| 1989-04-04 | vs DET | 1 | W 4-0 | 1-0 | 3 | 40,375 | Charlie Hough | Jack Morris | Charlie Hough | Jack Morris | | 4 | 0 | 4 |
| 1989-04-06 | vs DET | 2 | W 5-4 | 2-0 | 2 | 25,735 | Nolan Ryan | Jeff Robinson | Cecilio Guante | Frank Williams | Jeff Russell | 9 | 4 | 5 |
| 1989-04-07 | vs TOR | 3 | L 9-10 | 2-1 | 5 | 22,914 | Bobby Witt | Jeff Musselman | Tony Castillo | Cecilio Guante | Tom Henke | 18 | 14 | 4 |
| 1989-04-08 | vs TOR | 4 | W 5-4 | 3-1 | 4 | 26,073 | Jamie Moyer | Jimmy Key | Jamie Moyer | Jimmy Key | Jeff Russell | 23 | 18 | 5 |
| 1989-04-09 | vs TOR | 5 | W 3-2 | 4-1 | 1 | 19,498 | Kevin Brown | John Cerutti | Kenny Rogers | Tom Henke | | 26 | 20 | 6 |
| 1989-04-10 | @ MIL | 6 | W 6-4 | 5-1 | 1 | 54,301 | Charlie Hough | Chris Bosio | Jeff Russell | Chuck Crim | | 32 | 24 | 8 |
| 1989-04-12 | @ MIL | 7 | W 8-1 | 6-1 | 1 | 7,590 | Nolan Ryan | Bill Wegman | Nolan Ryan | Bill Wegman | | 40 | 25 | 15 |
| 1989-04-13 | @ MIL | 8 | W 6-1 | 7-1 | 1 | 7,266 | Bobby Witt | Don August | Bobby Witt | Don August | | 46 | 26 | 20 |
| 1989-04-14 | @ DET | 9 | W 4-2 | 8-1 | 1 | 12,384 | Jamie Moyer | Doyle Alexander | Jamie Moyer | Frank Williams | Jeff Russell | 50 | 28 | 22 |
| 1989-04-15 | @ DET | 10 | W 4-1 | 9-1 | 1 | 17,250 | Kevin Brown | Frank Tanana | Kevin Brown | Frank Tanana | | 54 | 29 | 25 |
| 1989-04-16 | @ DET | 11 | W 9-6 | 10-1 | 1 | 16,030 | Charlie Hough | Jack Morris | Charlie Hough | Jack Morris | Jeff Russell | 63 | 35 | 28 |
| 1989-04-17 | vs MIL | 12 | L 1-8 | 10-2 | 1 | 38,274 | Nolan Ryan | Bill Wegman | Bill Wegman | Nolan Ryan | Dan Plesac | 64 | 43 | 21 |
| 1989-04-18 | vs MIL | 13 | W 6-2 | 11-2 | 1 | 21,528 | Bobby Witt | Don August | Bobby Witt | Don August | | 70 | 45 | 25 |
| 1989-04-19 | vs MIL | 14 | W 5-1 | 12-2 | 1 | 19,444 | Jamie Moyer | Mike Birkbeck | Jamie Moyer | Mike Birkbeck | Cecilio Guante | 75 | 46 | 29 |
| 1989-04-21 | @ TOR | 15 | L 3-6 | 12-3 | 1 | 22,186 | Kevin Brown | Dave Stieb | Dave Stieb | Kevin Brown | Duane Ward | 78 | 52 | 26 |
| 1989-04-22 | @ TOR | 16 | L 2-4 | 12-4 | 1 | 27,278 | Charlie Hough | Mike Flanagan | Duane Ward | Charlie Hough | | 80 | 56 | 24 |
| 1989-04-23 | @ TOR | 17 | W 4-1 | 13-4 | 1 | 31,473 | Nolan Ryan | Todd Stottlemyre | Nolan Ryan | Todd Stottlemyre | | 84 | 57 | 27 |
| 1989-04-25 | @ CLE | 18 | W 11-7 | 14-4 | 1 | 6,585 | Bobby Witt | Rich Yett | Bobby Witt | Scott Bailes | Brad Arnsberg | 95 | 64 | 31 |
| 1989-04-26 | @ CLE | 19 | W 3-2 | 15-4 | 1 | 5,457 | Jamie Moyer | Greg Swindell | Jeff Russell | Doug Jones | | 98 | 66 | 32 |
| 1989-04-28 | vs BOS | 20 | W 7-6 | 16-4 | 1 | 35,440 | Kevin Brown | Mike Boddicker | Cecilio Guante | Rob Murphy | | 105 | 72 | 33 |
| 1989-04-29 | vs BOS | 21 | L 5-8 | 16-5 | 1 | 41,050 | Charlie Hough | Wes Gardner | Wes Gardner | Charlie Hough | Lee Smith | 110 | 80 | 30 |
| 1989-04-30 | vs BOS | 22 | W 2-1 | 17-5 | 1 | 40,429 | Nolan Ryan | Roger Clemens | Nolan Ryan | Roger Clemens | Jeff Russell | 112 | 81 | 31 |
| 1989-05-01 | vs CLE | 23 | L 1-11 | 17-6 | 1 | 30,192 | Bobby Witt | Rich Yett | Rich Yett | Bobby Witt | Keith Atherton | 113 | 92 | 21 |
| 1989-05-02 | vs CLE | 24 | L 3-8 | 17-7 | 1 | 12,772 | Jamie Moyer | Greg Swindell | Greg Swindell | Jamie Moyer | | 116 | 100 | 16 |
| 1989-05-03 | vs NYA | 25 | W 4-1 | 18-7 | 1 | 18,898 | Kevin Brown | Andy Hawkins | Kevin Brown | Andy Hawkins | | 120 | 101 | 19 |
| 1989-05-04 | vs NYA | 26 | L 7-11 | 18-8 | 1 | 26,856 | Charlie Hough | Dave LaPoint | Dave LaPoint | Charlie Hough | | 127 | 112 | 15 |
| 1989-05-05 | @ BOS | 27 | L 6-7 | 18-9 | 2 | 32,555 | Nolan Ryan | Roger Clemens | Roger Clemens | Nolan Ryan | Bob Stanley | 133 | 119 | 14 |
| 1989-05-06 | @ BOS | 28 | L 0-7 | 18-10 | 2 | 31,508 | Bobby Witt | Mike Smithson | Mike Smithson | Bobby Witt | | 133 | 126 | 7 |
| 1989-05-07 | @ BOS | 29 | L 5-9 | 18-11 | 3 | 33,067 | Jamie Moyer | John Dopson | John Dopson | Jamie Moyer | Lee Smith | 138 | 135 | 3 |
| 1989-05-08 | @ NYA | 30 | W 13-2 | 19-11 | 3 | 18,163 | Kevin Brown | Andy Hawkins | Kevin Brown | Andy Hawkins | | 151 | 137 | 14 |
| 1989-05-09 | @ NYA | 31 | L 3-5 | 19-12 | 4 | 21,978 | Charlie Hough | Dave LaPoint | Dave LaPoint | Charlie Hough | Dave Righetti | 154 | 142 | 12 |
| 1989-05-11 | @ KCA | 32 | W 6-3 | 20-12 | 3 | 31,556 | Nolan Ryan | Mark Gubicza | Nolan Ryan | Mark Gubicza | | 160 | 145 | 15 |
| 1989-05-12 | @ KCA | 33 | L 3-4 | 20-13 | 4 | 30,290 | Bobby Witt | Charlie Leibrandt | Charlie Leibrandt | Bobby Witt | Steve Farr | 163 | 149 | 14 |
| 1989-05-13 | @ KCA | 34 | L 1-4 | 20-14 | 4 | 39,163 | Jamie Moyer | Luis Aquino | Luis Aquino | Jamie Moyer | Steve Farr | 164 | 153 | 11 |
| 1989-05-14 | @ KCA | 35 | L 2-3 | 20-15 | 4 | 27,726 | Kevin Brown | Bret Saberhagen | Jeff Montgomery | Cecilio Guante | | 166 | 156 | 10 |
| 1989-05-17 | vs BAL | 36 | L 2-8 | 20-16 | 4 | 12,558 | Charlie Hough | Dave J. Schmidt | Dave J. Schmidt | Charlie Hough | | 168 | 164 | 4 |
| 1989-05-18 | vs MIN | 37 | W 6-5 | 21-16 | 4 | 19,868 | Nolan Ryan | Shane Rawley | Jeff Russell | German Gonzalez | | 174 | 169 | 5 |
| 1989-05-19 | vs MIN | 38 | W 4-2 | 22-16 | 4 | 31,195 | Jamie Moyer | Frank Viola | Kenny Rogers | Frank Viola | Jeff Russell | 178 | 171 | 7 |
| 1989-05-20 | vs MIN | 39 | L 3-19 | 22-17 | 4 | 40,482 | Bobby Witt | Roy Smith | Roy Smith | Bobby Witt | | 181 | 190 | -9 |
| 1989-05-21 | vs MIN | 40 | L 1-6 | 22-18 | 4 | 40,299 | Kevin Brown | Francisco Oliveras | Francisco Oliveras | Jeff Russell | Juan Berenguer | 182 | 196 | -14 |
| 1989-05-22 | vs KCA | 41 | W 4-1 | 23-18 | 4 | 25,618 | Charlie Hough | Charlie Leibrandt | Charlie Hough | Charlie Leibrandt | Jeff Russell | 186 | 197 | -11 |
| 1989-05-23 | vs KCA | 42 | W 10-8 | 24-18 | 3 | 20,054 | Nolan Ryan | Luis Aquino | Nolan Ryan | Luis Aquino | Jeff Russell | 196 | 205 | -9 |
| 1989-05-24 | vs KCA | 43 | L 4-6 | 24-19 | 4 | 18,905 | Jamie Moyer | Bret Saberhagen | Bret Saberhagen | Jamie Moyer | Tom Gordon | 200 | 211 | -11 |
| 1989-05-26 | @ MIN | 44 | W 5-3 | 25-19 | 4 | 33,112 | Bobby Witt | Roy Smith | Bobby Witt | Roy Smith | Jeff Russell | 205 | 214 | -9 |
| 1989-05-27 | @ MIN | 45 | W 5-3 | 26-19 | 4 | 30,893 | Kevin Brown | Allan Anderson | Kevin Brown | Allan Anderson | | 210 | 217 | -7 |
| 1989-05-28 | @ MIN | 46 | W 8-6 | 27-19 | 4 | 28,722 | Charlie Hough | Shane Rawley | Cecilio Guante | Jeff Reardon | Jeff Russell | 218 | 223 | -5 |
| 1989-05-29 | @ BAL | 47 | L 1-6 | 27-20 | 4 | 32,263 | Nolan Ryan | Brian Holton | Brian Holton | Nolan Ryan | | 219 | 229 | -10 |
| 1989-05-30 | @ BAL | 48 | L 2-6 | 27-21 | 4 | 19,044 | Jamie Moyer | Jay Tibbs | Mark Williamson | Jamie Moyer | Gregg Olson | 221 | 235 | -14 |
| 1989-05-31 | @ BAL | 49 | L 5-8 | 27-22 | 4 | 25,236 | Bobby Witt | Jeff Ballard | Mark Williamson | Bobby Witt | Gregg Olson | 226 | 243 | -17 |
| 1989-06-01 | @ SEA | 50 | L 2-3 | 27-23 | 4 | 3,558 | Kevin Brown | Scott Bankhead | Mike Schooler | Kevin Brown | | 228 | 246 | -18 |
| 1989-06-02 | @ SEA | 51 | W 9-5 | 28-23 | 4 | 11,797 | Mike Jeffcoat | Bill Swift | Mike Jeffcoat | Bill Swift | Cecilio Guante | 237 | 251 | -14 |
| 1989-06-03 | @ SEA | 52 | W 6-1 | 29-23 | 4 | 24,601 | Nolan Ryan | Clint Zavaras | Nolan Ryan | Clint Zavaras | | 243 | 252 | -9 |
| 1989-06-04 | @ SEA | 53 | L 1-2 | 29-24 | 4 | 11,784 | Charlie Hough | Randy Johnson | Randy Johnson | Charlie Hough | Mike Schooler | 244 | 254 | -10 |
| 1989-06-05 | vs CHA | 54 | W 4-2 | 30-24 | 4 | 28,607 | Bobby Witt | Greg Hibbard | Bobby Witt | Greg Hibbard | Jeff Russell | 248 | 256 | -8 |
| 1989-06-06 | vs CHA | 55 | W 3-1 | 31-24 | 4 | 13,486 | Kevin Brown | Melido Perez | Kevin Brown | Melido Perez | Jeff Russell | 251 | 257 | -6 |
| 1989-06-07 | vs CHA | 56 | L 4-6 | 31-25 | 4 | 12,257 | Mike Jeffcoat | Steve Rosenberg | Ken Patterson | Cecilio Guante | Bobby Thigpen | 255 | 263 | -8 |
| 1989-06-08 | vs CHA | 57 | W 11-7 | 32-25 | 4 | 27,669 | Nolan Ryan | Eric King | Nolan Ryan | Eric King | Jeff Russell | 266 | 270 | -4 |
| 1989-06-09 | vs OAK | 58 | W 11-8 | 33-25 | 4 | 35,799 | Charlie Hough | Dave Stewart | Cecilio Guante | Gene Nelson | Jeff Russell | 277 | 278 | -1 |
| 1989-06-10 | vs OAK | 59 | L 1-5 | 33-26 | 4 | 40,796 | Bobby Witt | Storm Davis | Storm Davis | Bobby Witt | | 278 | 283 | -5 |
| 1989-06-11 | vs OAK | 60 | L 1-5 | 33-27 | 4 | 32,127 | Kevin Brown | Mike Moore | Mike Moore | Kevin Brown | Gene Nelson | 279 | 288 | -9 |
| 1989-06-12 | vs CAL | 61 | W 4-0 | 34-27 | 4 | 18,960 | Mike Jeffcoat | Mike Witt | Mike Jeffcoat | Mike Witt | | 283 | 288 | -5 |
| 1989-06-14 | vs CAL | 62 | W 5-1 | 36-27 | 4 | 0 | Nolan Ryan | Chuck Finley | Nolan Ryan | Chuck Finley | Jeff Russell | 288 | 289 | -1 |
| 1989-06-14 | vs CAL | 63 | W 6-3 | 36-27 | 4 | 40,159 | Charlie Hough | Kirk McCaskill | Charlie Hough | Kirk McCaskill | Jeff Russell | 294 | 292 | 2 |
| 1989-06-16 | @ NYA | 64 | L 3-8 | 36-29 | 4 | 0 | Bobby Witt | Andy Hawkins | Andy Hawkins | Bobby Witt | | 297 | 300 | -3 |
| 1989-06-16 | @ NYA | 65 | L 1-6 | 36-29 | 4 | 28,372 | Kevin Brown | Jimmy Jones | Jimmy Jones | Kevin Brown | | 298 | 306 | -8 |
| 1989-06-17 | @ NYA | 66 | L 3-5 | 36-30 | 4 | 38,917 | Mike Jeffcoat | Dave Eiland | Dave Eiland | Mike Jeffcoat | Dave Righetti | 301 | 311 | -10 |
| 1989-06-18 | @ NYA | 67 | W 5-2 | 37-30 | 4 | 42,825 | Charlie Hough | Dave LaPoint | Charlie Hough | Dave LaPoint | | 306 | 313 | -7 |
| 1989-06-20 | @ BOS | 68 | L 3-6 | 37-31 | 4 | 34,443 | Nolan Ryan | Mike Boddicker | Mike Boddicker | Jeff Russell | Lee Smith | 309 | 319 | -10 |
| 1989-06-21 | @ BOS | 69 | W 10-3 | 38-31 | 4 | 34,338 | Bobby Witt | Roger Clemens | Gary Mielke | Roger Clemens | | 319 | 322 | -3 |
| 1989-06-22 | @ BOS | 70 | W 9-1 | 39-31 | 4 | 34,000 | Kevin Brown | Mike Smithson | Kevin Brown | Mike Smithson | | 328 | 323 | 5 |
| 1989-06-23 | vs CLE | 71 | W 4-0 | 40-31 | 4 | 25,490 | Mike Jeffcoat | Scott Bailes | Mike Jeffcoat | Scott Bailes | | 332 | 323 | 9 |
| 1989-06-24 | vs CLE | 72 | L 3-7 | 40-32 | 4 | 39,496 | Charlie Hough | Greg Swindell | Greg Swindell | Charlie Hough | Doug Jones | 335 | 330 | 5 |
| 1989-06-25 | vs CLE | 73 | W 4-2 | 41-32 | 4 | 23,606 | Nolan Ryan | Tom Candiotti | Nolan Ryan | Tom Candiotti | Jeff Russell | 339 | 332 | 7 |
| 1989-06-26 | vs CLE | 74 | L 3-4 | 41-33 | 4 | 17,676 | Bobby Witt | John Farrell | John Farrell | Bobby Witt | Doug Jones | 342 | 336 | 6 |
| 1989-06-27 | @ CHA | 75 | W 5-1 | 42-33 | 4 | 9,631 | Kevin Brown | Greg Hibbard | Kevin Brown | Greg Hibbard | Jeff Russell | 347 | 337 | 10 |
| 1989-06-28 | @ CHA | 76 | W 10-5 | 43-33 | 4 | 8,622 | Mike Jeffcoat | Steve Rosenberg | Mike Jeffcoat | Steve Rosenberg | | 357 | 342 | 15 |
| 1989-06-29 | vs SEA | 77 | L 0-2 | 43-34 | 4 | 26,244 | Charlie Hough | Scott Bankhead | Scott Bankhead | Charlie Hough | Mike Schooler | 357 | 344 | 13 |
| 1989-06-30 | vs SEA | 78 | L 3-4 | 43-35 | 4 | 28,338 | Nolan Ryan | Bill Swift | Bill Swift | Nolan Ryan | Mike Schooler | 360 | 348 | 12 |
| 1989-07-01 | vs SEA | 79 | W 1-0 | 44-35 | 4 | 31,114 | Bobby Witt | Randy Johnson | Bobby Witt | Randy Johnson | Jeff Russell | 361 | 348 | 13 |
| 1989-07-03 | @ CAL | 80 | L 2-5 | 44-36 | 4 | 29,614 | Mike Jeffcoat | Jim Abbott | Jim Abbott | Mike Jeffcoat | Bryan Harvey | 363 | 353 | 10 |
| 1989-07-04 | @ CAL | 81 | L 2-5 | 44-37 | 4 | 62,390 | Kevin Brown | Mike Witt | Willie Fraser | Kevin Brown | | 365 | 358 | 7 |
| 1989-07-05 | @ CAL | 82 | L 1-2 | 44-38 | 4 | 24,852 | Charlie Hough | Chuck Finley | Chuck Finley | Charlie Hough | | 366 | 360 | 6 |
| 1989-07-06 | @ CAL | 83 | W 3-0 | 45-38 | 4 | 37,867 | Nolan Ryan | Kirk McCaskill | Nolan Ryan | Kirk McCaskill | | 369 | 360 | 9 |
| 1989-07-07 | @ OAK | 84 | W 6-3 | 46-38 | 4 | 39,678 | Bobby Witt | Storm Davis | Bobby Witt | Storm Davis | Jeff Russell | 375 | 363 | 12 |
| 1989-07-08 | @ OAK | 85 | W 5-4 | 47-38 | 4 | 38,220 | Kevin Brown | Dave Stewart | Jeff Russell | Matt Young | | 380 | 367 | 13 |
| 1989-07-09 | @ OAK | 86 | L 1-7 | 47-39 | 4 | 40,060 | Charlie Hough | Bob Welch | Bob Welch | Charlie Hough | Rick Honeycutt | 381 | 374 | 7 |
| 1989-07-13 | @ CLE | 87 | W 9-3 | 48-39 | 4 | 11,300 | Bobby Witt | Buddy Black | Jeff Russell | Rod Nichols | | 390 | 377 | 13 |
| 1989-07-14 | @ CLE | 88 | L 5-11 | 48-40 | 4 | 14,511 | Charlie Hough | John Farrell | Jesse Orosco | Cecilio Guante | Doug Jones | 395 | 388 | 7 |
| 1989-07-15 | @ CLE | 89 | L 1-7 | 48-41 | 4 | 28,952 | Nolan Ryan | Greg Swindell | Greg Swindell | Nolan Ryan | | 396 | 395 | 1 |
| 1989-07-16 | @ CLE | 90 | L 5-11 | 48-42 | 4 | 22,095 | Kevin Brown | Scott Bailes | Rich Yett | Kevin Brown | | 401 | 406 | -5 |
| 1989-07-17 | vs BOS | 91 | W 12-6 | 49-42 | 4 | 27,230 | Mike Jeffcoat | Wes Gardner | Cecilio Guante | Wes Gardner | | 413 | 412 | 1 |
| 1989-07-18 | vs BOS | 92 | W 8-1 | 50-42 | 4 | 30,275 | Bobby Witt | Roger Clemens | Bobby Witt | Roger Clemens | | 421 | 413 | 8 |
| 1989-07-19 | vs BOS | 93 | L 0-4 | 50-43 | 4 | 22,830 | Charlie Hough | Mike Boddicker | Mike Boddicker | Charlie Hough | Rob Murphy | 421 | 417 | 4 |
| 1989-07-20 | vs NYA | 94 | W 6-2 | 51-43 | 4 | 32,202 | Nolan Ryan | Andy Hawkins | Nolan Ryan | Andy Hawkins | Kenny Rogers | 427 | 419 | 8 |
| 1989-07-21 | vs NYA | 95 | W 5-2 | 52-43 | 4 | 35,665 | Kevin Brown | Greg Cadaret | Kevin Brown | Greg Cadaret | | 432 | 421 | 11 |
| 1989-07-22 | vs NYA | 96 | W 2-1 | 53-43 | 4 | 41,647 | Mike Jeffcoat | Dave LaPoint | Mike Jeffcoat | Dave LaPoint | Jeff Russell | 434 | 422 | 12 |
| 1989-07-23 | vs NYA | 97 | W 5-4 | 54-43 | 3 | 27,039 | Bobby Witt | Chuck Cary | Bobby Witt | Dave Righetti | | 439 | 426 | 13 |
| 1989-07-24 | vs TOR | 98 | L 3-6 | 54-44 | 4 | 33,754 | Wilson Alvarez | Todd Stottlemyre | Todd Stottlemyre | Wilson Alvarez | Tom Henke | 442 | 432 | 10 |
| 1989-07-25 | vs TOR | 99 | L 0-4 | 54-45 | 4 | 25,297 | Nolan Ryan | Dave Stieb | Dave Stieb | Nolan Ryan | Duane Ward | 442 | 436 | 6 |
| 1989-07-26 | vs TOR | 100 | W 11-1 | 55-45 | 4 | 16,633 | Kevin Brown | Mike Flanagan | Kevin Brown | Mike Flanagan | | 453 | 437 | 16 |
| 1989-07-28 | vs MIL | 101 | L 3-15 | 55-46 | 3 | 27,105 | Mike Jeffcoat | Tom Filer | Tom Filer | Mike Jeffcoat | | 456 | 452 | 4 |
| 1989-07-29 | vs MIL | 102 | L 2-8 | 55-47 | 4 | 37,867 | Bobby Witt | Chris Bosio | Chris Bosio | Bobby Witt | Chuck Crim | 458 | 460 | -2 |
| 1989-07-30 | vs MIL | 103 | W 9-3 | 56-47 | 4 | 37,943 | Nolan Ryan | Don August | Nolan Ryan | Don August | | 467 | 463 | 4 |
| 1989-08-01 | @ DET | 104 | W 4-3 | 57-47 | 4 | 15,305 | Kevin Brown | Frank Tanana | Kevin Brown | Paul Gibson | Jeff Russell | 471 | 466 | 5 |
| 1989-08-02 | @ DET | 105 | L 4-6 | 57-48 | 4 | 14,884 | Mike Jeffcoat | Kevin Ritz | Kevin Ritz | Mike Jeffcoat | | 475 | 472 | 3 |
| 1989-08-03 | @ DET | 106 | L 6-9 | 57-49 | 4 | 16,039 | Bobby Witt | Jeff Robinson | Mike Henneman | Cecilio Guante | | 481 | 481 | 0 |
| 1989-08-04 | @ BAL | 107 | W 6-4 | 58-49 | 4 | 37,754 | Charlie Hough | Dave J. Schmidt | Charlie Hough | Dave J. Schmidt | Jeff Russell | 487 | 485 | 2 |
| 1989-08-05 | @ BAL | 108 | L 2-5 | 58-50 | 4 | 48,776 | Nolan Ryan | Bob Milacki | Bob Milacki | Nolan Ryan | Gregg Olson | 489 | 490 | -1 |
| 1989-08-06 | @ BAL | 109 | L 2-3 | 58-51 | 4 | 28,592 | Kevin Brown | Pete Harnisch | Mark Williamson | Jeff Russell | | 491 | 493 | -2 |
| 1989-08-07 | @ TOR | 110 | L 1-2 | 58-52 | 4 | 48,773 | Mike Jeffcoat | John Cerutti | John Cerutti | Mike Jeffcoat | | 492 | 495 | -3 |
| 1989-08-08 | @ TOR | 111 | L 0-7 | 58-53 | 4 | 48,689 | Bobby Witt | Mauro Gozzo | Mauro Gozzo | Bobby Witt | | 492 | 502 | -10 |
| 1989-08-09 | @ TOR | 112 | W 4-3 | 59-53 | 4 | 48,962 | Charlie Hough | Dave Stieb | Charlie Hough | Dave Stieb | Jeff Russell | 496 | 505 | -9 |
| 1989-08-10 | vs DET | 113 | W 4-1 | 60-53 | 4 | 35,266 | Nolan Ryan | Doyle Alexander | Nolan Ryan | Doyle Alexander | Jeff Russell | 500 | 506 | -6 |
| 1989-08-11 | vs DET | 114 | W 7-3 | 61-53 | 4 | 26,400 | Kevin Brown | Frank Tanana | Kevin Brown | Frank Tanana | | 507 | 509 | -2 |
| 1989-08-12 | vs DET | 115 | L 5-6 | 61-54 | 4 | 38,421 | Mike Jeffcoat | Kevin Ritz | Paul Gibson | Kenny Rogers | Guillermo Hernandez | 512 | 515 | -3 |
| 1989-08-13 | vs DET | 116 | L 2-4 | 61-55 | 4 | 21,056 | Bobby Witt | Jeff Robinson | Mike Henneman | Kenny Rogers | Guillermo Hernandez | 514 | 519 | -5 |
| 1989-08-15 | @ SEA | 117 | L 0-2 | 61-56 | 4 | 11,330 | Charlie Hough | Brian Holman | Brian Holman | Charlie Hough | Mike Schooler | 514 | 521 | -7 |
| 1989-08-16 | @ SEA | 118 | W 3-1 | 62-56 | 4 | 16,873 | Nolan Ryan | Scott Bankhead | Nolan Ryan | Scott Bankhead | Jeff Russell | 517 | 522 | -5 |
| 1989-08-17 | @ CHA | 119 | L 1-6 | 62-57 | 4 | 12,567 | Kevin Brown | Greg Hibbard | Greg Hibbard | Kevin Brown | | 518 | 528 | -10 |
| 1989-08-18 | @ CHA | 120 | W 6-5 | 63-57 | 4 | 12,723 | Mike Jeffcoat | Melido Perez | Mike Jeffcoat | Melido Perez | Jeff Russell | 524 | 533 | -9 |
| 1989-08-19 | @ CHA | 121 | W 7-6 | 64-57 | 4 | 18,638 | Bobby Witt | Richard Dotson | Bobby Witt | Richard Dotson | Jeff Russell | 531 | 539 | -8 |
| 1989-08-20 | @ CHA | 122 | W 7-1 | 65-57 | 4 | 27,158 | Charlie Hough | Steve Rosenberg | Charlie Hough | Steve Rosenberg | | 538 | 540 | -2 |
| 1989-08-22 | vs OAK | 123 | L 0-2 | 65-58 | 4 | 42,869 | Nolan Ryan | Bob Welch | Bob Welch | Nolan Ryan | Dennis Eckersley | 538 | 542 | -4 |
| 1989-08-23 | vs OAK | 124 | L 4-5 | 65-59 | 4 | 23,453 | Kevin Brown | Dave Stewart | Dave Stewart | Kevin Brown | Dennis Eckersley | 542 | 547 | -5 |
| 1989-08-24 | vs OAK | 125 | W 6-2 | 66-59 | 4 | 25,604 | Mike Jeffcoat | Storm Davis | Mike Jeffcoat | Storm Davis | Gary Mielke | 548 | 549 | -1 |
| 1989-08-25 | vs CAL | 126 | L 1-4 | 66-60 | 4 | 25,427 | Bobby Witt | Kirk McCaskill | Kirk McCaskill | Bobby Witt | Greg Minton | 549 | 553 | -4 |
| 1989-08-26 | vs CAL | 127 | W 3-2 | 67-60 | 4 | 32,157 | Charlie Hough | Terry Clark | Charlie Hough | Terry Clark | Jeff Russell | 552 | 555 | -3 |
| 1989-08-27 | vs CAL | 128 | L 4-5 | 67-61 | 4 | 25,270 | Nolan Ryan | Mike Witt | Bob McClure | Nolan Ryan | | 556 | 560 | -4 |
| 1989-08-29 | @ MIN | 129 | W 4-2 | 68-61 | 4 | 19,004 | Kevin Brown | Rick Aguilera | Drew Hall | Rick Aguilera | Jeff Russell | 560 | 562 | -2 |
| 1989-08-30 | @ MIN | 130 | L 3-7 | 68-62 | 4 | 18,651 | Mike Jeffcoat | Mike Dyer | Mike Dyer | Jeff Russell | Jeff Reardon | 563 | 569 | -6 |
| 1989-08-31 | @ MIN | 131 | L 6-8 | 68-63 | 4 | 18,556 | Bobby Witt | David West | David West | Bobby Witt | Jeff Reardon | 569 | 577 | -8 |
| 1989-09-01 | vs KCA | 132 | L 3-5 | 68-64 | 4 | 21,036 | Charlie Hough | Tom Gordon | Rick Luecken | Kenny Rogers | Jeff Montgomery | 572 | 582 | -10 |
| 1989-09-02 | vs KCA | 133 | W 6-3 | 69-64 | 4 | 33,550 | Nolan Ryan | Terry Leach | Nolan Ryan | Terry Leach | Jeff Russell | 578 | 585 | -7 |
| 1989-09-03 | vs KCA | 134 | L 2-13 | 69-65 | 4 | 18,144 | Kevin Brown | Mark Gubicza | Mark Gubicza | Kevin Brown | | 580 | 598 | -18 |
| 1989-09-04 | vs MIN | 135 | W 8-5 | 70-65 | 4 | 13,693 | Mike Jeffcoat | Allan Anderson | Brad Arnsberg | Mike Dyer | Jeff Russell | 588 | 603 | -15 |
| 1989-09-05 | vs MIN | 136 | L 4-8 | 70-66 | 4 | 11,320 | Jamie Moyer | Kevin Tapani | Kevin Tapani | Jamie Moyer | | 592 | 611 | -19 |
| 1989-09-06 | vs MIN | 137 | W 3-2 | 71-66 | 4 | 10,276 | Charlie Hough | David West | Charlie Hough | David West | Jeff Russell | 595 | 613 | -18 |
| 1989-09-07 | vs BAL | 138 | L 3-8 | 71-68 | 4 | 0 | Nolan Ryan | Jeff Ballard | Jeff Ballard | Nolan Ryan | Mark Williamson | 598 | 621 | -23 |
| 1989-09-07 | vs BAL | 139 | L 6-9 | 71-68 | 4 | 15,759 | Bobby Witt | Pete Harnisch | Pete Harnisch | Bobby Witt | | 604 | 630 | -26 |
| 1989-09-08 | vs BAL | 140 | W 3-1 | 72-68 | 4 | 15,080 | Kevin Brown | Dave Johnson | Kevin Brown | Dave Johnson | Jeff Russell | 607 | 631 | -24 |
| 1989-09-09 | vs BAL | 141 | L 2-4 | 72-69 | 4 | 30,332 | Mike Jeffcoat | Bob Milacki | Gregg Olson | Drew Hall | | 609 | 635 | -26 |
| 1989-09-10 | vs BAL | 142 | W 8-1 | 73-69 | 4 | 13,783 | Jamie Moyer | Dave J. Schmidt | Jamie Moyer | Dave J. Schmidt | | 617 | 636 | -19 |
| 1989-09-12 | @ KCA | 143 | L 5-6 | 73-70 | 4 | 19,477 | Nolan Ryan | Mark Gubicza | Rick Luecken | Kenny Rogers | | 622 | 642 | -20 |
| 1989-09-13 | @ KCA | 144 | L 2-3 | 73-71 | 4 | 20,011 | Charlie Hough | Bret Saberhagen | Bret Saberhagen | Charlie Hough | | 624 | 645 | -21 |
| 1989-09-14 | @ KCA | 145 | W 10-4 | 74-71 | 4 | 25,857 | Mike Jeffcoat | Tom Gordon | Mike Jeffcoat | Tom Gordon | | 634 | 649 | -15 |
| 1989-09-15 | @ MIL | 146 | L 2-6 | 74-72 | 5 | 18,290 | Jamie Moyer | Jaime Navarro | Jaime Navarro | Jamie Moyer | | 636 | 655 | -19 |
| 1989-09-16 | @ MIL | 147 | L 3-5 | 74-73 | 5 | 44,115 | John Barfield | Jerry Reuss | Don August | John Barfield | Dan Plesac | 639 | 660 | -21 |
| 1989-09-17 | @ MIL | 148 | W 4-2 | 75-73 | 5 | 22,129 | Bobby Witt | Chris Bosio | Bobby Witt | Chris Bosio | Kenny Rogers | 643 | 662 | -19 |
| 1989-09-18 | vs SEA | 149 | W 5-2 | 76-73 | 4 | 4,654 | Nolan Ryan | Scott Bankhead | Cecilio Guante | Michael Jackson | | 648 | 664 | -16 |
| 1989-09-19 | vs SEA | 150 | W 5-3 | 77-73 | 4 | 10,478 | Charlie Hough | Clint Zavaras | Brad Arnsberg | Jerry Reed | Jeff Russell | 653 | 667 | -14 |
| 1989-09-20 | vs SEA | 151 | W 3-2 | 78-73 | 4 | 10,684 | Mike Jeffcoat | Erik Hanson | Mike Jeffcoat | Keith Comstock | Jeff Russell | 656 | 669 | -13 |
| 1989-09-21 | vs SEA | 152 | L 3-8 | 78-74 | 4 | 10,268 | Jamie Moyer | Randy Johnson | Randy Johnson | Jamie Moyer | | 659 | 677 | -18 |
| 1989-09-22 | vs CHA | 153 | L 6-9 | 78-75 | 4 | 15,655 | John Barfield | Shawn Hillegas | Barry Jones | Cecilio Guante | Bobby Thigpen | 665 | 686 | -21 |
| 1989-09-23 | vs CHA | 154 | W 6-4 | 79-75 | 4 | 22,570 | Bobby Witt | Eric King | Kenny Rogers | Jose Segura | Jeff Russell | 671 | 690 | -19 |
| 1989-09-24 | vs CHA | 155 | W 5-4 | 80-75 | 4 | 23,631 | Nolan Ryan | Greg Hibbard | Jeff Russell | Steve Rosenberg | | 676 | 694 | -18 |
| 1989-09-25 | @ OAK | 156 | W 3-2 | 81-75 | 4 | 32,701 | Charlie Hough | Bob Welch | Drew Hall | Todd Burns | Jeff Russell | 679 | 696 | -17 |
| 1989-09-26 | @ OAK | 157 | L 3-4 | 81-76 | 4 | 23,119 | Mike Jeffcoat | Curt Young | Dennis Eckersley | Mike Jeffcoat | | 682 | 700 | -18 |
| 1989-09-27 | @ OAK | 158 | L 0-5 | 81-77 | 4 | 32,280 | Jamie Moyer | Mike Moore | Mike Moore | Jamie Moyer | | 682 | 705 | -23 |
| 1989-09-28 | @ OAK | 159 | L 3-5 | 81-78 | 4 | 21,127 | Brad Arnsberg | Dave Stewart | Dave Stewart | Brad Arnsberg | Dennis Eckersley | 685 | 710 | -25 |
| 1989-09-29 | @ CAL | 160 | W 5-0 | 82-78 | 4 | 27,598 | Bobby Witt | Mike Witt | Bobby Witt | Mike Witt | | 690 | 710 | -20 |
| 1989-09-30 | @ CAL | 161 | W 2-0 | 83-78 | 4 | 34,910 | Nolan Ryan | Chuck Finley | Nolan Ryan | Chuck Finley | | 692 | 710 | -18 |
| 1989-10-01 | @ CAL | 162 | L 3-4 | 83-79 | 4 | 37,259 | Mike Jeffcoat | Kirk McCaskill | Greg Minton | Darrel Akerfelds | Bryan Harvey | 695 | 714 | -19 |