| 1975-04-08 | vs PHI | 1 | W 2-1 | 1-0 | 2 | 18,527 | Tom Seaver | Steve Carlton | Tom Seaver | Steve Carlton | | 2 | 1 | 1 |
| 1975-04-10 | vs PHI | 2 | L 2-3 | 1-1 | 3 | 5,964 | Jon Matlack | Jim Lonborg | Ron Schueler | Harry Parker | Cy Acosta | 4 | 4 | 0 |
| 1975-04-11 | @ PIT | 3 | L 3-4 | 1-2 | 4 | 43,880 | Jerry Koosman | Jerry Reuss | Larry Demery | Rick Baldwin | | 7 | 8 | -1 |
| 1975-04-13 | @ PIT | 4 | L 3-5 | 1-3 | 5 | 14,841 | Tom Seaver | Bruce Kison | Bruce Kison | Tom Seaver | | 10 | 13 | -3 |
| 1975-04-14 | @ PHI | 5 | L 3-4 | 1-4 | 5 | 10,626 | Randy Tate | Jim Lonborg | Gene Garber | Jerry Cram | | 13 | 17 | -4 |
| 1975-04-16 | @ SLN | 6 | L 2-3 | 1-5 | 6 | 11,691 | Jon Matlack | John Denny | John Denny | Jon Matlack | Mike Garman | 15 | 20 | -5 |
| 1975-04-17 | @ SLN | 7 | W 14-7 | 2-5 | 6 | 12,004 | Jerry Koosman | Lynn McGlothen | Rick Baldwin | Elias Sosa | | 29 | 27 | 2 |
| 1975-04-19 | vs CHN | 8 | L 2-4 | 2-6 | 6 | 28,754 | Tom Seaver | Steve Stone | Steve Stone | Tom Seaver | Darold Knowles | 31 | 31 | 0 |
| 1975-04-20 | vs CHN | 9 | W 8-6 | 4-6 | 5 | 0 | Jon Matlack | Rick Reuschel | Jon Matlack | Rick Reuschel | Bob Apodaca | 39 | 37 | 2 |
| 1975-04-20 | vs CHN | 10 | W 4-3 | 4-6 | 5 | 26,693 | Randy Tate | Burt Hooton | Randy Tate | Burt Hooton | Rick Baldwin | 43 | 40 | 3 |
| 1975-04-22 | vs SLN | 11 | W 9-5 | 5-6 | 5 | 9,318 | Jerry Koosman | Lynn McGlothen | Jerry Koosman | Lynn McGlothen | | 52 | 45 | 7 |
| 1975-04-23 | vs SLN | 12 | W 7-1 | 6-6 | 2 | 14,120 | Tom Seaver | Bob Gibson | Tom Seaver | Bob Gibson | | 59 | 46 | 13 |
| 1975-04-25 | @ MON | 13 | W 5-3 | 7-6 | 2 | 8,291 | Jon Matlack | Steve Rogers | Jon Matlack | Steve Rogers | Rick Baldwin | 64 | 49 | 15 |
| 1975-04-27 | @ MON | 14 | W 7-6 | 8-6 | 2 | 8,253 | Jerry Koosman | Dave McNally | Harry Parker | Dave McNally | Bob Apodaca | 71 | 55 | 16 |
| 1975-04-29 | @ CHN | 15 | W 9-1 | 9-6 | 2 | 8,539 | Tom Seaver | Burt Hooton | Tom Seaver | Burt Hooton | | 80 | 56 | 24 |
| 1975-04-30 | @ CHN | 16 | L 4-7 | 9-7 | 2 | 4,802 | Jon Matlack | Ray Burris | Ray Burris | Jon Matlack | Oscar Zamora | 84 | 63 | 21 |
| 1975-05-01 | @ CHN | 17 | L 2-5 | 9-8 | 3 | 5,637 | Randy Tate | Steve Stone | Steve Stone | Randy Tate | Darold Knowles | 86 | 68 | 18 |
| 1975-05-02 | vs MON | 18 | W 3-0 | 10-8 | 2 | 13,088 | Jerry Koosman | Dave McNally | Jerry Koosman | Dave McNally | | 89 | 68 | 21 |
| 1975-05-03 | vs MON | 19 | L 0-3 | 10-9 | 2 | 38,803 | Hank Webb | Woodie Fryman | Woodie Fryman | Hank Webb | | 89 | 71 | 18 |
| 1975-05-06 | vs PIT | 20 | L 1-2 | 10-10 | 2 | 8,257 | Tom Seaver | Ken Brett | Ken Brett | Tom Seaver | | 90 | 73 | 17 |
| 1975-05-07 | vs PIT | 21 | L 1-6 | 10-11 | 4 | 12,216 | Jon Matlack | Jerry Reuss | Jerry Reuss | Jon Matlack | | 91 | 79 | 12 |
| 1975-05-08 | vs PIT | 22 | L 2-4 | 10-12 | 4 | 14,053 | Jerry Koosman | Bruce Kison | Bruce Kison | Jerry Koosman | | 93 | 83 | 10 |
| 1975-05-09 | vs CIN | 23 | L 3-4 | 10-13 | 4 | 21,731 | Randy Tate | Don Gullett | Don Gullett | Randy Tate | Clay Carroll | 96 | 87 | 9 |
| 1975-05-10 | vs CIN | 24 | L 1-7 | 10-14 | 6 | 21,405 | Hank Webb | Clay Kirby | Clay Kirby | Hank Webb | Will McEnaney | 97 | 94 | 3 |
| 1975-05-11 | vs CIN | 25 | W 3-2 | 11-14 | 5 | 26,237 | Tom Seaver | Jack Billingham | Tom Seaver | Jack Billingham | | 100 | 96 | 4 |
| 1975-05-12 | vs SFN | 26 | W 3-2 | 12-14 | 4 | 10,836 | Jon Matlack | Jim Barr | Jon Matlack | Jim Barr | Tom Hall | 103 | 98 | 5 |
| 1975-05-14 | vs SFN | 27 | W 5-1 | 13-14 | 4 | 13,586 | Jerry Koosman | Mike Caldwell | Jerry Koosman | Mike Caldwell | | 108 | 99 | 9 |
| 1975-05-16 | @ HOU | 28 | W 10-2 | 14-14 | 4 | 10,672 | Tom Seaver | Larry Dierker | Tom Seaver | Larry Dierker | | 118 | 101 | 17 |
| 1975-05-17 | @ HOU | 29 | W 6-4 | 15-14 | 4 | 15,296 | Jon Matlack | Dave Roberts | Jon Matlack | Dave Roberts | Harry Parker | 124 | 105 | 19 |
| 1975-05-18 | @ HOU | 30 | L 7-12 | 15-15 | 4 | 10,252 | Randy Tate | Doug Konieczny | Doug Konieczny | Randy Tate | Jim Crawford | 131 | 117 | 14 |
| 1975-05-20 | @ CIN | 31 | W 6-2 | 16-15 | 4 | 16,845 | Jerry Koosman | Don Gullett | Jerry Koosman | Don Gullett | Bob Apodaca | 137 | 119 | 18 |
| 1975-05-21 | @ CIN | 32 | L 4-11 | 16-16 | 4 | 16,072 | Tom Seaver | Jack Billingham | Jack Billingham | Tom Seaver | | 141 | 130 | 11 |
| 1975-05-23 | @ ATL | 33 | W 3-1 | 17-16 | 3 | 10,144 | Jon Matlack | Carl Morton | Jon Matlack | Carl Morton | Bob Apodaca | 144 | 131 | 13 |
| 1975-05-24 | @ ATL | 34 | W 5-1 | 18-16 | 2 | 13,407 | Randy Tate | Ron Reed | Randy Tate | Ron Reed | Bob Apodaca | 149 | 132 | 17 |
| 1975-05-25 | @ ATL | 35 | L 3-6 | 18-17 | 2 | 8,537 | Jerry Koosman | Buzz Capra | Buzz Capra | Jerry Koosman | Tom House | 152 | 138 | 14 |
| 1975-05-26 | vs LAN | 36 | W 6-3 | 19-17 | 2 | 34,502 | Tom Seaver | Andy Messersmith | Tom Seaver | Andy Messersmith | | 158 | 141 | 17 |
| 1975-05-27 | vs LAN | 37 | L 4-10 | 19-18 | 3 | 20,538 | Harry Parker | Burt Hooton | Burt Hooton | Harry Parker | | 162 | 151 | 11 |
| 1975-05-28 | vs LAN | 38 | W 4-3 | 20-18 | 3 | 24,464 | Jon Matlack | Doug Rau | Jon Matlack | Doug Rau | Bob Apodaca | 166 | 154 | 12 |
| 1975-05-30 | vs SDN | 39 | L 2-6 | 20-19 | 3 | 12,208 | Jerry Koosman | Randy Jones | Randy Jones | Jerry Koosman | | 168 | 160 | 8 |
| 1975-05-31 | vs SDN | 40 | W 7-2 | 21-19 | 3 | 21,049 | Tom Seaver | Joe McIntosh | Tom Seaver | Joe McIntosh | | 175 | 162 | 13 |
| 1975-06-01 | vs SDN | 41 | L 0-4 | 21-20 | 3 | 12,072 | Randy Tate | Alan Foster | Alan Foster | Randy Tate | Danny Frisella | 175 | 166 | 9 |
| 1975-06-02 | vs HOU | 42 | W 2-0 | 22-20 | 3 | 13,003 | Jon Matlack | Dave Roberts | Jon Matlack | Dave Roberts | | 177 | 166 | 11 |
| 1975-06-03 | vs HOU | 43 | W 4-3 | 23-20 | 3 | 8,666 | Tom Hall | Ken Forsch | Tom Hall | Ken Forsch | Bob Apodaca | 181 | 169 | 12 |
| 1975-06-04 | vs HOU | 44 | W 1-0 | 24-20 | 3 | 15,442 | Jerry Koosman | Doug Konieczny | Jerry Koosman | Doug Konieczny | | 182 | 169 | 13 |
| 1975-06-05 | vs HOU | 45 | W 2-1 | 25-20 | 2 | 12,477 | Tom Seaver | Tom Griffin | Tom Seaver | Tom Griffin | | 184 | 170 | 14 |
| 1975-06-06 | vs ATL | 46 | L 1-4 | 25-21 | 3 | 15,978 | Randy Tate | Phil Niekro | Phil Niekro | Randy Tate | | 185 | 174 | 11 |
| 1975-06-07 | vs ATL | 47 | L 3-7 | 25-22 | 3 | 50,048 | Jon Matlack | Carl Morton | Carl Morton | Jon Matlack | Tom House | 188 | 181 | 7 |
| 1975-06-08 | vs ATL | 48 | W 7-6 | 26-22 | 2 | 24,928 | Tom Hall | Buzz Capra | Hank Webb | Elias Sosa | | 195 | 187 | 8 |
| 1975-06-09 | @ SFN | 49 | L 4-5 | 26-23 | 3 | 4,644 | Jerry Koosman | John Montefusco | Dave Heaverlo | Jerry Koosman | | 199 | 192 | 7 |
| 1975-06-10 | @ SFN | 50 | W 5-0 | 27-23 | 2 | 6,151 | Tom Seaver | Jim Barr | Tom Seaver | Jim Barr | | 204 | 192 | 12 |
| 1975-06-11 | @ LAN | 51 | W 2-1 | 28-23 | 2 | 40,095 | Randy Tate | Doug Rau | Bob Apodaca | Mike Marshall | | 206 | 193 | 13 |
| 1975-06-12 | @ LAN | 52 | W 2-0 | 29-23 | 2 | 27,240 | Jon Matlack | Don Sutton | Jon Matlack | Don Sutton | | 208 | 193 | 15 |
| 1975-06-13 | @ SDN | 53 | W 7-2 | 30-23 | 2 | 16,099 | George Stone | Joe McIntosh | George Stone | Joe McIntosh | | 215 | 195 | 20 |
| 1975-06-14 | @ SDN | 54 | L 1-7 | 30-24 | 2 | 16,049 | Jerry Koosman | Randy Jones | Randy Jones | Jerry Koosman | | 216 | 202 | 14 |
| 1975-06-15 | @ SDN | 55 | W 6-0 | 31-24 | 2 | 24,199 | Tom Seaver | Brent Strom | Tom Seaver | Brent Strom | | 222 | 202 | 20 |
| 1975-06-17 | @ MON | 56 | L 5-6 | 32-25 | 2 | 0 | Jon Matlack | Don Stanhouse | Dan Warthen | Jon Matlack | | 227 | 208 | 19 |
| 1975-06-17 | @ MON | 57 | W 5-2 | 32-25 | 2 | 21,710 | Randy Tate | Steve Rogers | Harry Parker | Chuck Taylor | | 232 | 210 | 22 |
| 1975-06-18 | @ MON | 58 | L 6-7 | 32-26 | 2 | 13,194 | George Stone | Fred Scherman | Chuck Taylor | Bob Apodaca | | 238 | 217 | 21 |
| 1975-06-19 | @ MON | 59 | L 2-3 | 32-27 | 2 | 12,426 | Jerry Koosman | Woodie Fryman | Dale Murray | Rick Baldwin | | 240 | 220 | 20 |
| 1975-06-20 | vs PIT | 60 | L 1-5 | 32-28 | 3 | 47,867 | Tom Seaver | John Candelaria | John Candelaria | Tom Hall | | 241 | 225 | 16 |
| 1975-06-21 | vs PIT | 61 | L 3-7 | 32-29 | 3 | 31,610 | Jon Matlack | Bruce Kison | Ramon Hernandez | Harry Parker | | 244 | 232 | 12 |
| 1975-06-22 | vs PIT | 62 | L 0-2 | 32-30 | 3 | 34,287 | Randy Tate | Dock Ellis | Dock Ellis | Randy Tate | | 244 | 234 | 10 |
| 1975-06-23 | vs SLN | 63 | L 0-1 | 32-32 | 4 | 0 | Hank Webb | Ron Reed | Ron Reed | Hank Webb | | 244 | 235 | 9 |
| 1975-06-23 | vs SLN | 64 | L 0-4 | 32-32 | 4 | 32,719 | George Stone | John Denny | John Denny | George Stone | | 244 | 239 | 5 |
| 1975-06-24 | vs SLN | 65 | W 5-1 | 33-32 | 3 | 19,240 | Jerry Koosman | John Curtis | Jerry Koosman | John Curtis | | 249 | 240 | 9 |
| 1975-06-25 | vs SLN | 66 | W 2-1 | 34-32 | 3 | 21,303 | Tom Seaver | Bob Forsch | Tom Seaver | Bob Forsch | Rick Baldwin | 251 | 241 | 10 |
| 1975-06-27 | vs PHI | 67 | W 4-2 | 35-32 | 3 | 27,935 | Jon Matlack | Wayne Twitchell | Jon Matlack | Wayne Twitchell | | 255 | 243 | 12 |
| 1975-06-28 | vs PHI | 68 | W 5-2 | 36-32 | 3 | 37,250 | Randy Tate | Steve Carlton | Randy Tate | Steve Carlton | | 260 | 245 | 15 |
| 1975-06-29 | vs PHI | 69 | L 6-9 | 36-34 | 3 | 0 | Jerry Koosman | Larry Christenson | Larry Christenson | Jerry Koosman | Tug McGraw | 266 | 254 | 12 |
| 1975-06-29 | vs PHI | 70 | L 3-4 | 36-34 | 3 | 45,723 | Tom Seaver | Tom Underwood | Tug McGraw | Tom Hall | | 269 | 258 | 11 |
| 1975-06-30 | vs CHN | 71 | W 5-1 | 37-34 | 3 | 14,742 | George Stone | Steve Stone | George Stone | Steve Stone | | 274 | 259 | 15 |
| 1975-07-01 | vs CHN | 72 | L 4-5 | 37-35 | 3 | 16,822 | Hank Webb | Ray Burris | Tom Dettore | Rick Baldwin | | 278 | 264 | 14 |
| 1975-07-02 | vs CHN | 73 | W 7-2 | 38-35 | 3 | 16,055 | Jon Matlack | Bill Bonham | Jon Matlack | Bill Bonham | | 285 | 266 | 19 |
| 1975-07-03 | vs CHN | 74 | W 4-0 | 39-35 | 3 | 17,299 | Jerry Koosman | Rick Reuschel | Jerry Koosman | Rick Reuschel | | 289 | 266 | 23 |
| 1975-07-04 | @ PHI | 75 | W 4-3 | 40-35 | 3 | 55,301 | Tom Seaver | Larry Christenson | Tom Seaver | Tug McGraw | Rick Baldwin | 293 | 269 | 24 |
| 1975-07-05 | @ PHI | 76 | L 2-8 | 40-37 | 3 | 0 | Randy Tate | Ron Schueler | Ron Schueler | Randy Tate | | 295 | 277 | 18 |
| 1975-07-05 | @ PHI | 77 | L 7-10 | 40-37 | 3 | 50,137 | George Stone | Jim Lonborg | Jim Lonborg | Nino Espinosa | Gene Garber | 302 | 287 | 15 |
| 1975-07-06 | @ PHI | 78 | L 6-8 | 40-38 | 3 | 27,037 | Jon Matlack | Wayne Twitchell | Wayne Twitchell | Jon Matlack | Gene Garber | 308 | 295 | 13 |
| 1975-07-07 | @ ATL | 79 | W 3-1 | 41-38 | 3 | 4,510 | Hank Webb | Jamie Easterly | Hank Webb | Jamie Easterly | | 311 | 296 | 15 |
| 1975-07-08 | @ ATL | 80 | W 4-3 | 42-38 | 3 | 4,942 | Jerry Koosman | Carl Morton | Jerry Koosman | Carl Morton | Ken Sanders | 315 | 299 | 16 |
| 1975-07-09 | @ ATL | 81 | W 2-1 | 43-38 | 3 | 6,515 | Tom Seaver | Bruce Dal Canton | Tom Seaver | Max Leon | | 317 | 300 | 17 |
| 1975-07-11 | @ CIN | 82 | L 3-4 | 43-40 | 3 | 0 | Jon Matlack | Fred Norman | Fred Norman | Jon Matlack | Will McEnaney | 320 | 304 | 16 |
| 1975-07-11 | @ CIN | 83 | L 1-4 | 43-40 | 3 | 48,213 | Randy Tate | Clay Kirby | Clay Kirby | Randy Tate | Will McEnaney | 321 | 308 | 13 |
| 1975-07-12 | @ CIN | 84 | L 2-3 | 43-41 | 3 | 47,183 | Jerry Koosman | Pat Darcy | Tom Carroll | Jerry Koosman | Rawly Eastwick | 323 | 311 | 12 |
| 1975-07-13 | @ CIN | 85 | L 3-5 | 43-42 | 3 | 42,180 | Tom Seaver | Gary Nolan | Will McEnaney | Tom Seaver | Rawly Eastwick | 326 | 316 | 10 |
| 1975-07-17 | vs ATL | 86 | W 4-3 | 44-42 | 3 | 16,010 | Jerry Koosman | Phil Niekro | Rick Baldwin | Tom House | | 330 | 319 | 11 |
| 1975-07-18 | vs ATL | 87 | L 3-4 | 44-43 | 3 | 23,262 | Jon Matlack | Carl Morton | Carl Morton | Jon Matlack | Max Leon | 333 | 323 | 10 |
| 1975-07-19 | vs ATL | 88 | W 5-4 | 45-43 | 3 | 22,551 | Tom Seaver | Bruce Dal Canton | Tom Seaver | Bruce Dal Canton | | 338 | 327 | 11 |
| 1975-07-20 | vs HOU | 89 | W 10-9 | 46-43 | 3 | 20,242 | Randy Tate | Dave Roberts | Tom Hall | Wayne Granger | Harry Parker | 348 | 336 | 12 |
| 1975-07-21 | vs HOU | 90 | L 2-6 | 46-44 | 3 | 13,414 | George Stone | Ken Forsch | Ken Forsch | George Stone | | 350 | 342 | 8 |
| 1975-07-22 | vs CIN | 91 | W 3-1 | 47-44 | 3 | 32,759 | Jerry Koosman | Jack Billingham | Jerry Koosman | Jack Billingham | | 353 | 343 | 10 |
| 1975-07-23 | vs CIN | 92 | W 5-2 | 48-44 | 3 | 34,649 | Jon Matlack | Gary Nolan | Jon Matlack | Gary Nolan | | 358 | 345 | 13 |
| 1975-07-24 | vs CIN | 93 | L 1-2 | 48-45 | 3 | 41,423 | Tom Seaver | Fred Norman | Fred Norman | Tom Seaver | Rawly Eastwick | 359 | 347 | 12 |
| 1975-07-25 | @ CHN | 94 | W 6-3 | 49-45 | 3 | 15,040 | Randy Tate | Rick Reuschel | Randy Tate | Rick Reuschel | Ken Sanders | 365 | 350 | 15 |
| 1975-07-26 | @ CHN | 95 | W 9-8 | 50-45 | 3 | 20,474 | George Stone | Ray Burris | Tom Hall | Darold Knowles | Rick Baldwin | 374 | 358 | 16 |
| 1975-07-27 | @ CHN | 96 | L 2-4 | 51-46 | 3 | 0 | Jerry Koosman | Steve Stone | Steve Stone | Jerry Koosman | | 376 | 362 | 14 |
| 1975-07-27 | @ CHN | 97 | W 4-1 | 51-46 | 3 | 29,774 | Hank Webb | Tom Dettore | Hank Webb | Paul Reuschel | Ken Sanders | 380 | 363 | 17 |
| 1975-07-28 | @ SLN | 98 | W 11-7 | 52-46 | 3 | 19,406 | Jon Matlack | Bob Forsch | Jon Matlack | Bob Forsch | Bob Apodaca | 391 | 370 | 21 |
| 1975-07-29 | @ SLN | 99 | L 3-5 | 53-47 | 3 | 0 | Tom Seaver | Lynn McGlothen | Lynn McGlothen | Tom Seaver | Mike Garman | 394 | 375 | 19 |
| 1975-07-29 | @ SLN | 100 | W 11-6 | 53-47 | 3 | 31,431 | Tom Hall | Ron Reed | Tom Hall | Ron Reed | Rick Baldwin | 405 | 381 | 24 |
| 1975-07-30 | @ SLN | 101 | L 2-5 | 53-48 | 3 | 14,226 | Randy Tate | John Curtis | John Curtis | Randy Tate | | 407 | 386 | 21 |
| 1975-07-31 | @ PIT | 102 | W 6-2 | 54-48 | 3 | 13,235 | Jerry Koosman | Jim Rooker | Jerry Koosman | Jim Rooker | | 413 | 388 | 25 |
| 1975-08-01 | @ PIT | 103 | W 4-2 | 55-48 | 3 | 18,082 | George Stone | Ken Brett | George Stone | Ken Brett | Bob Apodaca | 417 | 390 | 27 |
| 1975-08-02 | @ PIT | 104 | W 6-0 | 56-48 | 3 | 14,306 | Jon Matlack | Bruce Kison | Jon Matlack | Bruce Kison | | 423 | 390 | 33 |
| 1975-08-03 | @ PIT | 105 | L 4-5 | 56-50 | 3 | 0 | Tom Seaver | Dock Ellis | Larry Demery | Bob Apodaca | | 427 | 395 | 32 |
| 1975-08-03 | @ PIT | 106 | L 3-4 | 56-50 | 3 | 30,070 | Hank Webb | John Candelaria | John Candelaria | Hank Webb | | 430 | 399 | 31 |
| 1975-08-04 | vs MON | 107 | L 3-4 | 56-51 | 3 | 10,720 | Randy Tate | Dan Warthen | Don DeMola | Randy Tate | Chuck Taylor | 433 | 403 | 30 |
| 1975-08-05 | vs MON | 108 | L 0-7 | 56-53 | 3 | 0 | Jerry Koosman | Don Carrithers | Don Carrithers | Jerry Koosman | | 433 | 410 | 23 |
| 1975-08-05 | vs MON | 109 | L 0-7 | 56-53 | 3 | 26,919 | Tom Hall | Dennis Blair | Dennis Blair | Tom Hall | Woodie Fryman | 433 | 417 | 16 |
| 1975-08-06 | vs MON | 110 | W 9-6 | 57-53 | 3 | 9,001 | George Stone | Steve Renko | Hank Webb | Steve Renko | | 442 | 423 | 19 |
| 1975-08-07 | vs MON | 111 | W 7-0 | 58-53 | 3 | 18,036 | Tom Seaver | Steve Rogers | Tom Seaver | Steve Rogers | | 449 | 423 | 26 |
| 1975-08-08 | vs LAN | 112 | L 3-4 | 58-54 | 3 | 42,049 | Randy Tate | Doug Rau | Mike Marshall | Ken Sanders | | 452 | 427 | 25 |
| 1975-08-09 | vs LAN | 113 | L 0-2 | 58-55 | 4 | 36,421 | Jerry Koosman | Burt Hooton | Burt Hooton | Jerry Koosman | | 452 | 429 | 23 |
| 1975-08-10 | vs LAN | 114 | L 1-2 | 58-56 | 4 | 39,915 | Hank Webb | Don Sutton | Don Sutton | Hank Webb | | 453 | 431 | 22 |
| 1975-08-11 | vs SDN | 115 | W 8-4 | 59-56 | 4 | 14,382 | George Stone | Randy Jones | Skip Lockwood | Randy Jones | | 461 | 435 | 26 |
| 1975-08-12 | vs SDN | 116 | W 9-4 | 60-56 | 4 | 20,259 | Tom Seaver | Jerry Johnson | Tom Seaver | Jerry Johnson | | 470 | 439 | 31 |
| 1975-08-13 | vs SDN | 117 | L 5-8 | 60-57 | 4 | 16,027 | Randy Tate | Dan Spillner | Rich Folkers | Randy Tate | | 475 | 447 | 28 |
| 1975-08-15 | vs SFN | 118 | L 2-6 | 61-58 | 4 | 0 | Jerry Koosman | Ed Halicki | Ed Halicki | Jerry Koosman | Gary Lavelle | 477 | 453 | 24 |
| 1975-08-15 | vs SFN | 119 | W 9-4 | 61-58 | 4 | 43,395 | Hank Webb | Tom Bradley | Hank Webb | Tom Bradley | | 486 | 457 | 29 |
| 1975-08-16 | vs SFN | 120 | W 4-2 | 62-58 | 4 | 20,751 | Craig Swan | Pete Falcone | Craig Swan | Pete Falcone | Bob Apodaca | 490 | 459 | 31 |
| 1975-08-17 | vs SFN | 121 | W 3-0 | 63-58 | 4 | 30,953 | Tom Seaver | John Montefusco | Tom Seaver | John Montefusco | Jerry Koosman | 493 | 459 | 34 |
| 1975-08-18 | @ HOU | 122 | L 0-4 | 63-59 | 4 | 7,351 | Randy Tate | J.R. Richard | J.R. Richard | Randy Tate | | 493 | 463 | 30 |
| 1975-08-19 | @ HOU | 123 | W 6-3 | 64-59 | 4 | 7,843 | Jon Matlack | Larry Dierker | Jon Matlack | Larry Dierker | Jerry Koosman | 499 | 466 | 33 |
| 1975-08-20 | @ HOU | 124 | L 4-5 | 64-60 | 4 | 9,667 | Hank Webb | Dave Roberts | Jim Crawford | Rick Baldwin | | 503 | 471 | 32 |
| 1975-08-22 | @ SFN | 125 | W 6-4 | 65-60 | 4 | 4,428 | Tom Seaver | Pete Falcone | Tom Seaver | Pete Falcone | Bob Apodaca | 509 | 475 | 34 |
| 1975-08-23 | @ SFN | 126 | L 1-2 | 65-61 | 4 | 8,060 | Jerry Koosman | John Montefusco | Gary Lavelle | Skip Lockwood | | 510 | 477 | 33 |
| 1975-08-24 | @ SFN | 127 | W 9-5 | 66-62 | 4 | 0 | Jon Matlack | Jim Barr | Jon Matlack | Jim Barr | Bob Apodaca | 519 | 482 | 37 |
| 1975-08-24 | @ SFN | 128 | L 0-6 | 66-62 | 4 | 24,132 | Craig Swan | Ed Halicki | Ed Halicki | Craig Swan | | 519 | 488 | 31 |
| 1975-08-25 | @ SDN | 129 | W 4-0 | 67-62 | 4 | 6,358 | Hank Webb | Brent Strom | Hank Webb | Brent Strom | | 523 | 488 | 35 |
| 1975-08-26 | @ SDN | 130 | W 7-2 | 68-62 | 4 | 14,779 | Randy Tate | Dave Freisleben | Randy Tate | Dave Freisleben | | 530 | 490 | 40 |
| 1975-08-27 | @ SDN | 131 | W 7-0 | 69-62 | 4 | 8,524 | Tom Seaver | Dan Spillner | Tom Seaver | Dan Spillner | | 537 | 490 | 47 |
| 1975-08-28 | @ LAN | 132 | W 4-1 | 70-62 | 4 | 20,970 | Jerry Koosman | Rick Rhoden | Jerry Koosman | Rick Rhoden | | 541 | 491 | 50 |
| 1975-08-29 | @ LAN | 133 | W 6-1 | 71-62 | 4 | 27,401 | Jon Matlack | Don Sutton | Jon Matlack | Don Sutton | | 547 | 492 | 55 |
| 1975-08-30 | @ LAN | 134 | L 0-7 | 71-63 | 4 | 21,584 | Hank Webb | Andy Messersmith | Andy Messersmith | Hank Webb | | 547 | 499 | 48 |
| 1975-08-31 | @ LAN | 135 | L 2-5 | 71-64 | 4 | 24,798 | Craig Swan | Doug Rau | Doug Rau | Craig Swan | Charlie Hough | 549 | 504 | 45 |
| 1975-09-01 | vs PIT | 136 | W 3-0 | 72-64 | 3 | 45,991 | Tom Seaver | John Candelaria | Tom Seaver | John Candelaria | | 552 | 504 | 48 |
| 1975-09-02 | vs PIT | 137 | L 4-8 | 72-65 | 3 | 26,486 | Jerry Koosman | Ken Brett | Kent Tekulve | Jerry Koosman | Dave Giusti | 556 | 512 | 44 |
| 1975-09-03 | vs PIT | 138 | L 1-3 | 72-66 | 4 | 27,599 | Jon Matlack | Jerry Reuss | Jerry Reuss | Jon Matlack | | 557 | 515 | 42 |
| 1975-09-05 | vs SLN | 139 | W 5-2 | 73-66 | 4 | 27,093 | Tom Seaver | Eric Rasmussen | Tom Seaver | Eric Rasmussen | Bob Apodaca | 562 | 517 | 45 |
| 1975-09-06 | vs SLN | 140 | L 3-6 | 73-67 | 4 | 17,032 | Jerry Koosman | Bob Forsch | Bob Forsch | Jerry Koosman | Al Hrabosky | 565 | 523 | 42 |
| 1975-09-07 | vs SLN | 141 | L 4-12 | 73-68 | 4 | 25,810 | Jon Matlack | Lynn McGlothen | Lynn McGlothen | Jon Matlack | | 569 | 535 | 34 |
| 1975-09-08 | @ MON | 142 | L 5-6 | 73-70 | 4 | 0 | Hank Webb | Chip Lang | Dale Murray | Rick Baldwin | | 574 | 541 | 33 |
| 1975-09-08 | @ MON | 143 | L 1-6 | 73-70 | 4 | 10,208 | George Stone | Don Carrithers | Don Carrithers | George Stone | | 575 | 547 | 28 |
| 1975-09-09 | @ MON | 144 | L 1-2 | 73-71 | 4 | 7,134 | Craig Swan | Dan Warthen | Dale Murray | Bob Apodaca | | 576 | 549 | 27 |
| 1975-09-10 | @ PIT | 145 | L 4-8 | 73-72 | 4 | 11,988 | Tom Seaver | Jim Rooker | Jim Rooker | Tom Seaver | | 580 | 557 | 23 |
| 1975-09-11 | @ PIT | 146 | W 7-0 | 74-72 | 4 | 4,762 | Jerry Koosman | Jerry Reuss | Jerry Koosman | Jerry Reuss | | 587 | 557 | 30 |
| 1975-09-12 | @ SLN | 147 | L 1-5 | 74-73 | 4 | 14,731 | Jon Matlack | Lynn McGlothen | Lynn McGlothen | Jon Matlack | | 588 | 562 | 26 |
| 1975-09-13 | @ SLN | 148 | W 6-2 | 75-73 | 4 | 27,627 | Hank Webb | Ron Reed | Hank Webb | Ron Reed | | 594 | 564 | 30 |
| 1975-09-14 | @ SLN | 149 | L 2-6 | 75-74 | 4 | 50,548 | Tom Seaver | John Denny | John Denny | Tom Seaver | Mike Garman | 596 | 570 | 26 |
| 1975-09-15 | vs MON | 150 | W 3-2 | 76-74 | 4 | 7,259 | Jerry Koosman | Steve Rogers | Jerry Koosman | Steve Rogers | Skip Lockwood | 599 | 572 | 27 |
| 1975-09-16 | vs MON | 151 | W 4-3 | 77-74 | 4 | 6,956 | Jon Matlack | Don Carrithers | Rick Baldwin | Don DeMola | | 603 | 575 | 28 |
| 1975-09-17 | vs CHN | 152 | L 2-5 | 77-75 | 4 | 7,568 | Craig Swan | Ray Burris | Ray Burris | Craig Swan | | 605 | 580 | 25 |
| 1975-09-18 | vs CHN | 153 | W 7-5 | 78-75 | 4 | 6,336 | Hank Webb | Donnie Moore | Ken Sanders | Darold Knowles | | 612 | 585 | 27 |
| 1975-09-19 | vs PHI | 154 | L 3-4 | 78-76 | 4 | 16,676 | Tom Seaver | Larry Christenson | Tug McGraw | Skip Lockwood | | 615 | 589 | 26 |
| 1975-09-20 | vs PHI | 155 | W 9-7 | 79-76 | 4 | 18,863 | Jerry Koosman | Wayne Simpson | Bob Apodaca | Gene Garber | | 624 | 596 | 28 |
| 1975-09-21 | vs PHI | 156 | L 2-4 | 79-77 | 4 | 52,144 | Jon Matlack | Dick Ruthven | Dick Ruthven | Jon Matlack | Tug McGraw | 626 | 600 | 26 |
| 1975-09-23 | @ CHN | 157 | W 8-6 | 80-77 | 3 | 2,443 | Craig Swan | Ray Burris | Bob Apodaca | Darold Knowles | Ken Sanders | 634 | 606 | 28 |
| 1975-09-24 | @ CHN | 158 | L 0-1 | 80-78 | 3 | 2,113 | Tom Seaver | Rick Reuschel | Ken Crosby | Skip Lockwood | | 634 | 607 | 27 |
| 1975-09-26 | @ PHI | 159 | L 3-4 | 81-79 | 4 | 0 | Jon Matlack | Tom Underwood | Gene Garber | Bob Apodaca | | 637 | 611 | 26 |
| 1975-09-26 | @ PHI | 160 | W 3-2 | 81-79 | 4 | 20,189 | Jerry Koosman | Dick Ruthven | Jerry Koosman | Tug McGraw | Ken Sanders | 640 | 613 | 27 |
| 1975-09-27 | @ PHI | 161 | L 1-8 | 81-80 | 4 | 27,615 | Randy Tate | Steve Carlton | Steve Carlton | Randy Tate | | 641 | 621 | 20 |
| 1975-09-28 | @ PHI | 162 | W 5-4 | 82-80 | 4 | 21,105 | Tom Seaver | Larry Christenson | Tom Seaver | Larry Christenson | Skip Lockwood | 646 | 625 | 21 |