| 1970-04-07 | vs HOU | 1 | L 5-8 | 0-1 | 6 | 30,933 | Gaylord Perry | Larry Dierker | Larry Dierker | Gaylord Perry | Fred Gladding | 5 | 8 | -3 |
| 1970-04-08 | vs HOU | 2 | W 5-4 | 1-1 | 5 | 4,399 | Mike McCormick | Denny Lemaster | Don McMahon | Jack DiLauro | Frank Linzy | 10 | 12 | -2 |
| 1970-04-09 | vs HOU | 3 | W 7-4 | 2-1 | 3 | 2,810 | Frank Reberger | Jim Ray | Ron Bryant | Jack DiLauro | Don McMahon | 17 | 16 | 1 |
| 1970-04-10 | vs CIN | 4 | W 4-3 | 3-1 | 3 | 6,989 | Rich Robertson | Ray Washburn | Frank Linzy | Wayne Granger | | 21 | 19 | 2 |
| 1970-04-11 | vs CIN | 5 | W 2-1 | 4-1 | 1 | 8,535 | Gaylord Perry | Jim Merritt | Gaylord Perry | Jim Merritt | | 23 | 20 | 3 |
| 1970-04-12 | vs CIN | 6 | L 5-6 | 4-3 | 2 | 0 | Mike McCormick | Jim Maloney | Tony Cloninger | Mike McCormick | Wayne Granger | 28 | 26 | 2 |
| 1970-04-12 | vs CIN | 7 | L 2-5 | 4-3 | 2 | 31,731 | Ron Bryant | Gary Nolan | Gary Nolan | Ron Bryant | Wayne Granger | 30 | 31 | -1 |
| 1970-04-13 | @ ATL | 8 | L 3-9 | 4-4 | 4 | 37,181 | Frank Reberger | Pat Jarvis | Pat Jarvis | Frank Reberger | Bob Priddy | 33 | 40 | -7 |
| 1970-04-14 | @ ATL | 9 | W 15-11 | 5-4 | 2 | 11,350 | Rich Robertson | Jim Nash | Don McMahon | Gary Neibauer | | 48 | 51 | -3 |
| 1970-04-15 | @ HOU | 10 | L 6-7 | 5-5 | 3 | 11,174 | Gaylord Perry | Tom Griffin | Fred Gladding | Ron Bryant | | 54 | 58 | -4 |
| 1970-04-16 | @ HOU | 11 | W 11-9 | 6-5 | 2 | 10,814 | Mike McCormick | Jim Bouton | Ron Bryant | Dan Osinski | | 65 | 67 | -2 |
| 1970-04-17 | @ CIN | 12 | L 5-8 | 6-6 | 3 | 22,094 | Rich Robertson | Gary Nolan | Wayne Granger | Don McMahon | | 70 | 75 | -5 |
| 1970-04-18 | @ CIN | 13 | W 16-9 | 7-6 | 2 | 9,018 | Frank Reberger | Jim McGlothlin | Jim Johnson | Tony Cloninger | Mike McCormick | 86 | 84 | 2 |
| 1970-04-19 | @ CIN | 14 | L 0-6 | 7-7 | 3 | 31,569 | Gaylord Perry | Wayne Simpson | Wayne Simpson | Gaylord Perry | | 86 | 90 | -4 |
| 1970-04-22 | @ PHI | 15 | L 1-6 | 7-8 | 2 | 6,045 | Rich Robertson | Woodie Fryman | Woodie Fryman | Rich Robertson | Dick Selma | 87 | 96 | -9 |
| 1970-04-24 | vs MON | 16 | W 12-3 | 8-8 | 3 | 4,600 | Gaylord Perry | Gary Waslewski | Gaylord Perry | Dan McGinn | | 99 | 99 | 0 |
| 1970-04-25 | vs MON | 17 | L 3-7 | 8-9 | 3 | 27,966 | Juan Marichal | Joe Sparma | Dan McGinn | Ron Bryant | Claude Raymond | 102 | 106 | -4 |
| 1970-04-26 | vs MON | 18 | W 11-1 | 9-10 | 3 | 0 | Mike McCormick | Bill Stoneman | Mike McCormick | Bill Stoneman | | 113 | 107 | 6 |
| 1970-04-26 | vs MON | 19 | L 2-3 | 9-10 | 3 | 9,943 | Rich Robertson | Carl Morton | Carl Morton | Rich Robertson | Claude Raymond | 115 | 110 | 5 |
| 1970-04-28 | vs NYN | 20 | L 2-5 | 9-11 | 2 | 8,253 | Gaylord Perry | Gary Gentry | Gary Gentry | Gaylord Perry | Tug McGraw | 117 | 115 | 2 |
| 1970-04-29 | vs NYN | 21 | W 8-6 | 10-11 | 2 | 6,139 | Juan Marichal | Jerry Koosman | Frank Linzy | Ron Taylor | Don McMahon | 125 | 121 | 4 |
| 1970-04-30 | vs NYN | 22 | L 1-4 | 10-12 | 4 | 5,149 | Mike McCormick | Nolan Ryan | Nolan Ryan | Mike McCormick | | 126 | 125 | 1 |
| 1970-05-01 | vs PHI | 23 | W 3-1 | 11-12 | 3 | 5,328 | Rich Robertson | Jim Bunning | Rich Robertson | Jim Bunning | | 129 | 126 | 3 |
| 1970-05-02 | vs PHI | 24 | W 7-1 | 12-12 | 4 | 7,422 | Gaylord Perry | Chris Short | Gaylord Perry | Chris Short | | 136 | 127 | 9 |
| 1970-05-03 | vs PHI | 25 | L 6-8 | 12-14 | 4 | 0 | Mike McCormick | Rick Wise | Joe Hoerner | Ron Bryant | | 142 | 135 | 7 |
| 1970-05-03 | vs PHI | 26 | L 6-13 | 12-14 | 4 | 17,153 | Migel Puente | Woodie Fryman | Lowell Palmer | Frank Reberger | | 148 | 148 | 0 |
| 1970-05-05 | @ MON | 27 | W 4-1 | 13-14 | 4 | 9,513 | Rich Robertson | Bill Stoneman | Rich Robertson | Bill Stoneman | | 152 | 149 | 3 |
| 1970-05-07 | @ MON | 28 | L 8-15 | 13-15 | 4 | 6,505 | Gaylord Perry | Carl Morton | Carl Morton | Gaylord Perry | Claude Raymond | 160 | 164 | -4 |
| 1970-05-08 | @ NYN | 29 | W 7-1 | 14-15 | 4 | 43,109 | Migel Puente | Gary Gentry | Migel Puente | Gary Gentry | | 167 | 165 | 2 |
| 1970-05-09 | @ NYN | 30 | L 5-14 | 14-16 | 4 | 41,655 | Rich Robertson | Jerry Koosman | Jerry Koosman | Frank Linzy | Ron Taylor | 172 | 179 | -7 |
| 1970-05-10 | @ NYN | 31 | W 11-7 | 15-16 | 4 | 36,018 | Juan Marichal | Nolan Ryan | Juan Marichal | Nolan Ryan | | 183 | 186 | -3 |
| 1970-05-11 | @ SDN | 32 | W 6-5 | 16-16 | 4 | 9,064 | Gaylord Perry | Pat Dobson | Gaylord Perry | Gary Ross | Mike McCormick | 189 | 191 | -2 |
| 1970-05-12 | @ SDN | 33 | L 5-6 | 16-17 | 4 | 7,716 | Migel Puente | Mike Corkins | Mike Corkins | Migel Puente | Tom Dukes | 194 | 197 | -3 |
| 1970-05-13 | @ SDN | 34 | W 5-1 | 17-17 | 4 | 7,447 | Rich Robertson | Danny Coombs | Rich Robertson | Danny Coombs | | 199 | 198 | 1 |
| 1970-05-14 | @ LAN | 35 | L 3-6 | 17-18 | 5 | 21,828 | Juan Marichal | Sandy Vance | Sandy Vance | Juan Marichal | Jim Brewer | 202 | 204 | -2 |
| 1970-05-15 | @ LAN | 36 | L 5-11 | 17-19 | 5 | 32,603 | Migel Puente | Don Sutton | Don Sutton | Migel Puente | Jim Brewer | 207 | 215 | -8 |
| 1970-05-16 | @ LAN | 37 | W 5-4 | 18-19 | 5 | 42,241 | Gaylord Perry | Alan Foster | Gaylord Perry | Alan Foster | Frank Reberger | 212 | 219 | -7 |
| 1970-05-17 | @ LAN | 38 | L 0-8 | 18-20 | 5 | 28,122 | Rich Robertson | Claude Osteen | Claude Osteen | Rich Robertson | | 212 | 227 | -15 |
| 1970-05-19 | vs ATL | 39 | L 2-4 | 18-21 | 5 | 5,254 | Juan Marichal | Milt Pappas | Milt Pappas | Juan Marichal | | 214 | 231 | -17 |
| 1970-05-20 | vs ATL | 40 | L 1-6 | 18-22 | 5 | 4,192 | Gaylord Perry | Jim Nash | Hoyt Wilhelm | Gaylord Perry | | 215 | 237 | -22 |
| 1970-05-22 | vs SDN | 41 | W 9-4 | 19-22 | 4 | 4,334 | Rich Robertson | Mike Corkins | Rich Robertson | Mike Corkins | | 224 | 241 | -17 |
| 1970-05-23 | vs SDN | 42 | L 16-17 | 19-23 | 4 | 15,536 | Juan Marichal | Clay Kirby | Danny Coombs | Migel Puente | | 240 | 258 | -18 |
| 1970-05-24 | vs SDN | 43 | W 6-1 | 21-23 | 4 | 0 | Gaylord Perry | Ron Herbel | Gaylord Perry | Ron Herbel | | 246 | 259 | -13 |
| 1970-05-24 | vs SDN | 44 | W 7-6 | 21-23 | 4 | 11,803 | Mike McCormick | Pat Dobson | Mike McCormick | Pat Dobson | Frank Reberger | 253 | 265 | -12 |
| 1970-05-26 | vs LAN | 45 | L 3-19 | 21-24 | 4 | 7,428 | Rich Robertson | Claude Osteen | Claude Osteen | Rich Robertson | | 256 | 284 | -28 |
| 1970-05-27 | vs LAN | 46 | W 11-3 | 22-24 | 4 | 7,641 | Juan Marichal | Sandy Vance | Juan Marichal | Sandy Vance | | 267 | 287 | -20 |
| 1970-05-28 | vs LAN | 47 | W 4-3 | 23-24 | 4 | 7,876 | Gaylord Perry | Don Sutton | Gaylord Perry | Jim Brewer | | 271 | 290 | -19 |
| 1970-05-29 | @ PIT | 48 | L 3-6 | 23-25 | 4 | 11,497 | Rich Robertson | Bob Veale | Bob Veale | Rich Robertson | Dave Giusti | 274 | 296 | -22 |
| 1970-05-30 | @ PIT | 49 | W 13-11 | 24-25 | 4 | 10,658 | Mike McCormick | Steve Blass | Ron Bryant | Steve Blass | Bill Faul | 287 | 307 | -20 |
| 1970-05-31 | @ PIT | 50 | L 3-7 | 24-26 | 4 | 9,515 | Juan Marichal | Bob Moose | Bob Moose | Juan Marichal | Dave Giusti | 290 | 314 | -24 |
| 1970-06-02 | @ SLN | 51 | L 1-12 | 24-27 | 4 | 11,111 | Gaylord Perry | Steve Carlton | Steve Carlton | Gaylord Perry | | 291 | 326 | -35 |
| 1970-06-03 | @ SLN | 52 | L 5-6 | 24-28 | 4 | 11,808 | Rich Robertson | Bob Gibson | Bob Gibson | Frank Reberger | | 296 | 332 | -36 |
| 1970-06-05 | @ CHN | 53 | L 8-12 | 24-29 | 5 | 21,961 | Juan Marichal | Fergie Jenkins | Fergie Jenkins | Juan Marichal | Jim Colborn | 304 | 344 | -40 |
| 1970-06-06 | @ CHN | 54 | W 5-3 | 25-29 | 4 | 33,776 | Gaylord Perry | Bill Hands | Gaylord Perry | Bill Hands | | 309 | 347 | -38 |
| 1970-06-07 | @ CHN | 55 | L 4-8 | 25-30 | 4 | 31,694 | Rich Robertson | Ken Holtzman | Phil Regan | Mike Davison | | 313 | 355 | -42 |
| 1970-06-09 | vs PIT | 56 | L 1-5 | 25-31 | 4 | 4,250 | Juan Marichal | Steve Blass | Steve Blass | Juan Marichal | | 314 | 360 | -46 |
| 1970-06-10 | vs PIT | 57 | W 4-2 | 26-31 | 4 | 3,732 | Gaylord Perry | Bob Moose | Gaylord Perry | Bob Moose | | 318 | 362 | -44 |
| 1970-06-12 | vs SLN | 58 | L 1-4 | 26-32 | 4 | 8,634 | Skip Pitlock | Bob Gibson | Bob Gibson | Skip Pitlock | | 319 | 366 | -47 |
| 1970-06-13 | vs SLN | 59 | W 6-5 | 27-32 | 4 | 15,651 | Rich Robertson | Nelson Briles | Don McMahon | Sal Campisi | | 325 | 371 | -46 |
| 1970-06-14 | vs SLN | 60 | W 7-4 | 28-32 | 4 | 13,955 | Juan Marichal | Chuck Taylor | Juan Marichal | Chuck Taylor | | 332 | 375 | -43 |
| 1970-06-16 | vs CHN | 61 | W 3-2 | 29-32 | 4 | 7,207 | Gaylord Perry | Bill Hands | Gaylord Perry | Bill Hands | | 335 | 377 | -42 |
| 1970-06-17 | vs CHN | 62 | L 1-6 | 29-33 | 4 | 5,859 | Skip Pitlock | Ken Holtzman | Ken Holtzman | Skip Pitlock | | 336 | 383 | -47 |
| 1970-06-18 | vs CHN | 63 | L 0-6 | 29-34 | 4 | 6,340 | Rich Robertson | Fergie Jenkins | Fergie Jenkins | Rich Robertson | | 336 | 389 | -53 |
| 1970-06-19 | @ SDN | 64 | L 3-6 | 29-35 | 4 | 16,061 | Juan Marichal | Al Santorini | Ron Herbel | Juan Marichal | Ron Willis | 339 | 395 | -56 |
| 1970-06-20 | @ SDN | 65 | W 7-1 | 30-35 | 4 | 13,977 | Gaylord Perry | Clay Kirby | Gaylord Perry | Clay Kirby | | 346 | 396 | -50 |
| 1970-06-21 | @ SDN | 66 | W 7-2 | 31-35 | 4 | 14,756 | Skip Pitlock | Pat Dobson | Frank Reberger | Pat Dobson | Don McMahon | 353 | 398 | -45 |
| 1970-06-22 | @ CIN | 67 | W 13-6 | 32-35 | 4 | 17,034 | Rich Robertson | Don Gullett | Rich Robertson | Don Gullett | | 366 | 404 | -38 |
| 1970-06-23 | @ CIN | 68 | L 3-5 | 32-36 | 4 | 17,529 | Mike McCormick | Gary Nolan | Gary Nolan | Mike McCormick | Clay Carroll | 369 | 409 | -40 |
| 1970-06-24 | @ CIN | 69 | L 4-5 | 32-37 | 4 | 28,027 | Juan Marichal | Jim McGlothlin | Wayne Granger | Juan Marichal | | 373 | 414 | -41 |
| 1970-06-26 | vs ATL | 70 | W 4-1 | 33-37 | 4 | 7,790 | Gaylord Perry | Ron Reed | Gaylord Perry | Ron Reed | | 377 | 415 | -38 |
| 1970-06-27 | vs ATL | 71 | W 3-0 | 34-37 | 4 | 10,644 | Skip Pitlock | George Stone | Skip Pitlock | George Stone | Don McMahon | 380 | 415 | -35 |
| 1970-06-28 | vs ATL | 72 | W 6-4 | 36-37 | 4 | 0 | Juan Marichal | Jim Nash | Don McMahon | Bob Priddy | | 386 | 419 | -33 |
| 1970-06-28 | vs ATL | 73 | W 4-3 | 36-37 | 4 | 20,642 | Rich Robertson | Phil Niekro | Rich Robertson | Phil Niekro | Don McMahon | 390 | 422 | -32 |
| 1970-06-30 | vs SDN | 74 | L 2-3 | 36-38 | 4 | 4,607 | Gaylord Perry | Danny Coombs | Danny Coombs | Gaylord Perry | Ron Willis | 392 | 425 | -33 |
| 1970-07-01 | vs SDN | 75 | W 12-7 | 37-38 | 4 | 4,155 | Mike McCormick | Al Santorini | Mike McCormick | Al Santorini | Don McMahon | 404 | 432 | -28 |
| 1970-07-03 | vs LAN | 76 | L 6-8 | 37-39 | 4 | 25,330 | Juan Marichal | Don Sutton | Jim Brewer | Mike Davison | | 410 | 440 | -30 |
| 1970-07-04 | vs LAN | 77 | L 2-7 | 37-40 | 4 | 17,443 | Gaylord Perry | Alan Foster | Alan Foster | Gaylord Perry | | 412 | 447 | -35 |
| 1970-07-05 | vs LAN | 78 | L 0-4 | 37-41 | 4 | 16,253 | Mike McCormick | Bill Singer | Bill Singer | Mike McCormick | | 412 | 451 | -39 |
| 1970-07-06 | @ ATL | 79 | L 4-12 | 37-42 | 4 | 10,918 | Jerry Johnson | George Stone | George Stone | Jerry Johnson | | 416 | 463 | -47 |
| 1970-07-07 | @ ATL | 80 | W 8-5 | 38-42 | 4 | 12,158 | Rich Robertson | Jim Nash | Jerry Johnson | Bob Priddy | Don McMahon | 424 | 468 | -44 |
| 1970-07-08 | @ ATL | 81 | W 13-0 | 39-42 | 4 | 10,629 | Gaylord Perry | Phil Niekro | Gaylord Perry | Phil Niekro | | 437 | 468 | -31 |
| 1970-07-09 | @ ATL | 82 | W 7-6 | 40-42 | 4 | 11,026 | Juan Marichal | Pat Jarvis | Don McMahon | Bob Priddy | | 444 | 474 | -30 |
| 1970-07-10 | @ HOU | 83 | W 8-5 | 41-42 | 4 | 17,770 | Frank Reberger | Denny Lemaster | Frank Reberger | Denny Lemaster | Jerry Johnson | 452 | 479 | -27 |
| 1970-07-11 | @ HOU | 84 | L 4-5 | 41-43 | 4 | 27,208 | Rich Robertson | Larry Dierker | Jim Bouton | Mike Davison | | 456 | 484 | -28 |
| 1970-07-12 | @ HOU | 85 | L 7-8 | 41-44 | 4 | 25,003 | Gaylord Perry | Tom Griffin | Jim Ray | Don McMahon | | 463 | 492 | -29 |
| 1970-07-17 | vs MON | 86 | L 3-7 | 41-45 | 4 | 11,543 | Juan Marichal | Carl Morton | Carl Morton | Juan Marichal | Claude Raymond | 466 | 499 | -33 |
| 1970-07-18 | vs MON | 87 | W 10-1 | 42-45 | 4 | 28,879 | Gaylord Perry | Mike Wegener | Gaylord Perry | Mike Wegener | | 476 | 500 | -24 |
| 1970-07-19 | vs NYN | 88 | W 5-3 | 43-46 | 4 | 0 | Rich Robertson | Nolan Ryan | Don McMahon | Ron Taylor | | 481 | 503 | -22 |
| 1970-07-19 | vs NYN | 89 | L 6-7 | 43-46 | 4 | 30,303 | Skip Pitlock | Jerry Koosman | Ron Taylor | Don McMahon | | 487 | 510 | -23 |
| 1970-07-20 | vs NYN | 90 | W 7-4 | 44-46 | 4 | 7,815 | Frank Reberger | Rich Folkers | Mike Davison | Rich Folkers | Don McMahon | 494 | 514 | -20 |
| 1970-07-21 | vs PHI | 91 | L 6-9 | 44-47 | 4 | 3,418 | Juan Marichal | Rick Wise | Rick Wise | Juan Marichal | Joe Hoerner | 500 | 523 | -23 |
| 1970-07-22 | vs PHI | 92 | L 2-5 | 44-48 | 4 | 4,567 | Gaylord Perry | Jim Bunning | Jim Bunning | Gaylord Perry | Dick Selma | 502 | 528 | -26 |
| 1970-07-24 | @ MON | 93 | W 8-7 | 45-49 | 4 | 0 | Rich Robertson | Steve Renko | Mike Davison | Steve Renko | Don McMahon | 510 | 535 | -25 |
| 1970-07-24 | @ MON | 94 | L 5-7 | 45-49 | 4 | 28,307 | Skip Pitlock | Mike Wegener | Howie Reed | Skip Pitlock | Claude Raymond | 515 | 542 | -27 |
| 1970-07-25 | @ MON | 95 | L 5-10 | 45-50 | 4 | 25,287 | Frank Reberger | Carl Morton | Carl Morton | Frank Reberger | | 520 | 552 | -32 |
| 1970-07-26 | @ MON | 96 | W 6-2 | 46-50 | 4 | 18,705 | Juan Marichal | Mike Marshall | Juan Marichal | Mike Marshall | | 526 | 554 | -28 |
| 1970-07-27 | @ NYN | 97 | L 3-5 | 46-51 | 4 | 51,061 | Gaylord Perry | Tom Seaver | Tom Seaver | Gaylord Perry | | 529 | 559 | -30 |
| 1970-07-28 | @ NYN | 98 | L 2-12 | 46-52 | 4 | 50,174 | Rich Robertson | Jim McAndrew | Jim McAndrew | Rich Robertson | | 531 | 571 | -40 |
| 1970-07-29 | @ NYN | 99 | W 4-2 | 47-52 | 4 | 43,029 | Skip Pitlock | Jerry Koosman | Skip Pitlock | Rich Folkers | Don McMahon | 535 | 573 | -38 |
| 1970-07-31 | @ PHI | 100 | W 8-3 | 49-52 | 4 | 0 | Juan Marichal | Grant Jackson | Juan Marichal | Grant Jackson | | 543 | 576 | -33 |
| 1970-07-31 | @ PHI | 101 | W 7-2 | 49-52 | 4 | 15,716 | Frank Reberger | Chris Short | Frank Reberger | Chris Short | Don McMahon | 550 | 578 | -28 |
| 1970-08-01 | @ PHI | 102 | L 5-6 | 49-54 | 4 | 0 | Gaylord Perry | Jim Bunning | Dick Selma | Jerry Johnson | | 555 | 584 | -29 |
| 1970-08-01 | @ PHI | 103 | L 1-6 | 49-54 | 4 | 18,010 | Don Carrithers | Rick Wise | Rick Wise | Don Carrithers | Barry Lersch | 556 | 590 | -34 |
| 1970-08-02 | @ PHI | 104 | L 6-7 | 49-55 | 4 | 10,201 | Ron Bryant | Lowell Palmer | Fred Wenz | Mike Davison | | 562 | 597 | -35 |
| 1970-08-03 | @ LAN | 105 | W 5-2 | 50-55 | 4 | 24,473 | Skip Pitlock | Bill Singer | Skip Pitlock | Bill Singer | | 567 | 599 | -32 |
| 1970-08-04 | @ LAN | 106 | W 11-4 | 51-55 | 4 | 30,355 | Juan Marichal | Don Sutton | Juan Marichal | Don Sutton | | 578 | 603 | -25 |
| 1970-08-05 | vs CIN | 107 | W 5-3 | 52-55 | 3 | 11,798 | Gaylord Perry | Jim McGlothlin | Gaylord Perry | Jim McGlothlin | | 583 | 606 | -23 |
| 1970-08-06 | vs CIN | 108 | W 9-3 | 53-55 | 3 | 10,979 | Frank Reberger | Ray Washburn | Frank Reberger | Ray Washburn | | 592 | 609 | -17 |
| 1970-08-07 | vs HOU | 109 | L 2-11 | 53-56 | 3 | 5,394 | Ron Bryant | Larry Dierker | Larry Dierker | Ron Bryant | | 594 | 620 | -26 |
| 1970-08-08 | vs HOU | 110 | W 6-5 | 54-56 | 3 | 8,023 | Skip Pitlock | Wade Blasingame | Don McMahon | George Culver | | 600 | 625 | -25 |
| 1970-08-09 | vs HOU | 111 | L 5-7 | 55-57 | 3 | 0 | Juan Marichal | Ron Cook | Jack DiLauro | Rich Robertson | | 605 | 632 | -27 |
| 1970-08-09 | vs HOU | 112 | W 6-1 | 55-57 | 3 | 14,540 | Gaylord Perry | Don Wilson | Gaylord Perry | Tom Griffin | | 611 | 633 | -22 |
| 1970-08-11 | @ CHN | 113 | L 1-4 | 55-58 | 3 | 33,931 | Frank Reberger | Fergie Jenkins | Fergie Jenkins | Frank Reberger | | 612 | 637 | -25 |
| 1970-08-12 | @ CHN | 114 | W 6-3 | 56-58 | 3 | 32,462 | Ron Bryant | Bill Hands | Don Carrithers | Bill Hands | Don McMahon | 618 | 640 | -22 |
| 1970-08-13 | @ CHN | 115 | L 3-6 | 56-59 | 4 | 24,206 | Gaylord Perry | Milt Pappas | Milt Pappas | Gaylord Perry | | 621 | 646 | -25 |
| 1970-08-14 | @ SLN | 116 | L 1-2 | 57-60 | 4 | 0 | Juan Marichal | Steve Carlton | Chuck Taylor | Don McMahon | | 622 | 648 | -26 |
| 1970-08-14 | @ SLN | 117 | W 5-4 | 57-60 | 4 | 36,349 | Skip Pitlock | Jerry Reuss | Don McMahon | Tom Hilgendorf | Mike Davison | 627 | 652 | -25 |
| 1970-08-15 | @ SLN | 118 | W 3-2 | 58-60 | 4 | 35,835 | Frank Reberger | Nelson Briles | Don Carrithers | Nelson Briles | Jerry Johnson | 630 | 654 | -24 |
| 1970-08-16 | @ SLN | 119 | W 5-2 | 59-60 | 3 | 28,093 | Ron Bryant | Harry Parker | Ron Bryant | Reggie Cleveland | Jerry Johnson | 635 | 656 | -21 |
| 1970-08-17 | @ PIT | 120 | W 5-4 | 60-60 | 3 | 21,148 | Gaylord Perry | Bob Moose | Gaylord Perry | Bruce Dal Canton | | 640 | 660 | -20 |
| 1970-08-18 | @ PIT | 121 | L 2-6 | 60-61 | 4 | 25,325 | Skip Pitlock | Steve Blass | Steve Blass | Skip Pitlock | Dave Giusti | 642 | 666 | -24 |
| 1970-08-19 | @ PIT | 122 | W 7-4 | 61-61 | 4 | 24,655 | Juan Marichal | Luke Walker | Juan Marichal | Luke Walker | | 649 | 670 | -21 |
| 1970-08-21 | vs CHN | 123 | W 5-1 | 62-61 | 3 | 7,086 | Frank Reberger | Bill Hands | Frank Reberger | Bill Hands | | 654 | 671 | -17 |
| 1970-08-22 | vs CHN | 124 | L 0-15 | 62-62 | 3 | 11,046 | Gaylord Perry | Ken Holtzman | Ken Holtzman | Gaylord Perry | | 654 | 686 | -32 |
| 1970-08-23 | vs CHN | 125 | W 4-3 | 63-62 | 3 | 12,222 | Juan Marichal | Milt Pappas | Juan Marichal | Milt Pappas | | 658 | 689 | -31 |
| 1970-08-25 | vs SLN | 126 | W 4-2 | 64-62 | 3 | 5,025 | Skip Pitlock | Steve Carlton | Skip Pitlock | Steve Carlton | Don McMahon | 662 | 691 | -29 |
| 1970-08-26 | vs SLN | 127 | W 8-7 | 65-62 | 3 | 5,643 | Frank Reberger | Nelson Briles | Mike Davison | Tom Hilgendorf | | 670 | 698 | -28 |
| 1970-08-27 | vs SLN | 128 | L 1-4 | 65-63 | 3 | 6,317 | Gaylord Perry | Bob Gibson | Bob Gibson | Gaylord Perry | | 671 | 702 | -31 |
| 1970-08-28 | vs PIT | 129 | W 5-1 | 66-63 | 3 | 6,174 | Juan Marichal | Bob Moose | Juan Marichal | Bob Moose | | 676 | 703 | -27 |
| 1970-08-29 | vs PIT | 130 | W 10-9 | 67-63 | 3 | 8,188 | Skip Pitlock | Steve Blass | Don McMahon | Bruce Dal Canton | | 686 | 712 | -26 |
| 1970-08-30 | vs PIT | 131 | W 7-3 | 69-63 | 3 | 0 | Frank Reberger | Luke Walker | Jerry Johnson | Luke Walker | Rich Robertson | 693 | 715 | -22 |
| 1970-08-30 | vs PIT | 132 | W 2-1 | 69-63 | 3 | 15,963 | Ron Bryant | Fred Cambria | Ron Bryant | Dave Giusti | | 695 | 716 | -21 |
| 1970-09-01 | @ CIN | 133 | W 5-3 | 70-63 | 3 | 25,850 | Gaylord Perry | Jim McGlothlin | Gaylord Perry | Clay Carroll | | 700 | 719 | -19 |
| 1970-09-02 | @ CIN | 134 | L 0-2 | 70-64 | 3 | 23,282 | Juan Marichal | Gary Nolan | Gary Nolan | Juan Marichal | Wayne Granger | 700 | 721 | -21 |
| 1970-09-03 | @ CIN | 135 | L 3-7 | 70-65 | 3 | 20,520 | Skip Pitlock | Tony Cloninger | Tony Cloninger | Skip Pitlock | Clay Carroll | 703 | 728 | -25 |
| 1970-09-05 | @ ATL | 136 | L 2-5 | 70-67 | 3 | 0 | Ron Bryant | Phil Niekro | Phil Niekro | Jerry Johnson | | 705 | 733 | -28 |
| 1970-09-05 | @ ATL | 137 | L 3-5 | 70-67 | 3 | 13,820 | Rich Robertson | Mike McQueen | Don Cardwell | Rich Robertson | Hoyt Wilhelm | 708 | 738 | -30 |
| 1970-09-06 | @ ATL | 138 | W 1-0 | 71-67 | 3 | 11,418 | Gaylord Perry | Ron Reed | Gaylord Perry | Ron Reed | | 709 | 738 | -29 |
| 1970-09-07 | vs CIN | 139 | W 6-3 | 73-67 | 3 | 0 | Juan Marichal | Gary Nolan | Juan Marichal | Gary Nolan | | 715 | 741 | -26 |
| 1970-09-07 | vs CIN | 140 | W 4-3 | 73-67 | 3 | 22,362 | Don Carrithers | Tony Cloninger | John Cumberland | Clay Carroll | Don McMahon | 719 | 744 | -25 |
| 1970-09-08 | vs CIN | 141 | L 2-5 | 73-68 | 3 | 6,046 | Frank Reberger | Jim Merritt | Ray Washburn | Frank Reberger | Wayne Granger | 721 | 749 | -28 |
| 1970-09-09 | vs HOU | 142 | W 9-5 | 74-68 | 3 | 3,180 | Ron Bryant | Larry Dierker | Jerry Johnson | Larry Dierker | Don McMahon | 730 | 754 | -24 |
| 1970-09-10 | vs HOU | 143 | W 11-0 | 75-68 | 3 | 2,449 | Gaylord Perry | Wade Blasingame | Gaylord Perry | Wade Blasingame | | 741 | 754 | -13 |
| 1970-09-11 | vs LAN | 144 | W 4-3 | 76-68 | 3 | 8,574 | Juan Marichal | Don Sutton | Juan Marichal | Don Sutton | Don McMahon | 745 | 757 | -12 |
| 1970-09-12 | vs LAN | 145 | W 8-3 | 77-68 | 3 | 10,573 | Skip Pitlock | Alan Foster | Skip Pitlock | Alan Foster | Don McMahon | 753 | 760 | -7 |
| 1970-09-13 | vs LAN | 146 | L 3-5 | 77-69 | 3 | 14,926 | Ron Bryant | Sandy Vance | Jim Brewer | Ron Bryant | Joe Moeller | 756 | 765 | -9 |
| 1970-09-14 | vs ATL | 147 | W 7-5 | 78-69 | 3 | 2,735 | Frank Reberger | Mike McQueen | Frank Reberger | Mike McQueen | Don McMahon | 763 | 770 | -7 |
| 1970-09-15 | vs ATL | 148 | W 8-0 | 79-69 | 3 | 2,861 | Gaylord Perry | Ron Reed | Gaylord Perry | Ron Reed | | 771 | 770 | 1 |
| 1970-09-16 | vs ATL | 149 | L 7-10 | 79-70 | 3 | 3,166 | Juan Marichal | Jim Nash | Phil Niekro | Jerry Johnson | | 778 | 780 | -2 |
| 1970-09-17 | @ SDN | 150 | W 4-3 | 80-70 | 3 | 3,332 | Rich Robertson | Pat Dobson | Rich Robertson | Pat Dobson | Don McMahon | 782 | 783 | -1 |
| 1970-09-18 | @ SDN | 151 | W 3-2 | 81-70 | 3 | 5,093 | Frank Reberger | Danny Coombs | Frank Reberger | Danny Coombs | | 785 | 785 | 0 |
| 1970-09-19 | @ SDN | 152 | W 3-0 | 82-70 | 3 | 6,259 | Gaylord Perry | Clay Kirby | Gaylord Perry | Clay Kirby | | 788 | 785 | 3 |
| 1970-09-21 | @ LAN | 153 | W 7-0 | 83-70 | 3 | 14,478 | Juan Marichal | Joe Moeller | Juan Marichal | Joe Moeller | | 795 | 785 | 10 |
| 1970-09-22 | @ LAN | 154 | L 0-1 | 83-71 | 3 | 15,502 | Ron Bryant | Alan Foster | Alan Foster | Ron Bryant | | 795 | 786 | 9 |
| 1970-09-23 | @ LAN | 155 | W 14-10 | 84-71 | 3 | 19,508 | Gaylord Perry | Sandy Vance | Rich Robertson | Ray Lamb | | 809 | 796 | 13 |
| 1970-09-25 | vs SDN | 156 | L 4-7 | 84-72 | 3 | 4,314 | Frank Reberger | Pat Dobson | Pat Dobson | Frank Reberger | Tom Dukes | 813 | 803 | 10 |
| 1970-09-26 | vs SDN | 157 | W 7-6 | 85-72 | 3 | 5,057 | Juan Marichal | Clay Kirby | John Cumberland | Paul Doyle | | 820 | 809 | 11 |
| 1970-09-27 | vs SDN | 158 | W 3-2 | 86-72 | 2 | 25,332 | Gaylord Perry | Danny Coombs | Gaylord Perry | Danny Coombs | | 823 | 811 | 12 |
| 1970-09-28 | @ HOU | 159 | L 0-3 | 86-73 | 2 | 6,160 | Ron Bryant | Jack Billingham | Jack Billingham | Ron Bryant | | 823 | 814 | 9 |
| 1970-09-29 | @ HOU | 160 | L 1-3 | 86-74 | 3 | 6,768 | Frank Reberger | Don Wilson | Don Wilson | Frank Reberger | Denny Lemaster | 824 | 817 | 7 |
| 1970-09-30 | @ HOU | 161 | L 3-4 | 86-75 | 3 | 8,673 | Juan Marichal | Larry Dierker | Larry Dierker | Don McMahon | | 827 | 821 | 6 |
| 1970-10-01 | @ HOU | 162 | L 4-5 | 86-76 | 3 | 9,018 | Gaylord Perry | Wade Blasingame | Fred Gladding | Mike Davison | | 831 | 826 | 5 |