Jack Herman

PosOF
B/TR/R
Born1999-09-30
Age (2027)27
No MLB projection yet. Career stats below are historical.
Overview
ALAST SEASON 2024
YearAgeLvl / TeamPAAVG/OBP/SLGHRSBwRC+WARMLE AVG/OBP/SLG
202222A+PIT136.230/.304/.3203122—.165/.215/.220
202323ROKPIT16.071/.188/.14301-43—.067/.125/.133
202424APIT55.176/.236/.21603-33—.096/.145/.115
Contract
No contract data on file.
Skills · percentileMiLB Statcast 2024 A
Max EV72
Speed68
Z-Con%50
BB%23
Whiff%7
Chase%5

Career Stats + Projections

Real MLB stats plus park-adjusted projections — this season (so far / rest / full), then future seasons and career totals.
basis chips: RAW = as recorded · CTX = with park/league context · A+C = actual + context combined · MLE = level/park-neutral
Methodology▸ how these numbers are built

All seasons translated to park-neutral MLB-equivalent (MLE) and combined per year. 2027 = full-season projection (no games played yet). 2028+ via Advanced Marcel + aging curve.

YearAge LvlTeam MLB% PAAB H2B3BHR BBSOHBP SBCS AVGOBPSLGOPS ISOBABIP K%BB% wOBAwRC+ BATRUNFLDPOSREP WAR
▸ Career — actual stats, one row per stint (as recorded, no adjustments)
201818 ROKGCL Pirates — 169141 48932 23242 22 340440489929 149393 1414 407 93 — — — — — —
201919 AGreensboro Grasshoppers — 300265 6812213 28886 66 257341464805 208333 299 356 58 — — — — — —
202121 A+Greensboro Grasshoppers — 5452 6300 2260 11 115148173321 58231 484 147 -50 — — — — — —
202121 ABradenton Marauders — 243217 5511113 23701 21 253328493821 240309 299 357 51 — — — — — —
202121 ROKFCL Pirates Gold — 2925 9302 470 00 3604487201.168 360438 2414 497 116 — — — — — —
202222 A+Greensboro Grasshoppers — 136122 28203 12381 11 230304320623 90309 289 285 22 — — — — — —
202323 ROKFCL Pirates — 1614 1100 210 10 71188143330 7177 612 167 -43 — — — — — —
202424 ABradenton Marauders — 5551 9200 4260 30 176236216452 39360 477 213 -33 — — — — — —
▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents)
201818 ROK MLEGCL Pirates — 169150 40722 14342 22 267337380717 113314 208 306 93 — — — — — —
201919 A MLEGreensboro Grasshoppers — 300274 509210 191206 66 182251339590 157274 406 254 58 — — — — — —
202121 A+ MLEGreensboro Grasshoppers — 5453 4200 1340 11 7593113206 38214 632 94 -50 — — — — — —
202121 A MLEBradenton Marauders — 243227 42917 13961 21 185232326558 141271 405 243 51 — — — — — —
202121 ROK MLEFCL Pirates Gold — 2927 7202 2100 00 259310556866 296322 347 339 116 — — — — — —
202222 A+ MLEGreensboro Grasshoppers — 136127 21102 7501 11 165215220435 55260 375 200 22 — — — — — —
202323 ROK MLEFCL Pirates — 1615 1100 120 10 67125133258 6752 126 104 -43 — — — — — —
202424 A MLEBradenton Marauders — 5552 5100 3360 30 96145115261 19313 655 120 -33 — — — — — —
201818 ROK MLEGCL Pirates — 169150 40722 14342 22 267337380717 113328 208 306 93 — — — — — —
201818 ROK RAWGCL Pirates — 169141 48932 23242 22 340440489929 149393 1414 407 93 — — — — — —
201919 A MLEGreensboro Grasshoppers — 300274 509210 191206 66 182251339590 157276 406 254 58 — — — — — —
201919 A RAWGreensboro Grasshoppers — 300265 6812213 28886 66 257341464805 208333 299 356 58 — — — — — —
202121 A MLE3 teams — 326306 521219 171411 32 170216304520 134272 435 227 40 — — — — — —
202121 A RAW3 teams — 326294 7017115 291031 32 238309456764 218309 329 335 40 — — — — — —
202222 A+ MLEGreensboro Grasshoppers — 136127 21102 7501 11 165215220435 55253 375 200 22 — — — — — —
202222 A+ RAWGreensboro Grasshoppers — 136122 28203 12381 11 230304320623 90309 289 285 22 — — — — — —
202323 ROK MLEFCL Pirates — 1615 1100 120 10 67125133258 6777 126 104 -43 — — — — — —
202323 ROK RAWFCL Pirates — 1614 1100 210 10 71188143330 7177 612 167 -43 — — — — — —
202424 A MLEBradenton Marauders — 5552 5100 3360 30 96145115261 19312 655 120 -33 — — — — — —
202424 A RAWBradenton Marauders — 5551 9200 4260 30 176236216452 39360 477 213 -33 — — — — — —
201818 ROK MLEGCL Pirates — 169151 40722 14342 22 265337377715 113314 208 306 93 — — — — — —
201919 A MLEGreensboro Grasshoppers — 300272 509210 191206 66 184251342593 158274 406 254 58 — — — — — —
202121 A MLE3 teams — 326305 521219 171411 32 170216305521 134266 435 227 40 — — — — — —
202222 A+ MLEGreensboro Grasshoppers — 136127 21102 7501 11 165215220435 55260 375 200 22 — — — — — —
202323 ROK MLEFCL Pirates — 1615 1100 120 10 67125133258 6752 126 104 -43 — — — — — —
202424 A MLEBradenton Marauders — 5552 5100 3360 30 96145115261 19313 655 120 -33 — — — — — —
▸ Model inputs — neutral MLE (past 3 seasons)
202424 A MLEBradenton Marauders — 5552 5100 3360 30 96145115261 19313 655 120 -33 — — — — — —
▸ Career Totals
Career— MLE — 1002924 16931523 6138310 1611 183241302543 119279 386 237 46 -64 -1 +0 -6 +22 -5.0
/ 162G— MLE — 650599 10920315 402486 107 182240301540 119277 386 237 46 -41 -1 +0 -4 +14 -3.3

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.

2024 ABradenton Marauders · 55 PAwOBA .207 → .120 (−88)K% 47.3% → 65.9%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA47.27%÷0.975×1.360——65.93%
BB% (unintentional) /PA7.27%÷1.010×0.690—×0.9704.82%
HBP% /PA0.00%—×0.780—×0.9700.00%
Singles /BIP28.00%÷0.977×0.920—×0.97025.57%
Doubles /BIP8.00%÷1.124×0.830—×0.9705.73%
Triples /BIP0.00%÷1.052×0.910—×0.9700.00%
Home runs /BIP0.00%÷1.046×0.800—×0.9700.00%

Factors used: level-wide A factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 109, 1B 95, 2B 125, 3B 110, K 95, BB 102 — applied at half strength. Age: age 25 vs a level average of 22.0 → −3.0% on BB/HBP/hit rates (3.0 yr older than average).

Result: wOBA .207 → .120; ISO .039 → .018; BABIP .360 → .313. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).

2023 ROKFCL Pirates · 16 PAwOBA .164 → .104 (−60)K% 6.2% → 9.5%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA6.25%÷0.949×1.440——9.48%
BB% (unintentional) /PA12.50%÷1.002×0.620—×0.9557.39%
HBP% /PA0.00%—×0.720—×0.9550.00%
Singles /BIP0.00%÷0.984×0.820—×0.9550.00%
Doubles /BIP7.69%÷1.026×0.720—×0.9555.15%
Triples /BIP0.00%÷0.966×0.720—×0.9550.00%
Home runs /BIP0.00%÷0.925×0.780—×0.9550.00%

Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 85, 1B 97, 2B 105, 3B 93, K 90, BB 100 — applied at half strength. Age: age 24 vs a level average of 19.5 → −4.5% on BB/HBP/hit rates (4.5 yr older than average).

Result: wOBA .164 → .104; ISO .071 → .049; BABIP .077 → .052. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).

2022 A+Greensboro Grasshoppers · 136 PAwOBA .278 → .200 (−78)K% 27.9% → 36.7%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA27.94%÷0.999×1.310——36.65%
BB% (unintentional) /PA8.82%÷1.063×0.600—×0.9984.97%
HBP% /PA0.74%—×0.770—×0.9980.57%
Singles /BIP27.38%÷0.961×0.870×0.950×0.99823.49%
Doubles /BIP2.38%÷0.963×0.780×0.950×0.9981.83%
Triples /BIP0.00%÷1.150×0.850×0.950×0.9980.00%
Home runs /BIP3.57%÷1.273×0.880—×0.9982.46%

Factors used: league row South Atlantic League. Park (home-season share, regressed): HR 155, 1B 92, 2B 93, 3B 130, K 100, BB 113 — applied at half strength. Age: age 23 vs a level average of 22.8 → −0.2% on BB/HBP/hit rates (0.2 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.950.

Result: wOBA .278 → .200; ISO .090 → .059; BABIP .309 → .260. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).

2021 ABradenton Marauders · 243 PAwOBA .348 → .243 (−106)K% 28.8% → 39.6%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA28.81%÷0.989×1.360——39.60%
BB% (unintentional) /PA9.05%÷1.130×0.690——5.53%
HBP% /PA0.41%—×0.780——0.32%
Singles /BIP20.41%÷0.976×0.920×0.988—19.01%
Doubles /BIP7.48%÷0.943×0.830×0.988—6.51%
Triples /BIP0.68%÷1.150×0.910×0.988—0.53%
Home runs /BIP8.84%÷1.302×0.800——5.43%

Factors used: level-wide A factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 160, 1B 95, 2B 89, 3B 130, K 98, BB 126 — applied at half strength. Age: age 22 vs a level average of 22.0 → +0.0% on BB/HBP/hit rates (0.0 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.988.

Result: wOBA .348 → .243; ISO .240 → .146; BABIP .309 → .271. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).

2021 A+Greensboro Grasshoppers · 54 PAwOBA .144 → .094 (−50)K% 48.1% → 63.6%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA48.15%÷1.021×1.350——63.64%
BB% (unintentional) /PA3.70%÷1.085×0.710—×1.0122.45%
HBP% /PA0.00%—×0.810—×1.0120.00%
Singles /BIP11.54%÷0.981×0.910—×1.01210.83%
Doubles /BIP11.54%÷0.918×0.830—×1.01210.56%
Triples /BIP0.00%÷0.900×0.820—×1.0120.00%
Home runs /BIP0.00%÷1.238×0.830—×1.0120.00%

Factors used: level-wide A+ factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 148, 1B 96, 2B 84, 3B 80, K 104, BB 117 — applied at half strength. Age: age 22 vs a level average of 22.8 → +1.2% on BB/HBP/hit rates (0.8 yr younger than average).

Result: wOBA .144 → .094; ISO .058 → .037; BABIP .231 → .214. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).

2021 ROKFCL Pirates Gold · 29 PAwOBA .476 → .339 (−137)K% 24.1% → 34.3%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA24.14%÷1.014×1.440——34.30%
BB% (unintentional) /PA10.34%÷0.982×0.620—×0.9756.37%
HBP% /PA0.00%—×0.720—×0.9750.00%
Singles /BIP22.22%÷0.986×0.820—×0.97518.02%
Doubles /BIP16.67%÷1.039×0.720—×0.97511.26%
Triples /BIP0.00%÷1.132×0.720—×0.9750.00%
Home runs /BIP11.11%÷0.946×0.780—×0.9758.93%

Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 89, 1B 97, 2B 108, 3B 126, K 103, BB 96 — applied at half strength. Age: age 22 vs a level average of 19.5 → −2.5% on BB/HBP/hit rates (2.5 yr older than average).

Result: wOBA .476 → .339; ISO .360 → .262; BABIP .438 → .322. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).

2019 AGreensboro Grasshoppers · 300 PAwOBA .347 → .254 (−93)K% 29.3% → 40.0%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA29.33%÷0.983×1.340——39.97%
BB% (unintentional) /PA9.33%÷0.990×0.660—×1.0306.41%
HBP% /PA2.00%—×0.770—×1.0301.59%
Singles /BIP23.16%÷1.113×0.920×0.950×1.03018.74%
Doubles /BIP6.78%÷0.914×0.820×0.950×1.0305.95%
Triples /BIP1.13%÷0.900×0.940×0.950×1.0301.15%
Home runs /BIP7.34%÷1.009×0.820—×1.0306.15%

Factors used: league row SAL. Park (home-season share, regressed): HR 102, 1B 123, 2B 83, 3B 80, K 97, BB 98 — applied at half strength. Age: age 20 vs a level average of 22.0 → +3.0% on BB/HBP/hit rates (2.0 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.950.

Result: wOBA .347 → .254; ISO .208 → .157; BABIP .333 → .274. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).

2018 ROKGCL Pirates · 169 PAwOBA .400 → .306 (−94)K% 14.2% → 20.4%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA14.20%÷1.000×1.440——20.45%
BB% (unintentional) /PA13.02%÷1.000×0.620—×1.0088.13%
HBP% /PA1.18%—×0.720—×1.0080.86%
Singles /BIP29.06%÷1.000×0.820×1.003×1.00824.07%
Doubles /BIP7.69%÷1.000×0.720×1.003×1.0085.59%
Triples /BIP2.56%÷1.000×0.720×1.003×1.0081.86%
Home runs /BIP1.71%÷1.000×0.780—×1.0081.34%

Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): no park row on file (treated as neutral) — applied at half strength. Age: age 19 vs a level average of 19.5 → +0.8% on BB/HBP/hit rates (0.5 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.003.

Result: wOBA .400 → .306; ISO .149 → .113; BABIP .393 → .314. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).