1977-08-21 | @ MON | 122 | L 4-10 | 43-79 | 6 | 2,539 | Dick Ruthven | Stan Bahnsen | Don Stanhouse | Dick Ruthven | | 505 | 685 | -180 |
| 1977-08-22 | vs PHI | 123 | L 4-5 | 43-80 | 6 | 5,711 | Preston Hanna | Jim Lonborg | Jim Lonborg | Preston Hanna | Ron Reed | 509 | 690 | -181 |
| 1977-08-23 | vs PHI | 124 | L 2-3 | 43-81 | 6 | 5,972 | Phil Niekro | Randy Lerch | Randy Lerch | Phil Niekro | Tug McGraw | 511 | 693 | -182 |
| 1977-08-24 | vs CHN | 125 | W 4-3 | 44-81 | 6 | 4,649 | Eddie Solomon | Mike Krukow | Don Collins | Guillermo Hernandez | Dave Campbell | 515 | 696 | -181 |
| 1977-08-25 | vs CHN | 126 | W 8-6 | 45-81 | 6 | 4,164 | Dick Ruthven | Bill Bonham | Dick Ruthven | Bill Bonham | Mike Davey | 523 | 702 | -179 |
| 1977-08-26 | vs NYN | 127 | W 5-3 | 46-81 | 6 | 18,001 | Preston Hanna | Jerry Koosman | Preston Hanna | Jerry Koosman | Mike Davey | 528 | 705 | -177 |
| 1977-08-27 | vs NYN | 128 | W 5-4 | 47-81 | 6 | 8,328 | Phil Niekro | Pat Zachry | Phil Niekro | Skip Lockwood | | 533 | 709 | -176 |
| 1977-08-28 | vs NYN | 129 | W 6-4 | 48-81 | 6 | 6,199 | Eddie Solomon | Nino Espinosa | Eddie Solomon | Nino Espinosa | Dave Campbell | 539 | 713 | -174 |
| 1977-08-29 | @ PHI | 130 | L 2-3 | 48-82 | 6 | 36,263 | Buzz Capra | Larry Christenson | Gene Garber | Steve Hargan | | 541 | 716 | -175 |
| 1977-08-30 | @ PHI | 131 | L 2-11 | 48-83 | 6 | 32,278 | Preston Hanna | Jim Kaat | Jim Kaat | Preston Hanna | | 543 | 727 | -184 |
| 1977-08-31 | @ PHI | 132 | L 1-6 | 48-84 | 6 | 29,102 | Phil Niekro | Steve Carlton | Steve Carlton | Phil Niekro | | 544 | 733 | -189 |
| 1977-09-02 | @ NYN | 133 | L 0-4 | 49-85 | 6 | 0 | Eddie Solomon | Pat Zachry | Pat Zachry | Eddie Solomon | | 544 | 737 | -193 |
| 1977-09-02 | @ NYN | 134 | W 3-2 | 49-85 | 6 | 10,080 | Buzz Capra | Jackson Todd | Buzz Capra | Jackson Todd | Dave Campbell | 547 | 739 | -192 |
| 1977-09-03 | @ NYN | 135 | L 1-9 | 49-86 | 6 | 15,460 | Preston Hanna | Nino Espinosa | Nino Espinosa | Preston Hanna | | 548 | 748 | -200 |
| 1977-09-04 | @ NYN | 136 | W 7-5 | 50-86 | 6 | 9,435 | Phil Niekro | Bob Myrick | Phil Niekro | Rick Baldwin | Dave Campbell | 555 | 753 | -198 |
| 1977-09-05 | vs SFN | 137 | W 4-0 | 51-86 | 6 | 2,262 | Dick Ruthven | Jim Barr | Dick Ruthven | Jim Barr | | 559 | 753 | -194 |
| 1977-09-06 | vs SFN | 138 | L 2-12 | 51-87 | 6 | 877 | Eddie Solomon | Bob Knepper | Bob Knepper | Eddie Solomon | | 561 | 765 | -204 |
| 1977-09-07 | vs LAN | 139 | L 2-5 | 51-88 | 6 | 4,013 | Buzz Capra | Burt Hooton | Dennis Lewallyn | Buzz Capra | Elias Sosa | 563 | 770 | -207 |
| 1977-09-08 | vs LAN | 140 | L 4-5 | 51-89 | 6 | 3,556 | Phil Niekro | Don Sutton | Lance Rautzhan | Dave Campbell | Charlie Hough | 567 | 775 | -208 |
| 1977-09-09 | vs SDN | 141 | W 8-6 | 52-89 | 6 | 1,740 | Preston Hanna | Tom Griffin | Preston Hanna | Rick Sawyer | Dave Campbell | 575 | 781 | -206 |
| 1977-09-10 | vs SDN | 142 | W 9-6 | 53-89 | 6 | 7,967 | Dick Ruthven | Bob Owchinko | Dick Ruthven | Bob Owchinko | | 584 | 787 | -203 |
| 1977-09-11 | vs SDN | 143 | W 7-3 | 54-89 | 6 | 2,376 | Eddie Solomon | Randy Jones | Eddie Solomon | Randy Jones | Dave Campbell | 591 | 790 | -199 |
| 1977-09-12 | @ SFN | 144 | W 3-1 | 55-89 | 6 | 1,092 | Phil Niekro | Charlie Williams | Phil Niekro | Charlie Williams | | 594 | 791 | -197 |
| 1977-09-13 | @ SFN | 145 | L 7-8 | 55-90 | 6 | 1,029 | Mickey Mahler | Jim Barr | Randy Moffitt | Dave Campbell | | 601 | 799 | -198 |
| 1977-09-14 | @ SDN | 146 | L 4-6 | 55-91 | 6 | 12,478 | Preston Hanna | Bob Owchinko | Dan Spillner | Preston Hanna | Rollie Fingers | 605 | 805 | -200 |
| 1977-09-15 | @ SDN | 147 | W 8-7 | 56-91 | 6 | 3,740 | Dick Ruthven | Randy Jones | Buzz Capra | Rollie Fingers | | 613 | 812 | -199 |
| 1977-09-16 | @ LAN | 148 | L 2-3 | 56-92 | 6 | 22,217 | Eddie Solomon | Rick Rhoden | Lance Rautzhan | Eddie Solomon | | 615 | 815 | -200 |
| 1977-09-17 | @ LAN | 149 | L 3-7 | 56-93 | 6 | 52,527 | Phil Niekro | Don Sutton | Don Sutton | Phil Niekro | | 618 | 822 | -204 |
| 1977-09-18 | @ LAN | 150 | W 9-8 | 57-93 | 6 | 32,209 | Mickey Mahler | Burt Hooton | Buzz Capra | Mike Garman | Dave Campbell | 627 | 830 | -203 |
| 1977-09-20 | @ HOU | 151 | L 3-6 | 57-94 | 6 | 5,873 | Dick Ruthven | Joe Niekro | Joe Niekro | Dick Ruthven | | 630 | 836 | -206 |
| 1977-09-21 | @ HOU | 152 | W 5-3 | 58-94 | 6 | 6,282 | Phil Niekro | Joaquin Andujar | Phil Niekro | Joaquin Andujar | | 635 | 839 | -204 |
| 1977-09-22 | @ HOU | 153 | W 8-4 | 59-94 | 6 | 5,747 | Eddie Solomon | J.R. Richard | Eddie Solomon | J.R. Richard | Dave Campbell | 643 | 843 | -200 |
| 1977-09-23 | vs CIN | 154 | L 1-5 | 59-95 | 6 | 9,471 | Mickey Mahler | Paul Moskau | Paul Moskau | Mickey Mahler | Pedro Borbon | 644 | 848 | -204 |
| 1977-09-24 | vs CIN | 155 | L 7-8 | 59-96 | 6 | 25,893 | Dick Ruthven | Tom Hume | Tom Hume | Dick Ruthven | Pedro Borbon | 651 | 856 | -205 |
| 1977-09-25 | vs CIN | 156 | L 0-4 | 59-97 | 6 | 12,859 | Phil Niekro | Tom Seaver | Tom Seaver | Phil Niekro | | 651 | 860 | -209 |
| 1977-09-26 | vs HOU | 157 | W 12-10 | 60-97 | 6 | 7,001 | Eddie Solomon | Joaquin Andujar | Buzz Capra | Dan Larson | Dave Campbell | 663 | 870 | -207 |
| 1977-09-27 | vs HOU | 158 | L 5-7 | 60-98 | 6 | 1,467 | Mickey Mahler | J.R. Richard | J.R. Richard | Mickey Mahler | | 668 | 877 | -209 |
| 1977-09-28 | vs HOU | 159 | L 1-2 | 60-99 | 6 | 2,255 | Dick Ruthven | Mark Lemongello | Mark Lemongello | Dick Ruthven | | 669 | 879 | -210 |
| 1977-09-30 | @ CIN | 160 | L 1-7 | 60-100 | 6 | 19,653 | Phil Niekro | Tom Seaver | Tom Seaver | Phil Niekro | | 670 | 886 | -216 |
| 1977-10-01 | @ CIN | 161 | L 2-6 | 60-101 | 6 | 20,701 | Preston Hanna | Tom Hume | Tom Hume | Preston Hanna | Manny Sarmiento | 672 | 892 | -220 |
| 1977-10-02 | @ CIN | 162 | W 6-3 | 61-101 | 6 | 40,204 | Mickey Mahler | Fred Norman | Mickey Mahler | Fred Norman | Dave Campbell | 678 | 895 | -217 |