| 1970-04-07 | @ SDN | 1 | L 3-8 | 0-1 | 4 | 25,125 | Phil Niekro | Pat Dobson | Pat Dobson | Phil Niekro | Ron Herbel | 3 | 8 | -5 |
| 1970-04-08 | @ SDN | 2 | W 6-1 | 1-1 | 2 | 6,187 | Pat Jarvis | Al Santorini | Pat Jarvis | Al Santorini | | 9 | 9 | 0 |
| 1970-04-09 | @ SDN | 3 | W 6-1 | 2-1 | 2 | 5,818 | Jim Nash | Clay Kirby | Jim Nash | Clay Kirby | | 15 | 10 | 5 |
| 1970-04-10 | @ HOU | 4 | W 5-0 | 3-1 | 2 | 20,305 | George Stone | Tom Griffin | George Stone | Tom Griffin | | 20 | 10 | 10 |
| 1970-04-11 | @ HOU | 5 | L 7-8 | 3-2 | 3 | 16,047 | Milt Pappas | Jim Bouton | Jim Bouton | Milt Pappas | Fred Gladding | 27 | 18 | 9 |
| 1970-04-12 | @ HOU | 6 | L 3-8 | 3-3 | 3 | 12,747 | Phil Niekro | Larry Dierker | Larry Dierker | Phil Niekro | | 30 | 26 | 4 |
| 1970-04-13 | vs SFN | 7 | W 9-3 | 4-3 | 2 | 37,181 | Pat Jarvis | Frank Reberger | Pat Jarvis | Frank Reberger | Bob Priddy | 39 | 29 | 10 |
| 1970-04-14 | vs SFN | 8 | L 11-15 | 4-4 | 3 | 11,350 | Jim Nash | Rich Robertson | Don McMahon | Gary Neibauer | | 50 | 44 | 6 |
| 1970-04-15 | vs SDN | 9 | W 7-5 | 5-4 | 2 | 5,457 | George Stone | Mike Corkins | George Stone | Mike Corkins | Bob Priddy | 57 | 49 | 8 |
| 1970-04-16 | vs SDN | 10 | L 4-5 | 5-5 | 3 | 5,358 | Phil Niekro | Pat Dobson | Gary Ross | Phil Niekro | Tom Dukes | 61 | 54 | 7 |
| 1970-04-18 | vs LAN | 11 | L 4-5 | 5-6 | 4 | 21,815 | Pat Jarvis | Don Sutton | Don Sutton | Pat Jarvis | Jim Brewer | 65 | 59 | 6 |
| 1970-04-19 | vs LAN | 12 | L 1-10 | 5-7 | 4 | 18,835 | Jim Nash | Alan Foster | Alan Foster | Jim Nash | | 66 | 69 | -3 |
| 1970-04-20 | vs CIN | 13 | L 2-6 | 5-8 | 5 | 6,891 | George Stone | Jim Merritt | Jim Merritt | George Stone | | 68 | 75 | -7 |
| 1970-04-21 | vs CIN | 14 | L 8-13 | 5-9 | 6 | 7,897 | Phil Niekro | Gary Nolan | Gary Nolan | Phil Niekro | Tony Cloninger | 76 | 88 | -12 |
| 1970-04-23 | @ PIT | 15 | L 6-8 | 5-10 | 6 | 4,987 | Pat Jarvis | Luke Walker | Luke Walker | Pat Jarvis | Dave Giusti | 82 | 96 | -14 |
| 1970-04-24 | @ PIT | 16 | W 9-0 | 6-10 | 5 | 5,413 | Jim Nash | Bob Moose | Jim Nash | Bob Moose | | 91 | 96 | -5 |
| 1970-04-25 | @ PIT | 17 | L 7-8 | 6-11 | 5 | 7,125 | George Stone | Dock Ellis | Dave Giusti | Hoyt Wilhelm | Al McBean | 98 | 104 | -6 |
| 1970-04-26 | @ PIT | 18 | W 2-0 | 7-11 | 4 | 15,307 | Phil Niekro | Bob Veale | Phil Niekro | Bob Veale | | 100 | 104 | -4 |
| 1970-04-28 | @ SLN | 19 | W 3-2 | 8-11 | 4 | 12,231 | Pat Jarvis | Mike Torrez | Hoyt Wilhelm | Mike Torrez | | 103 | 106 | -3 |
| 1970-04-29 | @ SLN | 20 | W 10-6 | 9-11 | 4 | 10,562 | Jim Nash | George Culver | Bob Priddy | Chuck Taylor | | 113 | 112 | 1 |
| 1970-04-30 | vs CHN | 21 | W 9-2 | 10-11 | 3 | 10,907 | George Stone | Fergie Jenkins | George Stone | Fergie Jenkins | | 122 | 114 | 8 |
| 1970-05-01 | vs CHN | 22 | W 3-2 | 11-11 | 2 | 16,741 | Phil Niekro | Joe Decker | Phil Niekro | Joe Decker | | 125 | 116 | 9 |
| 1970-05-02 | vs CHN | 23 | W 4-2 | 12-11 | 2 | 16,154 | Pat Jarvis | Ken Holtzman | Pat Jarvis | Ken Holtzman | | 129 | 118 | 11 |
| 1970-05-04 | vs PIT | 24 | W 5-3 | 13-11 | 2 | 7,457 | Jim Nash | Luke Walker | Jim Nash | Luke Walker | Bob Priddy | 134 | 121 | 13 |
| 1970-05-05 | vs PIT | 25 | W 12-6 | 14-11 | 2 | 9,199 | George Stone | Bob Moose | George Stone | Bob Moose | Hoyt Wilhelm | 146 | 127 | 19 |
| 1970-05-06 | vs PIT | 26 | W 3-0 | 15-11 | 2 | 9,782 | Phil Niekro | Dock Ellis | Phil Niekro | Dock Ellis | | 149 | 127 | 22 |
| 1970-05-08 | vs SLN | 27 | W 8-7 | 16-11 | 2 | 23,711 | Pat Jarvis | Bob Gibson | Bob Priddy | Chuck Taylor | | 157 | 134 | 23 |
| 1970-05-09 | vs SLN | 28 | W 5-3 | 17-11 | 2 | 28,381 | Jim Nash | George Culver | Jim Nash | George Culver | Hoyt Wilhelm | 162 | 137 | 25 |
| 1970-05-10 | vs SLN | 29 | L 5-6 | 17-12 | 2 | 23,166 | George Stone | Mike Torrez | Jerry Johnson | Bob Priddy | Sal Campisi | 167 | 143 | 24 |
| 1970-05-11 | @ CHN | 30 | W 7-6 | 18-12 | 2 | 5,805 | Phil Niekro | Joe Decker | Phil Niekro | Archie Reynolds | Ron Kline | 174 | 149 | 25 |
| 1970-05-12 | @ CHN | 31 | L 3-4 | 18-13 | 2 | 5,264 | Pat Jarvis | Ken Holtzman | Phil Regan | Bob Priddy | | 177 | 153 | 24 |
| 1970-05-15 | @ CIN | 32 | W 3-1 | 19-13 | 2 | 27,220 | Jim Nash | Gary Nolan | Jim Nash | Gary Nolan | Hoyt Wilhelm | 180 | 154 | 26 |
| 1970-05-16 | @ CIN | 33 | L 0-2 | 19-14 | 2 | 15,382 | Phil Niekro | Jim McGlothlin | Jim McGlothlin | Phil Niekro | | 180 | 156 | 24 |
| 1970-05-17 | @ CIN | 34 | L 1-5 | 19-16 | 3 | 0 | Pat Jarvis | Jim Merritt | Jim Merritt | Pat Jarvis | | 181 | 161 | 20 |
| 1970-05-17 | @ CIN | 35 | L 6-7 | 19-16 | 3 | 33,217 | George Stone | Wayne Simpson | Don Gullett | Gary Neibauer | | 187 | 168 | 19 |
| 1970-05-19 | @ SFN | 36 | W 4-2 | 20-16 | 3 | 5,254 | Milt Pappas | Juan Marichal | Milt Pappas | Juan Marichal | | 191 | 170 | 21 |
| 1970-05-20 | @ SFN | 37 | W 6-1 | 21-16 | 3 | 4,192 | Jim Nash | Gaylord Perry | Hoyt Wilhelm | Gaylord Perry | | 197 | 171 | 26 |
| 1970-05-21 | @ LAN | 38 | L 3-6 | 21-17 | 3 | 16,183 | Phil Niekro | Claude Osteen | Claude Osteen | Phil Niekro | Jim Brewer | 200 | 177 | 23 |
| 1970-05-22 | @ LAN | 39 | W 1-0 | 22-17 | 3 | 45,716 | Pat Jarvis | Sandy Vance | Pat Jarvis | Sandy Vance | | 201 | 177 | 24 |
| 1970-05-23 | @ LAN | 40 | W 5-1 | 23-17 | 2 | 27,099 | George Stone | Don Sutton | George Stone | Don Sutton | | 206 | 178 | 28 |
| 1970-05-24 | @ LAN | 41 | L 1-8 | 23-18 | 3 | 19,425 | Milt Pappas | Alan Foster | Alan Foster | Milt Pappas | Joe Moeller | 207 | 186 | 21 |
| 1970-05-26 | vs HOU | 42 | W 5-3 | 24-18 | 3 | 18,239 | Jim Nash | Larry Dierker | Jim Nash | Larry Dierker | Hoyt Wilhelm | 212 | 189 | 23 |
| 1970-05-27 | vs HOU | 43 | W 8-1 | 25-18 | 2 | 11,025 | Phil Niekro | Denny Lemaster | Phil Niekro | Denny Lemaster | | 220 | 190 | 30 |
| 1970-05-29 | vs PHI | 44 | W 5-2 | 26-18 | 2 | 5,565 | Pat Jarvis | Chris Short | Pat Jarvis | Chris Short | | 225 | 192 | 33 |
| 1970-05-30 | vs PHI | 45 | L 5-7 | 26-19 | 2 | 11,064 | George Stone | Jim Bunning | Jim Bunning | Gary Neibauer | Joe Hoerner | 230 | 199 | 31 |
| 1970-05-31 | vs PHI | 46 | W 9-1 | 27-19 | 2 | 18,482 | Jim Nash | Rick Wise | Jim Nash | Rick Wise | | 239 | 200 | 39 |
| 1970-06-02 | vs NYN | 47 | W 4-1 | 28-19 | 2 | 10,585 | Phil Niekro | Gary Gentry | Phil Niekro | Gary Gentry | | 243 | 201 | 42 |
| 1970-06-04 | vs NYN | 48 | W 3-1 | 29-19 | 2 | 19,809 | Pat Jarvis | Tom Seaver | Pat Jarvis | Tom Seaver | | 246 | 202 | 44 |
| 1970-06-05 | vs MON | 49 | L 2-3 | 29-20 | 2 | 11,742 | George Stone | Mike Wegener | Bill Dillman | Hoyt Wilhelm | Claude Raymond | 248 | 205 | 43 |
| 1970-06-06 | vs MON | 50 | L 4-12 | 29-21 | 2 | 14,981 | Jim Nash | Bill Stoneman | Bill Stoneman | Jim Nash | Claude Raymond | 252 | 217 | 35 |
| 1970-06-07 | vs MON | 51 | L 1-10 | 29-22 | 2 | 30,801 | Phil Niekro | Carl Morton | Carl Morton | Phil Niekro | | 253 | 227 | 26 |
| 1970-06-09 | @ PHI | 52 | L 1-2 | 29-23 | 2 | 15,810 | Pat Jarvis | Jim Bunning | Jim Bunning | Pat Jarvis | Dick Selma | 254 | 229 | 25 |
| 1970-06-10 | @ PHI | 53 | W 5-1 | 30-23 | 2 | 9,213 | George Stone | Chris Short | George Stone | Chris Short | | 259 | 230 | 29 |
| 1970-06-11 | @ PHI | 54 | W 6-4 | 31-23 | 2 | 7,862 | Jim Nash | Rick Wise | Jim Nash | Rick Wise | Bob Priddy | 265 | 234 | 31 |
| 1970-06-12 | @ NYN | 55 | L 1-8 | 31-24 | 2 | 46,710 | Phil Niekro | Gary Gentry | Gary Gentry | Phil Niekro | Ron Taylor | 266 | 242 | 24 |
| 1970-06-13 | @ NYN | 56 | L 1-4 | 31-25 | 2 | 41,515 | Mike McQueen | Ray Sadecki | Ray Sadecki | Mike McQueen | | 267 | 246 | 21 |
| 1970-06-14 | @ NYN | 57 | L 5-7 | 31-26 | 3 | 52,674 | Pat Jarvis | Tom Seaver | Tom Seaver | Pat Jarvis | | 272 | 253 | 19 |
| 1970-06-16 | @ MON | 58 | W 7-5 | 32-26 | 2 | 19,027 | George Stone | Carl Morton | Milt Pappas | Carl Morton | Mike McQueen | 279 | 258 | 21 |
| 1970-06-17 | @ MON | 59 | W 6-5 | 33-26 | 2 | 10,694 | Jim Nash | Mike Wegener | Larry Jaster | Claude Raymond | Bob Priddy | 285 | 263 | 22 |
| 1970-06-18 | @ MON | 60 | L 7-10 | 33-27 | 3 | 14,214 | Phil Niekro | Steve Renko | Bill Stoneman | Larry Jaster | Howie Reed | 292 | 273 | 19 |
| 1970-06-19 | vs HOU | 61 | W 7-6 | 35-27 | 2 | 0 | Mike McQueen | Jack Billingham | Ron Reed | Jim Ray | | 299 | 279 | 20 |
| 1970-06-19 | vs HOU | 62 | W 4-2 | 35-27 | 2 | 26,474 | Pat Jarvis | Denny Lemaster | Pat Jarvis | Denny Lemaster | | 303 | 281 | 22 |
| 1970-06-20 | vs HOU | 63 | L 6-9 | 35-28 | 2 | 17,528 | George Stone | Tom Griffin | Jim Bouton | George Stone | Fred Gladding | 309 | 290 | 19 |
| 1970-06-21 | vs HOU | 64 | W 6-4 | 36-28 | 2 | 17,558 | Jim Nash | Larry Dierker | Jim Nash | Larry Dierker | Bob Priddy | 315 | 294 | 21 |
| 1970-06-22 | vs LAN | 65 | L 2-4 | 36-29 | 3 | 12,162 | Phil Niekro | Alan Foster | Alan Foster | Phil Niekro | Jim Brewer | 317 | 298 | 19 |
| 1970-06-23 | vs LAN | 66 | L 0-7 | 36-30 | 3 | 15,145 | Mike McQueen | Bill Singer | Bill Singer | Mike McQueen | Pete Mikkelsen | 317 | 305 | 12 |
| 1970-06-24 | vs LAN | 67 | L 0-7 | 36-31 | 3 | 12,667 | Pat Jarvis | Joe Moeller | Joe Moeller | Pat Jarvis | | 317 | 312 | 5 |
| 1970-06-26 | @ SFN | 68 | L 1-4 | 36-32 | 3 | 7,790 | Ron Reed | Gaylord Perry | Gaylord Perry | Ron Reed | | 318 | 316 | 2 |
| 1970-06-27 | @ SFN | 69 | L 0-3 | 36-33 | 3 | 10,644 | George Stone | Skip Pitlock | Skip Pitlock | George Stone | Don McMahon | 318 | 319 | -1 |
| 1970-06-28 | @ SFN | 70 | L 4-6 | 36-35 | 3 | 0 | Jim Nash | Juan Marichal | Don McMahon | Bob Priddy | | 322 | 325 | -3 |
| 1970-06-28 | @ SFN | 71 | L 3-4 | 36-35 | 3 | 20,642 | Phil Niekro | Rich Robertson | Rich Robertson | Phil Niekro | Don McMahon | 325 | 329 | -4 |
| 1970-06-30 | @ CIN | 72 | W 8-2 | 37-35 | 3 | 51,050 | Pat Jarvis | Jim McGlothlin | Pat Jarvis | Jim McGlothlin | | 333 | 331 | 2 |
| 1970-07-01 | @ CIN | 73 | L 2-9 | 37-36 | 3 | 12,693 | Ron Reed | Wayne Simpson | Wayne Simpson | Ron Reed | | 335 | 340 | -5 |
| 1970-07-02 | @ CIN | 74 | L 1-2 | 37-37 | 3 | 14,599 | George Stone | Jim Merritt | Jim Merritt | George Stone | | 336 | 342 | -6 |
| 1970-07-03 | vs SDN | 75 | W 8-1 | 39-37 | 3 | 0 | Jim Nash | Clay Kirby | Jim Nash | Clay Kirby | | 344 | 343 | 1 |
| 1970-07-03 | vs SDN | 76 | W 9-4 | 39-37 | 3 | 19,001 | Phil Niekro | Pat Dobson | Phil Niekro | Pat Dobson | Hoyt Wilhelm | 353 | 347 | 6 |
| 1970-07-04 | vs SDN | 77 | W 2-1 | 40-37 | 3 | 18,229 | Pat Jarvis | Dave Roberts | Pat Jarvis | Dave Roberts | | 355 | 348 | 7 |
| 1970-07-05 | vs SDN | 78 | L 5-6 | 40-38 | 3 | 22,002 | Ron Reed | Danny Coombs | Ron Willis | Hoyt Wilhelm | Ron Herbel | 360 | 354 | 6 |
| 1970-07-06 | vs SFN | 79 | W 12-4 | 41-38 | 3 | 10,918 | George Stone | Jerry Johnson | George Stone | Jerry Johnson | | 372 | 358 | 14 |
| 1970-07-07 | vs SFN | 80 | L 5-8 | 41-39 | 3 | 12,158 | Jim Nash | Rich Robertson | Jerry Johnson | Bob Priddy | Don McMahon | 377 | 366 | 11 |
| 1970-07-08 | vs SFN | 81 | L 0-13 | 41-40 | 3 | 10,629 | Phil Niekro | Gaylord Perry | Gaylord Perry | Phil Niekro | | 377 | 379 | -2 |
| 1970-07-09 | vs SFN | 82 | L 6-7 | 41-41 | 3 | 11,026 | Pat Jarvis | Juan Marichal | Don McMahon | Bob Priddy | | 383 | 386 | -3 |
| 1970-07-10 | vs CIN | 83 | W 11-9 | 42-42 | 3 | 0 | Ron Reed | Jim Merritt | Ron Reed | Jim Merritt | Julio Navarro | 394 | 395 | -1 |
| 1970-07-10 | vs CIN | 84 | L 1-3 | 42-42 | 3 | 44,804 | George Stone | Tony Cloninger | Tony Cloninger | George Stone | Clay Carroll | 395 | 398 | -3 |
| 1970-07-11 | vs CIN | 85 | L 6-7 | 42-43 | 3 | 36,059 | Phil Niekro | Gary Nolan | Gary Nolan | Phil Niekro | Wayne Granger | 401 | 405 | -4 |
| 1970-07-12 | vs CIN | 86 | L 5-6 | 42-44 | 3 | 26,912 | Jim Nash | Wayne Simpson | Ray Washburn | Pat Jarvis | | 406 | 411 | -5 |
| 1970-07-16 | @ SLN | 87 | W 7-3 | 43-44 | 3 | 21,324 | Pat Jarvis | Steve Carlton | Pat Jarvis | Steve Carlton | | 413 | 414 | -1 |
| 1970-07-17 | @ SLN | 88 | L 6-11 | 43-45 | 3 | 20,899 | George Stone | Nelson Briles | Nelson Briles | George Stone | Frank Linzy | 419 | 425 | -6 |
| 1970-07-18 | @ SLN | 89 | W 8-7 | 44-45 | 3 | 32,593 | Jim Nash | Bob Gibson | Hoyt Wilhelm | Frank Linzy | | 427 | 432 | -5 |
| 1970-07-19 | @ SLN | 90 | L 1-3 | 44-46 | 3 | 24,415 | Ron Reed | Mike Torrez | Mike Torrez | Ron Reed | | 428 | 435 | -7 |
| 1970-07-20 | vs CHN | 91 | W 3-1 | 46-46 | 3 | 0 | Phil Niekro | Ken Holtzman | Phil Niekro | Ken Holtzman | | 431 | 436 | -5 |
| 1970-07-20 | vs CHN | 92 | W 5-0 | 46-46 | 3 | 24,663 | Don Cardwell | Joe Decker | Don Cardwell | Joe Decker | | 436 | 436 | 0 |
| 1970-07-21 | vs CHN | 93 | L 2-8 | 46-47 | 3 | 8,118 | Pat Jarvis | Fergie Jenkins | Fergie Jenkins | Pat Jarvis | | 438 | 444 | -6 |
| 1970-07-22 | @ PIT | 94 | L 3-5 | 46-48 | 3 | 19,145 | George Stone | Bruce Dal Canton | Bruce Dal Canton | George Stone | Dave Giusti | 441 | 449 | -8 |
| 1970-07-23 | @ PIT | 95 | L 5-6 | 46-49 | 3 | 14,377 | Jim Nash | Luke Walker | Dick Colpaert | Mike McQueen | Dave Giusti | 446 | 455 | -9 |
| 1970-07-24 | @ CHN | 96 | L 1-11 | 46-50 | 3 | 26,224 | Ron Reed | Ken Holtzman | Ken Holtzman | Ron Reed | | 447 | 466 | -19 |
| 1970-07-25 | @ CHN | 97 | W 9-0 | 47-50 | 3 | 31,555 | Phil Niekro | Fergie Jenkins | Phil Niekro | Fergie Jenkins | | 456 | 466 | -10 |
| 1970-07-26 | @ CHN | 98 | W 8-3 | 48-51 | 3 | 0 | Pat Jarvis | Bill Hands | Pat Jarvis | Bill Hands | Hoyt Wilhelm | 464 | 469 | -5 |
| 1970-07-26 | @ CHN | 99 | L 6-7 | 48-51 | 3 | 39,189 | Don Cardwell | Jim Colborn | Jim Colborn | Don Cardwell | Roberto Rodriguez | 470 | 476 | -6 |
| 1970-07-28 | vs SLN | 100 | L 4-6 | 48-52 | 3 | 13,904 | Jim Nash | Bob Gibson | Bob Gibson | Jim Nash | | 474 | 482 | -8 |
| 1970-07-29 | vs SLN | 101 | W 9-7 | 49-52 | 3 | 8,499 | Ron Reed | Mike Torrez | Ron Reed | Frank Linzy | Hoyt Wilhelm | 483 | 489 | -6 |
| 1970-07-30 | vs SLN | 102 | L 2-4 | 49-53 | 3 | 9,895 | Phil Niekro | Jerry Reuss | Jerry Reuss | Phil Niekro | Chuck Taylor | 485 | 493 | -8 |
| 1970-07-31 | vs PIT | 103 | W 4-3 | 50-53 | 3 | 12,196 | Pat Jarvis | Jim Nelson | Pat Jarvis | Jim Nelson | Hoyt Wilhelm | 489 | 496 | -7 |
| 1970-08-01 | vs PIT | 104 | L 10-20 | 50-54 | 3 | 28,333 | George Stone | Bruce Dal Canton | Orlando Pena | George Stone | Dave Giusti | 499 | 516 | -17 |
| 1970-08-02 | vs PIT | 105 | L 7-10 | 50-55 | 3 | 15,227 | Jim Nash | Dock Ellis | Dock Ellis | Jim Nash | Dave Giusti | 506 | 526 | -20 |
| 1970-08-03 | @ HOU | 106 | L 5-7 | 51-56 | 3 | 0 | Phil Niekro | Wade Blasingame | George Culver | Phil Niekro | Denny Lemaster | 511 | 533 | -22 |
| 1970-08-03 | @ HOU | 107 | W 3-1 | 51-56 | 3 | 23,443 | Ron Reed | Larry Dierker | Ron Reed | Larry Dierker | | 514 | 534 | -20 |
| 1970-08-04 | @ HOU | 108 | W 6-1 | 52-56 | 3 | 17,842 | Pat Jarvis | Ron Cook | Pat Jarvis | Ron Cook | Hoyt Wilhelm | 520 | 535 | -15 |
| 1970-08-05 | @ LAN | 109 | L 2-12 | 52-57 | 4 | 18,094 | George Stone | Alan Foster | Alan Foster | George Stone | | 522 | 547 | -25 |
| 1970-08-06 | @ LAN | 110 | W 4-1 | 53-57 | 4 | 20,181 | Jim Nash | Claude Osteen | Jim Nash | Claude Osteen | Hoyt Wilhelm | 526 | 548 | -22 |
| 1970-08-07 | @ SDN | 111 | W 8-2 | 54-58 | 4 | 0 | Phil Niekro | Dave Roberts | Phil Niekro | Dave Roberts | | 534 | 550 | -16 |
| 1970-08-07 | @ SDN | 112 | L 1-6 | 54-58 | 4 | 9,620 | Ron Reed | Clay Kirby | Clay Kirby | Ron Reed | | 535 | 556 | -21 |
| 1970-08-09 | @ SDN | 113 | L 2-4 | 54-59 | 4 | 6,276 | Pat Jarvis | Pat Dobson | Pat Dobson | Pat Jarvis | Tom Dukes | 537 | 560 | -23 |
| 1970-08-11 | vs MON | 114 | W 1-0 | 55-59 | 4 | 7,269 | Jim Nash | Carl Morton | Jim Nash | Carl Morton | | 538 | 560 | -22 |
| 1970-08-12 | vs MON | 115 | W 8-7 | 56-59 | 4 | 8,067 | Phil Niekro | Dan McGinn | Bob Priddy | Bill Stoneman | Hoyt Wilhelm | 546 | 567 | -21 |
| 1970-08-13 | vs MON | 116 | W 4-1 | 57-59 | 3 | 6,199 | George Stone | Mike Wegener | George Stone | Mike Wegener | Hoyt Wilhelm | 550 | 568 | -18 |
| 1970-08-14 | vs NYN | 117 | W 10-2 | 58-60 | 3 | 0 | Ron Reed | Nolan Ryan | Ron Reed | Nolan Ryan | | 560 | 570 | -10 |
| 1970-08-14 | vs NYN | 118 | L 2-4 | 58-60 | 3 | 27,922 | Pat Jarvis | Jerry Koosman | Jerry Koosman | Pat Jarvis | Rich Folkers | 562 | 574 | -12 |
| 1970-08-15 | vs NYN | 119 | W 3-2 | 59-60 | 3 | 31,897 | Phil Niekro | Tom Seaver | Hoyt Wilhelm | Tom Seaver | | 565 | 576 | -11 |
| 1970-08-16 | vs NYN | 120 | L 1-2 | 59-61 | 4 | 25,383 | Jim Nash | Jim McAndrew | Jim McAndrew | Jim Nash | | 566 | 578 | -12 |
| 1970-08-18 | vs PHI | 121 | W 3-2 | 60-61 | 3 | 9,560 | George Stone | Chris Short | Hoyt Wilhelm | Chris Short | | 569 | 580 | -11 |
| 1970-08-19 | vs PHI | 122 | W 3-2 | 61-61 | 3 | 8,129 | Pat Jarvis | Rick Wise | Pat Jarvis | Rick Wise | Bob Priddy | 572 | 582 | -10 |
| 1970-08-20 | vs PHI | 123 | W 6-2 | 62-61 | 3 | 9,868 | Ron Reed | Barry Lersch | Ron Reed | Barry Lersch | | 578 | 584 | -6 |
| 1970-08-21 | @ MON | 124 | L 4-6 | 62-62 | 4 | 25,237 | Phil Niekro | Carl Morton | Carl Morton | Phil Niekro | Howie Reed | 582 | 590 | -8 |
| 1970-08-22 | @ MON | 125 | L 1-4 | 62-63 | 4 | 27,037 | Jim Nash | Steve Renko | Steve Renko | Jim Nash | Howie Reed | 583 | 594 | -11 |
| 1970-08-24 | @ MON | 126 | W 6-0 | 63-63 | 4 | 16,314 | George Stone | Bill Stoneman | George Stone | Bill Stoneman | | 589 | 594 | -5 |
| 1970-08-25 | @ NYN | 127 | W 7-6 | 64-63 | 4 | 48,561 | Pat Jarvis | Nolan Ryan | Pat Jarvis | Nolan Ryan | Bob Priddy | 596 | 600 | -4 |
| 1970-08-26 | @ NYN | 128 | W 9-7 | 65-63 | 4 | 45,567 | Ron Reed | Jerry Koosman | Bob Priddy | Gary Gentry | | 605 | 607 | -2 |
| 1970-08-27 | @ NYN | 129 | L 1-5 | 65-64 | 4 | 39,810 | Phil Niekro | Jim McAndrew | Jim McAndrew | Phil Niekro | | 606 | 612 | -6 |
| 1970-08-28 | @ PHI | 130 | L 2-5 | 65-65 | 4 | 7,908 | Jim Nash | Chris Short | Chris Short | Jim Nash | Dick Selma | 608 | 617 | -9 |
| 1970-08-29 | @ PHI | 131 | L 9-10 | 65-66 | 4 | 9,747 | George Stone | Rick Wise | Joe Hoerner | Ron Reed | Dick Selma | 617 | 627 | -10 |
| 1970-08-30 | @ PHI | 132 | L 2-4 | 65-67 | 4 | 9,104 | Pat Jarvis | Barry Lersch | Barry Lersch | Pat Jarvis | Dick Selma | 619 | 631 | -12 |
| 1970-09-01 | vs LAN | 133 | L 3-6 | 65-69 | 4 | 0 | Phil Niekro | Claude Osteen | Ray Lamb | Phil Niekro | Pete Mikkelsen | 622 | 637 | -15 |
| 1970-09-01 | vs LAN | 134 | L 2-3 | 65-69 | 4 | 12,078 | Ron Reed | Joe Moeller | Joe Moeller | Ron Reed | Jim Brewer | 624 | 640 | -16 |
| 1970-09-02 | vs LAN | 135 | W 4-3 | 66-69 | 4 | 4,719 | Jim Nash | Don Sutton | Hoyt Wilhelm | Don Sutton | | 628 | 643 | -15 |
| 1970-09-03 | vs LAN | 136 | W 11-4 | 67-69 | 4 | 4,450 | George Stone | Alan Foster | George Stone | Alan Foster | | 639 | 647 | -8 |
| 1970-09-05 | vs SFN | 137 | W 5-2 | 69-69 | 4 | 0 | Phil Niekro | Ron Bryant | Phil Niekro | Jerry Johnson | | 644 | 649 | -5 |
| 1970-09-05 | vs SFN | 138 | W 5-3 | 69-69 | 4 | 13,820 | Mike McQueen | Rich Robertson | Don Cardwell | Rich Robertson | Hoyt Wilhelm | 649 | 652 | -3 |
| 1970-09-06 | vs SFN | 139 | L 0-1 | 69-70 | 4 | 11,418 | Ron Reed | Gaylord Perry | Gaylord Perry | Ron Reed | | 649 | 653 | -4 |
| 1970-09-07 | @ LAN | 140 | L 3-4 | 69-72 | 4 | 0 | Jim Nash | Don Sutton | Don Sutton | Jim Nash | Jim Brewer | 652 | 657 | -5 |
| 1970-09-07 | @ LAN | 141 | L 1-6 | 69-72 | 4 | 25,803 | Pat Jarvis | Alan Foster | Alan Foster | Pat Jarvis | | 653 | 663 | -10 |
| 1970-09-08 | @ LAN | 142 | W 3-2 | 70-72 | 4 | 13,192 | George Stone | Sandy Vance | George Stone | Sandy Vance | | 656 | 665 | -9 |
| 1970-09-09 | @ SDN | 143 | W 6-3 | 71-73 | 4 | 0 | Mike McQueen | Mike Corkins | Bob Priddy | Tom Dukes | | 662 | 668 | -6 |
| 1970-09-09 | @ SDN | 144 | L 4-7 | 71-73 | 4 | 4,877 | Phil Niekro | Steve Arlin | Earl Wilson | Phil Niekro | | 666 | 675 | -9 |
| 1970-09-10 | @ SDN | 145 | L 2-3 | 71-74 | 4 | 2,066 | Ron Reed | Dave Roberts | Dave Roberts | Ron Reed | Gary Ross | 668 | 678 | -10 |
| 1970-09-11 | @ HOU | 146 | L 2-3 | 71-75 | 4 | 7,928 | Jim Nash | Jack Billingham | Jack Billingham | Hoyt Wilhelm | | 670 | 681 | -11 |
| 1970-09-12 | @ HOU | 147 | W 5-3 | 72-75 | 4 | 9,821 | Pat Jarvis | Ken Forsch | Pat Jarvis | Ken Forsch | | 675 | 684 | -9 |
| 1970-09-13 | @ HOU | 148 | L 6-10 | 72-76 | 4 | 8,232 | George Stone | Don Wilson | Don Wilson | George Stone | Jim Ray | 681 | 694 | -13 |
| 1970-09-14 | @ SFN | 149 | L 5-7 | 72-77 | 4 | 2,735 | Mike McQueen | Frank Reberger | Frank Reberger | Mike McQueen | Don McMahon | 686 | 701 | -15 |
| 1970-09-15 | @ SFN | 150 | L 0-8 | 72-78 | 5 | 2,861 | Ron Reed | Gaylord Perry | Gaylord Perry | Ron Reed | | 686 | 709 | -23 |
| 1970-09-16 | @ SFN | 151 | W 10-7 | 73-78 | 4 | 3,166 | Jim Nash | Juan Marichal | Phil Niekro | Jerry Johnson | | 696 | 716 | -20 |
| 1970-09-18 | vs CIN | 152 | L 6-11 | 73-79 | 4 | 11,664 | Pat Jarvis | Tony Cloninger | Tony Cloninger | Pat Jarvis | Wayne Granger | 702 | 727 | -25 |
| 1970-09-19 | vs CIN | 153 | L 4-7 | 73-80 | 4 | 11,246 | Steve Barber | Jim McGlothlin | Jim McGlothlin | Steve Barber | Clay Carroll | 706 | 734 | -28 |
| 1970-09-20 | vs CIN | 154 | W 11-2 | 74-80 | 4 | 9,922 | Ron Reed | Jim Maloney | Ron Reed | Jim Maloney | | 717 | 736 | -19 |
| 1970-09-22 | vs SDN | 155 | W 3-2 | 75-80 | 4 | 2,293 | Jim Nash | Mike Corkins | Jim Nash | Earl Wilson | | 720 | 738 | -18 |
| 1970-09-23 | vs SDN | 156 | L 0-2 | 75-81 | 4 | 2,007 | Pat Jarvis | Steve Arlin | Steve Arlin | Pat Jarvis | | 720 | 740 | -20 |
| 1970-09-24 | vs SDN | 157 | L 0-5 | 75-82 | 4 | 2,068 | Mike McQueen | Dave Roberts | Dave Roberts | Mike McQueen | | 720 | 745 | -25 |
| 1970-09-25 | vs HOU | 158 | L 4-7 | 75-83 | 4 | 2,902 | Ron Reed | Don Wilson | Fred Gladding | Pat Jarvis | George Culver | 724 | 752 | -28 |
| 1970-09-26 | vs HOU | 159 | L 2-5 | 75-84 | 4 | 3,078 | George Stone | Larry Dierker | Larry Dierker | George Stone | | 726 | 757 | -31 |
| 1970-09-27 | vs HOU | 160 | L 7-10 | 75-85 | 5 | 6,159 | Steve Barber | Wade Blasingame | Jim Ray | Jim Nash | George Culver | 733 | 767 | -34 |
| 1970-09-29 | @ CIN | 161 | W 2-1 | 76-85 | 5 | 11,409 | Mike McQueen | Tony Cloninger | Mike McQueen | Tony Cloninger | | 735 | 768 | -33 |
| 1970-10-01 | @ CIN | 162 | L 1-4 | 76-86 | 5 | 23,861 | Pat Jarvis | Jim McGlothlin | Ray Washburn | Pat Jarvis | Don Gullett | 736 | 772 | -36 |