John Klein
P Buffalo Bisons| Year | Age | Lvl / Team | G | GS | IP | ERA | FIP | K% | BB% | WAR | MLE rates |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | 22 | A+MIN | 22 | 20 | 100 | 4.57 | 3.61 | 20.4% | 8.6% | — | K 15.7% · BB 9.9% · FIP 4.20 |
| 2025 | 23 | MIX2 levels | 31 | 15 | 106 | 3.98 | 2.59 | 27.6% | 8.0% | — | K 22.7% · BB 8.2% · FIP 3.19 |
| 2026 | 24 | MIX2 levels | 36 | 19 | 95 | 5.99 | 5.22 | 23.4% | 13.1% | 0.2 | K 20.4% · BB 11.5% · FIP 5.39 |
| 2027PROJ | 25 | MLBTOR | 8 | 8 | 48 | 4.93 | 4.93 | 21.1% | 10.9% | 0.3 | |
| 2028PROJ80% MLB | 26 | MLBTOR | 11 | 11 | 68 | 4.85 | 4.84 | 21.4% | 10.6% | 0.4 | |
| 2029PROJ86% MLB | 27 | MLBTOR | 12 | 12 | 69 | 4.83 | 4.84 | 21.4% | 10.4% | 0.4 |
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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 | 20 | ROK MLE | FCL Twins | 2 | 0 | 2 | 9 | 2 | 1 | 0 | 0% | 1.0 | 22.2% | 11.1% | 11.1% | 0.0% | 0.00 | 2.63 | — |
| 2022 | 20 | ROK RAW | FCL Twins | 2 | 0 | 2 | 9 | 2 | 1 | 0 | 0% | 1.0 | 22.2% | 11.1% | 11.1% | 0.0% | 0.00 | 2.60 | — |
| 2023 | 21 | MIX MLE | 3 levels | 13 | 13 | 58 | 255 | 61 | 23 | 4 | 100% | 4.5 | 17.4% | 11.4% | 6.0% | 2.5% | 4.17 | 4.47 | — |
| 2023 | 21 | MIX RAW | 3 levels | 13 | 13 | 58 | 255 | 61 | 23 | 4 | 100% | 4.5 | 23.9% | 9.0% | 14.9% | 1.6% | 4.17 | 3.08 | — |
| 2024 | 22 | A+ MLE | Cedar Rapids Kernels | 22 | 20 | 100 | 441 | 90 | 38 | 9 | 91% | 4.6 | 15.7% | 9.9% | 5.8% | 2.1% | 4.57 | 4.20 | — |
| 2024 | 22 | A+ MLE | Cedar Rapids Kernels | 22 | 20 | 100 | 441 | 90 | 38 | 9 | 91% | 4.6 | 15.7% | 9.9% | 5.8% | 2.1% | 4.57 | 4.20 | — |
| 2024 | 22 | A+ RAW | Cedar Rapids Kernels | 22 | 20 | 100 | 441 | 90 | 38 | 9 | 91% | 4.6 | 20.4% | 8.6% | 11.8% | 2.0% | 4.57 | 3.61 | — |
| 2025 | 23 | MIX MLE | 2 levels | 31 | 15 | 106 | 464 | 128 | 37 | 7 | 48% | 3.4 | 22.7% | 8.2% | 14.5% | 1.8% | 3.98 | 3.19 | — |
| 2025 | 23 | MIX MLE | 2 levels | 31 | 15 | 106 | 464 | 128 | 37 | 7 | 48% | 3.4 | 22.7% | 8.2% | 14.5% | 1.8% | 3.98 | 3.19 | — |
| 2025 | 23 | MIX RAW | 2 levels | 31 | 15 | 106 | 464 | 128 | 37 | 7 | 48% | 3.4 | 27.6% | 8.0% | 19.6% | 1.5% | 3.98 | 2.59 | — |
| 2026 | 24 | MIX MLE | 2 levels | 36 | 19 | 95 | 435 | 102 | 57 | 18 | 53% | 2.6 | 20.4% | 11.5% | 8.9% | 4.7% | 5.99 | 5.39 | +0.0 |
| 2026 | 24 | MIX MLE | 2 levels | 36 | 19 | 95 | 435 | 102 | 57 | 18 | 53% | 2.6 | 20.4% | 11.5% | 8.9% | 4.7% | 5.99 | 5.39 | +0.0 |
| 2026 | 24 | MIX RAW | 2 levels | 36 | 19 | 95 | 435 | 102 | 57 | 18 | 53% | 2.6 | 23.4% | 13.1% | 10.3% | 4.1% | 5.99 | 5.22 | +0.2 |
| ▸ Career totals (raw MLB only — as recorded) | |||||||||||||||||||
| MLB Career | — | 4 | 0 | 8 | 35 | 7 | 6 | 1 | 0% | 2.1 | 20.0% | 17.1% | 2.9% | 2.9% | 2.16 | 5.14 | -0.1 | ||
| ▸ 2027 season — projected remainder (no 2027 stats recorded) | |||||||||||||||||||
| 2027 | 25 | MLB | TOR | 8 | 8 | 48 | 203 | 43 | 22 | 7 | 100% | 6.0 | 21.1% | 10.9% | 10.2% | 3.4% | 4.93 | 4.93 | +0.3 |
| ▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%) | |||||||||||||||||||
| 2028 | 26 | MLB MLE | TOR | 14 | 14 | 85 | 359 | 77 | 38 | 12 | 100% | 6.1 | 21.4% | 10.6% | 10.8% | 3.3% | 4.85 | 4.84 | +0.5 |
| 2029 | 27 | MLB MLE | TOR | 13 | 13 | 81 | 340 | 73 | 35 | 11 | 100% | 6.2 | 21.4% | 10.4% | 11.0% | 3.4% | 4.83 | 4.84 | +0.5 |
| 2030 | 28 | MLB MLE | TOR | 13 | 13 | 77 | 327 | 70 | 34 | 11 | 100% | 6.0 | 21.3% | 10.4% | 10.9% | 3.4% | 4.85 | 4.89 | +0.5 |
| 2031 | 29 | MLB MLE | TOR | 12 | 12 | 72 | 302 | 64 | 32 | 11 | 100% | 6.0 | 21.1% | 10.6% | 10.5% | 3.6% | 4.94 | 5.01 | +0.3 |
| 2032 | 30 | MLB MLE | TOR | 11 | 11 | 64 | 272 | 56 | 30 | 10 | 100% | 5.9 | 20.7% | 10.9% | 9.8% | 3.8% | 5.09 | 5.18 | +0.2 |
| 2028 | 26 | MLB CTX | TOR | 11 | 11 | 68 | 287 | 61 | 30 | 10 | 100% | 6.2 | 21.4% | 10.6% | 10.8% | 3.3% | 4.85 | 4.84 | +0.4 |
| 2029 | 27 | MLB CTX | TOR | 12 | 12 | 69 | 291 | 62 | 30 | 10 | 100% | 5.8 | 21.4% | 10.4% | 11.0% | 3.4% | 4.83 | 4.84 | +0.4 |
| 2030 | 28 | MLB CTX | TOR | 12 | 12 | 69 | 291 | 62 | 30 | 10 | 100% | 5.8 | 21.3% | 10.4% | 10.9% | 3.4% | 4.85 | 4.89 | +0.4 |
| 2031 | 29 | MLB CTX | TOR | 11 | 11 | 65 | 274 | 58 | 29 | 10 | 100% | 5.9 | 21.1% | 10.6% | 10.5% | 3.6% | 4.94 | 5.01 | +0.3 |
| 2032 | 30 | MLB CTX | TOR | 10 | 10 | 60 | 253 | 53 | 28 | 10 | 100% | 6.0 | 20.7% | 10.9% | 9.8% | 3.8% | 5.09 | 5.18 | +0.1 |
| ▸ Career totals — MLB only (actual + projected) | |||||||||||||||||||
| Career | — | RAW | 59 | 55 | 339 | 1433 | 303 | 154 | 50 | 93% | 5.8 | 21.2% | 10.7% | 10.4% | 3.5% | 4.84 | 4.58 | +3.2 | |
| / 200 IP | — | RAW | 35 | 33 | 200 | 844 | 179 | 91 | 29 | 93% | 5.7 | 21.2% | 10.7% | 10.4% | 3.5% | 4.84 | 4.58 | +1.9 | |
| Career | — | MLE | 104 | 67 | 362 | 1604 | 310 | 162 | 44 | 64% | 3.5 | 19.3% | 10.1% | 9.2% | 2.8% | 4.68 | 4.27 | +2.0 | |
| / 200 IP | — | MLE | 58 | 37 | 200 | 887 | 171 | 89 | 25 | 64% | 3.5 | 19.3% | 10.1% | 9.2% | 2.8% | 4.68 | 4.27 | +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 AAABuffalo Bisons · 86 IPFIP 5.04 → 5.39 (+0.35)K% 23.8% → 20.4%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 23.75% | — | ×0.860 | 20.42% |
| BB% (unintentional) /BF | 12.75% | — | ×0.900 | 11.47% |
| HR / BF /BF | 4.25% | ÷1.000 | ×1.100 | 4.68% |
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 5.04 → 5.39, 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 AAWichita Wind Surge · 81 IPFIP 2.61 → 3.35 (+0.73)K% 27.4% → 22.2%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 27.38% | — | ×0.810 | 22.18% |
| BB% (unintentional) /BF | 6.92% | — | ×1.100 | 7.61% |
| HR / BF /BF | 1.73% | ÷0.986 | ×1.200 | 2.10% |
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 97).
Result: FIP 2.61 → 3.35, 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 AAASt. Paul Saints · 26 IPFIP 2.59 → 2.73 (+0.14)K% 28.2% → 24.3%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 28.21% | — | ×0.860 | 24.26% |
| BB% (unintentional) /BF | 11.11% | — | ×0.900 | 10.00% |
| HR / BF /BF | 0.85% | ÷1.253 | ×1.100 | 0.75% |
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 151).
Result: FIP 2.59 → 2.73, 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 A+Cedar Rapids Kernels · 100 IPFIP 3.59 → 4.20 (+0.62)K% 20.4% → 15.7%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 20.41% | — | ×0.770 | 15.71% |
| BB% (unintentional) /BF | 8.62% | — | ×1.150 | 9.91% |
| HR / BF /BF | 2.04% | ÷1.191 | ×1.250 | 2.14% |
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 138).
Result: FIP 3.59 → 4.20, 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 AFort Myers Mighty Mussels · 30 IPFIP 2.82 → 3.76 (+0.93)K% 24.6% → 18.2%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 24.59% | — | ×0.740 | 18.20% |
| BB% (unintentional) /BF | 10.66% | — | ×1.180 | 12.57% |
| HR / BF /BF | 0.82% | ÷0.976 | ×1.300 | 1.09% |
Factors used: pitcher A level factors — K ×0.74, BB ×1.18, HR ×1.30. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 95).
Result: FIP 2.82 → 3.76, 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 ROKFCL Twins · 23 IPFIP 3.56 → 5.26 (+1.70)K% 24.3% → 16.5%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 24.32% | — | ×0.680 | 16.54% |
| BB% (unintentional) /BF | 8.11% | — | ×1.250 | 10.14% |
| HR / BF /BF | 2.70% | ÷0.913 | ×1.400 | 4.14% |
Factors used: pitcher ROK level factors — K ×0.68, BB ×1.25, HR ×1.40. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 83).
Result: FIP 3.56 → 5.26, 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+Cedar Rapids Kernels · 5 IPFIP 2.14 → 2.58 (+0.44)K% 18.2% → 14.0%
| Component | Raw | Park ÷ | Level factor × | = MLE |
|---|---|---|---|---|
| K% /BF | 18.18% | — | ×0.770 | 14.00% |
| BB% (unintentional) /BF | 4.55% | — | ×1.150 | 5.23% |
| HR / BF /BF | 0.00% | ÷1.134 | ×1.250 | 0.00% |
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 127).
Result: FIP 2.14 → 2.58, 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).
Career Comps
Completed MLB careers (no pro action in 2+ yrs) whose totals — actual + projected — most resemble this player's. Pool: 1,234 reliever careers (754 from 1990-2025 + 480 historical, 1901-2023), also matched on career-to-date at the same age. * Historical (Lahman) careers: rates era-adjusted to 2001-24 league levels; WAR is an OGILVIE proxy.
| Player | 162s | IP/yr | K% | BB% | HR/9 | ERA |
|---|---|---|---|---|---|---|
| OGILVIE CAREER PROJECTION | 2.3 | 76 | 21.2% | 10.7% | 1.34 | 4.86 |
| Phil Hennigan ('69-'73, -0 WAR*) | 1.4 | 70 | 20.9%* | 10.4%* | 1.50* | 4.95* |
| Bill Scherrer ('82-'88, 1 WAR*) | 1.6 | 62 | 20.7%* | 10.2%* | 1.19* | 4.44* |
| Jay Witasick ('07) | 3.7 | 73 | 19.6% | 11.0% | 1.19 | 4.64 |
| Josias Manzanillo ('04) | 1.7 | 57 | 20.0% | 10.2% | 1.21 | 4.71 |
| Rich DeLucia ('90-'99, 1 WAR*) | 3.1 | 78 | 23.2%* | 10.5%* | 1.55* | 4.65* |
| Josh Lindblom ('21) | 1.0 | 52 | 22.1% | 9.6% | 1.25 | 4.78 |