Zac Gallen has a 55-36 record with an ERA of 3.37 and 891 strikeouts in 144 appearances for the Diamondbacks in his career.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Z. Gallen | 2019 |  ARI | 8 | 2 | 3 | .400 | 8 | 2.89 | 53 | 0 | 0 | 0 | 43.2 | 37 | 14 | 14 | 5 | 18 | 2 | 0 | 0 | 183 | 2 | 10.92 | 3.71 | 2.94 | 1.03 | 29.0 | 9.8 | 1.26 | .305 | 2.89 | 65 | 3.64 | 84 | 7.63 | 3.4 |
| 2 | | Z. Gallen | 2020 | ARI | 12 | 3 | 2 | .600 | 12 | 2.75 | 82 | 0 | 0 | 0 | 72.0 | 55 | 22 | 24 | 9 | 25 | 2 | 0 | 0 | 291 | 4 | 10.25 | 3.13 | 3.28 | 1.13 | 28.2 | 8.6 | 1.11 | .266 | 3.00 | 61 | 3.65 | 84 | 6.88 | 5.7 |
| 3 | | Z. Gallen | 2021 | ARI | 23 | 4 | 10 | .286 | 23 | 4.30 | 139 | 1 | 1 | 0 | 121.1 | 108 | 58 | 61 | 19 | 49 | 5 | 0 | 1 | 523 | 6 | 10.31 | 3.63 | 2.84 | 1.41 | 26.6 | 9.4 | 1.29 | .286 | 4.52 | 103 | 4.24 | 103 | 8.01 | -2 |
| 4 | | Z. Gallen | 2022 | ARI | 31 | 12 | 4 | .750 | 31 | 2.54 | 192 | 0 | 0 | 0 | 184.0 | 121 | 52 | 56 | 15 | 47 | 12 | 0 | 0 | 714 | 5 | 9.39 | 2.30 | 4.09 | 0.73 | 26.9 | 6.6 | 0.91 | .237 | 2.74 | 63 | 3.04 | 79 | 5.92 | 17.2 |
| 5 | | Z. Gallen | 2023 | ARI | 34 | 17 | 8 | .680 | 34 | 3.47 | 220 | 1 | 1 | 0 | 210.0 | 188 | 81 | 87 | 22 | 47 | 5 | 0 | 0 | 846 | 8 | 9.43 | 2.01 | 4.68 | 0.94 | 26.0 | 5.6 | 1.12 | .301 | 3.73 | 78 | 3.26 | 77 | 8.06 | 23.4 |
| 6 | | Z. Gallen | 2024 |  ARI | 28 | 14 | 5 | .737 | 28 | 3.65 | 156 | 0 | 0 | 0 | 148.0 | 133 | 60 | 62 | 13 | 54 | 4 | 0 | 0 | 621 | 5 | 9.49 | 3.28 | 2.89 | 0.79 | 25.1 | 8.7 | 1.26 | .305 | 3.77 | 87 | 3.37 | 86 | 8.09 | 9.4 |
| 7 | | Z. Gallen | 2025 | AZ | 8 | 3 | 4 | .429 | 8 | 4.37 | 49 | 0 | 0 | 0 | 45.1 | 34 | 22 | 22 | 6 | 21 | 1 | 0 | 0 | 191 | 1 | 9.73 | 4.17 | 2.33 | 1.19 | 25.7 | 11.0 | 1.21 | .246 | 4.37 | 104 | 4.13 | 105 | 6.75 | -1.1 |
| Total | 144 | 55 | 36 | .604 | 144 | 3.37 | 891 | 2 | 2 | 0 | 824.1 | 676 | 309 | 326 | 89 | 261 | 31 | 0 | 1 | 3,369 | 31 | 9.73 | 2.85 | 3.41 | 0.97 | 26.4 | 7.7 | 1.14 | .280 | 3.56 | 79 | 3.48 | 85 | 7.38 | 55.9 |
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HR
54
4th
R
205
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SO
346
10th
ERA
4.51
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