| 1970-04-07 | @ PIT | 1 | W 5-3 | 1-0 | 1 | 34,249 | Tom Seaver | Steve Blass | Ron Taylor | Chuck Hartenstein | Tug McGraw | 5 | 3 | 2 |
| 1970-04-09 | @ PIT | 2 | L 1-2 | 1-1 | 3 | 9,884 | Jerry Koosman | Dock Ellis | Dock Ellis | Jerry Koosman | | 6 | 5 | 1 |
| 1970-04-10 | @ SLN | 3 | L 3-7 | 1-2 | 4 | 45,960 | Jim McAndrew | George Culver | George Culver | Jim McAndrew | Chuck Taylor | 9 | 12 | -3 |
| 1970-04-11 | @ SLN | 4 | W 4-1 | 2-2 | 3 | 17,541 | Gary Gentry | Nelson Briles | Gary Gentry | Nelson Briles | Ron Taylor | 13 | 13 | 0 |
| 1970-04-12 | @ SLN | 5 | W 6-4 | 3-2 | 1 | 17,313 | Tom Seaver | Steve Carlton | Tom Seaver | Steve Carlton | Ron Taylor | 19 | 17 | 2 |
| 1970-04-14 | vs PIT | 6 | L 4-6 | 3-3 | 3 | 41,679 | Jerry Koosman | Dock Ellis | Chuck Hartenstein | Tug McGraw | | 23 | 23 | 0 |
| 1970-04-16 | vs PIT | 7 | L 4-7 | 3-4 | 4 | 8,623 | Gary Gentry | Bob Veale | Bruce Dal Canton | Don Cardwell | | 27 | 30 | -3 |
| 1970-04-17 | vs PHI | 8 | W 6-0 | 4-4 | 4 | 5,951 | Tom Seaver | Grant Jackson | Tom Seaver | Grant Jackson | | 33 | 30 | 3 |
| 1970-04-18 | vs PHI | 9 | W 7-0 | 5-4 | 3 | 23,500 | Nolan Ryan | Jim Bunning | Nolan Ryan | Jim Bunning | | 40 | 30 | 10 |
| 1970-04-19 | vs PHI | 10 | L 2-3 | 6-5 | 4 | 0 | Jerry Koosman | Rick Wise | Rick Wise | Jerry Koosman | | 42 | 33 | 9 |
| 1970-04-19 | vs PHI | 11 | W 10-2 | 6-5 | 4 | 49,898 | Jim McAndrew | Chris Short | Jim McAndrew | Chris Short | Ron Taylor | 52 | 35 | 17 |
| 1970-04-21 | vs SDN | 12 | L 3-5 | 6-6 | 4 | 7,712 | Gary Gentry | Clay Kirby | Ron Herbel | Cal Koonce | | 55 | 40 | 15 |
| 1970-04-22 | vs SDN | 13 | W 2-1 | 7-6 | 4 | 14,197 | Tom Seaver | Mike Corkins | Tom Seaver | Mike Corkins | | 57 | 41 | 16 |
| 1970-04-24 | @ LAN | 14 | L 0-1 | 7-7 | 4 | 22,551 | Jerry Koosman | Alan Foster | Ray Lamb | Ron Taylor | | 57 | 42 | 15 |
| 1970-04-25 | @ LAN | 15 | L 0-1 | 7-8 | 4 | 28,349 | Nolan Ryan | Claude Osteen | Claude Osteen | Nolan Ryan | | 57 | 43 | 14 |
| 1970-04-26 | @ LAN | 16 | W 3-1 | 8-8 | 4 | 26,708 | Tom Seaver | Sandy Vance | Tom Seaver | Sandy Vance | | 60 | 44 | 16 |
| 1970-04-28 | @ SFN | 17 | W 5-2 | 9-8 | 5 | 8,253 | Gary Gentry | Gaylord Perry | Gary Gentry | Gaylord Perry | Tug McGraw | 65 | 46 | 19 |
| 1970-04-29 | @ SFN | 18 | L 6-8 | 9-9 | 5 | 6,139 | Jerry Koosman | Juan Marichal | Frank Linzy | Ron Taylor | Don McMahon | 71 | 54 | 17 |
| 1970-04-30 | @ SFN | 19 | W 4-1 | 10-9 | 4 | 5,149 | Nolan Ryan | Mike McCormick | Nolan Ryan | Mike McCormick | | 75 | 55 | 20 |
| 1970-05-01 | @ SDN | 20 | W 2-1 | 11-9 | 2 | 18,176 | Tom Seaver | Al Santorini | Tom Seaver | Al Santorini | | 77 | 56 | 21 |
| 1970-05-02 | @ SDN | 21 | L 4-5 | 11-10 | 2 | 6,465 | Jim McAndrew | Clay Kirby | Clay Kirby | Jim McAndrew | Ron Herbel | 81 | 61 | 20 |
| 1970-05-03 | @ SDN | 22 | L 3-4 | 12-11 | 2 | 0 | Jerry Koosman | Mike Corkins | Dave Roberts | Cal Koonce | | 84 | 65 | 19 |
| 1970-05-03 | @ SDN | 23 | W 3-2 | 12-11 | 2 | 19,657 | Gary Gentry | Pat Dobson | Gary Gentry | Pat Dobson | Tug McGraw | 87 | 67 | 20 |
| 1970-05-05 | vs LAN | 24 | L 0-4 | 12-12 | 2 | 24,321 | Nolan Ryan | Sandy Vance | Sandy Vance | Nolan Ryan | Fred Norman | 87 | 71 | 16 |
| 1970-05-06 | vs LAN | 25 | W 5-4 | 13-12 | 2 | 18,027 | Tom Seaver | Don Sutton | Tom Seaver | Don Sutton | Ron Taylor | 92 | 75 | 17 |
| 1970-05-07 | vs LAN | 26 | L 4-7 | 13-13 | 2 | 16,552 | Ray Sadecki | Alan Foster | Ray Lamb | Jim McAndrew | | 96 | 82 | 14 |
| 1970-05-08 | vs SFN | 27 | L 1-7 | 13-14 | 2 | 43,109 | Gary Gentry | Migel Puente | Migel Puente | Gary Gentry | | 97 | 89 | 8 |
| 1970-05-09 | vs SFN | 28 | W 14-5 | 14-14 | 2 | 41,655 | Jerry Koosman | Rich Robertson | Jerry Koosman | Frank Linzy | Ron Taylor | 111 | 94 | 17 |
| 1970-05-10 | vs SFN | 29 | L 7-11 | 14-15 | 2 | 36,018 | Nolan Ryan | Juan Marichal | Juan Marichal | Nolan Ryan | | 118 | 105 | 13 |
| 1970-05-11 | vs MON | 30 | L 0-3 | 14-16 | 2 | 15,016 | Tom Seaver | Dan McGinn | Dan McGinn | Tom Seaver | | 118 | 108 | 10 |
| 1970-05-12 | vs MON | 31 | W 8-4 | 15-16 | 2 | 8,521 | Ray Sadecki | Carl Morton | Ray Sadecki | Carl Morton | Tug McGraw | 126 | 112 | 14 |
| 1970-05-13 | @ CHN | 32 | W 4-0 | 16-16 | 2 | 9,823 | Gary Gentry | Bill Hands | Gary Gentry | Bill Hands | | 130 | 112 | 18 |
| 1970-05-15 | @ PHI | 33 | W 4-0 | 17-16 | 2 | 6,373 | Tom Seaver | Woodie Fryman | Tom Seaver | Woodie Fryman | | 134 | 112 | 22 |
| 1970-05-16 | @ PHI | 34 | W 6-0 | 18-16 | 2 | 4,826 | Jerry Koosman | Grant Jackson | Jerry Koosman | Grant Jackson | | 140 | 112 | 28 |
| 1970-05-18 | @ MON | 35 | L 4-8 | 18-17 | 2 | 31,004 | Gary Gentry | Bill Stoneman | Claude Raymond | Tug McGraw | | 144 | 120 | 24 |
| 1970-05-19 | @ MON | 36 | W 7-4 | 19-17 | 2 | 20,324 | Ray Sadecki | Dan McGinn | Ray Sadecki | Dan McGinn | Tug McGraw | 151 | 124 | 27 |
| 1970-05-20 | @ MON | 37 | L 0-2 | 19-18 | 3 | 11,361 | Tom Seaver | Carl Morton | Carl Morton | Tom Seaver | | 151 | 126 | 25 |
| 1970-05-22 | vs CHN | 38 | L 4-6 | 19-19 | 3 | 50,586 | Jerry Koosman | Ken Holtzman | Jim Colborn | Jerry Koosman | | 155 | 132 | 23 |
| 1970-05-23 | vs CHN | 39 | L 8-14 | 19-20 | 3 | 35,500 | Gary Gentry | Fergie Jenkins | Fergie Jenkins | Gary Gentry | Phil Regan | 163 | 146 | 17 |
| 1970-05-24 | vs CHN | 40 | L 1-3 | 20-21 | 3 | 0 | Tom Seaver | Bill Hands | Bill Hands | Tom Seaver | Phil Regan | 164 | 149 | 15 |
| 1970-05-24 | vs CHN | 41 | W 3-1 | 20-21 | 3 | 53,284 | Nolan Ryan | Joe Decker | Nolan Ryan | Joe Decker | | 167 | 150 | 17 |
| 1970-05-26 | vs SLN | 42 | W 5-1 | 21-21 | 2 | 13,473 | Ray Sadecki | Mike Torrez | Ray Sadecki | Mike Torrez | | 172 | 151 | 21 |
| 1970-05-27 | vs SLN | 43 | W 3-0 | 22-21 | 2 | 28,597 | Gary Gentry | Steve Carlton | Gary Gentry | Steve Carlton | | 175 | 151 | 24 |
| 1970-05-28 | vs SLN | 44 | L 2-9 | 22-22 | 2 | 20,919 | Jim McAndrew | Bob Gibson | Bob Gibson | Jim McAndrew | | 177 | 160 | 17 |
| 1970-05-29 | vs HOU | 45 | L 0-5 | 22-23 | 2 | 35,753 | Tom Seaver | Tom Griffin | Jack Billingham | Tom Seaver | | 177 | 165 | 12 |
| 1970-05-30 | vs HOU | 46 | W 4-3 | 23-23 | 2 | 54,421 | Nolan Ryan | Larry Dierker | Nolan Ryan | Larry Dierker | Ron Taylor | 181 | 168 | 13 |
| 1970-05-31 | vs HOU | 47 | W 14-4 | 25-23 | 2 | 0 | Ray Sadecki | Denny Lemaster | Ray Sadecki | Denny Lemaster | Ron Taylor | 195 | 172 | 23 |
| 1970-05-31 | vs HOU | 48 | W 4-3 | 25-23 | 2 | 47,193 | Jim McAndrew | Don Wilson | Tug McGraw | Denny Lemaster | | 199 | 175 | 24 |
| 1970-06-02 | @ ATL | 49 | L 1-4 | 25-24 | 2 | 10,585 | Gary Gentry | Phil Niekro | Phil Niekro | Gary Gentry | | 200 | 179 | 21 |
| 1970-06-04 | @ ATL | 50 | L 1-3 | 25-25 | 2 | 19,809 | Tom Seaver | Pat Jarvis | Pat Jarvis | Tom Seaver | | 201 | 182 | 19 |
| 1970-06-05 | @ CIN | 51 | L 4-5 | 25-26 | 2 | 20,101 | Nolan Ryan | Jim McGlothlin | Jim McGlothlin | Nolan Ryan | Don Gullett | 205 | 187 | 18 |
| 1970-06-06 | @ CIN | 52 | L 1-5 | 25-27 | 3 | 25,266 | Ray Sadecki | Jim Merritt | Jim Merritt | Ray Sadecki | | 206 | 192 | 14 |
| 1970-06-07 | @ CIN | 53 | L 2-10 | 25-28 | 4 | 24,813 | Gary Gentry | Wayne Simpson | Wayne Simpson | Gary Gentry | | 208 | 202 | 6 |
| 1970-06-08 | @ HOU | 54 | W 2-0 | 26-28 | 3 | 13,957 | Jim McAndrew | Jack Billingham | Jim McAndrew | Jack Billingham | | 210 | 202 | 8 |
| 1970-06-09 | @ HOU | 55 | W 2-1 | 27-28 | 3 | 19,935 | Tom Seaver | Tom Griffin | Tom Seaver | Tom Griffin | | 212 | 203 | 9 |
| 1970-06-10 | @ HOU | 56 | L 3-5 | 27-29 | 3 | 17,973 | Nolan Ryan | Denny Lemaster | Denny Lemaster | Nolan Ryan | Fred Gladding | 215 | 208 | 7 |
| 1970-06-12 | vs ATL | 57 | W 8-1 | 28-29 | 3 | 46,710 | Gary Gentry | Phil Niekro | Gary Gentry | Phil Niekro | Ron Taylor | 223 | 209 | 14 |
| 1970-06-13 | vs ATL | 58 | W 4-1 | 29-29 | 2 | 41,515 | Ray Sadecki | Mike McQueen | Ray Sadecki | Mike McQueen | | 227 | 210 | 17 |
| 1970-06-14 | vs ATL | 59 | W 7-5 | 30-29 | 2 | 52,674 | Tom Seaver | Pat Jarvis | Tom Seaver | Pat Jarvis | | 234 | 215 | 19 |
| 1970-06-16 | vs CIN | 60 | W 8-1 | 31-29 | 2 | 34,260 | Jim McAndrew | Jim Merritt | Jim McAndrew | Jim Merritt | | 242 | 216 | 26 |
| 1970-06-17 | vs CIN | 61 | L 4-7 | 31-30 | 2 | 40,462 | Gary Gentry | Wayne Simpson | Clay Carroll | Ron Taylor | Wayne Granger | 246 | 223 | 23 |
| 1970-06-19 | vs PHI | 62 | W 13-3 | 32-30 | 2 | 43,866 | Tom Seaver | Jim Bunning | Tom Seaver | Jim Bunning | | 259 | 226 | 33 |
| 1970-06-20 | vs PHI | 63 | L 1-2 | 32-31 | 2 | 41,897 | Jerry Koosman | Chris Short | Chris Short | Jerry Koosman | | 260 | 228 | 32 |
| 1970-06-22 | @ CHN | 64 | W 9-5 | 33-31 | 2 | 24,867 | Gary Gentry | Fergie Jenkins | Ron Taylor | Fergie Jenkins | | 269 | 233 | 36 |
| 1970-06-23 | @ CHN | 65 | W 12-10 | 34-31 | 2 | 28,118 | Ray Sadecki | Joe Decker | Ron Taylor | Phil Regan | Jim McAndrew | 281 | 243 | 38 |
| 1970-06-24 | @ CHN | 66 | W 9-5 | 36-31 | 1 | 0 | Tom Seaver | Bill Hands | Tom Seaver | Bill Hands | | 290 | 248 | 42 |
| 1970-06-24 | @ CHN | 67 | W 6-1 | 36-31 | 1 | 35,071 | Nolan Ryan | Archie Reynolds | Nolan Ryan | Archie Reynolds | Tug McGraw | 296 | 249 | 47 |
| 1970-06-25 | @ CHN | 68 | W 8-3 | 37-31 | 1 | 28,015 | Jerry Koosman | Ken Holtzman | Jerry Koosman | Ken Holtzman | | 304 | 252 | 52 |
| 1970-06-26 | @ MON | 69 | L 5-6 | 37-32 | 1 | 21,012 | Jim McAndrew | Steve Renko | Steve Renko | Jim McAndrew | Claude Raymond | 309 | 258 | 51 |
| 1970-06-27 | @ MON | 70 | W 8-3 | 38-32 | 1 | 21,398 | Gary Gentry | Dan McGinn | Gary Gentry | Dan McGinn | | 317 | 261 | 56 |
| 1970-06-28 | @ MON | 71 | L 2-3 | 38-33 | 1 | 27,154 | Ray Sadecki | Carl Morton | Carl Morton | Ray Sadecki | | 319 | 264 | 55 |
| 1970-06-29 | vs PIT | 72 | W 3-2 | 39-33 | 1 | 42,416 | Tom Seaver | Steve Blass | Tom Seaver | Steve Blass | | 322 | 266 | 56 |
| 1970-06-30 | vs PIT | 73 | W 7-6 | 40-33 | 1 | 38,681 | Jerry Koosman | Bob Veale | Jerry Koosman | Bob Veale | Ron Taylor | 329 | 272 | 57 |
| 1970-07-01 | vs PIT | 74 | L 3-4 | 40-34 | 1 | 34,316 | Jim McAndrew | Dock Ellis | Dock Ellis | Jim McAndrew | Dave Giusti | 332 | 276 | 56 |
| 1970-07-02 | @ PHI | 75 | L 1-6 | 40-36 | 1 | 0 | Gary Gentry | Jim Bunning | Jim Bunning | Gary Gentry | Dick Selma | 333 | 282 | 51 |
| 1970-07-02 | @ PHI | 76 | L 2-3 | 40-36 | 1 | 24,474 | Don Cardwell | Chris Short | Chris Short | Don Cardwell | Dick Selma | 335 | 285 | 50 |
| 1970-07-03 | @ PHI | 77 | W 4-3 | 41-36 | 1 | 10,508 | Ray Sadecki | Rick Wise | Ray Sadecki | Rick Wise | Rich Folkers | 339 | 288 | 51 |
| 1970-07-04 | @ PHI | 78 | W 7-2 | 42-36 | 1 | 7,866 | Tom Seaver | Grant Jackson | Tom Seaver | Grant Jackson | | 346 | 290 | 56 |
| 1970-07-05 | @ PHI | 79 | W 5-4 | 43-36 | 1 | 12,609 | Jerry Koosman | Woodie Fryman | Jerry Koosman | Woodie Fryman | Danny Frisella | 351 | 294 | 57 |
| 1970-07-06 | vs SLN | 80 | W 10-3 | 44-36 | 1 | 36,801 | Jim McAndrew | Jerry Reuss | Jim McAndrew | Jerry Reuss | Tug McGraw | 361 | 297 | 64 |
| 1970-07-07 | vs SLN | 81 | W 4-3 | 45-36 | 1 | 42,858 | Gary Gentry | Mike Torrez | Danny Frisella | Sal Campisi | | 365 | 300 | 65 |
| 1970-07-08 | vs SLN | 82 | W 7-5 | 46-36 | 1 | 38,932 | Ray Sadecki | Nelson Briles | Ray Sadecki | Nelson Briles | Ron Taylor | 372 | 305 | 67 |
| 1970-07-09 | vs MON | 83 | W 7-1 | 47-36 | 1 | 26,549 | Tom Seaver | Rich Nye | Tom Seaver | Rich Nye | | 379 | 306 | 73 |
| 1970-07-10 | vs MON | 84 | L 7-9 | 47-37 | 1 | 29,394 | Jerry Koosman | Carl Morton | Carl Morton | Jerry Koosman | Claude Raymond | 386 | 315 | 71 |
| 1970-07-11 | vs MON | 85 | L 2-6 | 47-38 | 2 | 53,968 | Jim McAndrew | Mike Wegener | Mike Wegener | Jim McAndrew | Claude Raymond | 388 | 321 | 67 |
| 1970-07-12 | vs MON | 86 | L 3-5 | 47-39 | 2 | 38,186 | Ray Sadecki | Steve Renko | Howie Reed | Ray Sadecki | Claude Raymond | 391 | 326 | 65 |
| 1970-07-16 | @ LAN | 87 | L 1-3 | 47-40 | 2 | 32,619 | Jim McAndrew | Bill Singer | Bill Singer | Jim McAndrew | | 392 | 329 | 63 |
| 1970-07-17 | @ LAN | 88 | L 0-1 | 47-41 | 2 | 43,713 | Tom Seaver | Don Sutton | Don Sutton | Tug McGraw | | 392 | 330 | 62 |
| 1970-07-18 | @ LAN | 89 | W 4-3 | 48-41 | 2 | 29,511 | Ray Sadecki | Claude Osteen | Danny Frisella | Jim Brewer | Ron Taylor | 396 | 333 | 63 |
| 1970-07-19 | @ SFN | 90 | L 3-5 | 49-42 | 2 | 0 | Nolan Ryan | Rich Robertson | Don McMahon | Ron Taylor | | 399 | 338 | 61 |
| 1970-07-19 | @ SFN | 91 | W 7-6 | 49-42 | 2 | 30,303 | Jerry Koosman | Skip Pitlock | Ron Taylor | Don McMahon | | 406 | 344 | 62 |
| 1970-07-20 | @ SFN | 92 | L 4-7 | 49-43 | 2 | 7,815 | Rich Folkers | Frank Reberger | Mike Davison | Rich Folkers | Don McMahon | 410 | 351 | 59 |
| 1970-07-21 | @ SDN | 93 | W 3-0 | 50-43 | 2 | 10,373 | Jim McAndrew | Clay Kirby | Jim McAndrew | Clay Kirby | | 413 | 351 | 62 |
| 1970-07-22 | @ SDN | 94 | L 4-5 | 50-44 | 2 | 18,981 | Tom Seaver | Earl Wilson | Jack Baldschun | Nolan Ryan | | 417 | 356 | 61 |
| 1970-07-24 | vs LAN | 95 | W 2-1 | 51-44 | 2 | 53,657 | Jerry Koosman | Bill Singer | Tug McGraw | Jim Brewer | | 419 | 357 | 62 |
| 1970-07-25 | vs LAN | 96 | W 6-4 | 52-44 | 2 | 45,433 | Ray Sadecki | Alan Foster | Danny Frisella | Jose Pena | Jim McAndrew | 425 | 361 | 64 |
| 1970-07-26 | vs LAN | 97 | L 3-5 | 52-45 | 2 | 51,139 | Gary Gentry | Don Sutton | Don Sutton | Gary Gentry | Jim Brewer | 428 | 366 | 62 |
| 1970-07-27 | vs SFN | 98 | W 5-3 | 53-45 | 2 | 51,061 | Tom Seaver | Gaylord Perry | Tom Seaver | Gaylord Perry | | 433 | 369 | 64 |
| 1970-07-28 | vs SFN | 99 | W 12-2 | 54-45 | 2 | 50,174 | Jim McAndrew | Rich Robertson | Jim McAndrew | Rich Robertson | | 445 | 371 | 74 |
| 1970-07-29 | vs SFN | 100 | L 2-4 | 54-46 | 2 | 43,029 | Jerry Koosman | Skip Pitlock | Skip Pitlock | Rich Folkers | Don McMahon | 447 | 375 | 72 |
| 1970-07-31 | vs SDN | 101 | W 6-5 | 55-46 | 1 | 30,684 | Gary Gentry | Pat Dobson | Danny Frisella | Ron Herbel | Tug McGraw | 453 | 380 | 73 |
| 1970-08-01 | vs SDN | 102 | W 4-2 | 56-46 | 1 | 25,919 | Tom Seaver | Earl Wilson | Tom Seaver | Earl Wilson | | 457 | 382 | 75 |
| 1970-08-02 | vs SDN | 103 | L 0-3 | 56-48 | 2 | 0 | Jim McAndrew | Danny Coombs | Danny Coombs | Jim McAndrew | Tom Dukes | 457 | 385 | 72 |
| 1970-08-02 | vs SDN | 104 | L 2-4 | 56-48 | 2 | 49,373 | Ray Sadecki | Dave Roberts | Ron Willis | Danny Frisella | | 459 | 389 | 70 |
| 1970-08-03 | vs CHN | 105 | L 1-6 | 56-49 | 2 | 50,669 | Jerry Koosman | Fergie Jenkins | Fergie Jenkins | Jerry Koosman | | 460 | 395 | 65 |
| 1970-08-04 | vs CHN | 106 | W 4-0 | 57-49 | 2 | 42,786 | Nolan Ryan | Joe Decker | Nolan Ryan | Joe Decker | | 464 | 395 | 69 |
| 1970-08-05 | @ SLN | 107 | W 5-3 | 58-49 | 2 | 24,188 | Danny Frisella | Steve Carlton | Danny Frisella | Steve Carlton | Ron Taylor | 469 | 398 | 71 |
| 1970-08-06 | @ SLN | 108 | L 0-3 | 58-50 | 2 | 23,412 | Tom Seaver | Nelson Briles | Nelson Briles | Tom Seaver | | 469 | 401 | 68 |
| 1970-08-07 | @ PIT | 109 | L 1-6 | 58-51 | 2 | 37,556 | Jim McAndrew | Bob Moose | Bob Moose | Jim McAndrew | | 470 | 407 | 63 |
| 1970-08-08 | @ PIT | 110 | W 12-9 | 59-51 | 2 | 27,843 | Jerry Koosman | Bob Veale | Jerry Koosman | Bob Veale | Gary Gentry | 482 | 416 | 66 |
| 1970-08-09 | @ PIT | 111 | L 3-8 | 59-52 | 2 | 41,772 | Nolan Ryan | Luke Walker | Luke Walker | Nolan Ryan | Orlando Pena | 485 | 424 | 61 |
| 1970-08-10 | @ PIT | 112 | W 10-2 | 60-52 | 2 | 47,148 | Tom Seaver | Dock Ellis | Tom Seaver | Dock Ellis | | 495 | 426 | 69 |
| 1970-08-11 | @ CIN | 113 | L 1-8 | 60-53 | 2 | 35,491 | Jim McAndrew | Gary Nolan | Gary Nolan | Jim McAndrew | | 496 | 434 | 62 |
| 1970-08-12 | @ CIN | 114 | W 2-1 | 61-53 | 2 | 32,902 | Gary Gentry | Tony Cloninger | Gary Gentry | Tony Cloninger | | 498 | 435 | 63 |
| 1970-08-13 | @ CIN | 115 | L 1-6 | 61-54 | 2 | 42,748 | Ray Sadecki | Jim Merritt | Jim Merritt | Ray Sadecki | | 499 | 441 | 58 |
| 1970-08-14 | @ ATL | 116 | L 2-10 | 62-55 | 2 | 0 | Nolan Ryan | Ron Reed | Ron Reed | Nolan Ryan | | 501 | 451 | 50 |
| 1970-08-14 | @ ATL | 117 | W 4-2 | 62-55 | 2 | 27,922 | Jerry Koosman | Pat Jarvis | Jerry Koosman | Pat Jarvis | Rich Folkers | 505 | 453 | 52 |
| 1970-08-15 | @ ATL | 118 | L 2-3 | 62-56 | 2 | 31,897 | Tom Seaver | Phil Niekro | Hoyt Wilhelm | Tom Seaver | | 507 | 456 | 51 |
| 1970-08-16 | @ ATL | 119 | W 2-1 | 63-56 | 2 | 25,383 | Jim McAndrew | Jim Nash | Jim McAndrew | Jim Nash | | 509 | 457 | 52 |
| 1970-08-18 | vs HOU | 120 | W 7-1 | 64-56 | 2 | 36,496 | Gary Gentry | Larry Dierker | Gary Gentry | Larry Dierker | | 516 | 458 | 58 |
| 1970-08-19 | vs HOU | 121 | L 4-9 | 64-57 | 2 | 38,539 | Tom Seaver | Wade Blasingame | Wade Blasingame | Tom Seaver | Fred Gladding | 520 | 467 | 53 |
| 1970-08-21 | vs CIN | 122 | W 4-1 | 65-57 | 2 | 53,320 | Jerry Koosman | Tony Cloninger | Jerry Koosman | Tony Cloninger | | 524 | 468 | 56 |
| 1970-08-22 | vs CIN | 123 | L 2-3 | 65-58 | 2 | 45,943 | Jim McAndrew | Jim Merritt | Jim Merritt | Tug McGraw | Wayne Granger | 526 | 471 | 55 |
| 1970-08-23 | vs CIN | 124 | W 5-4 | 66-59 | 2 | 0 | Gary Gentry | Gary Nolan | Ron Taylor | Wayne Granger | | 531 | 475 | 56 |
| 1970-08-23 | vs CIN | 125 | L 5-7 | 66-59 | 2 | 43,712 | Tom Seaver | Jim McGlothlin | Don Gullett | Tom Seaver | | 536 | 482 | 54 |
| 1970-08-25 | vs ATL | 126 | L 6-7 | 66-60 | 2 | 48,561 | Nolan Ryan | Pat Jarvis | Pat Jarvis | Nolan Ryan | Bob Priddy | 542 | 489 | 53 |
| 1970-08-26 | vs ATL | 127 | L 7-9 | 66-61 | 2 | 45,567 | Jerry Koosman | Ron Reed | Bob Priddy | Gary Gentry | | 549 | 498 | 51 |
| 1970-08-27 | vs ATL | 128 | W 5-1 | 67-61 | 2 | 39,810 | Jim McAndrew | Phil Niekro | Jim McAndrew | Phil Niekro | | 554 | 499 | 55 |
| 1970-08-28 | @ HOU | 129 | L 1-2 | 67-62 | 2 | 19,076 | Tom Seaver | Wade Blasingame | Wade Blasingame | Tom Seaver | | 555 | 501 | 54 |
| 1970-08-29 | @ HOU | 130 | L 8-9 | 67-63 | 2 | 16,203 | Gary Gentry | Jack Billingham | George Culver | Tug McGraw | | 563 | 510 | 53 |
| 1970-08-30 | @ HOU | 131 | L 5-9 | 67-64 | 3 | 15,754 | Nolan Ryan | Don Wilson | Don Wilson | Nolan Ryan | Fred Gladding | 568 | 519 | 49 |
| 1970-08-31 | @ SLN | 132 | W 11-5 | 68-64 | 3 | 17,284 | Jerry Koosman | Nelson Briles | Jerry Koosman | Nelson Briles | Ron Taylor | 579 | 524 | 55 |
| 1970-09-01 | @ SLN | 133 | W 4-3 | 69-64 | 2 | 22,527 | Jim McAndrew | Bob Gibson | Ron Herbel | Bob Gibson | Tug McGraw | 583 | 527 | 56 |
| 1970-09-02 | @ SLN | 134 | W 7-3 | 70-64 | 2 | 13,749 | Tom Seaver | Jerry Reuss | Tom Seaver | Jerry Reuss | | 590 | 530 | 60 |
| 1970-09-03 | @ SLN | 135 | L 3-5 | 70-65 | 3 | 13,169 | Gary Gentry | Steve Carlton | Steve Carlton | Gary Gentry | | 593 | 535 | 58 |
| 1970-09-04 | @ CHN | 136 | L 4-7 | 70-66 | 3 | 29,327 | Nolan Ryan | Bill Hands | Roberto Rodriguez | Danny Frisella | Bob Miller | 597 | 542 | 55 |
| 1970-09-05 | @ CHN | 137 | W 5-3 | 71-66 | 3 | 37,821 | Jerry Koosman | Ken Holtzman | Jerry Koosman | Ken Holtzman | Tug McGraw | 602 | 545 | 57 |
| 1970-09-07 | vs MON | 138 | W 5-4 | 73-66 | 2 | 0 | Tom Seaver | Carl Morton | Danny Frisella | Mike Marshall | | 607 | 549 | 58 |
| 1970-09-07 | vs MON | 139 | W 5-1 | 73-66 | 2 | 46,163 | Jim McAndrew | Dan McGinn | Jim McAndrew | Dan McGinn | | 612 | 550 | 62 |
| 1970-09-08 | vs MON | 140 | W 10-5 | 74-66 | 2 | 15,505 | Gary Gentry | Steve Renko | Tug McGraw | Steve Renko | Ron Herbel | 622 | 555 | 67 |
| 1970-09-09 | vs PHI | 141 | L 2-3 | 75-67 | 1 | 0 | Nolan Ryan | Barry Lersch | Barry Lersch | Danny Frisella | | 624 | 558 | 66 |
| 1970-09-09 | vs PHI | 142 | W 3-1 | 75-67 | 1 | 26,005 | Ray Sadecki | Grant Jackson | Ray Sadecki | Grant Jackson | | 627 | 559 | 68 |
| 1970-09-10 | vs PHI | 143 | W 3-2 | 76-67 | 1 | 14,307 | Jerry Koosman | Jim Bunning | Ron Herbel | Joe Hoerner | | 630 | 561 | 69 |
| 1970-09-11 | vs SLN | 144 | L 2-5 | 76-68 | 2 | 50,555 | Tom Seaver | Bob Gibson | Bob Gibson | Tom Seaver | | 632 | 566 | 66 |
| 1970-09-12 | vs SLN | 145 | W 3-0 | 77-68 | 2 | 35,402 | Jim McAndrew | Jerry Reuss | Jim McAndrew | Jerry Reuss | | 635 | 566 | 69 |
| 1970-09-13 | vs SLN | 146 | L 4-5 | 77-69 | 2 | 43,592 | Gary Gentry | Mike Torrez | Frank Linzy | Ron Herbel | | 639 | 571 | 68 |
| 1970-09-14 | @ MON | 147 | W 9-5 | 78-69 | 2 | 15,462 | Ray Sadecki | Bill Stoneman | Danny Frisella | Mike Marshall | Nolan Ryan | 648 | 576 | 72 |
| 1970-09-15 | @ MON | 148 | L 4-5 | 78-70 | 3 | 12,806 | Jerry Koosman | Carl Morton | John O'Donoghue | Jerry Koosman | | 652 | 581 | 71 |
| 1970-09-16 | @ MON | 149 | L 2-4 | 78-71 | 3 | 12,152 | Tom Seaver | Steve Renko | Steve Renko | Tom Seaver | | 654 | 585 | 69 |
| 1970-09-18 | vs PIT | 150 | L 2-3 | 78-72 | 3 | 42,225 | Jim McAndrew | Steve Blass | Steve Blass | Jim McAndrew | Dave Giusti | 656 | 588 | 68 |
| 1970-09-19 | vs PIT | 151 | L 1-2 | 78-73 | 3 | 41,323 | Gary Gentry | Luke Walker | Luke Walker | Gary Gentry | Joe Gibbon | 657 | 590 | 67 |
| 1970-09-20 | vs PIT | 152 | W 4-1 | 79-74 | 3 | 0 | Jerry Koosman | Bob Moose | Jerry Koosman | Bob Moose | | 661 | 591 | 70 |
| 1970-09-20 | vs PIT | 153 | L 5-9 | 79-74 | 3 | 54,806 | Tom Seaver | Fred Cambria | Dave Giusti | Tug McGraw | | 666 | 600 | 66 |
| 1970-09-22 | @ PHI | 154 | W 7-6 | 80-74 | 3 | 5,064 | Jim McAndrew | Jim Bunning | Nolan Ryan | Dick Selma | Dean Chance | 673 | 606 | 67 |
| 1970-09-23 | @ PHI | 155 | W 5-4 | 81-74 | 2 | 5,683 | Ray Sadecki | Chris Short | Tug McGraw | Dick Selma | | 678 | 610 | 68 |
| 1970-09-25 | @ PIT | 156 | L 3-4 | 81-75 | 3 | 41,484 | Jerry Koosman | Bob Moose | Mudcat Grant | Dean Chance | Joe Gibbon | 681 | 614 | 67 |
| 1970-09-26 | @ PIT | 157 | L 3-4 | 81-76 | 3 | 34,311 | Tom Seaver | Steve Blass | Mudcat Grant | Ron Herbel | | 684 | 618 | 66 |
| 1970-09-27 | @ PIT | 158 | L 1-2 | 81-77 | 3 | 50,469 | Jim McAndrew | Dock Ellis | Dock Ellis | Jim McAndrew | Dave Giusti | 685 | 620 | 65 |
| 1970-09-28 | vs CHN | 159 | W 6-3 | 82-77 | 3 | 21,670 | Gary Gentry | Ken Holtzman | Danny Frisella | Hoyt Wilhelm | | 691 | 623 | 68 |
| 1970-09-29 | vs CHN | 160 | W 3-1 | 83-77 | 2 | 26,832 | Jerry Koosman | Milt Pappas | Jerry Koosman | Milt Pappas | | 694 | 624 | 70 |
| 1970-09-30 | vs CHN | 161 | L 0-2 | 83-78 | 3 | 6,895 | Nolan Ryan | Bill Hands | Bill Hands | Nolan Ryan | | 694 | 626 | 68 |
| 1970-10-01 | vs CHN | 162 | L 1-4 | 83-79 | 3 | 48,314 | Jim McAndrew | Fergie Jenkins | Fergie Jenkins | Jim McAndrew | | 695 | 630 | 65 |