Aiden Butler
Seattle Mariners (A)P
Age: 22
Bats/Throws: R/R
6'6" / 193
DOB: 9/25/2003
(22 years, 11 months, 3 days)
P
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Preseason ProjectionsIn-Season ProjectionsMinor Leagues
| Season | Team | Level | Age | W | L | SV | G | GS | IP | divider | K/9 | BB/9 | HR/9 | BABIP | LOB% | GB% | HR/FB | divider | vFA | divider | ERA | xERA | FIP | xFIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | SEA | CPX | 21 | 1 | 0 | 0 | 3 | 0 | 5.2 | 19.06 | 1.59 | 0.00 | .538 | 25.0% | 38.5% | 0.0% | 9.53 | 0.79 | 1.74 | ||||||
| 2025 | SEA | A | 21 | 1 | 5 | 0 | 13 | 13 | 58.2 | 6.14 | 2.30 | 1.53 | .289 | 58.8% | 42.4% | 12.7% | 5.37 | 5.72 | 4.68 | ||||||
| 2025 | SEA | MiLB | 21 | 2 | 5 | 0 | 16 | 13 | 64.1 | 7.27 | 2.24 | 1.40 | .305 | 55.3% | 42.2% | 11.8% | 5.74 | 5.29 | 4.42 | ||||||
| 2026 | Steamer | PROJ | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 4.78 | 4.19 | 1.61 | .290 | 68.9% | 40.2% | 5.71 | 5.92 | 5.75 | 0.0 | ||||||
| 2026 | OOPSY | PROJ | 22 | 0 | 0 | 0 | 1 | 1 | 4.0 | 4.02 | 3.47 | 1.64 | .270 | 64.5% | 5.72 | 5.92 | 0.0 | ||||||||
| 2026 | SEA | A | 22 | 4 | 10 | 0 | 21 | 20 | 83.2 | 8.28 | 3.01 | 1.51 | .393 | 48.0% | 37.3% | 14.0% | 8.39 | 5.85 | 5.63 | ||||||
| 2026 | Steamer | ROS | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 4.41 | 3.81 | 1.67 | .293 | 68.0% | 5.86 | 5.91 | 0.0 | ||||||||
| 2026 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 1 | 4.0 | 3.57 | 3.97 | 1.98 | .278 | 64.2% | 6.54 | 6.69 | -0.1 |
| Season | Team | Level | Age | W | L | SV | G | GS | IP | divider | K/9 | BB/9 | HR/9 | BABIP | LOB% | GB% | HR/FB | divider | vFA | divider | ERA | xERA | FIP | xFIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | SEA | CPX | 21 | 1 | 0 | 0 | 3 | 0 | 5.2 | 19.06 | 1.59 | 0.00 | .538 | 25.0% | 38.5% | 0.0% | 9.53 | 0.79 | 1.74 | ||||||
| 2025 | SEA | A | 21 | 1 | 5 | 0 | 13 | 13 | 58.2 | 6.14 | 2.30 | 1.53 | .289 | 58.8% | 42.4% | 12.7% | 5.37 | 5.72 | 4.68 | ||||||
| 2025 | SEA | MiLB | 21 | 2 | 5 | 0 | 16 | 13 | 64.1 | 7.27 | 2.24 | 1.40 | .305 | 55.3% | 42.2% | 11.8% | 5.74 | 5.29 | 4.42 | ||||||
| 2026 | Steamer | PROJ | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 4.78 | 4.19 | 1.61 | .290 | 68.9% | 40.2% | 5.71 | 5.92 | 5.75 | 0.0 | ||||||
| 2026 | OOPSY | PROJ | 22 | 0 | 0 | 0 | 1 | 1 | 4.0 | 4.02 | 3.47 | 1.64 | .270 | 64.5% | 5.72 | 5.92 | 0.0 | ||||||||
| 2026 | SEA | A | 22 | 4 | 10 | 0 | 21 | 20 | 83.2 | 8.28 | 3.01 | 1.51 | .393 | 48.0% | 37.3% | 14.0% | 8.39 | 5.85 | 5.63 | ||||||
| 2026 | Steamer | ROS | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 4.41 | 3.81 | 1.67 | .293 | 68.0% | 5.86 | 5.91 | 0.0 | ||||||||
| 2026 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 1 | 4.0 | 3.57 | 3.97 | 1.98 | .278 | 64.2% | 6.54 | 6.69 | -0.1 |
Preseason ProjectionsIn-Season ProjectionsMinor Leagues
| Season | Team | Level | W | L | ERA | G | GS | QS | CG | ShO | SV | HLD | BS | IP | TBF | H | R | ER | HR | BB | IBB | HBP | WP | BK | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | SEA | CPX | 1 | 0 | 9.53 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 5.2 | 26 | 7 | 6 | 6 | 0 | 1 | 0 | 0 | 3 | 0 | 12 | |
| 2025 | SEA | A | 1 | 5 | 5.37 | 13 | 13 | 0 | 0 | 0 | 0 | 0 | 58.2 | 257 | 65 | 42 | 35 | 10 | 15 | 0 | 2 | 3 | 1 | 40 | |
| 2025 | SEA | MiLB | 2 | 5 | 5.74 | 16 | 13 | 0 | 0 | 0 | 0 | 0 | 64.1 | 283 | 72 | 48 | 41 | 10 | 16 | 0 | 2 | 6 | 1 | 52 | |
| 2026 | Steamer | PROJ | 0 | 0 | 5.71 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | |||
| 2026 | OOPSY | PROJ | 0 | 0 | 5.72 | 1 | 1 | 0 | 0 | 0 | 4.0 | 18 | 4 | 3 | 3 | 1 | 2 | 0 | 0 | 2 | |||||
| 2026 | SEA | A | 4 | 10 | 8.39 | 21 | 20 | 0 | 0 | 0 | 0 | 0 | 83.2 | 402 | 124 | 90 | 78 | 14 | 28 | 0 | 3 | 6 | 0 | 77 | |
| 2026 | Steamer | ROS | 0 | 0 | 5.86 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | ||||
| 2026 | OOPSY | ROS | 0 | 0 | 6.54 | 1 | 1 | 0 | 0 | 0 | 4.0 | 19 | 5 | 3 | 3 | 1 | 2 | 0 | 0 | 2 |
| Season | Team | Level | W | L | ERA | G | GS | QS | CG | ShO | SV | HLD | BS | IP | TBF | H | R | ER | HR | BB | IBB | HBP | WP | BK | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | SEA | CPX | 1 | 0 | 9.53 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 5.2 | 26 | 7 | 6 | 6 | 0 | 1 | 0 | 0 | 3 | 0 | 12 | |
| 2025 | SEA | A | 1 | 5 | 5.37 | 13 | 13 | 0 | 0 | 0 | 0 | 0 | 58.2 | 257 | 65 | 42 | 35 | 10 | 15 | 0 | 2 | 3 | 1 | 40 | |
| 2025 | SEA | MiLB | 2 | 5 | 5.74 | 16 | 13 | 0 | 0 | 0 | 0 | 0 | 64.1 | 283 | 72 | 48 | 41 | 10 | 16 | 0 | 2 | 6 | 1 | 52 | |
| 2026 | Steamer | PROJ | 0 | 0 | 5.71 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | |||
| 2026 | OOPSY | PROJ | 0 | 0 | 5.72 | 1 | 1 | 0 | 0 | 0 | 4.0 | 18 | 4 | 3 | 3 | 1 | 2 | 0 | 0 | 2 | |||||
| 2026 | SEA | A | 4 | 10 | 8.39 | 21 | 20 | 0 | 0 | 0 | 0 | 0 | 83.2 | 402 | 124 | 90 | 78 | 14 | 28 | 0 | 3 | 6 | 0 | 77 | |
| 2026 | Steamer | ROS | 0 | 0 | 5.86 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | ||||
| 2026 | OOPSY | ROS | 0 | 0 | 6.54 | 1 | 1 | 0 | 0 | 0 | 4.0 | 19 | 5 | 3 | 3 | 1 | 2 | 0 | 0 | 2 |
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesAverages
| Season | Team | Level | K/9 | BB/9 | K/BB | HR/9 | divider | K% | BB% | K-BB% | divider | AVG | WHIP | BABIP | LOB% | divider | ERA- | FIP- | divider | FIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | SEA | CPX | 19.06 | 1.59 | 12.00 | 0.00 | 46.2% | 3.8% | 42.3% | .280 | 1.41 | .538 | 25.0% | 196 | 16 | 0.79 | ||||
| 2025 | SEA | A | 6.14 | 2.30 | 2.67 | 1.53 | 15.6% | 5.8% | 9.7% | .271 | 1.36 | .289 | 58.8% | 122 | 133 | 5.72 | ||||
| 2025 | SEA | MiLB | 7.27 | 2.24 | 3.25 | 1.40 | 18.4% | 5.7% | 12.7% | .272 | 1.37 | .305 | 55.3% | 129 | 123 | 5.29 | ||||
| 2026 | Steamer | PROJ | 4.78 | 4.19 | 1.14 | 1.61 | 11.6% | 10.2% | 1.4% | .283 | 1.62 | .290 | 68.9% | 5.92 | ||||||
| 2026 | OOPSY | PROJ | 4.02 | 3.47 | 1.16 | 1.64 | 10.0% | 8.6% | 1.3% | .274 | 1.49 | .270 | 64.5% | 5.92 | ||||||
| 2026 | SEA | A | 8.28 | 3.01 | 2.75 | 1.51 | 19.2% | 7.0% | 12.2% | .334 | 1.82 | .393 | 48.0% | 152 | 109 | 5.85 | ||||
| 2026 | Steamer | ROS | 4.41 | 3.81 | 1.16 | 1.67 | 10.7% | 9.3% | 1.5% | .290 | 1.61 | .293 | 68.0% | 5.91 | ||||||
| 2026 | OOPSY | ROS | 3.57 | 3.97 | 0.90 | 1.98 | 8.4% | 9.3% | -0.9% | .289 | 1.66 | .278 | 64.2% | 6.69 |
| Season | Team | Level | K/9 | BB/9 | K/BB | HR/9 | divider | K% | BB% | K-BB% | divider | AVG | WHIP | BABIP | LOB% | divider | ERA- | FIP- | divider | FIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | SEA | CPX | 19.06 | 1.59 | 12.00 | 0.00 | 46.2% | 3.8% | 42.3% | .280 | 1.41 | .538 | 25.0% | 196 | 16 | 0.79 | ||||
| 2025 | SEA | A | 6.14 | 2.30 | 2.67 | 1.53 | 15.6% | 5.8% | 9.7% | .271 | 1.36 | .289 | 58.8% | 122 | 133 | 5.72 | ||||
| 2025 | SEA | MiLB | 7.27 | 2.24 | 3.25 | 1.40 | 18.4% | 5.7% | 12.7% | .272 | 1.37 | .305 | 55.3% | 129 | 123 | 5.29 | ||||
| 2026 | Steamer | PROJ | 4.78 | 4.19 | 1.14 | 1.61 | 11.6% | 10.2% | 1.4% | .283 | 1.62 | .290 | 68.9% | 5.92 | ||||||
| 2026 | OOPSY | PROJ | 4.02 | 3.47 | 1.16 | 1.64 | 10.0% | 8.6% | 1.3% | .274 | 1.49 | .270 | 64.5% | 5.92 | ||||||
| 2026 | SEA | A | 8.28 | 3.01 | 2.75 | 1.51 | 19.2% | 7.0% | 12.2% | .334 | 1.82 | .393 | 48.0% | 152 | 109 | 5.85 | ||||
| 2026 | Steamer | ROS | 4.41 | 3.81 | 1.16 | 1.67 | 10.7% | 9.3% | 1.5% | .290 | 1.61 | .293 | 68.0% | 5.91 | ||||||
| 2026 | OOPSY | ROS | 3.57 | 3.97 | 0.90 | 1.98 | 8.4% | 9.3% | -0.9% | .289 | 1.66 | .278 | 64.2% | 6.69 |

