Jackson Steensma
Seattle Mariners (A)P
Age: 22
Bats/Throws: S/R
6'4" / 244
DOB: 3/12/2004
(22 years, 6 months, 5 days)
P
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In-Season ProjectionsMinor LeaguesCollege
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | APP | NCAA | 19 | 3 | 1 | 7 | 22 | 0 | 27.1 | 11.20 | 5.60 | 0.66 | .328 | 71.1% | 4.28 | 4.95 | |||||||||
| 2024 | APP | NCAA | 20 | 6 | 2 | 0 | 14 | 14 | 67.0 | 9.94 | 2.82 | 1.75 | .280 | 80.8% | 4.03 | 5.37 | |||||||||
| 2026 | SEA | A | 22 | 0 | 6 | 0 | 15 | 12 | 43.1 | 12.67 | 2.08 | 1.66 | .298 | 67.9% | 45.0% | 22.2% | 4.57 | 4.83 | 3.79 | ||||||
| 2026 | Steamer | ROS | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 6.54 | 4.37 | 1.39 | .286 | 71.0% | 4.98 | 5.24 | 0.0 | ||||||||
| 2026 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 1 | 2.9 | 8.01 | 3.39 | 1.28 | .278 | 68.4% | 4.37 | 4.48 | 0.0 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | APP | NCAA | 19 | 3 | 1 | 7 | 22 | 0 | 27.1 | 11.20 | 5.60 | 0.66 | .328 | 71.1% | 4.28 | 4.95 | |||||||||
| 2024 | APP | NCAA | 20 | 6 | 2 | 0 | 14 | 14 | 67.0 | 9.94 | 2.82 | 1.75 | .280 | 80.8% | 4.03 | 5.37 | |||||||||
| 2026 | SEA | A | 22 | 0 | 6 | 0 | 15 | 12 | 43.1 | 12.67 | 2.08 | 1.66 | .298 | 67.9% | 45.0% | 22.2% | 4.57 | 4.83 | 3.79 | ||||||
| 2026 | Steamer | ROS | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 6.54 | 4.37 | 1.39 | .286 | 71.0% | 4.98 | 5.24 | 0.0 | ||||||||
| 2026 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 1 | 2.9 | 8.01 | 3.39 | 1.28 | .278 | 68.4% | 4.37 | 4.48 | 0.0 |
In-Season ProjectionsMinor LeaguesCollege
In-Season ProjectionsMinor LeaguesAveragesCollege
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | APP | NCAA | 11.20 | 5.60 | 2.00 | 0.66 | 27.4% | 13.7% | 13.7% | .233 | 1.50 | .328 | 71.1% | 4.95 | ||||||
| 2024 | APP | NCAA | 9.94 | 2.82 | 3.52 | 1.75 | 26.4% | 7.5% | 18.9% | .235 | 1.21 | .280 | 80.8% | 5.37 | ||||||
| 2026 | SEA | A | 12.67 | 2.08 | 6.10 | 1.66 | 34.9% | 5.7% | 29.1% | .221 | 1.06 | .298 | 67.9% | 83 | 90 | 4.83 | ||||
| 2026 | Steamer | ROS | 6.54 | 4.37 | 1.50 | 1.39 | 16.2% | 10.8% | 5.4% | .262 | 1.52 | .286 | 71.0% | 5.24 | ||||||
| 2026 | OOPSY | ROS | 8.01 | 3.39 | 2.36 | 1.28 | 21.9% | 9.3% | 12.6% | .238 | 1.25 | .278 | 68.4% | 4.48 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | APP | NCAA | 11.20 | 5.60 | 2.00 | 0.66 | 27.4% | 13.7% | 13.7% | .233 | 1.50 | .328 | 71.1% | 4.95 | ||||||
| 2024 | APP | NCAA | 9.94 | 2.82 | 3.52 | 1.75 | 26.4% | 7.5% | 18.9% | .235 | 1.21 | .280 | 80.8% | 5.37 | ||||||
| 2026 | SEA | A | 12.67 | 2.08 | 6.10 | 1.66 | 34.9% | 5.7% | 29.1% | .221 | 1.06 | .298 | 67.9% | 83 | 90 | 4.83 | ||||
| 2026 | Steamer | ROS | 6.54 | 4.37 | 1.50 | 1.39 | 16.2% | 10.8% | 5.4% | .262 | 1.52 | .286 | 71.0% | 5.24 | ||||||
| 2026 | OOPSY | ROS | 8.01 | 3.39 | 2.36 | 1.28 | 21.9% | 9.3% | 12.6% | .238 | 1.25 | .278 | 68.4% | 4.48 |
