| West | W | L | Pct | GB |
| Chi White Sox | 99 | 63 | .611 | -- |
| KC Royals | 79 | 83 | .488 | 20.0 |
| Texas | 77 | 85 | .475 | 22.0 |
| Oakland | 74 | 88 | .457 | 25.0 |
| Minnesota | 70 | 92 | .432 | 29.0 |
| California | 70 | 92 | .432 | 29.0 |
| Seattle | 60 | 102 | .370 | 39.0 |
| Date | Pitcher | Hand | Age | Game Result | Opp | GS# | Career | Dec | IP | H | R | ER | HR | BB | SO | Pit | Bal | Str | Str% | W-L | ERA | WHIP |
| 1983-04-05 | Bruce Kison | R | 33 | L 3-2 | vs MIL | 1 | 214 | W | 6.2 | 5 | 1 | 1 | 0 | 4 | 4 | 0 | 0 | 0 | -- | 1-0 | 1.29 | 1.29 |
| 1983-04-06 | Tommy John | L | 40 | L 4-3 | vs MIL | 1 | 536 | W | 9.0 | 6 | 3 | 3 | 1 | 0 | 2 | 0 | 0 | 0 | -- | 1-0 | 3.00 | 0.67 |
| 1983-04-07 | Mike Witt | R | 23 | W 3-5 | vs MIL | 1 | 48 | L | 7.0 | 6 | 4 | 4 | 2 | 0 | 2 | 0 | 0 | 0 | -- | 0-1 | 5.14 | 0.86 |
| 1983-04-08 | Geoff Zahn | L | 37 | L 3-5 | @ OAK | 1 | 209 | L | 7.1 | 9 | 4 | 3 | 0 | 2 | 5 | 0 | 0 | 0 | -- | 0-1 | 3.86 | 1.57 |
| 1983-04-09 | Ken Forsch | R | 37 | W 10-2 | @ OAK | 1 | 207 | W | 5.0 | 4 | 2 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | -- | 1-0 | 3.60 | 1.00 |
| 1983-04-10 | Bruce Kison | R | 33 | L 4-11 | @ OAK | 2 | 215 | L | 1.0 | 6 | 5 | 4 | 0 | 0 | 2 | 0 | 0 | 0 | -- | 1-1 | 5.63 | 1.88 |
| 1983-04-11 | Tommy John | L | 40 | L 6-1 | vs SEA | 2 | 537 | W | 9.0 | 7 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | -- | 2-0 | 2.00 | 0.78 |
| 1983-04-12 | Mike Witt | R | 23 | W 1-8 | vs SEA | 2 | 49 | L | 5.0 | 9 | 5 | 5 | 1 | 1 | 1 | 0 | 0 | 0 | -- | 0-2 | 6.75 | 1.33 |
| 1983-04-13 | Geoff Zahn | L | 37 | L 6-1 | vs SEA | 2 | 210 | W | 9.0 | 4 | 1 | 1 | 0 | 0 | 7 | 0 | 0 | 0 | -- | 1-1 | 2.25 | 0.94 |
| 1983-04-15 | Ken Forsch | R | 37 | W 8-2 | @ MIN | 2 | 208 | W | 9.0 | 8 | 2 | 2 | 1 | 0 | 3 | 0 | 0 | 0 | -- | 2-0 | 2.57 | 0.93 |
| 1983-04-16 | Bruce Kison | R | 33 | W 9-5 | @ MIN | 3 | 216 | W | 9.0 | 7 | 5 | 5 | 2 | 3 | 10 | 0 | 0 | 0 | -- | 2-1 | 5.29 | 1.47 |
| 1983-04-17 | Tommy John | L | 40 | L 8-11 | @ MIN | 3 | 538 | - | 5.0 | 7 | 6 | 6 | 1 | 3 | 0 | 0 | 0 | 0 | -- | 2-0 | 3.91 | 1.04 |
| 1983-04-18 | Mike Witt | R | 23 | W 3-5 | vs OAK | 3 | 50 | L | 3.0 | 7 | 5 | 5 | 0 | 1 | 2 | 0 | 0 | 0 | -- | 0-3 | 8.40 | 1.60 |
| 1983-04-21 | Geoff Zahn | L | 37 | L 6-2 | vs OAK | 3 | 211 | W | 9.0 | 5 | 2 | 2 | 1 | 5 | 7 | 0 | 0 | 0 | -- | 2-1 | 2.16 | 1.00 |
| 1983-04-21 | Ken Forsch | R | 37 | L 6-5 | vs OAK | 3 | 209 | W | 6.1 | 7 | 5 | 5 | 0 | 2 | 5 | 0 | 0 | 0 | -- | 3-0 | 4.05 | 1.10 |
| 1983-04-22 | Bruce Kison | R | 33 | L 6-5 | vs BAL | 4 | 217 | - | 6.2 | 9 | 5 | 5 | 2 | 1 | 4 | 0 | 0 | 0 | -- | 2-1 | 5.87 | 1.52 |
| 1983-04-23 | Tommy John | L | 40 | W 1-3 | vs BAL | 4 | 539 | L | 9.0 | 14 | 3 | 3 | 0 | 0 | 5 | 0 | 0 | 0 | -- | 2-1 | 3.66 | 1.19 |
| 1983-04-24 | Dave Goltz | R | 34 | L 7-3 | vs BAL | 1 | 259 | - | 5.2 | 6 | 3 | 3 | 1 | 2 | 4 | 0 | 0 | 0 | -- | 0-1 | 5.21 | 1.74 |
| 1983-04-27 | Geoff Zahn | L | 37 | L 13-3 | vs DET | 4 | 212 | W | 6.2 | 8 | 3 | 3 | 0 | 1 | 3 | 0 | 0 | 0 | -- | 3-1 | 2.53 | 1.06 |
| 1983-04-29 | Bruce Kison | R | 33 | W 5-6 | vs BOS | 5 | 218 | - | 5.1 | 6 | 3 | 3 | 0 | 5 | 2 | 0 | 0 | 0 | -- | 2-1 | 5.59 | 1.59 |
| 1983-04-30 | Tommy John | L | 40 | L 4-1 | vs BOS | 5 | 540 | - | 3.0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | -- | 2-1 | 3.34 | 1.14 |
| 1983-05-01 | Dave Goltz | R | 34 | W 9-10 | vs BOS | 2 | 260 | - | 5.2 | 9 | 7 | 7 | 3 | 4 | 2 | 0 | 0 | 0 | -- | 0-1 | 6.48 | 1.84 |
| 1983-05-03 | Geoff Zahn | L | 37 | L 2-4 | @ BAL | 5 | 213 | L | 7.2 | 10 | 4 | 3 | 1 | 2 | 4 | 0 | 0 | 0 | -- | 3-2 | 2.70 | 1.15 |
| 1983-05-04 | Ken Forsch | R | 37 | W 16-8 | @ BAL | 4 | 210 | - | 4.0 | 9 | 5 | 3 | 0 | 2 | 2 | 0 | 0 | 0 | -- | 3-0 | 4.50 | 1.38 |
| 1983-05-06 | Bruce Kison | R | 33 | W 4-2 | @ DET | 6 | 219 | W | 8.0 | 7 | 2 | 2 | 1 | 2 | 8 | 0 | 0 | 0 | -- | 3-1 | 4.86 | 1.49 |
| 1983-05-07 | Geoff Zahn | L | 37 | W 6-5 | @ DET | 6 | 214 | - | 6.1 | 9 | 5 | 4 | 3 | 1 | 3 | 0 | 0 | 0 | -- | 3-2 | 3.13 | 1.22 |
| 1983-05-08 | Ken Forsch | R | 37 | L 1-5 | @ DET | 5 | 211 | L | 7.0 | 8 | 5 | 5 | 2 | 4 | 4 | 0 | 0 | 0 | -- | 3-1 | 4.94 | 1.45 |
| 1983-05-09 | Tommy John | L | 40 | L 2-8 | @ BOS | 6 | 541 | L | 2.0 | 6 | 7 | 7 | 0 | 2 | 0 | 0 | 0 | 0 | -- | 2-2 | 4.86 | 1.30 |
| 1983-05-10 | Bill Travers | L | 31 | W 6-5 | @ BOS | 1 | 162 | - | 5.0 | 7 | 5 | 3 | 0 | 1 | 1 | 0 | 0 | 0 | -- | 0-0 | 5.40 | 1.60 |
| 1983-05-11 | Bruce Kison | R | 33 | W 3-1 | @ BOS | 7 | 220 | W | 9.0 | 4 | 1 | 1 | 0 | 1 | 7 | 0 | 0 | 0 | -- | 4-1 | 4.11 | 1.30 |
| 1983-05-13 | Geoff Zahn | L | 37 | W 4-5 | vs MIN | 7 | 215 | - | 6.1 | 8 | 4 | 3 | 0 | 1 | 1 | 0 | 0 | 0 | -- | 3-2 | 3.29 | 1.25 |
| 1983-05-14 | Ken Forsch | R | 37 | W 1-2 | vs MIN | 6 | 212 | L | 7.1 | 7 | 2 | 2 | 0 | 1 | 2 | 0 | 0 | 0 | -- | 3-2 | 4.38 | 1.36 |
| 1983-05-15 | Tommy John | L | 40 | W 6-8 | vs MIN | 7 | 542 | - | 5.1 | 8 | 5 | 4 | 2 | 1 | 2 | 0 | 0 | 0 | -- | 2-2 | 5.14 | 1.36 |
| 1983-05-17 | Bruce Kison | R | 33 | W 3-1 | @ SEA | 8 | 221 | W | 9.0 | 5 | 1 | 1 | 1 | 3 | 4 | 0 | 0 | 0 | -- | 5-1 | 3.60 | 1.24 |
| 1983-05-18 | Geoff Zahn | L | 37 | L 1-2 | @ SEA | 8 | 216 | L | 8.0 | 6 | 2 | 1 | 0 | 3 | 3 | 0 | 0 | 0 | -- | 3-3 | 3.00 | 1.23 |
| 1983-05-19 | Ken Forsch | R | 37 | L 0-1 | @ SEA | 7 | 213 | L | 8.0 | 5 | 1 | 1 | 0 | 3 | 5 | 0 | 0 | 0 | -- | 3-3 | 3.83 | 1.30 |
| 1983-05-20 | Tommy John | L | 40 | L 5-4 | vs CLE | 8 | 543 | W | 7.2 | 8 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 3-2 | 4.50 | 1.30 |
| 1983-05-21 | Bill Travers | L | 31 | W 3-9 | vs CLE | 2 | 163 | L | 4.2 | 7 | 5 | 5 | 0 | 4 | 3 | 0 | 0 | 0 | -- | 0-1 | 7.20 | 1.90 |
| 1983-05-22 | Bruce Kison | R | 33 | L 9-0 | vs CLE | 9 | 222 | W | 9.0 | 4 | 0 | 0 | 0 | 2 | 5 | 0 | 0 | 0 | -- | 6-1 | 3.09 | 1.16 |
| 1983-05-23 | Geoff Zahn | L | 37 | L 3-0 | vs NYA | 9 | 217 | W | 9.0 | 6 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | -- | 4-3 | 2.61 | 1.20 |
| 1983-05-24 | Ken Forsch | R | 37 | L 7-6 | vs NYA | 8 | 214 | - | 6.2 | 8 | 2 | 2 | 1 | 3 | 0 | 0 | 0 | 0 | -- | 3-3 | 3.74 | 1.36 |
| 1983-05-25 | Tommy John | L | 40 | L 7-1 | vs NYA | 9 | 544 | W | 9.0 | 9 | 1 | 1 | 1 | 1 | 2 | 0 | 0 | 0 | -- | 4-2 | 3.97 | 1.27 |
| 1983-05-27 | Bruce Kison | R | 33 | W 5-4 | @ CLE | 10 | 223 | - | 6.0 | 9 | 3 | 3 | 0 | 2 | 2 | 0 | 0 | 0 | -- | 6-1 | 3.21 | 1.21 |
| 1983-05-28 | Geoff Zahn | L | 37 | W 7-4 | @ CLE | 10 | 218 | W | 9.0 | 9 | 4 | 4 | 0 | 2 | 0 | 0 | 0 | 0 | -- | 5-3 | 2.77 | 1.21 |
| 1983-05-29 | Ken Forsch | R | 37 | W 6-4 | @ CLE | 9 | 215 | - | 6.0 | 8 | 3 | 3 | 0 | 3 | 2 | 0 | 0 | 0 | -- | 3-3 | 3.81 | 1.41 |
| 1983-05-30 | Tommy John | L | 40 | L 5-6 | @ CLE | 10 | 545 | - | 7.0 | 12 | 5 | 4 | 0 | 2 | 2 | 0 | 0 | 0 | -- | 4-2 | 4.09 | 1.35 |
| 1983-05-31 | Bill Travers | L | 31 | L 3-5 | @ NYA | 3 | 164 | - | 7.0 | 3 | 2 | 2 | 0 | 5 | 6 | 0 | 0 | 0 | -- | 0-1 | 5.29 | 1.59 |
| 1983-06-01 | Dave Goltz | R | 34 | L 0-3 | @ NYA | 3 | 261 | L | 6.1 | 4 | 3 | 3 | 2 | 3 | 2 | 0 | 0 | 0 | -- | 0-3 | 6.37 | 1.88 |
| 1983-06-02 | Geoff Zahn | L | 37 | W 9-8 | @ NYA | 11 | 219 | - | 5.0 | 9 | 7 | 6 | 2 | 2 | 2 | 0 | 0 | 0 | -- | 5-3 | 3.25 | 1.27 |
| 1983-06-03 | Ken Forsch | R | 37 | W 3-0 | @ MIL | 10 | 216 | W | 9.0 | 6 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | -- | 4-3 | 3.31 | 1.32 |
| 1983-06-04 | Tommy John | L | 40 | W 8-3 | @ MIL | 11 | 546 | W | 9.0 | 9 | 3 | 2 | 1 | 0 | 1 | 0 | 0 | 0 | -- | 5-2 | 3.84 | 1.31 |
| 1983-06-05 | Bill Travers | L | 31 | L 4-5 | @ MIL | 4 | 165 | - | 5.1 | 9 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | -- | 0-1 | 4.91 | 1.68 |
| 1983-06-06 | Dave Goltz | R | 34 | L 7-9 | @ MIL | 4 | 262 | L | 5.0 | 11 | 6 | 6 | 0 | 3 | 2 | 0 | 0 | 0 | -- | 0-4 | 6.85 | 1.98 |
| 1983-06-07 | Mike Witt | R | 23 | W 11-12 | vs CHA | 4 | 51 | - | 5.1 | 7 | 6 | 5 | 0 | 2 | 3 | 0 | 0 | 0 | -- | 3-5 | 5.14 | 1.36 |
| 1983-06-08 | Ken Forsch | R | 37 | L 7-4 | vs CHA | 11 | 217 | W | 9.0 | 5 | 4 | 3 | 0 | 3 | 5 | 0 | 0 | 0 | -- | 5-3 | 3.27 | 1.27 |
| 1983-06-09 | Tommy John | L | 40 | L 3-2 | vs CHA | 12 | 547 | W | 9.0 | 11 | 2 | 0 | 0 | 2 | 1 | 0 | 0 | 0 | -- | 6-2 | 3.43 | 1.32 |
| 1983-06-10 | Bill Travers | L | 31 | L 5-3 | vs TOR | 5 | 166 | - | 6.1 | 7 | 3 | 2 | 0 | 2 | 5 | 0 | 0 | 0 | -- | 0-1 | 4.50 | 1.64 |
| 1983-06-11 | Dave Goltz | R | 34 | W 2-3 | vs TOR | 5 | 263 | L | 7.1 | 7 | 3 | 3 | 0 | 4 | 4 | 0 | 0 | 0 | -- | 0-5 | 6.33 | 1.89 |
| 1983-06-12 | Byron McLaughlin | R | 28 | W 5-6 | vs TOR | 1 | 29 | - | 8.0 | 6 | 1 | 1 | 0 | 2 | 7 | 0 | 0 | 0 | -- | 0-0 | 2.00 | 1.11 |
| 1983-06-13 | Ken Forsch | R | 37 | W 7-4 | @ CHA | 12 | 218 | W | 9.0 | 7 | 4 | 4 | 2 | 3 | 3 | 0 | 0 | 0 | -- | 6-3 | 3.35 | 1.26 |
| 1983-06-15 | Tommy John | L | 40 | L 2-5 | @ CHA | 13 | 548 | L | 5.1 | 7 | 5 | 5 | 0 | 1 | 4 | 0 | 0 | 0 | -- | 6-3 | 3.74 | 1.34 |
| 1983-06-17 | Bill Travers | L | 31 | L 3-6 | @ TOR | 6 | 167 | L | 2.2 | 8 | 5 | 5 | 2 | 0 | 2 | 0 | 0 | 0 | -- | 0-2 | 5.52 | 1.74 |
| 1983-06-18 | Ken Forsch | R | 37 | W 7-6 | @ TOR | 13 | 219 | - | 7.1 | 8 | 4 | 4 | 1 | 0 | 2 | 0 | 0 | 0 | -- | 6-3 | 3.45 | 1.23 |
| 1983-06-19 | Dave Goltz | R | 34 | L 1-6 | @ TOR | 6 | 264 | L | 6.1 | 7 | 5 | 5 | 2 | 3 | 3 | 0 | 0 | 0 | -- | 0-6 | 6.45 | 1.87 |
| 1983-06-20 | Tommy John | L | 40 | W 10-9 | @ TEX | 14 | 549 | - | 4.2 | 10 | 5 | 5 | 0 | 1 | 1 | 0 | 0 | 0 | -- | 6-3 | 4.02 | 1.38 |
| 1983-06-21 | Byron McLaughlin | R | 28 | L 2-3 | @ TEX | 2 | 30 | L | 7.2 | 9 | 3 | 3 | 1 | 3 | 6 | 0 | 0 | 0 | -- | 0-1 | 2.45 | 1.23 |
| 1983-06-22 | Bill Travers | L | 31 | L 1-9 | @ TEX | 7 | 168 | L | 1.2 | 4 | 3 | 2 | 0 | 3 | 2 | 0 | 0 | 0 | -- | 0-3 | 5.73 | 1.85 |
| 1983-06-23 | Ken Forsch | R | 37 | W 7-2 | @ KCA | 14 | 220 | W | 9.0 | 6 | 2 | 2 | 0 | 2 | 6 | 0 | 0 | 0 | -- | 7-3 | 3.32 | 1.20 |
| 1983-06-24 | Tommy John | L | 40 | L 3-11 | @ KCA | 15 | 550 | L | 6.0 | 9 | 6 | 6 | 0 | 1 | 1 | 0 | 0 | 0 | -- | 6-4 | 4.32 | 1.40 |
| 1983-06-25 | Mike Witt | R | 23 | W 9-2 | @ KCA | 5 | 52 | W | 7.0 | 6 | 2 | 0 | 0 | 2 | 6 | 0 | 0 | 0 | -- | 4-5 | 4.75 | 1.40 |
| 1983-06-27 | Bruce Kison | R | 33 | L 8-0 | vs TEX | 11 | 224 | W | 7.0 | 2 | 0 | 0 | 0 | 3 | 4 | 0 | 0 | 0 | -- | 7-1 | 2.92 | 1.17 |
| 1983-06-28 | Ken Forsch | R | 37 | W 1-3 | vs TEX | 15 | 221 | L | 4.2 | 8 | 3 | 3 | 1 | 0 | 1 | 0 | 0 | 0 | -- | 7-4 | 3.45 | 1.23 |
| 1983-06-29 | Tommy John | L | 40 | L 2-1 | vs TEX | 16 | 551 | - | 8.0 | 5 | 1 | 1 | 0 | 0 | 5 | 0 | 0 | 0 | -- | 6-4 | 4.08 | 1.34 |
| 1983-06-30 | Mike Witt | R | 23 | W 2-4 | vs TEX | 6 | 53 | - | 8.0 | 7 | 2 | 2 | 0 | 4 | 2 | 0 | 0 | 0 | -- | 4-5 | 4.43 | 1.39 |
| 1983-07-01 | Byron McLaughlin | R | 28 | L 7-6 | vs KCA | 3 | 31 | W | 7.0 | 10 | 5 | 5 | 1 | 1 | 3 | 0 | 0 | 0 | -- | 1-1 | 3.41 | 1.31 |
| 1983-07-02 | Bruce Kison | R | 33 | W 3-5 | vs KCA | 12 | 225 | L | 5.2 | 9 | 5 | 5 | 1 | 2 | 3 | 0 | 0 | 0 | -- | 7-2 | 3.29 | 1.23 |
| 1983-07-03 | Ken Forsch | R | 37 | L 5-2 | vs KCA | 16 | 222 | W | 9.0 | 8 | 2 | 2 | 1 | 0 | 1 | 0 | 0 | 0 | -- | 8-4 | 3.34 | 1.21 |
| 1983-07-04 | Tommy John | L | 40 | W 1-5 | vs KCA | 17 | 552 | L | 1.2 | 5 | 3 | 3 | 0 | 2 | 1 | 0 | 0 | 0 | -- | 6-5 | 4.25 | 1.38 |
| 1983-07-08 | Bruce Kison | R | 33 | W 9-3 | @ BOS | 13 | 226 | W | 8.1 | 13 | 3 | 3 | 1 | 1 | 7 | 0 | 0 | 0 | -- | 8-2 | 3.26 | 1.26 |
| 1983-07-09 | Ken Forsch | R | 37 | L 3-10 | @ BOS | 17 | 223 | L | 4.2 | 7 | 7 | 4 | 2 | 2 | 0 | 0 | 0 | 0 | -- | 8-5 | 3.50 | 1.23 |
| 1983-07-10 | Tommy John | L | 40 | W 5-3 | @ BOS | 18 | 553 | W | 6.2 | 8 | 3 | 2 | 1 | 0 | 1 | 0 | 0 | 0 | -- | 7-5 | 4.19 | 1.38 |
| 1983-07-11 | Geoff Zahn | L | 38 | L 6-12 | @ DET | 12 | 220 | L | 0.2 | 5 | 5 | 5 | 1 | 2 | 1 | 0 | 0 | 0 | -- | 5-4 | 3.75 | 1.33 |
| 1983-07-12 | Byron McLaughlin | R | 28 | L 4-5 | @ DET | 4 | 32 | - | 7.0 | 9 | 4 | 4 | 0 | 3 | 6 | 0 | 0 | 0 | -- | 1-1 | 3.89 | 1.38 |
| 1983-07-13 | Bruce Kison | R | 33 | L 1-7 | @ DET | 14 | 227 | L | 5.0 | 7 | 5 | 5 | 0 | 2 | 6 | 0 | 0 | 0 | -- | 8-3 | 3.56 | 1.29 |
| 1983-07-14 | Ken Forsch | R | 37 | L 1-5 | @ BAL | 18 | 224 | L | 8.0 | 7 | 5 | 5 | 1 | 2 | 5 | 0 | 0 | 0 | -- | 8-6 | 3.63 | 1.22 |
| 1983-07-15 | Tommy John | L | 40 | L 4-10 | @ BAL | 19 | 554 | L | 5.1 | 9 | 6 | 6 | 1 | 2 | 2 | 0 | 0 | 0 | -- | 7-6 | 4.43 | 1.40 |
| 1983-07-16 | Geoff Zahn | L | 38 | W 8-5 | @ BAL | 13 | 221 | W | 8.2 | 9 | 5 | 4 | 2 | 2 | 6 | 0 | 0 | 0 | -- | 6-4 | 3.73 | 1.33 |
| 1983-07-17 | Byron McLaughlin | R | 28 | L 1-11 | @ BAL | 5 | 33 | L | 3.0 | 8 | 7 | 7 | 0 | 4 | 3 | 0 | 0 | 0 | -- | 1-2 | 5.18 | 1.58 |
| 1983-07-18 | Bruce Kison | R | 33 | W 2-7 | vs BOS | 15 | 228 | L | 2.1 | 7 | 5 | 5 | 1 | 0 | 0 | 0 | 0 | 0 | -- | 8-4 | 3.95 | 1.34 |
| 1983-07-19 | Ken Forsch | R | 37 | L 6-1 | vs BOS | 19 | 225 | W | 9.0 | 3 | 1 | 1 | 1 | 1 | 3 | 0 | 0 | 0 | -- | 9-6 | 3.46 | 1.17 |
| 1983-07-20 | Tommy John | L | 40 | W 4-6 | vs BOS | 20 | 555 | L | 8.0 | 10 | 5 | 5 | 1 | 1 | 2 | 0 | 0 | 0 | -- | 7-7 | 4.50 | 1.40 |
| 1983-07-21 | Mike Witt | R | 23 | W 1-5 | vs DET | 7 | 54 | L | 6.0 | 7 | 3 | 3 | 1 | 1 | 6 | 0 | 0 | 0 | -- | 4-7 | 4.44 | 1.48 |
| 1983-07-21 | Geoff Zahn | L | 38 | L 3-2 | vs DET | 14 | 222 | W | 6.2 | 6 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | -- | 7-4 | 3.60 | 1.32 |
| 1983-07-22 | Byron McLaughlin | R | 28 | W 11-13 | vs DET | 6 | 34 | L | 0.2 | 5 | 4 | 4 | 0 | 1 | 0 | 0 | 0 | 0 | -- | 1-3 | 6.08 | 1.73 |
| 1983-07-23 | Bruce Kison | R | 33 | W 2-7 | vs DET | 16 | 229 | L | 5.2 | 8 | 6 | 6 | 2 | 3 | 2 | 0 | 0 | 0 | -- | 8-5 | 4.24 | 1.37 |
| 1983-07-24 | Ken Forsch | R | 37 | W 3-4 | vs DET | 20 | 226 | - | 9.2 | 9 | 3 | 3 | 1 | 2 | 1 | 0 | 0 | 0 | -- | 9-6 | 3.41 | 1.17 |
| 1983-07-25 | Tommy John | L | 40 | L 5-2 | vs BAL | 21 | 556 | W | 7.2 | 7 | 2 | 2 | 1 | 2 | 4 | 0 | 0 | 0 | -- | 8-7 | 4.40 | 1.39 |
| 1983-07-26 | Geoff Zahn | L | 38 | W 4-5 | vs BAL | 15 | 223 | L | 9.0 | 7 | 5 | 5 | 1 | 3 | 3 | 0 | 0 | 0 | -- | 7-5 | 3.72 | 1.30 |
| 1983-07-27 | Mike Witt | R | 23 | W 4-10 | vs BAL | 8 | 55 | L | 4.0 | 7 | 4 | 4 | 0 | 3 | 4 | 0 | 0 | 0 | -- | 4-8 | 4.66 | 1.53 |
| 1983-07-29 | Ken Forsch | R | 37 | W 2-5 | vs OAK | 21 | 227 | L | 8.0 | 12 | 5 | 5 | 1 | 2 | 6 | 0 | 0 | 0 | -- | 9-7 | 3.52 | 1.20 |
| 1983-07-30 | Bruce Kison | R | 33 | W 8-13 | vs OAK | 17 | 230 | - | 3.1 | 7 | 5 | 4 | 1 | 1 | 3 | 0 | 0 | 0 | -- | 8-5 | 4.46 | 1.40 |
| 1983-07-30 | Tommy John | L | 40 | W 1-2 | vs OAK | 22 | 557 | L | 12.0 | 9 | 2 | 2 | 0 | 3 | 2 | 0 | 0 | 0 | -- | 8-8 | 4.17 | 1.36 |
| 1983-07-31 | Geoff Zahn | L | 38 | L 4-0 | vs OAK | 16 | 224 | W | 9.0 | 7 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | -- | 8-5 | 3.43 | 1.26 |
| 1983-08-01 | Mike Witt | R | 23 | W 12-6 | @ MIN | 9 | 56 | W | 9.0 | 12 | 6 | 6 | 1 | 4 | 5 | 0 | 0 | 0 | -- | 5-8 | 4.79 | 1.55 |
| 1983-08-01 | Steve Brown | R | 26 | L 0-7 | @ MIN | 1 | 1 | L | 4.1 | 11 | 5 | 5 | 1 | 2 | 1 | 0 | 0 | 0 | -- | 0-1 | 11.25 | 3.25 |
| 1983-08-02 | Ken Forsch | R | 37 | W 2-1 | @ MIN | 22 | 228 | - | 7.0 | 5 | 1 | 1 | 0 | 2 | 2 | 0 | 0 | 0 | -- | 9-7 | 3.42 | 1.19 |
| 1983-08-03 | Tommy John | L | 40 | W 7-5 | @ MIN | 23 | 558 | - | 5.2 | 8 | 3 | 3 | 1 | 0 | 1 | 0 | 0 | 0 | -- | 8-8 | 4.18 | 1.36 |
| 1983-08-04 | Rick Steirer | R | 27 | L 5-11 | @ SEA | 1 | 2 | - | 5.1 | 5 | 5 | 4 | 1 | 0 | 3 | 0 | 0 | 0 | -- | 0-0 | 6.16 | 1.63 |
| 1983-08-05 | Geoff Zahn | L | 38 | L 1-3 | @ SEA | 17 | 225 | L | 7.0 | 8 | 3 | 3 | 0 | 1 | 4 | 0 | 0 | 0 | -- | 8-6 | 3.46 | 1.26 |
| 1983-08-06 | Mike Witt | R | 23 | L 1-2 | @ SEA | 10 | 57 | L | 5.2 | 8 | 2 | 2 | 0 | 5 | 1 | 0 | 0 | 0 | -- | 5-9 | 4.68 | 1.59 |
| 1983-08-07 | Ken Forsch | R | 37 | W 4-3 | @ SEA | 23 | 229 | W | 7.1 | 9 | 3 | 3 | 0 | 3 | 3 | 0 | 0 | 0 | -- | 10-7 | 3.44 | 1.21 |
| 1983-08-08 | Tommy John | L | 40 | W 2-4 | vs MIN | 24 | 559 | L | 7.1 | 9 | 4 | 4 | 2 | 1 | 3 | 0 | 0 | 0 | -- | 8-9 | 4.22 | 1.36 |
| 1983-08-09 | Rick Steirer | R | 27 | L 8-2 | vs MIN | 2 | 3 | W | 6.0 | 7 | 2 | 2 | 0 | 2 | 2 | 0 | 0 | 0 | -- | 1-0 | 5.40 | 1.60 |
| 1983-08-10 | Geoff Zahn | L | 38 | W 1-4 | vs MIN | 18 | 226 | L | 9.0 | 7 | 4 | 4 | 3 | 1 | 4 | 0 | 0 | 0 | -- | 8-7 | 3.49 | 1.24 |
| 1983-08-12 | Mike Witt | R | 23 | W 6-7 | vs SEA | 11 | 58 | - | 4.1 | 7 | 4 | 4 | 0 | 3 | 4 | 0 | 0 | 0 | -- | 5-9 | 4.85 | 1.63 |
| 1983-08-13 | Ken Forsch | R | 37 | L 10-5 | vs SEA | 24 | 230 | W | 5.1 | 6 | 4 | 4 | 1 | 4 | 3 | 0 | 0 | 0 | -- | 11-7 | 3.55 | 1.23 |
| 1983-08-14 | Tommy John | L | 40 | L 7-2 | vs SEA | 25 | 560 | W | 9.0 | 5 | 2 | 2 | 2 | 1 | 4 | 0 | 0 | 0 | -- | 9-9 | 4.11 | 1.33 |
| 1983-08-15 | Geoff Zahn | L | 38 | L 0-5 | @ OAK | 19 | 227 | L | 6.0 | 13 | 5 | 4 | 1 | 1 | 2 | 0 | 0 | 0 | -- | 8-8 | 3.60 | 1.29 |
| 1983-08-16 | Rick Steirer | R | 27 | L 0-4 | @ OAK | 3 | 4 | L | 7.1 | 12 | 4 | 3 | 0 | 0 | 1 | 0 | 0 | 0 | -- | 1-1 | 4.91 | 1.58 |
| 1983-08-17 | Mike Witt | R | 23 | W 6-5 | @ OAK | 12 | 59 | W | 6.2 | 8 | 3 | 3 | 1 | 3 | 2 | 0 | 0 | 0 | -- | 6-9 | 4.78 | 1.62 |
| 1983-08-19 | Ken Forsch | R | 37 | L 6-11 | @ NYA | 25 | 231 | L | 1.1 | 6 | 4 | 4 | 1 | 2 | 1 | 0 | 0 | 0 | -- | 11-8 | 3.71 | 1.27 |
| 1983-08-20 | Tommy John | L | 40 | L 2-6 | @ NYA | 26 | 561 | L | 8.0 | 10 | 6 | 5 | 1 | 3 | 1 | 0 | 0 | 0 | -- | 9-10 | 4.17 | 1.34 |
| 1983-08-21 | Geoff Zahn | L | 38 | L 1-2 | @ NYA | 20 | 228 | L | 8.2 | 6 | 2 | 0 | 0 | 4 | 1 | 0 | 0 | 0 | -- | 8-9 | 3.38 | 1.28 |
| 1983-08-22 | Rick Steirer | R | 27 | W 7-3 | @ CLE | 4 | 5 | - | 8.1 | 6 | 3 | 3 | 0 | 1 | 3 | 0 | 0 | 0 | -- | 1-1 | 4.61 | 1.44 |
| 1983-08-23 | Mike Witt | R | 23 | W 5-2 | @ CLE | 13 | 60 | W | 8.0 | 5 | 2 | 2 | 0 | 4 | 4 | 0 | 0 | 0 | -- | 7-9 | 4.61 | 1.59 |
| 1983-08-24 | John Curtis | L | 35 | L 0-1 | @ MIL | 1 | 197 | - | 8.1 | 5 | 0 | 0 | 0 | 5 | 2 | 0 | 0 | 0 | -- | 1-1 | 3.88 | 1.49 |
| 1983-08-25 | Tommy John | L | 40 | L 0-7 | @ MIL | 27 | 562 | L | 5.0 | 13 | 7 | 7 | 1 | 0 | 0 | 0 | 0 | 0 | -- | 9-11 | 4.40 | 1.38 |
| 1983-08-26 | Geoff Zahn | L | 38 | W 2-3 | vs NYA | 21 | 229 | L | 9.0 | 8 | 3 | 3 | 2 | 3 | 2 | 0 | 0 | 0 | -- | 8-10 | 3.36 | 1.27 |
| 1983-08-27 | Rick Steirer | R | 27 | L 7-6 | vs NYA | 5 | 6 | - | 5.0 | 9 | 5 | 3 | 1 | 3 | 3 | 0 | 0 | 0 | -- | 1-1 | 4.70 | 1.54 |
| 1983-08-28 | Ken Forsch | R | 37 | W 3-7 | vs NYA | 26 | 232 | L | 5.1 | 8 | 6 | 6 | 0 | 1 | 0 | 0 | 0 | 0 | -- | 11-9 | 3.91 | 1.28 |
| 1983-08-29 | Mike Witt | R | 23 | W 4-6 | vs CLE | 14 | 61 | L | 6.0 | 8 | 5 | 5 | 1 | 4 | 2 | 0 | 0 | 0 | -- | 7-10 | 4.75 | 1.61 |
| 1983-08-30 | Tommy John | L | 40 | L 10-6 | vs CLE | 28 | 563 | - | 4.1 | 5 | 6 | 6 | 0 | 7 | 2 | 0 | 0 | 0 | -- | 9-11 | 4.57 | 1.40 |
| 1983-08-31 | Geoff Zahn | L | 38 | W 5-7 | vs CLE | 22 | 230 | - | 5.2 | 10 | 3 | 3 | 1 | 3 | 1 | 0 | 0 | 0 | -- | 8-10 | 3.40 | 1.30 |
| 1983-09-02 | Ken Forsch | R | 37 | L 6-5 | vs MIL | 27 | 233 | - | 6.1 | 7 | 4 | 3 | 0 | 3 | 1 | 0 | 0 | 0 | -- | 11-9 | 3.93 | 1.29 |
| 1983-09-03 | Mike Witt | R | 23 | W 3-4 | vs MIL | 15 | 62 | L | 8.0 | 9 | 4 | 4 | 0 | 2 | 2 | 0 | 0 | 0 | -- | 7-11 | 4.74 | 1.59 |
| 1983-09-04 | Tommy John | L | 40 | L 5-3 | vs MIL | 29 | 564 | W | 8.2 | 11 | 3 | 1 | 0 | 3 | 2 | 0 | 0 | 0 | -- | 10-11 | 4.43 | 1.42 |
| 1983-09-05 | Geoff Zahn | L | 38 | L 0-7 | @ TOR | 23 | 231 | L | 4.2 | 10 | 6 | 6 | 1 | 1 | 3 | 0 | 0 | 0 | -- | 8-11 | 3.64 | 1.34 |
| 1983-09-06 | John Curtis | L | 35 | L 4-6 | @ TOR | 2 | 198 | L | 4.2 | 6 | 6 | 5 | 0 | 3 | 2 | 0 | 0 | 0 | -- | 1-2 | 4.31 | 1.58 |
| 1983-09-07 | Ken Forsch | R | 37 | W 9-6 | @ TOR | 28 | 234 | - | 6.0 | 8 | 5 | 5 | 1 | 2 | 0 | 0 | 0 | 0 | -- | 11-9 | 4.04 | 1.30 |
| 1983-09-08 | Mike Witt | R | 23 | L 5-8 | @ CHA | 16 | 63 | L | 2.0 | 5 | 6 | 6 | 2 | 2 | 1 | 0 | 0 | 0 | -- | 7-12 | 5.07 | 1.62 |
| 1983-09-09 | Tommy John | L | 40 | L 0-11 | @ CHA | 30 | 565 | L | 2.1 | 5 | 5 | 5 | 3 | 1 | 1 | 0 | 0 | 0 | -- | 10-12 | 4.59 | 1.43 |
| 1983-09-10 | Geoff Zahn | L | 38 | L 6-7 | @ CHA | 24 | 232 | - | 7.2 | 7 | 1 | 1 | 0 | 3 | 4 | 0 | 0 | 0 | -- | 8-11 | 3.53 | 1.34 |
| 1983-09-11 | Ken Forsch | R | 37 | L 4-5 | @ CHA | 29 | 235 | L | 9.2 | 7 | 5 | 4 | 0 | 3 | 6 | 0 | 0 | 0 | -- | 11-10 | 4.01 | 1.29 |
| 1983-09-13 | Luis Sanchez | R | 30 | W 3-4 | vs KCA | 1 | 1 | L | 2.0 | 5 | 4 | 4 | 0 | 2 | 0 | 0 | 0 | 0 | -- | 9-8 | 3.66 | 1.31 |
| 1983-09-14 | Tommy John | L | 40 | W 0-1 | vs KCA | 31 | 566 | - | 13.0 | 13 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | -- | 10-12 | 4.31 | 1.40 |
| 1983-09-16 | Geoff Zahn | L | 38 | L 8-6 | vs TEX | 25 | 233 | - | 4.1 | 6 | 4 | 4 | 3 | 0 | 2 | 0 | 0 | 0 | -- | 8-11 | 3.65 | 1.34 |
| 1983-09-17 | Ken Forsch | R | 37 | W 2-5 | vs TEX | 30 | 236 | L | 6.1 | 11 | 5 | 5 | 1 | 2 | 3 | 0 | 0 | 0 | -- | 11-11 | 4.11 | 1.31 |
| 1983-09-18 | Mike Witt | R | 23 | W 6-7 | vs TEX | 17 | 64 | - | 2.0 | 6 | 5 | 5 | 1 | 0 | 1 | 0 | 0 | 0 | -- | 7-12 | 5.32 | 1.64 |
| 1983-09-19 | Steve Brown | R | 27 | L 4-8 | @ KCA | 2 | 2 | - | 7.0 | 9 | 4 | 3 | 1 | 3 | 1 | 0 | 0 | 0 | -- | 1-2 | 5.14 | 1.61 |
| 1983-09-19 | John Curtis | L | 36 | L 6-7 | @ KCA | 3 | 199 | - | 7.2 | 10 | 5 | 4 | 0 | 0 | 1 | 0 | 0 | 0 | -- | 1-2 | 3.98 | 1.49 |
| 1983-09-20 | Tommy John | L | 40 | W 6-4 | @ KCA | 32 | 567 | W | 8.1 | 11 | 4 | 4 | 0 | 1 | 1 | 0 | 0 | 0 | -- | 11-12 | 4.32 | 1.40 |
| 1983-09-21 | Geoff Zahn | L | 38 | W 3-0 | @ KCA | 26 | 234 | W | 9.0 | 5 | 0 | 0 | 0 | 1 | 7 | 0 | 0 | 0 | -- | 9-11 | 3.48 | 1.31 |
| 1983-09-22 | Ken Forsch | R | 37 | W 2-3 | vs CHA | 31 | 237 | L | 9.0 | 9 | 3 | 3 | 2 | 2 | 3 | 0 | 0 | 0 | -- | 11-12 | 4.07 | 1.31 |
| 1983-09-23 | Mike Witt | R | 23 | W 1-2 | vs CHA | 18 | 65 | L | 9.0 | 6 | 2 | 0 | 0 | 6 | 3 | 0 | 0 | 0 | -- | 7-13 | 4.96 | 1.61 |
| 1983-09-24 | Steve Brown | R | 27 | W 0-2 | vs CHA | 3 | 3 | L | 9.0 | 7 | 2 | 2 | 0 | 2 | 6 | 0 | 0 | 0 | -- | 1-3 | 4.38 | 1.46 |
| 1983-09-25 | Tommy John | L | 40 | W 5-8 | vs CHA | 33 | 568 | L | 5.2 | 9 | 6 | 4 | 0 | 3 | 3 | 0 | 0 | 0 | -- | 11-13 | 4.36 | 1.42 |
| 1983-09-26 | Geoff Zahn | L | 38 | W 2-3 | vs TOR | 27 | 235 | - | 7.1 | 7 | 2 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | -- | 9-11 | 3.38 | 1.29 |
| 1983-09-27 | Byron McLaughlin | R | 28 | L 7-1 | vs TOR | 7 | 35 | W | 6.0 | 4 | 1 | 1 | 1 | 2 | 3 | 0 | 0 | 0 | -- | 2-4 | 5.14 | 1.52 |
| 1983-09-28 | Mike Witt | R | 23 | W 3-5 | vs TOR | 19 | 66 | L | 6.2 | 8 | 4 | 3 | 1 | 2 | 4 | 0 | 0 | 0 | -- | 7-14 | 4.94 | 1.61 |
| 1983-09-30 | Tommy John | L | 40 | L 3-4 | @ TEX | 34 | 569 | - | 8.0 | 11 | 3 | 3 | 0 | 3 | 2 | 0 | 0 | 0 | -- | 11-13 | 4.33 | 1.43 |
| 1983-10-01 | Geoff Zahn | L | 38 | W 6-5 | @ TEX | 28 | 236 | - | 6.1 | 7 | 5 | 1 | 0 | 1 | 3 | 0 | 0 | 0 | -- | 9-11 | 3.33 | 1.30 |
| 1983-10-02 | Steve Brown | R | 27 | W 2-0 | @ TEX | 4 | 4 | W | 9.0 | 6 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 0 | -- | 2-3 | 3.52 | 1.33 |