| 1987-04-06 | @ CIN | 1 | L 5-11 | 0-1 | 2 | 55,166 | Floyd Youmans | Tom Browning | Bill Landrum | Floyd Youmans | | 5 | 11 | -6 |
| 1987-04-08 | @ CIN | 2 | L 2-7 | 0-2 | 4 | 13,658 | Jay Tibbs | Bill Gullickson | Bill Gullickson | Jay Tibbs | | 7 | 18 | -11 |
| 1987-04-10 | @ HOU | 3 | L 1-6 | 0-3 | 5 | 24,048 | Neal Heaton | Danny Darwin | Danny Darwin | Neal Heaton | | 8 | 24 | -16 |
| 1987-04-11 | @ HOU | 4 | L 2-3 | 0-4 | 5 | 39,576 | Floyd Youmans | Mike Scott | Aurelio Lopez | Jeff Parrett | Dave Smith | 10 | 27 | -17 |
| 1987-04-12 | @ HOU | 5 | L 0-1 | 0-5 | 6 | 16,618 | Bob Sebra | Bob Knepper | Bob Knepper | Bob Sebra | Dave Smith | 10 | 28 | -18 |
| 1987-04-14 | @ SLN | 6 | W 9-4 | 1-5 | 5 | 48,458 | Jay Tibbs | Greg Mathews | Jay Tibbs | Greg Mathews | | 19 | 32 | -13 |
| 1987-04-16 | @ SLN | 7 | W 4-3 | 2-5 | 5 | 26,976 | Neal Heaton | Bob Forsch | Neal Heaton | Bob Forsch | Randy St. Claire | 23 | 35 | -12 |
| 1987-04-17 | @ CHN | 8 | L 0-7 | 2-6 | 5 | 23,023 | Floyd Youmans | Rick Sutcliffe | Rick Sutcliffe | Floyd Youmans | | 23 | 42 | -19 |
| 1987-04-18 | @ CHN | 9 | W 4-2 | 3-6 | 5 | 32,613 | Bob Sebra | Greg Maddux | Bob Sebra | Greg Maddux | Randy St. Claire | 27 | 44 | -17 |
| 1987-04-19 | @ CHN | 10 | W 3-1 | 4-6 | 4 | 19,889 | Lary Sorensen | Jamie Moyer | Lary Sorensen | Jamie Moyer | Andy McGaffigan | 30 | 45 | -15 |
| 1987-04-20 | vs PHI | 11 | L 3-4 | 4-7 | 5 | 50,482 | Jay Tibbs | Kevin Gross | Dan Schatzeder | Jay Tibbs | Kent Tekulve | 33 | 49 | -16 |
| 1987-04-22 | vs PHI | 12 | W 7-3 | 5-7 | 5 | 8,114 | Neal Heaton | Joe Cowley | Neal Heaton | Joe Cowley | | 40 | 52 | -12 |
| 1987-04-23 | vs PHI | 13 | W 6-5 | 6-7 | 3 | 5,632 | Floyd Youmans | Shane Rawley | Randy St. Claire | Michael Jackson | Andy McGaffigan | 46 | 57 | -11 |
| 1987-04-24 | vs CHN | 14 | L 4-6 | 6-8 | 4 | 7,752 | Bob Sebra | Jamie Moyer | Jamie Moyer | Bob Sebra | Lee Smith | 50 | 63 | -13 |
| 1987-04-25 | vs CHN | 15 | L 4-9 | 6-9 | 4 | 11,824 | Jay Tibbs | Scott Sanderson | Scott Sanderson | Jay Tibbs | | 54 | 72 | -18 |
| 1987-04-26 | vs CHN | 16 | L 1-7 | 6-10 | 4 | 12,052 | Lary Sorensen | Steve Trout | Steve Trout | Lary Sorensen | | 55 | 79 | -24 |
| 1987-04-27 | @ PHI | 17 | W 6-4 | 7-10 | 4 | 15,149 | Neal Heaton | Kevin Gross | Neal Heaton | Kevin Gross | Randy St. Claire | 61 | 83 | -22 |
| 1987-04-28 | @ PHI | 18 | W 7-1 | 8-10 | 4 | 11,598 | Floyd Youmans | Joe Cowley | Floyd Youmans | Joe Cowley | Andy McGaffigan | 68 | 84 | -16 |
| 1987-04-29 | @ PHI | 19 | L 0-5 | 8-11 | 4 | 14,588 | Bob Sebra | Shane Rawley | Shane Rawley | Bob Sebra | | 68 | 89 | -21 |
| 1987-04-30 | @ NYN | 20 | L 3-11 | 8-12 | 5 | 20,607 | Jay Tibbs | Rick Aguilera | Rick Aguilera | Jay Tibbs | | 71 | 100 | -29 |
| 1987-05-01 | @ NYN | 21 | L 6-7 | 8-13 | 5 | 28,808 | Bryn Smith | Ron Darling | Jesse Orosco | Bob McClure | | 77 | 107 | -30 |
| 1987-05-02 | @ NYN | 22 | W 11-7 | 9-13 | 5 | 37,235 | Neal Heaton | David Cone | Randy St. Claire | Jesse Orosco | Andy McGaffigan | 88 | 114 | -26 |
| 1987-05-03 | @ NYN | 23 | W 2-0 | 10-13 | 5 | 30,759 | Floyd Youmans | Bob Ojeda | Bob McClure | Bob Ojeda | Tim Burke | 90 | 114 | -24 |
| 1987-05-04 | @ ATL | 24 | L 7-10 | 10-14 | 5 | 4,155 | Bob Sebra | David Palmer | David Palmer | Bob Sebra | Jim Acker | 97 | 124 | -27 |
| 1987-05-05 | @ ATL | 25 | W 6-4 | 11-14 | 5 | 4,515 | Jay Tibbs | Rick Mahler | Jay Tibbs | Rick Mahler | Andy McGaffigan | 103 | 128 | -25 |
| 1987-05-06 | @ ATL | 26 | W 6-2 | 12-14 | 4 | 5,891 | Bryn Smith | Randy O'Neal | Bryn Smith | Randy O'Neal | | 109 | 130 | -21 |
| 1987-05-08 | vs HOU | 27 | L 0-3 | 12-15 | 4 | 9,692 | Neal Heaton | Mike Scott | Mike Scott | Neal Heaton | | 109 | 133 | -24 |
| 1987-05-09 | vs HOU | 28 | W 3-1 | 13-15 | 4 | 12,590 | Bob Sebra | Jim Deshaies | Bob Sebra | Jim Deshaies | Tim Burke | 112 | 134 | -22 |
| 1987-05-10 | vs HOU | 29 | W 6-2 | 14-15 | 3 | 13,259 | Jay Tibbs | Danny Darwin | Jay Tibbs | Danny Darwin | Randy St. Claire | 118 | 136 | -18 |
| 1987-05-11 | vs ATL | 30 | W 7-6 | 15-15 | 3 | 9,653 | Bryn Smith | Randy O'Neal | Lary Sorensen | Jim Acker | | 125 | 142 | -17 |
| 1987-05-12 | vs ATL | 31 | L 2-5 | 15-16 | 3 | 9,522 | Ubaldo Heredia | Zane Smith | Zane Smith | Ubaldo Heredia | Jeff Dedmon | 127 | 147 | -20 |
| 1987-05-13 | vs CIN | 32 | L 6-12 | 15-17 | 3 | 11,265 | Neal Heaton | Tom Browning | Tom Browning | Randy St. Claire | | 133 | 159 | -26 |
| 1987-05-14 | vs CIN | 33 | L 9-10 | 15-18 | 4 | 7,206 | Bob Sebra | Bill Gullickson | Ron Robinson | Randy St. Claire | John Franco | 142 | 169 | -27 |
| 1987-05-15 | vs LAN | 34 | W 6-3 | 16-18 | 3 | 14,661 | Jay Tibbs | Fernando Valenzuela | Jay Tibbs | Fernando Valenzuela | Tim Burke | 148 | 172 | -24 |
| 1987-05-16 | vs LAN | 35 | W 10-3 | 17-18 | 3 | 14,534 | Bryn Smith | Bob Welch | Bryn Smith | Bob Welch | | 158 | 175 | -17 |
| 1987-05-17 | vs LAN | 36 | W 8-3 | 18-18 | 3 | 40,064 | Ubaldo Heredia | Orel Hershiser | Bob McClure | Orel Hershiser | | 166 | 178 | -12 |
| 1987-05-18 | vs SFN | 37 | W 7-2 | 19-18 | 3 | 11,921 | Neal Heaton | Kelly Downs | Neal Heaton | Kelly Downs | | 173 | 180 | -7 |
| 1987-05-19 | vs SFN | 38 | L 2-6 | 19-19 | 3 | 15,042 | Floyd Youmans | Mike LaCoss | Mike LaCoss | Floyd Youmans | | 175 | 186 | -11 |
| 1987-05-20 | vs SFN | 39 | L 7-9 | 19-20 | 3 | 10,703 | Jay Tibbs | Mike Krukow | Jeff Robinson | Randy St. Claire | | 182 | 195 | -13 |
| 1987-05-22 | @ SDN | 40 | L 3-5 | 19-21 | 5 | 11,462 | Bryn Smith | Andy Hawkins | Andy Hawkins | Curt Brown | Rich Gossage | 185 | 200 | -15 |
| 1987-05-23 | @ SDN | 41 | W 6-0 | 20-21 | 4 | 47,184 | Neal Heaton | Dave Dravecky | Neal Heaton | Dave Dravecky | | 191 | 200 | -9 |
| 1987-05-24 | @ SDN | 42 | W 2-1 | 21-21 | 4 | 12,939 | Floyd Youmans | Eric Show | Floyd Youmans | Eric Show | Tim Burke | 193 | 201 | -8 |
| 1987-05-25 | @ LAN | 43 | W 3-1 | 22-21 | 4 | 39,091 | Lary Sorensen | Rick Honeycutt | Lary Sorensen | Rick Honeycutt | Andy McGaffigan | 196 | 202 | -6 |
| 1987-05-26 | @ LAN | 44 | W 8-3 | 23-21 | 3 | 25,336 | Bob Sebra | Alejandro Pena | Bob Sebra | Alejandro Pena | | 204 | 205 | -1 |
| 1987-05-27 | @ LAN | 45 | L 4-6 | 23-22 | 3 | 34,846 | Bryn Smith | Fernando Valenzuela | Fernando Valenzuela | Bryn Smith | | 208 | 211 | -3 |
| 1987-05-29 | @ SFN | 46 | W 10-4 | 24-22 | 3 | 12,210 | Neal Heaton | Mike LaCoss | Neal Heaton | Mike LaCoss | Tim Burke | 218 | 215 | 3 |
| 1987-05-30 | @ SFN | 47 | W 6-4 | 25-22 | 3 | 15,382 | Floyd Youmans | Mike Krukow | Floyd Youmans | Mike Krukow | Randy St. Claire | 224 | 219 | 5 |
| 1987-05-31 | @ SFN | 48 | L 0-8 | 25-23 | 3 | 29,740 | Bob Sebra | Kelly Downs | Kelly Downs | Bob Sebra | | 224 | 227 | -3 |
| 1987-06-02 | vs SDN | 49 | W 6-2 | 26-23 | 3 | 18,254 | Bryn Smith | Jimmy Jones | Bryn Smith | Jimmy Jones | | 230 | 229 | 1 |
| 1987-06-03 | vs SDN | 50 | W 4-3 | 27-23 | 3 | 16,921 | Neal Heaton | Andy Hawkins | Neal Heaton | Andy Hawkins | Tim Burke | 234 | 232 | 2 |
| 1987-06-04 | vs SDN | 51 | W 8-5 | 28-23 | 3 | 13,677 | Floyd Youmans | Dave Dravecky | Floyd Youmans | Storm Davis | Randy St. Claire | 242 | 237 | 5 |
| 1987-06-05 | @ PHI | 52 | L 6-7 | 28-24 | 3 | 26,508 | Jay Tibbs | Kevin Gross | Kevin Gross | Andy McGaffigan | Steve Bedrosian | 248 | 244 | 4 |
| 1987-06-06 | @ PHI | 53 | L 3-4 | 28-25 | 3 | 30,177 | Bob Sebra | Shane Rawley | Shane Rawley | Bob Sebra | | 251 | 248 | 3 |
| 1987-06-07 | @ PHI | 54 | L 1-3 | 28-26 | 3 | 43,298 | Bryn Smith | Michael Jackson | Michael Jackson | Bryn Smith | Steve Bedrosian | 252 | 251 | 1 |
| 1987-06-08 | vs PIT | 55 | W 7-1 | 29-26 | 3 | 11,973 | Neal Heaton | Brian Fisher | Neal Heaton | Brian Fisher | | 259 | 252 | 7 |
| 1987-06-09 | vs PIT | 56 | L 1-8 | 29-27 | 3 | 13,132 | Floyd Youmans | Mike Dunne | Mike Dunne | Lary Sorensen | | 260 | 260 | 0 |
| 1987-06-10 | vs PIT | 57 | W 4-3 | 30-27 | 3 | 10,134 | Dennis Martinez | Doug Drabek | Bob McClure | Don Robinson | | 264 | 263 | 1 |
| 1987-06-12 | vs PHI | 58 | W 13-6 | 31-27 | 3 | 20,031 | Bryn Smith | Shane Rawley | Bryn Smith | Shane Rawley | | 277 | 269 | 8 |
| 1987-06-13 | vs PHI | 59 | W 7-5 | 32-27 | 3 | 24,221 | Neal Heaton | Michael Jackson | Neal Heaton | Michael Jackson | Tim Burke | 284 | 274 | 10 |
| 1987-06-14 | vs PHI | 60 | L 6-11 | 32-28 | 3 | 30,209 | Lary Sorensen | Don Carman | Don Carman | Lary Sorensen | | 290 | 285 | 5 |
| 1987-06-15 | vs NYN | 61 | W 4-0 | 33-28 | 2 | 16,465 | Dennis Martinez | Dwight Gooden | Dennis Martinez | Dwight Gooden | | 294 | 285 | 9 |
| 1987-06-16 | vs NYN | 62 | L 3-7 | 33-29 | 3 | 20,132 | Bob Sebra | Terry Leach | Terry Leach | Bob Sebra | | 297 | 292 | 5 |
| 1987-06-17 | vs NYN | 63 | W 9-1 | 34-29 | 3 | 15,364 | Bryn Smith | Sid Fernandez | Bryn Smith | Sid Fernandez | | 306 | 293 | 13 |
| 1987-06-18 | vs NYN | 64 | L 7-10 | 34-30 | 3 | 19,313 | Neal Heaton | Ron Darling | Doug Sisk | Neal Heaton | Roger McDowell | 313 | 303 | 10 |
| 1987-06-19 | @ SLN | 65 | W 8-7 | 35-30 | 3 | 41,447 | Jeff Fischer | Danny Cox | Bob McClure | Bill Dawley | Lary Sorensen | 321 | 310 | 11 |
| 1987-06-20 | @ SLN | 66 | W 7-5 | 36-30 | 2 | 47,616 | Dennis Martinez | Greg Mathews | Jeff Parrett | Todd Worrell | | 328 | 315 | 13 |
| 1987-06-21 | @ SLN | 67 | L 3-7 | 36-31 | 3 | 43,052 | Bob Sebra | Joe Magrane | Joe Magrane | Bob Sebra | Bill Dawley | 331 | 322 | 9 |
| 1987-06-23 | @ PIT | 68 | W 8-2 | 37-31 | 3 | 9,276 | Neal Heaton | Bob Kipper | Neal Heaton | Bob Kipper | Jeff Parrett | 339 | 324 | 15 |
| 1987-06-24 | @ PIT | 69 | L 6-9 | 37-32 | 3 | 21,564 | Jeff Fischer | Brian Fisher | Brian Fisher | Jeff Fischer | | 345 | 333 | 12 |
| 1987-06-25 | @ PIT | 70 | W 7-2 | 38-32 | 2 | 10,836 | Dennis Martinez | Mike Dunne | Dennis Martinez | Mike Dunne | Andy McGaffigan | 352 | 335 | 17 |
| 1987-06-26 | vs SLN | 71 | W 5-1 | 39-32 | 2 | 25,799 | Bob Sebra | Joe Magrane | Bob Sebra | Joe Magrane | | 357 | 336 | 21 |
| 1987-06-27 | vs SLN | 72 | L 5-15 | 39-33 | 2 | 35,346 | Bryn Smith | Bob Forsch | Bob Forsch | Bryn Smith | Ricky Horton | 362 | 351 | 11 |
| 1987-06-28 | vs SLN | 73 | L 6-7 | 39-34 | 2 | 36,109 | Neal Heaton | Lee Tunnell | Ken Dayley | Jeff Parrett | | 368 | 358 | 10 |
| 1987-06-29 | vs CHN | 74 | L 5-9 | 39-35 | 2 | 15,117 | Lary Sorensen | Les Lancaster | Les Lancaster | Lary Sorensen | Ed Lynch | 373 | 367 | 6 |
| 1987-06-30 | vs CHN | 75 | W 5-4 | 40-35 | 2 | 13,777 | Dennis Martinez | Steve Trout | Dennis Martinez | Steve Trout | Jeff Parrett | 378 | 371 | 7 |
| 1987-07-01 | vs CHN | 76 | L 0-1 | 40-36 | 3 | 15,740 | Bob Sebra | Greg Maddux | Greg Maddux | Bob Sebra | | 378 | 372 | 6 |
| 1987-07-03 | vs SDN | 77 | W 2-1 | 41-36 | 3 | 21,193 | Floyd Youmans | Andy Hawkins | Floyd Youmans | Andy Hawkins | Jeff Parrett | 380 | 373 | 7 |
| 1987-07-04 | vs SDN | 78 | W 4-3 | 42-36 | 2 | 20,905 | Neal Heaton | Ed Whitson | Tim Burke | Rich Gossage | | 384 | 376 | 8 |
| 1987-07-05 | vs SDN | 79 | L 2-3 | 42-37 | 2 | 20,563 | Bryn Smith | Jimmy Jones | Rich Gossage | Jeff Parrett | | 386 | 379 | 7 |
| 1987-07-06 | @ HOU | 80 | L 3-9 | 42-38 | 2 | 17,312 | Dennis Martinez | Danny Darwin | Danny Darwin | Dennis Martinez | | 389 | 388 | 1 |
| 1987-07-07 | @ HOU | 81 | W 2-0 | 43-38 | 3 | 18,849 | Bob Sebra | Bob Knepper | Bob Sebra | Bob Knepper | | 391 | 388 | 3 |
| 1987-07-08 | @ HOU | 82 | W 1-0 | 44-38 | 2 | 17,776 | Floyd Youmans | Nolan Ryan | Floyd Youmans | Nolan Ryan | | 392 | 388 | 4 |
| 1987-07-09 | @ CIN | 83 | L 2-7 | 44-39 | 3 | 19,068 | Neal Heaton | Bill Gullickson | Bill Gullickson | Neal Heaton | | 394 | 395 | -1 |
| 1987-07-10 | @ CIN | 84 | W 5-1 | 45-39 | 2 | 29,310 | Bryn Smith | Tom Browning | Bryn Smith | Tom Browning | | 399 | 396 | 3 |
| 1987-07-11 | @ CIN | 85 | W 11-5 | 46-39 | 2 | 37,942 | Dennis Martinez | Ted Power | Dennis Martinez | Ted Power | Tim Burke | 410 | 401 | 9 |
| 1987-07-12 | @ CIN | 86 | W 4-2 | 47-39 | 2 | 34,790 | Bob Sebra | Guy Hoffman | Bob Sebra | Guy Hoffman | Andy McGaffigan | 414 | 403 | 11 |
| 1987-07-16 | vs ATL | 87 | W 2-0 | 48-39 | 2 | 23,410 | Floyd Youmans | Doyle Alexander | Floyd Youmans | Doyle Alexander | | 416 | 403 | 13 |
| 1987-07-17 | vs ATL | 88 | W 5-4 | 49-39 | 2 | 21,576 | Bob Sebra | Zane Smith | Tim Burke | Jim Acker | Bob McClure | 421 | 407 | 14 |
| 1987-07-18 | vs ATL | 89 | W 3-2 | 50-39 | 2 | 23,547 | Bryn Smith | Charlie Puleo | Jeff Parrett | Gene Garber | | 424 | 409 | 15 |
| 1987-07-19 | vs ATL | 90 | W 2-1 | 51-39 | 2 | 38,341 | Neal Heaton | Rick Mahler | Andy McGaffigan | Jim Acker | | 426 | 410 | 16 |
| 1987-07-20 | vs HOU | 91 | W 4-1 | 52-39 | 2 | 26,346 | Dennis Martinez | Jim Deshaies | Dennis Martinez | Jim Deshaies | | 430 | 411 | 19 |
| 1987-07-21 | vs HOU | 92 | L 2-4 | 52-40 | 2 | 30,708 | Floyd Youmans | Danny Darwin | Danny Darwin | Floyd Youmans | Dave Smith | 432 | 415 | 17 |
| 1987-07-22 | vs HOU | 93 | L 0-7 | 52-41 | 2 | 16,869 | Bob Sebra | Mike Scott | Mike Scott | Bob Sebra | | 432 | 422 | 10 |
| 1987-07-23 | vs CIN | 94 | L 4-8 | 52-42 | 2 | 21,361 | Bryn Smith | Ted Power | Ted Power | Bryn Smith | | 436 | 430 | 6 |
| 1987-07-24 | vs CIN | 95 | W 3-2 | 53-42 | 2 | 20,496 | Neal Heaton | Guy Hoffman | Neal Heaton | Guy Hoffman | Tim Burke | 439 | 432 | 7 |
| 1987-07-25 | vs CIN | 96 | W 4-3 | 54-42 | 2 | 30,113 | Dennis Martinez | Ron Robinson | Andy McGaffigan | Bill Landrum | | 443 | 435 | 8 |
| 1987-07-26 | vs CIN | 97 | W 6-0 | 55-42 | 2 | 37,989 | Floyd Youmans | Bill Gullickson | Floyd Youmans | Bill Gullickson | | 449 | 435 | 14 |
| 1987-07-28 | @ CHN | 98 | L 3-8 | 55-43 | 2 | 35,299 | Bob Sebra | Rick Sutcliffe | Rick Sutcliffe | Andy McGaffigan | Lee Smith | 452 | 443 | 9 |
| 1987-07-29 | @ CHN | 99 | W 11-3 | 56-43 | 2 | 37,019 | Bryn Smith | Greg Maddux | Bryn Smith | Greg Maddux | | 463 | 446 | 17 |
| 1987-07-30 | @ CHN | 100 | W 6-1 | 57-43 | 2 | 28,128 | Neal Heaton | Bob Tewksbury | Neal Heaton | Bob Tewksbury | | 469 | 447 | 22 |
| 1987-07-31 | vs NYN | 101 | W 13-3 | 58-43 | 2 | 35,249 | Dennis Martinez | John Mitchell | Dennis Martinez | John Mitchell | | 482 | 450 | 32 |
| 1987-08-01 | vs NYN | 102 | L 4-12 | 58-44 | 2 | 41,411 | Floyd Youmans | Terry Leach | Terry Leach | Floyd Youmans | | 486 | 462 | 24 |
| 1987-08-02 | vs NYN | 103 | L 4-7 | 58-45 | 2 | 45,640 | Bob Sebra | Ron Darling | Ron Darling | Bob Sebra | Roger McDowell | 490 | 469 | 21 |
| 1987-08-03 | vs SLN | 104 | L 2-5 | 58-46 | 3 | 33,424 | Bryn Smith | Ricky Horton | Ricky Horton | Bryn Smith | Todd Worrell | 492 | 474 | 18 |
| 1987-08-04 | vs SLN | 105 | W 10-5 | 59-46 | 3 | 35,555 | Neal Heaton | Greg Mathews | Bob McClure | Lee Tunnell | Jeff Parrett | 502 | 479 | 23 |
| 1987-08-05 | vs SLN | 106 | W 2-1 | 60-46 | 3 | 26,378 | Dennis Martinez | Bob Forsch | Randy St. Claire | Ken Dayley | | 504 | 480 | 24 |
| 1987-08-06 | @ PIT | 107 | W 6-3 | 61-46 | 3 | 7,755 | Floyd Youmans | Rick Reuschel | Jeff Parrett | Jim Gott | Tim Burke | 510 | 483 | 27 |
| 1987-08-07 | @ PIT | 108 | L 3-9 | 61-47 | 3 | 22,075 | Bob Sebra | Bob Walk | Bob Walk | Bob Sebra | Brett Gideon | 513 | 492 | 21 |
| 1987-08-08 | @ PIT | 109 | L 2-5 | 61-48 | 3 | 18,285 | Bryn Smith | Doug Drabek | Doug Drabek | Bryn Smith | John Smiley | 515 | 497 | 18 |
| 1987-08-09 | @ PIT | 110 | L 3-4 | 61-49 | 3 | 18,829 | Neal Heaton | Mike Dunne | Mike Dunne | Jeff Parrett | Jim Gott | 518 | 501 | 17 |
| 1987-08-10 | @ NYN | 111 | W 2-1 | 62-49 | 3 | 37,915 | Dennis Martinez | John Mitchell | Dennis Martinez | John Mitchell | Tim Burke | 520 | 502 | 18 |
| 1987-08-11 | @ NYN | 112 | L 2-6 | 62-50 | 3 | 42,497 | Floyd Youmans | Terry Leach | Terry Leach | Floyd Youmans | | 522 | 508 | 14 |
| 1987-08-12 | @ NYN | 113 | L 2-4 | 62-51 | 3 | 40,313 | Bob Sebra | Ron Darling | Ron Darling | Bob Sebra | Roger McDowell | 524 | 512 | 12 |
| 1987-08-13 | vs PIT | 114 | W 9-7 | 63-51 | 3 | 23,609 | Bryn Smith | Doug Drabek | Andy McGaffigan | Brett Gideon | Bob McClure | 533 | 519 | 14 |
| 1987-08-14 | vs PIT | 115 | W 4-3 | 64-51 | 3 | 20,501 | Neal Heaton | Mike Dunne | Bob McClure | John Smiley | | 537 | 522 | 15 |
| 1987-08-15 | vs PIT | 116 | W 6-3 | 65-51 | 2 | 23,894 | Dennis Martinez | Brian Fisher | Tim Burke | Brian Fisher | | 543 | 525 | 18 |
| 1987-08-16 | vs PIT | 117 | W 10-7 | 66-51 | 2 | 26,134 | Floyd Youmans | Rick Reuschel | Jeff Parrett | Brett Gideon | | 553 | 532 | 21 |
| 1987-08-18 | vs LAN | 118 | W 2-1 | 67-51 | 2 | 30,349 | Bob Sebra | Orel Hershiser | Tim Burke | Orel Hershiser | Bob McClure | 555 | 533 | 22 |
| 1987-08-19 | vs LAN | 119 | L 9-10 | 67-52 | 2 | 27,172 | Bryn Smith | Shawn Hillegas | Alejandro Pena | Jeff Parrett | Tim Crews | 564 | 543 | 21 |
| 1987-08-20 | vs LAN | 120 | L 2-7 | 67-53 | 3 | 25,681 | Neal Heaton | Fernando Valenzuela | Fernando Valenzuela | Neal Heaton | Matt Young | 566 | 550 | 16 |
| 1987-08-21 | vs SFN | 121 | L 3-6 | 67-54 | 3 | 30,294 | Dennis Martinez | Dave Dravecky | Dave Dravecky | Dennis Martinez | Don Robinson | 569 | 556 | 13 |
| 1987-08-22 | vs SFN | 122 | W 5-4 | 68-54 | 2 | 33,294 | Pascual Perez | Mike LaCoss | Tim Burke | Craig Lefferts | | 574 | 560 | 14 |
| 1987-08-23 | vs SFN | 123 | L 3-5 | 68-55 | 3 | 35,250 | Bob Sebra | Atlee Hammaker | Kelly Downs | Bob Sebra | Don Robinson | 577 | 565 | 12 |
| 1987-08-25 | @ SDN | 124 | L 1-5 | 68-56 | 3 | 12,105 | Neal Heaton | Mark Grant | Mark Grant | Neal Heaton | Lance McCullers | 578 | 570 | 8 |
| 1987-08-26 | @ SDN | 125 | W 6-5 | 69-56 | 3 | 11,108 | Dennis Martinez | Eric Show | Tim Burke | Lance McCullers | Bob McClure | 584 | 575 | 9 |
| 1987-08-27 | @ SDN | 126 | W 3-0 | 70-56 | 3 | 8,446 | Bryn Smith | Jimmy Jones | Bryn Smith | Jimmy Jones | Andy McGaffigan | 587 | 575 | 12 |
| 1987-08-28 | @ LAN | 127 | W 2-1 | 71-56 | 3 | 30,917 | Pascual Perez | Orel Hershiser | Tim Burke | Tim Leary | Bob McClure | 589 | 576 | 13 |
| 1987-08-29 | @ LAN | 128 | W 6-5 | 72-56 | 2 | 40,765 | Bob Sebra | Shawn Hillegas | Andy McGaffigan | Tim Crews | | 595 | 581 | 14 |
| 1987-08-30 | @ LAN | 129 | W 5-4 | 73-56 | 2 | 27,360 | Neal Heaton | Fernando Valenzuela | Jeff Parrett | Fernando Valenzuela | Tim Burke | 600 | 585 | 15 |
| 1987-08-31 | @ SFN | 130 | L 0-5 | 73-57 | 3 | 13,633 | Dennis Martinez | Dave Dravecky | Dave Dravecky | Dennis Martinez | | 600 | 590 | 10 |
| 1987-09-01 | @ SFN | 131 | L 4-14 | 73-58 | 3 | 14,644 | Floyd Youmans | Rick Reuschel | Rick Reuschel | Floyd Youmans | | 604 | 604 | 0 |
| 1987-09-02 | @ SFN | 132 | W 7-3 | 74-58 | 3 | 18,154 | Pascual Perez | Mike LaCoss | Pascual Perez | Mike LaCoss | Tim Burke | 611 | 607 | 4 |
| 1987-09-04 | @ ATL | 133 | L 4-7 | 74-59 | 3 | 4,886 | Neal Heaton | David Palmer | Rick Mahler | Neal Heaton | | 615 | 614 | 1 |
| 1987-09-05 | @ ATL | 134 | W 4-1 | 75-59 | 3 | 11,805 | Dennis Martinez | Kevin Coffman | Dennis Martinez | Kevin Coffman | Tim Burke | 619 | 615 | 4 |
| 1987-09-06 | @ ATL | 135 | W 5-2 | 76-59 | 3 | 8,617 | Floyd Youmans | Zane Smith | Floyd Youmans | Zane Smith | Joe Hesketh | 624 | 617 | 7 |
| 1987-09-07 | vs SLN | 136 | W 9-2 | 77-59 | 3 | 50,342 | Pascual Perez | Danny Cox | Pascual Perez | Danny Cox | | 633 | 619 | 14 |
| 1987-09-08 | vs SLN | 137 | W 4-1 | 78-59 | 3 | 35,672 | Bryn Smith | Bob Forsch | Bryn Smith | Bob Forsch | Andy McGaffigan | 637 | 620 | 17 |
| 1987-09-09 | vs SLN | 138 | W 8-3 | 79-59 | 3 | 33,173 | Dennis Martinez | Joe Magrane | Dennis Martinez | Joe Magrane | | 645 | 623 | 22 |
| 1987-09-11 | @ CHN | 139 | L 4-8 | 79-60 | 3 | 10,174 | Floyd Youmans | Les Lancaster | Les Lancaster | Floyd Youmans | | 649 | 631 | 18 |
| 1987-09-12 | @ CHN | 140 | W 7-1 | 80-60 | 2 | 25,681 | Pascual Perez | Jamie Moyer | Pascual Perez | Jamie Moyer | | 656 | 632 | 24 |
| 1987-09-13 | @ CHN | 141 | L 2-5 | 80-61 | 3 | 25,444 | Bryn Smith | Rick Sutcliffe | Rick Sutcliffe | Bryn Smith | | 658 | 637 | 21 |
| 1987-09-14 | @ PIT | 142 | W 6-4 | 81-61 | 3 | 5,869 | Dennis Martinez | Vicente Palacios | Andy McGaffigan | Brett Gideon | Jeff Parrett | 664 | 641 | 23 |
| 1987-09-15 | @ PIT | 143 | L 1-5 | 81-62 | 3 | 5,852 | Neal Heaton | Mike Bielecki | Mike Bielecki | Neal Heaton | | 665 | 646 | 19 |
| 1987-09-16 | vs NYN | 144 | L 0-10 | 81-63 | 3 | 31,859 | Charlie Lea | Dwight Gooden | Dwight Gooden | Charlie Lea | | 665 | 656 | 9 |
| 1987-09-17 | vs NYN | 145 | W 4-1 | 82-63 | 3 | 24,806 | Pascual Perez | David Cone | Pascual Perez | David Cone | | 669 | 657 | 12 |
| 1987-09-18 | vs PHI | 146 | W 6-3 | 83-63 | 3 | 23,466 | Bryn Smith | Bruce Ruffin | Bryn Smith | Bruce Ruffin | | 675 | 660 | 15 |
| 1987-09-19 | vs PHI | 147 | W 12-4 | 84-63 | 3 | 33,072 | Dennis Martinez | Shane Rawley | Dennis Martinez | Shane Rawley | Jeff Parrett | 687 | 664 | 23 |
| 1987-09-20 | vs PHI | 148 | L 1-4 | 84-64 | 3 | 35,082 | Neal Heaton | Kevin Gross | Kevin Gross | Neal Heaton | Steve Bedrosian | 688 | 668 | 20 |
| 1987-09-21 | vs PIT | 149 | L 2-5 | 84-65 | 3 | 13,206 | Bob Sebra | Doug Drabek | Doug Drabek | Bob Sebra | Jeff Robinson | 690 | 673 | 17 |
| 1987-09-22 | vs PIT | 150 | W 4-3 | 85-65 | 3 | 16,407 | Pascual Perez | Mike Dunne | Pascual Perez | Jim Gott | Tim Burke | 694 | 676 | 18 |
| 1987-09-23 | @ NYN | 151 | L 3-4 | 85-66 | 3 | 41,050 | Bryn Smith | John Candelaria | John Candelaria | Bryn Smith | Roger McDowell | 697 | 680 | 17 |
| 1987-09-24 | @ NYN | 152 | W 5-4 | 86-66 | 3 | 40,555 | Dennis Martinez | Rick Aguilera | Dennis Martinez | Rick Aguilera | Randy St. Claire | 702 | 684 | 18 |
| 1987-09-25 | @ PHI | 153 | L 2-4 | 86-67 | 3 | 16,641 | Neal Heaton | Don Carman | Don Carman | Neal Heaton | Steve Bedrosian | 704 | 688 | 16 |
| 1987-09-26 | @ PHI | 154 | W 7-4 | 87-67 | 3 | 27,453 | Pascual Perez | Shane Rawley | Pascual Perez | Shane Rawley | Andy McGaffigan | 711 | 692 | 19 |
| 1987-09-27 | @ PHI | 155 | W 5-3 | 88-67 | 3 | 33,662 | Jay Tibbs | Bruce Ruffin | Jeff Parrett | Michael Jackson | Tim Burke | 716 | 695 | 21 |
| 1987-09-29 | @ SLN | 156 | L 0-1 | 88-69 | 3 | 0 | Dennis Martinez | Joe Magrane | Joe Magrane | Dennis Martinez | | 716 | 696 | 20 |
| 1987-09-29 | @ SLN | 157 | L 0-3 | 88-69 | 3 | 48,142 | Bryn Smith | Greg Mathews | Greg Mathews | Bryn Smith | Todd Worrell | 716 | 699 | 17 |
| 1987-09-30 | @ SLN | 158 | W 6-1 | 89-69 | 3 | 43,236 | Pascual Perez | Bob Forsch | Pascual Perez | Bob Forsch | Tim Burke | 722 | 700 | 22 |
| 1987-10-01 | @ SLN | 159 | L 2-8 | 89-70 | 3 | 48,763 | Jay Tibbs | Danny Cox | Danny Cox | Jay Tibbs | | 724 | 708 | 16 |
| 1987-10-02 | vs CHN | 160 | W 7-1 | 90-70 | 2 | 13,301 | Neal Heaton | Greg Maddux | Neal Heaton | Greg Maddux | Andy McGaffigan | 731 | 709 | 22 |
| 1987-10-03 | vs CHN | 161 | W 5-4 | 91-70 | 2 | 15,517 | Bob Sebra | Les Lancaster | Jeff Parrett | Les Lancaster | Tim Burke | 736 | 713 | 23 |
| 1987-10-04 | vs CHN | 162 | L 5-7 | 91-71 | 3 | 29,487 | Pascual Perez | Jamie Moyer | Jamie Moyer | Jeff Parrett | Lee Smith | 741 | 720 | 21 |