Isaac Stebens
Boston Red Sox (A+)P
Age: 24
Bats/Throws: L/R
5'11" / 194
DOB: 12/5/2001
(24 years, 8 months, 30 days)
P
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Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingCollege
| 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 | OKST | NCAA | 21 | 4 | 1 | 6 | 28 | 0 | 64.1 | 11.89 | 3.36 | 0.14 | .320 | 73.1% | 2.24 | 2.78 | |||||||||
| 2024 | BOS | A | 22 | 0 | 0 | 3 | 6 | 0 | 11.0 | 11.45 | 3.27 | 0.00 | .280 | 76.9% | 37.5% | 0.0% | 0.82 | 2.67 | 3.41 | ||||||
| 2024 | BOS | A+ | 22 | 3 | 3 | 5 | 29 | 0 | 51.1 | 12.80 | 5.44 | 0.70 | .339 | 76.6% | 38.8% | 8.9% | 3.68 | 3.77 | 3.87 | ||||||
| 2024 | BOS | MiLB | 22 | 3 | 3 | 8 | 35 | 0 | 62.1 | 12.56 | 5.05 | 0.58 | .329 | 76.7% | 38.6% | 7.4% | 3.18 | 3.58 | 3.79 | ||||||
| 2025 | BOS | A+ | 23 | 6 | 0 | 9 | 38 | 0 | 50.1 | 10.55 | 5.19 | 0.54 | .276 | 85.5% | 42.4% | 8.1% | 2.15 | 4.03 | 4.05 | ||||||
| 2025 | BOS | ST | 23 | 0 | 0 | 0 | 3 | 0 | 1.1 | 6.75 | 13.50 | 0.00 | .333 | 100.0% | 66.7% | 0.0% | 0.00 | 6.73 | 6.73 | ||||||
| 2026 | Steamer | PROJ | 24 | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.09 | 5.76 | 1.26 | .304 | 69.7% | 42.5% | 5.48 | 5.47 | 5.43 | 0.0 | ||||||
| 2026 | OOPSY | PROJ | 24 | 0 | 0 | 0 | 1 | 0 | 1.5 | 7.11 | 4.88 | 1.22 | .301 | 66.6% | 5.26 | 5.10 | 0.0 | ||||||||
| 2026 | Steamer | ROS | 24 | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.09 | 6.01 | 1.22 | .303 | 69.6% | 5.52 | 5.46 | 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 | OKST | NCAA | 21 | 4 | 1 | 6 | 28 | 0 | 64.1 | 11.89 | 3.36 | 0.14 | .320 | 73.1% | 2.24 | 2.78 | |||||||||
| 2024 | BOS | A | 22 | 0 | 0 | 3 | 6 | 0 | 11.0 | 11.45 | 3.27 | 0.00 | .280 | 76.9% | 37.5% | 0.0% | 0.82 | 2.67 | 3.41 | ||||||
| 2024 | BOS | A+ | 22 | 3 | 3 | 5 | 29 | 0 | 51.1 | 12.80 | 5.44 | 0.70 | .339 | 76.6% | 38.8% | 8.9% | 3.68 | 3.77 | 3.87 | ||||||
| 2024 | BOS | MiLB | 22 | 3 | 3 | 8 | 35 | 0 | 62.1 | 12.56 | 5.05 | 0.58 | .329 | 76.7% | 38.6% | 7.4% | 3.18 | 3.58 | 3.79 | ||||||
| 2025 | BOS | A+ | 23 | 6 | 0 | 9 | 38 | 0 | 50.1 | 10.55 | 5.19 | 0.54 | .276 | 85.5% | 42.4% | 8.1% | 2.15 | 4.03 | 4.05 | ||||||
| 2025 | BOS | ST | 23 | 0 | 0 | 0 | 3 | 0 | 1.1 | 6.75 | 13.50 | 0.00 | .333 | 100.0% | 66.7% | 0.0% | 0.00 | 6.73 | 6.73 | ||||||
| 2026 | Steamer | PROJ | 24 | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.09 | 5.76 | 1.26 | .304 | 69.7% | 42.5% | 5.48 | 5.47 | 5.43 | 0.0 | ||||||
| 2026 | OOPSY | PROJ | 24 | 0 | 0 | 0 | 1 | 0 | 1.5 | 7.11 | 4.88 | 1.22 | .301 | 66.6% | 5.26 | 5.10 | 0.0 | ||||||||
| 2026 | Steamer | ROS | 24 | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.09 | 6.01 | 1.22 | .303 | 69.6% | 5.52 | 5.46 | 0.0 |
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingCollege
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | OKST | NCAA | 4 | 1 | 2.24 | 28 | 0 | 0 | 0 | 6 | 64.1 | 265 | 49 | 22 | 16 | 1 | 24 | 5 | 2 | 0 | 85 | ||||
| 2024 | BOS | A | 0 | 0 | 0.82 | 6 | 0 | 0 | 0 | 3 | 0 | 1 | 11.0 | 45 | 7 | 3 | 1 | 0 | 4 | 0 | 2 | 0 | 0 | 14 | |
| 2024 | BOS | A+ | 3 | 3 | 3.68 | 29 | 0 | 0 | 0 | 5 | 2 | 1 | 51.1 | 233 | 45 | 23 | 21 | 4 | 31 | 0 | 4 | 5 | 0 | 73 | |
| 2024 | BOS | MiLB | 3 | 3 | 3.18 | 35 | 0 | 0 | 0 | 8 | 2 | 2 | 62.1 | 278 | 52 | 26 | 22 | 4 | 35 | 0 | 6 | 5 | 0 | 87 | |
| 2025 | BOS | A+ | 6 | 0 | 2.15 | 38 | 0 | 0 | 0 | 9 | 0 | 1 | 50.1 | 215 | 35 | 14 | 12 | 3 | 29 | 0 | 8 | 2 | 0 | 59 | |
| 2025 | BOS | ST | 0 | 0 | 0.00 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1.1 | 6 | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | |
| 2026 | Steamer | PROJ | 0 | 0 | 5.48 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2026 | OOPSY | PROJ | 0 | 0 | 5.26 | 1 | 0 | 0 | 0 | 0 | 1.5 | 7 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||||
| 2026 | Steamer | ROS | 0 | 0 | 5.52 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | OKST | NCAA | 4 | 1 | 2.24 | 28 | 0 | 0 | 0 | 6 | 64.1 | 265 | 49 | 22 | 16 | 1 | 24 | 5 | 2 | 0 | 85 | ||||
| 2024 | BOS | A | 0 | 0 | 0.82 | 6 | 0 | 0 | 0 | 3 | 0 | 1 | 11.0 | 45 | 7 | 3 | 1 | 0 | 4 | 0 | 2 | 0 | 0 | 14 | |
| 2024 | BOS | A+ | 3 | 3 | 3.68 | 29 | 0 | 0 | 0 | 5 | 2 | 1 | 51.1 | 233 | 45 | 23 | 21 | 4 | 31 | 0 | 4 | 5 | 0 | 73 | |
| 2024 | BOS | MiLB | 3 | 3 | 3.18 | 35 | 0 | 0 | 0 | 8 | 2 | 2 | 62.1 | 278 | 52 | 26 | 22 | 4 | 35 | 0 | 6 | 5 | 0 | 87 | |
| 2025 | BOS | A+ | 6 | 0 | 2.15 | 38 | 0 | 0 | 0 | 9 | 0 | 1 | 50.1 | 215 | 35 | 14 | 12 | 3 | 29 | 0 | 8 | 2 | 0 | 59 | |
| 2025 | BOS | ST | 0 | 0 | 0.00 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1.1 | 6 | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | |
| 2026 | Steamer | PROJ | 0 | 0 | 5.48 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2026 | OOPSY | PROJ | 0 | 0 | 5.26 | 1 | 0 | 0 | 0 | 0 | 1.5 | 7 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||||
| 2026 | Steamer | ROS | 0 | 0 | 5.52 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 |
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingAveragesCollege
| 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 | OKST | NCAA | 11.89 | 3.36 | 3.54 | 0.14 | 32.1% | 9.1% | 23.0% | .208 | 1.13 | .320 | 73.1% | 2.78 | ||||||
| 2024 | BOS | A | 11.45 | 3.27 | 3.50 | 0.00 | 31.1% | 8.9% | 22.2% | .179 | 1.00 | .280 | 76.9% | 20 | 69 | 2.67 | ||||
| 2024 | BOS | A+ | 12.80 | 5.44 | 2.35 | 0.70 | 31.3% | 13.3% | 18.0% | .227 | 1.48 | .339 | 76.6% | 88 | 92 | 3.77 | ||||
| 2024 | BOS | MiLB | 12.56 | 5.05 | 2.49 | 0.58 | 31.3% | 12.6% | 18.7% | .219 | 1.40 | .329 | 76.7% | 76 | 88 | 3.58 | ||||
| 2025 | BOS | A+ | 10.55 | 5.19 | 2.03 | 0.54 | 27.4% | 13.5% | 14.0% | .197 | 1.27 | .276 | 85.5% | 54 | 103 | 4.03 | ||||
| 2025 | BOS | ST | 6.75 | 13.50 | 0.50 | 0.00 | 16.7% | 33.3% | -16.7% | .250 | 2.25 | .333 | 100.0% | 0 | 138 | 6.73 | ||||
| 2026 | Steamer | PROJ | 7.09 | 5.76 | 1.23 | 1.26 | 17.0% | 13.8% | 3.2% | .268 | 1.69 | .304 | 69.7% | 5.47 | ||||||
| 2026 | OOPSY | PROJ | 7.11 | 4.88 | 1.46 | 1.22 | 18.1% | 12.4% | 5.7% | .263 | 1.53 | .301 | 66.6% | 5.10 | ||||||
| 2026 | Steamer | ROS | 7.09 | 6.01 | 1.18 | 1.22 | 16.9% | 14.3% | 2.6% | .267 | 1.72 | .303 | 69.6% | 5.46 |
| 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 | OKST | NCAA | 11.89 | 3.36 | 3.54 | 0.14 | 32.1% | 9.1% | 23.0% | .208 | 1.13 | .320 | 73.1% | 2.78 | ||||||
| 2024 | BOS | A | 11.45 | 3.27 | 3.50 | 0.00 | 31.1% | 8.9% | 22.2% | .179 | 1.00 | .280 | 76.9% | 20 | 69 | 2.67 | ||||
| 2024 | BOS | A+ | 12.80 | 5.44 | 2.35 | 0.70 | 31.3% | 13.3% | 18.0% | .227 | 1.48 | .339 | 76.6% | 88 | 92 | 3.77 | ||||
| 2024 | BOS | MiLB | 12.56 | 5.05 | 2.49 | 0.58 | 31.3% | 12.6% | 18.7% | .219 | 1.40 | .329 | 76.7% | 76 | 88 | 3.58 | ||||
| 2025 | BOS | A+ | 10.55 | 5.19 | 2.03 | 0.54 | 27.4% | 13.5% | 14.0% | .197 | 1.27 | .276 | 85.5% | 54 | 103 | 4.03 | ||||
| 2025 | BOS | ST | 6.75 | 13.50 | 0.50 | 0.00 | 16.7% | 33.3% | -16.7% | .250 | 2.25 | .333 | 100.0% | 0 | 138 | 6.73 | ||||
| 2026 | Steamer | PROJ | 7.09 | 5.76 | 1.23 | 1.26 | 17.0% | 13.8% | 3.2% | .268 | 1.69 | .304 | 69.7% | 5.47 | ||||||
| 2026 | OOPSY | PROJ | 7.11 | 4.88 | 1.46 | 1.22 | 18.1% | 12.4% | 5.7% | .263 | 1.53 | .301 | 66.6% | 5.10 | ||||||
| 2026 | Steamer | ROS | 7.09 | 6.01 | 1.18 | 1.22 | 16.9% | 14.3% | 2.6% | .267 | 1.72 | .303 | 69.6% | 5.46 |
