Justin Maffei
| Year | Age | Lvl / Team | PA | AVG/OBP/SLG | HR | SB | wRC+ | WAR | MLE AVG/OBP/SLG |
|---|---|---|---|---|---|---|---|---|---|
| 2015 | 23 | A+PIT | 350 | .284/.378/.385 | 2 | 11 | 78 | — | .245/.320/.329 |
| 2016 | 24 | AA/A+PIT | 139 | .258/.324/.339 | 1 | 2 | 50 | — | .221/.273/.292 |
| 2017 | 25 | AAA/AAPIT | 147 | .277/.411/.311 | 0 | 5 | 85 | — | .254/.357/.286 |
Career Stats + Projections
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.
| Year | Age | Lvl | Team | MLB% | PA | AB | H | 2B | 3B | HR | BB | SO | HBP | SB | CS | AVG | OBP | SLG | OPS | ISO | BABIP | K% | BB% | wOBA | wRC+ | BAT | RUN | FLD | POS | REP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ▸ Career — actual stats, one row per stint (as recorded, no adjustments) | |||||||||||||||||||||||||||||||
| 2013 | 21 | ROK | GCL Pirates | — | 85 | 76 | 18 | 4 | 2 | 0 | 4 | 13 | 3 | 0 | 0 | 237 | 301 | 342 | 643 | 105 | 281 | 15 | 5 | 285 | 24 | — | — | — | — | — | — |
| 2014 | 22 | A+ | Bradenton Marauders | — | 174 | 155 | 47 | 8 | 3 | 1 | 16 | 35 | 2 | 8 | 3 | 303 | 376 | 413 | 789 | 110 | 387 | 20 | 9 | 353 | 80 | — | — | — | — | — | — |
| 2014 | 22 | A | West Virginia Power | — | 270 | 226 | 54 | 4 | 1 | 1 | 34 | 53 | 7 | 7 | 2 | 239 | 356 | 279 | 635 | 40 | 305 | 20 | 13 | 301 | 53 | — | — | — | — | — | — |
| 2015 | 23 | A+ | Bradenton Marauders | — | 350 | 299 | 85 | 14 | 5 | 2 | 38 | 53 | 7 | 11 | 7 | 284 | 378 | 385 | 763 | 100 | 339 | 15 | 11 | 342 | 78 | — | — | — | — | — | — |
| 2016 | 24 | AA | Altoona Curve | — | 71 | 63 | 11 | 1 | 0 | 0 | 6 | 13 | 1 | 1 | 0 | 175 | 257 | 190 | 448 | 16 | 220 | 18 | 8 | 215 | 5 | — | — | — | — | — | — |
| 2016 | 24 | A+ | Bradenton Marauders | — | 68 | 61 | 21 | 4 | 1 | 1 | 5 | 13 | 0 | 1 | 1 | 344 | 394 | 492 | 886 | 148 | 417 | 19 | 7 | 381 | 97 | — | — | — | — | — | — |
| 2017 | 25 | AAA | Indianapolis Indians | — | 37 | 30 | 10 | 1 | 0 | 0 | 5 | 8 | 1 | 1 | 1 | 333 | 444 | 367 | 811 | 33 | 455 | 22 | 14 | 369 | 116 | — | — | — | — | — | — |
| 2017 | 25 | AA | Altoona Curve | — | 110 | 89 | 23 | 3 | 0 | 0 | 16 | 16 | 5 | 4 | 1 | 258 | 400 | 292 | 692 | 34 | 315 | 15 | 15 | 334 | 74 | — | — | — | — | — | — |
| ▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents) | |||||||||||||||||||||||||||||||
| 2013 | 21 | ROK MLE | GCL Pirates | — | 85 | 78 | 13 | 3 | 1 | 0 | 2 | 19 | 3 | 0 | 0 | 167 | 217 | 231 | 448 | 64 | 217 | 22 | 2 | 204 | 24 | — | — | — | — | — | — |
| 2014 | 22 | A+ MLE | Bradenton Marauders | — | 174 | 160 | 42 | 7 | 3 | 1 | 11 | 51 | 2 | 8 | 3 | 263 | 318 | 362 | 680 | 100 | 368 | 29 | 6 | 287 | 80 | — | — | — | — | — | — |
| 2014 | 22 | A MLE | West Virginia Power | — | 270 | 238 | 51 | 3 | 1 | 1 | 22 | 68 | 7 | 7 | 2 | 214 | 300 | 248 | 548 | 34 | 282 | 25 | 8 | 246 | 53 | — | — | — | — | — | — |
| 2015 | 23 | A+ MLE | Bradenton Marauders | — | 350 | 310 | 76 | 12 | 4 | 2 | 27 | 73 | 7 | 11 | 7 | 245 | 320 | 329 | 649 | 84 | 304 | 21 | 8 | 283 | 78 | — | — | — | — | — | — |
| 2016 | 24 | AA MLE | Altoona Curve | — | 71 | 65 | 10 | 1 | 0 | 0 | 4 | 16 | 1 | 1 | 0 | 154 | 214 | 169 | 384 | 15 | 199 | 23 | 6 | 176 | 5 | — | — | — | — | — | — |
| 2016 | 24 | A+ MLE | Bradenton Marauders | — | 68 | 62 | 18 | 3 | 1 | 1 | 4 | 18 | 0 | 1 | 1 | 290 | 333 | 419 | 753 | 129 | 372 | 26 | 6 | 312 | 97 | — | — | — | — | — | — |
| 2017 | 25 | AAA MLE | Indianapolis Indians | — | 37 | 31 | 10 | 1 | 0 | 0 | 4 | 9 | 1 | 1 | 1 | 323 | 417 | 355 | 772 | 32 | 445 | 24 | 11 | 339 | 116 | — | — | — | — | — | — |
| 2017 | 25 | AA MLE | Altoona Curve | — | 110 | 95 | 22 | 3 | 0 | 0 | 10 | 20 | 5 | 4 | 1 | 232 | 336 | 263 | 600 | 32 | 287 | 18 | 9 | 277 | 74 | — | — | — | — | — | — |
| 2013 | 21 | ROK MLE | GCL Pirates | — | 85 | 78 | 13 | 3 | 1 | 0 | 2 | 19 | 3 | 0 | 0 | 167 | 217 | 231 | 448 | 64 | 217 | 22 | 2 | 204 | 24 | — | — | — | — | — | — |
| 2013 | 21 | ROK RAW | GCL Pirates | — | 85 | 76 | 18 | 4 | 2 | 0 | 4 | 13 | 3 | 0 | 0 | 237 | 301 | 342 | 643 | 105 | 281 | 15 | 5 | 285 | 24 | — | — | — | — | — | — |
| 2014 | 22 | A MLE | 2 teams | — | 444 | 398 | 90 | 10 | 3 | 1 | 33 | 119 | 9 | 15 | 5 | 226 | 300 | 274 | 574 | 48 | 318 | 27 | 7 | 262 | 64 | — | — | — | — | — | — |
| 2014 | 22 | A RAW | 2 teams | — | 444 | 381 | 101 | 12 | 4 | 2 | 50 | 88 | 9 | 15 | 5 | 265 | 364 | 333 | 697 | 68 | 338 | 20 | 11 | 321 | 64 | — | — | — | — | — | — |
| 2015 | 23 | A+ MLE | Bradenton Marauders | — | 350 | 310 | 76 | 12 | 4 | 2 | 27 | 73 | 7 | 11 | 7 | 245 | 320 | 329 | 649 | 84 | 314 | 21 | 8 | 283 | 78 | — | — | — | — | — | — |
| 2015 | 23 | A+ RAW | Bradenton Marauders | — | 350 | 299 | 85 | 14 | 5 | 2 | 38 | 53 | 7 | 11 | 7 | 284 | 378 | 385 | 763 | 100 | 339 | 15 | 11 | 342 | 78 | — | — | — | — | — | — |
| 2016 | 24 | AA MLE | 2 teams | — | 139 | 127 | 28 | 4 | 1 | 1 | 8 | 35 | 1 | 2 | 1 | 220 | 272 | 291 | 563 | 71 | 293 | 25 | 6 | 243 | 50 | — | — | — | — | — | — |
| 2016 | 24 | AA RAW | 2 teams | — | 139 | 124 | 32 | 5 | 1 | 1 | 11 | 26 | 1 | 2 | 1 | 258 | 324 | 339 | 662 | 81 | 316 | 19 | 8 | 296 | 50 | — | — | — | — | — | — |
| 2017 | 25 | AA MLE | 2 teams | — | 147 | 126 | 32 | 4 | 0 | 0 | 14 | 29 | 6 | 5 | 2 | 254 | 356 | 286 | 642 | 32 | 330 | 20 | 10 | 293 | 84 | — | — | — | — | — | — |
| 2017 | 25 | AA RAW | 2 teams | — | 147 | 119 | 33 | 4 | 0 | 0 | 21 | 24 | 6 | 5 | 2 | 277 | 411 | 311 | 722 | 34 | 347 | 16 | 14 | 343 | 84 | — | — | — | — | — | — |
| 2013 | 21 | ROK MLE | GCL Pirates | — | 85 | 80 | 13 | 3 | 1 | 0 | 2 | 19 | 3 | 0 | 0 | 163 | 217 | 225 | 442 | 62 | 217 | 22 | 2 | 204 | 24 | — | — | — | — | — | — |
| 2014 | 22 | A MLE | 2 teams | — | 444 | 399 | 90 | 10 | 3 | 1 | 33 | 119 | 9 | 15 | 5 | 226 | 300 | 273 | 573 | 48 | 316 | 27 | 7 | 262 | 64 | — | — | — | — | — | — |
| 2015 | 23 | A+ MLE | Bradenton Marauders | — | 350 | 313 | 76 | 12 | 4 | 2 | 27 | 73 | 7 | 11 | 7 | 243 | 320 | 326 | 646 | 83 | 304 | 21 | 8 | 283 | 78 | — | — | — | — | — | — |
| 2016 | 24 | AA MLE | 2 teams | — | 139 | 129 | 28 | 4 | 1 | 1 | 8 | 35 | 1 | 2 | 1 | 217 | 272 | 287 | 559 | 70 | 284 | 25 | 6 | 243 | 50 | — | — | — | — | — | — |
| 2017 | 25 | AA MLE | 2 teams | — | 147 | 126 | 32 | 4 | 0 | 0 | 14 | 29 | 6 | 5 | 2 | 254 | 356 | 286 | 642 | 32 | 327 | 20 | 10 | 293 | 84 | — | — | — | — | — | — |
| ▸ Career Totals | |||||||||||||||||||||||||||||||
| Career | — | MLE | — | 1165 | 1039 | 239 | 33 | 9 | 4 | 84 | 275 | 26 | 33 | 15 | 230 | 304 | 291 | 594 | 61 | 307 | 24 | 7 | 266 | 66 | -47 | +1 | +0 | -12 | +25 | -3.5 | |
| / 162G | — | MLE | — | 650 | 580 | 133 | 18 | 5 | 2 | 47 | 153 | 15 | 18 | 8 | 229 | 304 | 288 | 592 | 59 | 306 | 24 | 7 | 266 | 66 | -26 | +0 | +0 | -7 | +14 | -1.9 | |
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.
2017 AAAltoona Curve · 110 PAwOBA .324 → .277 (−46)K% 14.5% → 18.2%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 14.55% | ÷0.974 | ×1.220 | — | — | 18.22% |
| BB% (unintentional) /PA | 13.64% | ÷1.008 | ×0.700 | — | ×0.988 | 9.35% |
| HBP% /PA | 4.55% | — | ×0.850 | — | ×0.988 | 3.82% |
| Singles /BIP | 27.40% | ÷1.060 | ×0.970 | ×1.002 | ×0.988 | 24.81% |
| Doubles /BIP | 4.11% | ÷0.909 | ×0.860 | ×1.002 | ×0.988 | 3.85% |
| Triples /BIP | 0.00% | ÷1.150 | ×0.950 | ×1.002 | ×0.988 | 0.00% |
| Home runs /BIP | 0.00% | ÷1.035 | ×0.780 | — | ×0.988 | 0.00% |
Factors used: league row EL. Park (home-season share, regressed): HR 107, 1B 112, 2B 82, 3B 130, K 95, BB 102 — applied at half strength. Age: age 26 vs a level average of 24.8 → −1.2% on BB/HBP/hit rates (1.2 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.002.
Result: wOBA .324 → .277; ISO .034 → .033; BABIP .315 → .287. 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).
2017 AAAIndianapolis Indians · 37 PAwOBA .360 → .339 (−21)K% 21.6% → 25.2%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 21.62% | ÷1.030 | ×1.200 | — | — | 25.19% |
| BB% (unintentional) /PA | 13.51% | ÷0.952 | ×0.690 | — | ×1.018 | 9.97% |
| HBP% /PA | 2.70% | — | ×0.940 | — | ×1.018 | 2.59% |
| Singles /BIP | 40.91% | ÷0.950 | ×0.930 | — | ×1.018 | 40.79% |
| Doubles /BIP | 4.55% | ÷1.046 | ×0.830 | — | ×1.018 | 3.67% |
| Triples /BIP | 0.00% | ÷1.150 | ×0.970 | — | ×1.018 | 0.00% |
| Home runs /BIP | 0.00% | ÷0.850 | ×0.840 | — | ×1.018 | 0.00% |
Factors used: league row IL. Park (home-season share, regressed): HR 70, 1B 90, 2B 109, 3B 130, K 106, BB 90 — applied at half strength. Age: age 26 vs a level average of 27.2 → +1.8% on BB/HBP/hit rates (1.2 yr younger than average).
Result: wOBA .360 → .339; ISO .033 → .028; BABIP .455 → .445. 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).
2016 AAAltoona Curve · 71 PAwOBA .210 → .176 (−34)K% 18.3% → 22.9%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 18.31% | ÷0.975 | ×1.220 | — | — | 22.91% |
| BB% (unintentional) /PA | 8.45% | ÷0.988 | ×0.700 | — | ×0.998 | 5.97% |
| HBP% /PA | 1.41% | — | ×0.850 | — | ×0.998 | 1.19% |
| Singles /BIP | 20.00% | ÷1.050 | ×0.970 | ×0.991 | ×0.998 | 18.27% |
| Doubles /BIP | 2.00% | ÷1.059 | ×0.860 | ×0.991 | ×0.998 | 1.61% |
| Triples /BIP | 0.00% | ÷1.150 | ×0.950 | ×0.991 | ×0.998 | 0.00% |
| Home runs /BIP | 0.00% | ÷1.016 | ×0.780 | — | ×0.998 | 0.00% |
Factors used: league row EL. Park (home-season share, regressed): HR 103, 1B 110, 2B 112, 3B 130, K 95, BB 98 — applied at half strength. Age: age 25 vs a level average of 24.8 → −0.2% on BB/HBP/hit rates (0.2 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.991.
Result: wOBA .210 → .176; ISO .016 → .013; BABIP .220 → .199. 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).
2016 A+Bradenton Marauders · 68 PAwOBA .376 → .312 (−64)K% 19.1% → 27.2%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 19.12% | ÷0.996 | ×1.420 | — | — | 27.25% |
| BB% (unintentional) /PA | 7.35% | ÷1.009 | ×0.750 | — | ×0.978 | 5.35% |
| HBP% /PA | 0.00% | — | ×0.930 | — | ×0.978 | 0.00% |
| Singles /BIP | 31.25% | ÷0.999 | ×0.920 | — | ×0.978 | 28.14% |
| Doubles /BIP | 8.33% | ÷1.059 | ×0.960 | — | ×0.978 | 7.39% |
| Triples /BIP | 2.08% | ÷0.900 | ×0.810 | — | ×0.978 | 1.83% |
| Home runs /BIP | 2.08% | ÷1.098 | ×0.880 | — | ×0.978 | 1.63% |
Factors used: league row FSL. Park (home-season share, regressed): HR 120, 1B 100, 2B 112, 3B 80, K 99, BB 102 — applied at half strength. Age: age 25 vs a level average of 22.8 → −2.2% on BB/HBP/hit rates (2.2 yr older than average).
Result: wOBA .376 → .312; ISO .148 → .120; BABIP .417 → .372. 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).
2015 A+Bradenton Marauders · 350 PAwOBA .335 → .283 (−52)K% 15.1% → 20.9%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 15.14% | ÷1.027 | ×1.420 | — | — | 20.95% |
| BB% (unintentional) /PA | 10.86% | ÷1.051 | ×0.750 | — | ×0.988 | 7.66% |
| HBP% /PA | 2.00% | — | ×0.930 | — | ×0.988 | 1.84% |
| Singles /BIP | 26.02% | ÷0.981 | ×0.920 | ×0.987 | ×0.988 | 23.78% |
| Doubles /BIP | 5.69% | ÷1.117 | ×0.960 | ×0.987 | ×0.988 | 4.77% |
| Triples /BIP | 2.03% | ÷0.900 | ×0.810 | ×0.987 | ×0.988 | 1.78% |
| Home runs /BIP | 0.81% | ÷0.974 | ×0.880 | — | ×0.988 | 0.73% |
Factors used: league row FSL. Park (home-season share, regressed): HR 95, 1B 96, 2B 123, 3B 80, K 105, BB 110 — applied at half strength. Age: age 24 vs a level average of 22.8 → −1.2% on BB/HBP/hit rates (1.2 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.987.
Result: wOBA .335 → .283; ISO .100 → .086; BABIP .339 → .304. 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).
2014 AWest Virginia Power · 270 PAwOBA .296 → .246 (−50)K% 19.6% → 25.1%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 19.63% | ÷1.047 | ×1.340 | — | — | 25.12% |
| BB% (unintentional) /PA | 12.59% | ÷1.032 | ×0.660 | — | ×0.990 | 7.97% |
| HBP% /PA | 2.59% | — | ×0.770 | — | ×0.990 | 1.98% |
| Singles /BIP | 27.75% | ÷1.002 | ×0.920 | ×1.032 | ×0.990 | 26.04% |
| Doubles /BIP | 2.31% | ÷1.057 | ×0.820 | ×1.032 | ×0.990 | 1.83% |
| Triples /BIP | 0.58% | ÷1.150 | ×0.940 | ×1.032 | ×0.990 | 0.48% |
| Home runs /BIP | 0.58% | ÷0.935 | ×0.820 | — | ×0.990 | 0.50% |
Factors used: league row SAL. Park (home-season share, regressed): HR 87, 1B 100, 2B 111, 3B 130, K 109, BB 106 — applied at half strength. Age: age 23 vs a level average of 22.0 → −1.0% on BB/HBP/hit rates (1.0 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.032.
Result: wOBA .296 → .246; ISO .040 → .033; BABIP .305 → .282. 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).
2014 A+Bradenton Marauders · 174 PAwOBA .345 → .287 (−57)K% 20.1% → 29.3%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 20.11% | ÷0.975 | ×1.420 | — | — | 29.28% |
| BB% (unintentional) /PA | 9.20% | ÷1.059 | ×0.750 | — | ×0.998 | 6.50% |
| HBP% /PA | 1.15% | — | ×0.930 | — | ×0.998 | 1.07% |
| Singles /BIP | 29.17% | ÷1.004 | ×0.920 | ×1.050 | ×0.998 | 28.00% |
| Doubles /BIP | 6.67% | ÷1.078 | ×0.960 | ×1.050 | ×0.998 | 6.22% |
| Triples /BIP | 2.50% | ÷0.900 | ×0.810 | ×1.050 | ×0.998 | 2.36% |
| Home runs /BIP | 0.83% | ÷1.337 | ×0.880 | — | ×0.998 | 0.55% |
Factors used: league row FSL. Park (home-season share, regressed): HR 167, 1B 101, 2B 116, 3B 80, K 95, BB 112 — 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 ×1.050.
Result: wOBA .345 → .287; ISO .110 → .089; BABIP .387 → .368. 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).
2013 ROKGCL Pirates · 85 PAwOBA .281 → .204 (−77)K% 15.3% → 22.0%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 15.29% | ÷1.000 | ×1.440 | — | — | 22.02% |
| BB% (unintentional) /PA | 4.71% | ÷1.000 | ×0.620 | — | ×0.975 | 2.84% |
| HBP% /PA | 3.53% | — | ×0.720 | — | ×0.975 | 2.48% |
| Singles /BIP | 19.05% | ÷1.000 | ×0.820 | ×1.004 | ×0.975 | 15.30% |
| Doubles /BIP | 6.35% | ÷1.000 | ×0.720 | ×1.004 | ×0.975 | 4.48% |
| Triples /BIP | 3.17% | ÷1.000 | ×0.720 | ×1.004 | ×0.975 | 2.24% |
| Home runs /BIP | 0.00% | ÷1.000 | ×0.780 | — | ×0.975 | 0.00% |
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 22 vs a level average of 19.5 → −2.5% on BB/HBP/hit rates (2.5 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.004.
Result: wOBA .281 → .204; ISO .105 → .073; BABIP .281 → .217. 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).