Spencer Giesting
#37 P · B/T: L/L · 6' 4", 200 lb · Age 25 · Fairfield, OH, USA · Draft: 2022 Rd 11 #318 (AZ) — UNC Charlotte · ACL D-backs (Arizona Diamondbacks)
Career Graph
Pitching
| Season | Team | W | L | SV | G | GS | QS | IP | IP/G | SO | K/9 | BB/9 | ERA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Triple-A (AAA) | |||||||||||||
| 2025 | RNO | 5 | 7 | 0 | 17 | 17 | 6 | 79.1 | 4.7 | 72 | 8.2 | 5.1 | 6.47 |
| 2026 | RNO | 3 | 2 | 1 | 33 | 1 | — | 52.2 | 1.6 | 68 | 11.6 | 4.6 | 4.61 |
| AAA Total | 8 | 9 | 1 | 50 | 18 | 6 | 132.0 | 2.6 | 140 | 9.5 | 4.9 | 5.73 | |
| Double-A (AA) | |||||||||||||
| 2024 | AMA | 4 | 7 | 0 | 15 | 15 | — | 81.1 | 5.4 | 87 | 9.6 | 3.4 | 4.65 |
| 2025 | AMA | 3 | 2 | 0 | 10 | 10 | 4 | 56.1 | 5.6 | 59 | 9.4 | 3.0 | 3.67 |
| AA Total | 7 | 9 | 0 | 25 | 25 | 4 | 137.2 | 5.5 | 146 | 9.5 | 3.3 | 4.25 | |
| High-A (A+) | |||||||||||||
| 2023 | HIL | 7 | 6 | 0 | 24 | 24 | — | 117.0 | 4.9 | 124 | 9.5 | 5.5 | 4.00 |
| 2024 | HIL | 5 | 3 | 0 | 10 | 10 | — | 60.0 | 6.0 | 67 | 10.1 | 2.0 | 1.50 |
| A+ Total | 12 | 9 | 0 | 34 | 34 | — | 177.0 | 5.2 | 191 | 9.7 | 4.3 | 3.15 | |
| Single-A (A) | |||||||||||||
| 2022 | VIS | 0 | 1 | 0 | 7 | 4 | — | 13.1 | 1.9 | 16 | 10.8 | 5.4 | 6.08 |
| A Total | 0 | 1 | 0 | 7 | 4 | — | 13.1 | 1.9 | 16 | 10.8 | 5.4 | 6.08 | |
| Rookie (Rk) | |||||||||||||
| 2022 | A-DBA | 0 | 0 | 0 | 2 | 0 | — | 2.0 | 1.0 | 3 | 13.5 | 9.0 | 13.50 |
| 2026 | A-DBA | 0 | 1 | 0 | 2 | 0 | — | 3.1 | 1.7 | 7 | 18.9 | 0.0 | 2.70 |
| Rk Total | 0 | 1 | 0 | 4 | 0 | — | 5.1 | 1.3 | 10 | 16.9 | 3.4 | 6.75 | |
| Minors Total | 27 | 29 | 1 | 120 | 81 | 10 | 465.1 | 3.9 | 503 | 9.7 | 4.2 | 4.33 | |
Fielding
| Season | Team | Pos | G | Inn | PO | A | E | FPCT |
|---|---|---|---|---|---|---|---|---|
| Triple-A (AAA) | ||||||||
| 2025 | RNO | P | 17 | 79.1 | 1 | 8 | 3 | .750 |
| 2026 | RNO | P | 33 | 52.2 | 5 | 4 | 0 | 1.000 |
| AAA Total | — | 50 | 132.0 | 6 | 12 | 3 | .857 | |
| Double-A (AA) | ||||||||
| 2024 | AMA | P | 15 | 81.1 | 2 | 6 | 0 | 1.000 |
| 2025 | AMA | P | 10 | 56.1 | 4 | 3 | 0 | 1.000 |
| AA Total | — | 25 | 137.2 | 6 | 9 | 0 | 1.000 | |
| High-A (A+) | ||||||||
| 2023 | HIL | P | 24 | 117.0 | 6 | 8 | 3 | .824 |
| 2024 | HIL | P | 10 | 60.0 | 1 | 6 | 0 | 1.000 |
| A+ Total | — | 34 | 177.0 | 7 | 14 | 3 | .875 | |
| Single-A (A) | ||||||||
| 2022 | VIS | P | 7 | 13.1 | 1 | 0 | 0 | 1.000 |
| A Total | — | 7 | 13.1 | 1 | 0 | 0 | 1.000 | |
| Rookie (Rk) | ||||||||
| 2022 | A-DBA | P | 2 | 2.0 | 0 | 0 | 0 | .000 |
| 2026 | A-DBA | P | 2 | 3.1 | 0 | 1 | 0 | 1.000 |
| Rk Total | — | 4 | 5.1 | 0 | 1 | 0 | 1.000 | |
| Minors Total | — | 120 | 465.1 | 20 | 36 | 6 | .903 | |
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