Geoff Zahn
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1983-04-08 | CAL | @ OAK | L, 5-3 | 7.1 | 9 | 4 | 3 | 2 | 5 | 31 | 1 | 0 | 0 | 10 | 5 | SP, L |
| 1983-04-13 | CAL | vs. SEA | W, 6-1 | 9.0 | 4 | 1 | 1 | 0 | 7 | 30 | 0 | 0 | 0 | 10 | 9 | SP, W, CG |
| 1983-04-21 | CAL | vs. OAK | W, 6-2 | 9.0 | 5 | 2 | 2 | 5 | 7 | 34 | 1 | 0 | 1 | 11 | 6 | SP, W, CG |
| 1983-04-27 | CAL | vs. DET | W, 13-3 | 6.2 | 8 | 3 | 3 | 1 | 3 | 30 | 1 | 0 | 0 | 9 | 7 | SP, W |
| 1983-05-03 | CAL | @ BAL | L, 4-2 | 7.2 | 10 | 4 | 3 | 2 | 4 | 33 | 2 | 0 | 1 | 6 | 10 | SP, L |
| 1983-05-07 | CAL | @ DET | W, 6-5 | 6.1 | 9 | 5 | 4 | 1 | 3 | 30 | 0 | 1 | 3 | 14 | 2 | SP |
| 1983-05-13 | CAL | vs. MIN | L, 5-4 | 6.1 | 8 | 4 | 3 | 1 | 1 | 27 | 1 | 0 | 0 | 8 | 8 | SP |
| 1983-05-18 | CAL | @ SEA | L, 2-1 | 8.0 | 6 | 2 | 1 | 3 | 3 | 33 | 1 | 0 | 0 | 9 | 11 | SP, L, CG |
| 1983-05-23 | CAL | vs. NYY | W, 3-0 | 9.0 | 6 | 0 | 0 | 3 | 0 | 34 | 2 | 0 | 0 | 12 | 12 | SP, W, CG, SHO |
| 1983-05-28 | CAL | @ CLE | W, 7-4 | 9.0 | 9 | 4 | 4 | 2 | 0 | 36 | 2 | 0 | 0 | 11 | 14 | SP, W, CG |
| 1983-06-02 | CAL | @ NYY | W, 9-8 | 5.0 | 9 | 7 | 6 | 2 | 2 | 26 | 1 | 0 | 2 | 6 | 6 | SP |
| 1983-07-11 | CAL | @ DET | L, 12-6 | 0.2 | 5 | 5 | 5 | 2 | 1 | 10 | 1 | 0 | 1 | 1 | 0 | SP, L |
| 1983-07-13 | CAL | @ DET | L, 7-1 | 1.0 | 1 | 0 | 0 | 1 | 0 | 5 | 0 | 0 | 0 | 1 | 2 | RP |
| 1983-07-16 | CAL | @ BAL | W, 8-5 | 8.2 | 9 | 5 | 4 | 2 | 6 | 37 | 1 | 0 | 2 | 7 | 12 | SP, W |
| 1983-07-21 | CAL | vs. DET | W, 3-2 | 6.2 | 6 | 1 | 1 | 1 | 0 | 27 | 4 | 0 | 0 | 9 | 11 | SP, W |
| 1983-07-26 | CAL | vs. BAL | L, 5-4 | 9.0 | 7 | 5 | 5 | 3 | 3 | 36 | 2 | 0 | 1 | 14 | 7 | SP, L, CG |
| 1983-07-31 | CAL | vs. OAK | W, 4-0 | 9.0 | 7 | 0 | 0 | 0 | 2 | 31 | 1 | 0 | 0 | 9 | 13 | SP, W, CG, SHO |
| 1983-08-05 | CAL | @ SEA | L, 3-1 | 7.0 | 8 | 3 | 3 | 1 | 4 | 31 | 1 | 0 | 0 | 5 | 11 | SP, L |
| 1983-08-10 | CAL | vs. MIN | L, 4-1 | 9.0 | 7 | 4 | 4 | 1 | 4 | 36 | 1 | 0 | 3 | 15 | 8 | SP, L, CG |
| 1983-08-15 | CAL | @ OAK | L, 5-0 | 6.0 | 13 | 5 | 4 | 1 | 2 | 28 | 0 | 1 | 1 | 7 | 4 | SP, L |
| 1983-08-21 | CAL | @ NYY | L, 2-1 | 8.2 | 6 | 2 | 0 | 4 | 1 | 38 | 0 | 0 | 0 | 9 | 15 | SP, L, CG |
| 1983-08-26 | CAL | vs. NYY | L, 3-2 | 9.0 | 8 | 3 | 3 | 3 | 2 | 37 | 1 | 0 | 2 | 17 | 7 | SP, L, CG |
| 1983-08-31 | CAL | vs. CLE | L, 7-5 | 5.2 | 10 | 3 | 3 | 3 | 1 | 27 | 1 | 0 | 1 | 5 | 7 | SP |
| 1983-09-05 | CAL | @ TOR | L, 7-0 | 4.2 | 10 | 6 | 6 | 1 | 3 | 25 | 0 | 0 | 1 | 8 | 3 | SP, L |
| 1983-09-10 | CAL | @ CHW | L, 7-6 | 7.2 | 7 | 1 | 1 | 3 | 4 | 30 | 3 | 0 | 0 | 9 | 6 | SP |
| 1983-09-16 | CAL | vs. TEX | W, 8-6 | 4.1 | 6 | 4 | 4 | 0 | 2 | 20 | 0 | 0 | 3 | 4 | 7 | SP |
| 1983-09-21 | CAL | @ KCR | W, 3-0 | 9.0 | 5 | 0 | 0 | 1 | 7 | 34 | 1 | 0 | 0 | 14 | 6 | SP, W, CG, SHO |
| 1983-09-26 | CAL | vs. TOR | L, 3-2 | 7.1 | 7 | 2 | 1 | 1 | 1 | 30 | 1 | 0 | 0 | 9 | 9 | SP |
| 1983-10-01 | CAL | @ TEX | W, 6-5 | 6.1 | 7 | 5 | 1 | 1 | 3 | 26 | 0 | 0 | 0 | 6 | 7 | SP |
| Total Games: 29 | ||||||||||||||||