Isaac Coffey
P Worcester Red Sox| Year | Age | Lvl / Team | G | GS | IP | ERA | FIP | K% | BB% | WAR | MLE rates |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | 24 | AABOS | 24 | 21 | 114 | 3.17 | 2.87 | 30.0% | 10.3% | — | K 24.3% · BB 11.4% · FIP 3.67 |
| 2025 | 25 | MIX2 levels | 17 | 12 | 47 | 5.51 | 5.78 | 21.7% | 14.0% | — | K 16.7% · BB 13.1% · FIP 6.67 |
| 2026 | 26 | MIX2 levels | 8 | 6 | 24 | 4.18 | 3.78 | 23.1% | 8.3% | — | K 22.3% · BB 8.2% · FIP 3.82 |
| 2027PROJ | 27 | MLBBOS | 1 | 1 | 2 | 4.90 | 4.90 | 20.9% | 10.8% | 0.0 | |
| 2028PROJ43% MLB | 28 | MLBBOS | 2 | 2 | 9 | 4.89 | 4.92 | 21.0% | 10.8% | 0.0 |
Grades · Contract
Contract
No contract data on file. Pre-MLB players and minor-league free agents do not yet have salary projections — entries are added at first 40-man roster placement.
Career Stats + Projections
Methodology▸ how WAR & MLE are computed
Stats are park-neutral MLB equivalents. The "TEAM" column shows current org affiliation only — we do NOT project at that team's park.
Rates (K%, BB%, HR-BF) are park-stripped; MiLB stat lines are translated to their MLB-equivalent via per-level MLE factors.
WAR is computed from projected runs prevented vs a replacement pitcher (the marginal arm a team would call up if this pitcher were unavailable) — calibrated to the standard WAR scale.
| Year | Age | Lvl | Team | G | GS | IP | BF | K | BB | HR | GS% | IP/G | K% | BB% | K-BB% | HR% | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ▸ Career — actual stats, one row per year (as recorded, no adjustments) | |||||||||||||||||||
| ▸ Career — adjusted (each season translated to a park/league-neutral MLB-equivalent line; levels combined per year) | |||||||||||||||||||
| ▸ Model inputs — neutral MLE (past 3 seasons + 2027 so far) | |||||||||||||||||||
| 2022 | 22 | ROK MLE | FCL Red Sox | 2 | 0 | 2 | 8 | 0 | 2 | 0 | 0% | 0.8 | 0.0% | 25.0% | -25.0% | 0.0% | 10.80 | 6.27 | — |
| 2022 | 22 | ROK RAW | FCL Red Sox | 2 | 0 | 2 | 8 | 0 | 2 | 0 | 0% | 0.8 | 0.0% | 25.0% | -25.0% | 0.0% | 10.80 | 6.70 | — |
| 2023 | 23 | MIX MLE | 2 levels | 23 | 22 | 118 | 492 | 155 | 33 | 22 | 96% | 5.1 | 24.8% | 7.5% | 17.4% | 5.6% | 3.37 | 5.00 | — |
| 2023 | 23 | MIX RAW | 2 levels | 23 | 22 | 118 | 492 | 155 | 33 | 22 | 96% | 5.1 | 31.5% | 6.7% | 24.8% | 4.5% | 3.37 | 3.74 | — |
| 2024 | 24 | AA MLE | Portland Sea Dogs | 24 | 21 | 114 | 494 | 148 | 51 | 9 | 88% | 4.7 | 24.3% | 11.4% | 12.9% | 2.1% | 3.17 | 3.67 | — |
| 2024 | 24 | AA MLE | Portland Sea Dogs | 24 | 21 | 114 | 494 | 148 | 51 | 9 | 88% | 4.7 | 24.3% | 11.4% | 12.9% | 2.1% | 3.17 | 3.67 | — |
| 2024 | 24 | AA RAW | Portland Sea Dogs | 24 | 21 | 114 | 494 | 148 | 51 | 9 | 88% | 4.7 | 30.0% | 10.3% | 19.6% | 1.8% | 3.17 | 2.87 | — |
| 2025 | 25 | MIX MLE | 2 levels | 17 | 12 | 47 | 221 | 48 | 31 | 10 | 71% | 2.8 | 16.7% | 13.1% | 3.6% | 6.0% | 5.51 | 6.67 | — |
| 2025 | 25 | MIX MLE | 2 levels | 17 | 12 | 47 | 221 | 48 | 31 | 10 | 71% | 2.8 | 16.7% | 13.1% | 3.6% | 6.0% | 5.51 | 6.67 | — |
| 2025 | 25 | MIX RAW | 2 levels | 17 | 12 | 47 | 221 | 48 | 31 | 10 | 71% | 2.8 | 21.7% | 14.0% | 7.7% | 4.5% | 5.51 | 5.78 | — |
| 2026 | 26 | MIX MLE | 2 levels | 8 | 6 | 24 | 108 | 25 | 9 | 3 | 75% | 3.0 | 22.3% | 8.2% | 14.2% | 2.9% | 4.18 | 3.82 | — |
| 2026 | 26 | MIX MLE | 2 levels | 8 | 6 | 24 | 108 | 25 | 9 | 3 | 75% | 3.0 | 22.3% | 8.2% | 14.2% | 2.9% | 4.18 | 3.82 | — |
| 2026 | 26 | MIX RAW | 2 levels | 8 | 6 | 24 | 108 | 25 | 9 | 3 | 75% | 3.0 | 23.1% | 8.3% | 14.8% | 2.8% | 4.18 | 3.78 | — |
| ▸ 2027 season — projected remainder (no 2027 stats recorded) | |||||||||||||||||||
| 2027 | 27 | MLB | BOS | 1 | 1 | 2 | 8 | 2 | 1 | 0 | 100% | 2.0 | 20.9% | 10.8% | 10.1% | 3.3% | 4.90 | 4.90 | +0.0 |
| ▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%) | |||||||||||||||||||
| 2028 | 28 | MLB MLE | BOS | 3 | 3 | 20 | 84 | 18 | 9 | 3 | 100% | 6.7 | 21.0% | 10.8% | 10.2% | 3.4% | 4.89 | 4.92 | +0.1 |
| 2028 | 28 | MLB CTX | BOS | 2 | 2 | 9 | 38 | 8 | 4 | 1 | 100% | 4.5 | 21.0% | 10.8% | 10.2% | 3.4% | 4.89 | 4.92 | +0.0 |
| ▸ Career totals — MLB only (actual + projected) | |||||||||||||||||||
| Career | — | RAW | 1 | 1 | 9 | 36 | 8 | 4 | 1 | 100% | 8.5 | 21.0% | 10.8% | 10.2% | 3.4% | 4.89 | 4.54 | +0.1 | |
| / 200 IP | — | RAW | 33 | 33 | 200 | 844 | 188 | 94 | 24 | 100% | 6.0 | 21.0% | 10.8% | 10.2% | 3.4% | 4.89 | 4.54 | +2.0 | |
| Career | — | MLE | 74 | 61 | 304 | 1323 | 303 | 133 | 54 | 82% | 4.1 | 22.9% | 10.0% | 12.9% | 4.1% | 3.73 | 4.69 | +0.1 | |
| / 200 IP | — | MLE | 49 | 40 | 200 | 870 | 199 | 87 | 36 | 82% | 4.1 | 22.9% | 10.0% | 12.9% | 4.1% | 3.73 | 4.69 | +1.1 | |
How the minor-league lines were translated
One row per minor-league stint. Open a row to see each step: the raw rate, the park adjustment, the league/level factor, the age adjustment (hitters) and the resulting MLE rate. Factors are the same ones listed on the MLE Factors page.
2026 AAAWorcester Red Sox · 18 IPFIP 3.48 → 3.82 (+0.33)K% 26.0% → 22.3%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 25.97% | — | ×0.860 | 22.34% |
| BB% (unintentional) /BF | 9.09% | — | ×0.900 | 8.18% |
| HR / BF /BF | 2.60% | ÷1.000 | ×1.100 | 2.86% |
Factors used: pitcher AAA level factors (Triple-A 2023+ robo-zone set: walks improve on promotion) — K ×0.86, BB ×0.90, HR ×1.10. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 100).
Result: FIP 3.48 → 3.82, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).
2026 AAPortland Sea Dogs · 6 IPFIP 4.33 → 5.02 (+0.69)K% 16.1% → 13.1%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 16.13% | — | ×0.810 | 13.06% |
| BB% (unintentional) /BF | 6.45% | — | ×1.100 | 7.10% |
| HR / BF /BF | 3.23% | ÷1.000 | ×1.200 | 3.87% |
Factors used: pitcher AA level factors — K ×0.81, BB ×1.10, HR ×1.20. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 100).
Result: FIP 4.33 → 5.02, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).
2025 AAAWorcester Red Sox · 38 IPFIP 6.27 → 6.67 (+0.39)K% 19.5% → 16.7%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 19.46% | — | ×0.860 | 16.74% |
| BB% (unintentional) /BF | 14.59% | — | ×0.900 | 13.14% |
| HR / BF /BF | 5.41% | ÷0.984 | ×1.100 | 6.04% |
Factors used: pitcher AAA level factors (Triple-A 2023+ robo-zone set: walks improve on promotion) — K ×0.86, BB ×0.90, HR ×1.10. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 97).
Result: FIP 6.27 → 6.67, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).
2025 AAPortland Sea Dogs · 9 IPFIP 1.69 → 2.37 (+0.68)K% 33.3% → 27.0%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 33.33% | — | ×0.810 | 27.00% |
| BB% (unintentional) /BF | 11.11% | — | ×1.100 | 12.22% |
| HR / BF /BF | 0.00% | ÷1.119 | ×1.200 | 0.00% |
Factors used: pitcher AA level factors — K ×0.81, BB ×1.10, HR ×1.20. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 124).
Result: FIP 1.69 → 2.37, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).
2024 AAPortland Sea Dogs · 114 IPFIP 2.88 → 3.67 (+0.79)K% 30.0% → 24.3%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 29.96% | — | ×0.810 | 24.27% |
| BB% (unintentional) /BF | 10.32% | — | ×1.100 | 11.36% |
| HR / BF /BF | 1.82% | ÷1.018 | ×1.200 | 2.15% |
Factors used: pitcher AA level factors — K ×0.81, BB ×1.10, HR ×1.20. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 104).
Result: FIP 2.88 → 3.67, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).
2023 AAPortland Sea Dogs · 57 IPFIP 4.24 → 5.17 (+0.92)K% 28.7% → 23.2%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 28.69% | — | ×0.810 | 23.24% |
| BB% (unintentional) /BF | 9.16% | — | ×1.100 | 10.08% |
| HR / BF /BF | 4.38% | ÷1.048 | ×1.200 | 5.02% |
Factors used: pitcher AA level factors — K ×0.81, BB ×1.10, HR ×1.20. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 110).
Result: FIP 4.24 → 5.17, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).
2023 A+Greenville Drive · 60 IPFIP 3.22 → 4.83 (+1.61)K% 34.4% → 26.5%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 34.44% | — | ×0.770 | 26.52% |
| BB% (unintentional) /BF | 4.15% | — | ×1.150 | 4.77% |
| HR / BF /BF | 4.56% | ÷0.931 | ×1.250 | 6.13% |
Factors used: pitcher A+ level factors — K ×0.77, BB ×1.15, HR ×1.25. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 86).
Result: FIP 3.22 → 4.83, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).