Zach Borenstein
| Year | Age | Lvl / Team | PA | AVG/OBP/SLG | HR | SB | wRC+ | WAR | MLE AVG/OBP/SLG |
|---|---|---|---|---|---|---|---|---|---|
| 2018 | 28 | AAALas Vegas 51s | 572 | .248/.359/.477 | 25 | 3 | 74 | — | .196/.276/.362 |
| 2019 | 29 | AAACHC | 43 | .244/.279/.317 | 1 | 0 | 12 | — | .190/.209/.262 |
| 2020 | 30 | INTLMayos de Navo… | 40 | .132/.175/.158 | 0 | 1 | -7 | — |
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) | |||||||||||||||||||||||||||||||
| 2011 | 21 | ROK | AZL Angels | — | 136 | 113 | 31 | 6 | 4 | 2 | 17 | 21 | 6 | 12 | 1 | 274 | 397 | 451 | 848 | 177 | 322 | 15 | 12 | 381 | 68 | — | — | — | — | — | — |
| 2012 | 22 | A | Cedar Rapids Kernels | — | 327 | 293 | 78 | 25 | 3 | 11 | 27 | 60 | 6 | 13 | 5 | 266 | 340 | 485 | 825 | 218 | 300 | 18 | 8 | 362 | 70 | — | — | — | — | — | — |
| 2013 | 23 | A+ | Inland Empire 66ers | — | 465 | 407 | 137 | 22 | 7 | 28 | 43 | 88 | 7 | 5 | 5 | 337 | 409 | 631 | 1.041 | 295 | 366 | 19 | 9 | 442 | 149 | — | — | — | — | — | — |
| 2013 | 23 | INTL | Mesa Solar Sox | — | 56 | 44 | 6 | 1 | 0 | 1 | 11 | 9 | 1 | 0 | 3 | 136 | 321 | 227 | 549 | 91 | 147 | 16 | 20 | 275 | 72 | — | — | — | — | — | — |
| 2014 | 24 | AAA | Reno Aces | — | 204 | 190 | 49 | 8 | 1 | 7 | 10 | 55 | 1 | 0 | 3 | 258 | 299 | 421 | 720 | 163 | 323 | 27 | 5 | 314 | 48 | — | — | — | — | — | — |
| 2014 | 24 | AA | Mobile BayBears | — | 309 | 271 | 70 | 17 | 4 | 8 | 33 | 70 | 1 | 9 | 4 | 258 | 341 | 439 | 780 | 181 | 315 | 23 | 11 | 342 | 86 | — | — | — | — | — | — |
| 2015 | 25 | AAA | Reno Aces | — | 53 | 52 | 8 | 2 | 0 | 0 | 1 | 14 | 0 | 0 | 0 | 154 | 170 | 192 | 362 | 38 | 211 | 26 | 2 | 164 | -24 | — | — | — | — | — | — |
| 2015 | 25 | AA | Mobile BayBears | — | 327 | 280 | 88 | 15 | 5 | 10 | 38 | 55 | 3 | 6 | 4 | 314 | 402 | 511 | 913 | 196 | 353 | 17 | 12 | 396 | 114 | — | — | — | — | — | — |
| 2015 | 25 | INTL | Aguilas Cibaenas | — | 86 | 78 | 21 | 2 | 0 | 2 | 8 | 24 | 0 | 1 | 0 | 269 | 337 | 372 | 709 | 103 | 365 | 28 | 9 | 322 | 104 | — | — | — | — | — | — |
| 2016 | 26 | AAA | Reno Aces | — | 395 | 357 | 97 | 23 | 5 | 9 | 34 | 116 | 2 | 15 | 1 | 272 | 338 | 440 | 778 | 168 | 376 | 29 | 9 | 344 | 56 | — | — | — | — | — | — |
| 2017 | 27 | AAA | Reno Aces | — | 433 | 384 | 107 | 27 | 7 | 24 | 45 | 126 | 0 | 2 | 1 | 279 | 354 | 573 | 927 | 294 | 349 | 29 | 10 | 396 | 74 | — | — | — | — | — | — |
| 2018 | 28 | AAA | Las Vegas 51s | — | 572 | 484 | 120 | 32 | 2 | 25 | 81 | 182 | 3 | 3 | 4 | 248 | 359 | 477 | 836 | 229 | 338 | 32 | 14 | 368 | 74 | — | — | — | — | — | — |
| 2019 | 29 | AAA | Iowa Cubs | — | 43 | 41 | 10 | 0 | 0 | 1 | 2 | 18 | 0 | 0 | 0 | 244 | 279 | 317 | 596 | 73 | 409 | 42 | 5 | 270 | 12 | — | — | — | — | — | — |
| 2020 | 30 | INTL | Mayos de Navojoa | — | 40 | 38 | 5 | 1 | 0 | 0 | 2 | 20 | 0 | 1 | 0 | 132 | 175 | 158 | 333 | 26 | 278 | 50 | 5 | 157 | -7 | — | — | — | — | — | — |
| ▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents) | |||||||||||||||||||||||||||||||
| 2011 | 21 | ROK MLE | AZL Angels | — | 136 | 120 | 24 | 4 | 3 | 2 | 10 | 30 | 6 | 12 | 1 | 200 | 294 | 333 | 627 | 133 | 250 | 22 | 7 | 268 | 68 | — | — | — | — | — | — |
| 2012 | 22 | A MLE | Cedar Rapids Kernels | — | 327 | 303 | 63 | 19 | 2 | 7 | 17 | 87 | 6 | 13 | 5 | 208 | 264 | 353 | 617 | 145 | 266 | 27 | 5 | 272 | 70 | — | — | — | — | — | — |
| 2013 | 23 | A+ MLE | Inland Empire 66ers | — | 465 | 421 | 125 | 20 | 5 | 29 | 29 | 121 | 7 | 5 | 5 | 297 | 352 | 575 | 927 | 278 | 333 | 26 | 6 | 388 | 149 | — | — | — | — | — | — |
| 2014 | 24 | AAA MLE | Reno Aces | — | 204 | 193 | 40 | 6 | 1 | 5 | 7 | 73 | 1 | 0 | 3 | 207 | 239 | 326 | 565 | 119 | 291 | 36 | 3 | 239 | 48 | — | — | — | — | — | — |
| 2014 | 24 | AA MLE | Mobile BayBears | — | 309 | 283 | 67 | 17 | 4 | 7 | 21 | 86 | 1 | 9 | 4 | 237 | 292 | 399 | 691 | 163 | 297 | 28 | 7 | 296 | 86 | — | — | — | — | — | — |
| 2015 | 25 | AAA MLE | Reno Aces | — | 53 | 52 | 6 | 1 | 0 | 0 | 1 | 19 | 0 | 0 | 0 | 115 | 132 | 135 | 267 | 19 | 203 | 36 | 2 | 133 | -24 | — | — | — | — | — | — |
| 2015 | 25 | AA MLE | Mobile BayBears | — | 327 | 293 | 82 | 15 | 5 | 7 | 25 | 69 | 3 | 6 | 4 | 280 | 343 | 437 | 780 | 157 | 323 | 21 | 8 | 336 | 114 | — | — | — | — | — | — |
| 2016 | 26 | AAA MLE | Reno Aces | — | 395 | 369 | 75 | 17 | 3 | 6 | 22 | 151 | 2 | 15 | 1 | 203 | 252 | 314 | 566 | 111 | 318 | 38 | 6 | 251 | 56 | — | — | — | — | — | — |
| 2017 | 27 | AAA MLE | Reno Aces | — | 433 | 398 | 80 | 18 | 5 | 16 | 31 | 177 | 0 | 2 | 1 | 201 | 259 | 392 | 651 | 191 | 299 | 41 | 7 | 278 | 74 | — | — | — | — | — | — |
| 2018 | 28 | AAA MLE | Las Vegas 51s | — | 572 | 511 | 100 | 27 | 2 | 18 | 54 | 238 | 3 | 3 | 4 | 196 | 276 | 362 | 638 | 166 | 308 | 42 | 9 | 277 | 74 | — | — | — | — | — | — |
| 2019 | 29 | AAA MLE | Iowa Cubs | — | 43 | 42 | 8 | 0 | 0 | 1 | 1 | 23 | 0 | 0 | 0 | 190 | 209 | 262 | 471 | 71 | 360 | 53 | 2 | 186 | 12 | — | — | — | — | — | — |
| 2011 | 21 | ROK MLE | AZL Angels | — | 136 | 120 | 24 | 4 | 3 | 2 | 10 | 30 | 6 | 12 | 1 | 200 | 294 | 333 | 627 | 133 | 250 | 22 | 7 | 268 | 68 | — | — | — | — | — | — |
| 2011 | 21 | ROK RAW | AZL Angels | — | 136 | 113 | 31 | 6 | 4 | 2 | 17 | 21 | 6 | 12 | 1 | 274 | 397 | 451 | 848 | 177 | 322 | 15 | 12 | 381 | 68 | — | — | — | — | — | — |
| 2012 | 22 | A MLE | Cedar Rapids Kernels | — | 327 | 303 | 63 | 19 | 2 | 7 | 17 | 87 | 6 | 13 | 5 | 208 | 264 | 353 | 617 | 145 | 267 | 27 | 5 | 272 | 70 | — | — | — | — | — | — |
| 2012 | 22 | A RAW | Cedar Rapids Kernels | — | 327 | 293 | 78 | 25 | 3 | 11 | 27 | 60 | 6 | 13 | 5 | 266 | 340 | 485 | 825 | 218 | 300 | 18 | 8 | 362 | 70 | — | — | — | — | — | — |
| 2013 | 23 | A+ MLE | 2 teams | — | 521 | 473 | 139 | 22 | 5 | 33 | 32 | 136 | 8 | 5 | 8 | 294 | 349 | 571 | 920 | 277 | 341 | 26 | 6 | 388 | 149 | — | — | — | — | — | — |
| 2013 | 23 | A+ RAW | 2 teams | — | 521 | 451 | 143 | 23 | 7 | 29 | 54 | 97 | 8 | 5 | 8 | 317 | 400 | 592 | 992 | 275 | 343 | 19 | 10 | 424 | 149 | — | — | — | — | — | — |
| 2014 | 24 | AA MLE | 2 teams | — | 513 | 476 | 106 | 23 | 4 | 12 | 28 | 159 | 2 | 9 | 7 | 223 | 269 | 363 | 632 | 141 | 302 | 31 | 5 | 273 | 71 | — | — | — | — | — | — |
| 2014 | 24 | AA RAW | 2 teams | — | 513 | 461 | 119 | 25 | 5 | 15 | 43 | 125 | 2 | 9 | 7 | 258 | 324 | 432 | 756 | 174 | 318 | 24 | 8 | 331 | 71 | — | — | — | — | — | — |
| 2015 | 25 | AA MLE | 3 teams | — | 466 | 426 | 109 | 20 | 6 | 9 | 31 | 107 | 3 | 7 | 4 | 256 | 311 | 394 | 705 | 138 | 316 | 23 | 7 | 308 | 94 | — | — | — | — | — | — |
| 2015 | 25 | AA RAW | 3 teams | — | 466 | 410 | 117 | 19 | 5 | 12 | 47 | 93 | 3 | 7 | 4 | 285 | 363 | 444 | 807 | 159 | 338 | 20 | 10 | 356 | 94 | — | — | — | — | — | — |
| 2016 | 26 | AAA MLE | Reno Aces | — | 395 | 369 | 75 | 17 | 3 | 6 | 22 | 151 | 2 | 15 | 1 | 203 | 252 | 314 | 566 | 111 | 322 | 38 | 6 | 251 | 56 | — | — | — | — | — | — |
| 2016 | 26 | AAA RAW | Reno Aces | — | 395 | 357 | 97 | 23 | 5 | 9 | 34 | 116 | 2 | 15 | 1 | 272 | 338 | 440 | 778 | 168 | 376 | 29 | 9 | 344 | 56 | — | — | — | — | — | — |
| 2017 | 27 | AAA MLE | Reno Aces | — | 433 | 398 | 80 | 18 | 5 | 16 | 31 | 177 | 0 | 2 | 1 | 201 | 259 | 392 | 651 | 191 | 306 | 41 | 7 | 278 | 74 | — | — | — | — | — | — |
| 2017 | 27 | AAA RAW | Reno Aces | — | 433 | 384 | 107 | 27 | 7 | 24 | 45 | 126 | 0 | 2 | 1 | 279 | 354 | 573 | 927 | 294 | 349 | 29 | 10 | 396 | 74 | — | — | — | — | — | — |
| 2018 | 28 | AAA MLE | Las Vegas 51s | — | 572 | 511 | 100 | 27 | 2 | 18 | 54 | 238 | 3 | 3 | 4 | 196 | 276 | 362 | 638 | 166 | 317 | 42 | 9 | 277 | 74 | — | — | — | — | — | — |
| 2018 | 28 | AAA RAW | Las Vegas 51s | — | 572 | 484 | 120 | 32 | 2 | 25 | 81 | 182 | 3 | 3 | 4 | 248 | 359 | 477 | 836 | 229 | 338 | 32 | 14 | 368 | 74 | — | — | — | — | — | — |
| 2019 | 29 | AAA MLE | Iowa Cubs | — | 43 | 42 | 8 | 0 | 0 | 1 | 1 | 23 | 0 | 0 | 0 | 190 | 209 | 262 | 471 | 71 | 389 | 53 | 2 | 186 | 12 | — | — | — | — | — | — |
| 2019 | 29 | AAA RAW | Iowa Cubs | — | 43 | 41 | 10 | 0 | 0 | 1 | 2 | 18 | 0 | 0 | 0 | 244 | 279 | 317 | 596 | 73 | 409 | 42 | 5 | 270 | 12 | — | — | — | — | — | — |
| 2020 | 30 | INTL MLE | Mayos de Navojoa | — | 40 | 38 | 5 | 1 | 0 | 0 | 2 | 20 | 0 | 1 | 0 | 132 | 175 | 158 | 333 | 26 | 278 | 50 | 5 | — | — | — | — | — | — | — | — |
| 2020 | 30 | INTL RAW | Mayos de Navojoa | — | 40 | 38 | 5 | 1 | 0 | 0 | 2 | 20 | 0 | 1 | 0 | 132 | 175 | 158 | 333 | 26 | 278 | 50 | 5 | 157 | -7 | — | — | — | — | — | — |
| 2011 | 21 | ROK MLE | AZL Angels | — | 136 | 119 | 24 | 4 | 3 | 2 | 10 | 30 | 6 | 12 | 1 | 202 | 294 | 336 | 630 | 134 | 250 | 22 | 7 | 268 | 68 | — | — | — | — | — | — |
| 2012 | 22 | A MLE | Cedar Rapids Kernels | — | 327 | 301 | 63 | 19 | 2 | 7 | 17 | 87 | 6 | 13 | 5 | 209 | 264 | 355 | 619 | 146 | 266 | 27 | 5 | 272 | 70 | — | — | — | — | — | — |
| 2013 | 23 | A+ MLE | 2 teams | — | 521 | 476 | 139 | 22 | 5 | 33 | 32 | 136 | 8 | 5 | 8 | 292 | 349 | 567 | 916 | 275 | 333 | 26 | 6 | 388 | 149 | — | — | — | — | — | — |
| 2014 | 24 | AA MLE | 2 teams | — | 513 | 478 | 106 | 23 | 4 | 12 | 28 | 159 | 2 | 9 | 7 | 222 | 269 | 362 | 631 | 140 | 295 | 31 | 5 | 273 | 71 | — | — | — | — | — | — |
| 2015 | 25 | AA MLE | 3 teams | — | 466 | 429 | 109 | 20 | 6 | 9 | 31 | 107 | 3 | 7 | 4 | 254 | 311 | 392 | 702 | 138 | 306 | 23 | 7 | 308 | 94 | — | — | — | — | — | — |
| 2016 | 26 | AAA MLE | Reno Aces | — | 395 | 368 | 75 | 17 | 3 | 6 | 22 | 151 | 2 | 15 | 1 | 204 | 252 | 315 | 567 | 111 | 318 | 38 | 6 | 251 | 56 | — | — | — | — | — | — |
| 2017 | 27 | AAA MLE | Reno Aces | — | 433 | 399 | 80 | 18 | 5 | 16 | 31 | 177 | 0 | 2 | 1 | 201 | 259 | 391 | 650 | 190 | 299 | 41 | 7 | 278 | 74 | — | — | — | — | — | — |
| 2018 | 28 | AAA MLE | Las Vegas 51s | — | 572 | 510 | 100 | 27 | 2 | 18 | 54 | 238 | 3 | 3 | 4 | 196 | 276 | 363 | 639 | 167 | 308 | 42 | 9 | 277 | 74 | — | — | — | — | — | — |
| 2019 | 29 | AAA MLE | Iowa Cubs | — | 43 | 42 | 8 | 0 | 0 | 1 | 1 | 23 | 0 | 0 | 0 | 190 | 209 | 262 | 471 | 71 | 360 | 53 | 2 | 186 | 12 | — | — | — | — | — | — |
| ▸ Career Totals | |||||||||||||||||||||||||||||||
| Career | — | MLE | — | 3446 | 3156 | 709 | 151 | 30 | 104 | 228 | 1128 | 30 | 67 | 31 | 225 | 283 | 390 | 674 | 166 | 310 | 33 | 7 | 289 | 82 | -74 | +1 | +0 | -37 | +75 | -3.6 | |
| / 162G | — | MLE | — | 650 | 595 | 134 | 28 | 6 | 20 | 43 | 213 | 6 | 13 | 6 | 225 | 284 | 393 | 677 | 168 | 310 | 33 | 7 | 289 | 82 | -14 | +0 | +0 | -7 | +14 | -0.7 | |
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.
2019 AAAIowa Cubs · 43 PAwOBA .263 → .186 (−77)K% 41.9% → 52.7%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 41.86% | ÷1.025 | ×1.290 | — | — | 52.68% |
| BB% (unintentional) /PA | 4.65% | ÷0.968 | ×0.710 | — | ×0.982 | 3.35% |
| HBP% /PA | 0.00% | — | ×0.980 | — | ×0.982 | 0.00% |
| Singles /BIP | 39.13% | ÷0.993 | ×0.900 | — | ×0.982 | 34.83% |
| Doubles /BIP | 0.00% | ÷1.014 | ×0.810 | — | ×0.982 | 0.00% |
| Triples /BIP | 0.00% | ÷1.029 | ×0.810 | — | ×0.982 | 0.00% |
| Home runs /BIP | 4.35% | ÷1.050 | ×0.780 | — | ×0.982 | 3.17% |
Factors used: league row PCL. Park (home-season share, regressed): HR 110, 1B 99, 2B 103, 3B 106, K 105, BB 94 — applied at half strength. Age: age 29 vs a level average of 27.2 → −1.8% on BB/HBP/hit rates (1.8 yr older than average).
Result: wOBA .263 → .186; ISO .073 → .044; BABIP .409 → .360. 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 AAALas Vegas 51s · 572 PAwOBA .359 → .277 (−82)K% 31.8% → 41.6%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 31.82% | ÷0.986 | ×1.290 | — | — | 41.64% |
| BB% (unintentional) /PA | 13.81% | ÷1.039 | ×0.710 | — | ×0.992 | 9.36% |
| HBP% /PA | 0.52% | — | ×0.980 | — | ×0.992 | 0.51% |
| Singles /BIP | 20.20% | ÷0.992 | ×0.900 | ×1.046 | ×0.992 | 19.03% |
| Doubles /BIP | 10.60% | ÷0.918 | ×0.810 | ×1.046 | ×0.992 | 9.70% |
| Triples /BIP | 0.66% | ÷0.959 | ×0.810 | ×1.046 | ×0.992 | 0.58% |
| Home runs /BIP | 8.28% | ÷1.009 | ×0.780 | — | ×0.992 | 6.35% |
Factors used: league row PCL. Park (home-season share, regressed): HR 102, 1B 98, 2B 84, 3B 92, K 97, BB 108 — applied at half strength. Age: age 28 vs a level average of 27.2 → −0.8% on BB/HBP/hit rates (0.8 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.046.
Result: wOBA .359 → .277; ISO .229 → .171; BABIP .338 → .308. 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 AAAReno Aces · 433 PAwOBA .388 → .278 (−111)K% 29.1% → 40.9%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 29.10% | ÷0.919 | ×1.290 | — | — | 40.86% |
| BB% (unintentional) /PA | 10.16% | ÷1.007 | ×0.710 | — | ×1.003 | 7.18% |
| HBP% /PA | 0.00% | — | ×0.980 | — | ×1.003 | 0.00% |
| Singles /BIP | 18.99% | ÷0.992 | ×0.900 | ×1.049 | ×1.003 | 18.13% |
| Doubles /BIP | 10.47% | ÷1.089 | ×0.810 | ×1.049 | ×1.003 | 8.19% |
| Triples /BIP | 2.71% | ÷1.150 | ×0.810 | ×1.049 | ×1.003 | 2.01% |
| Home runs /BIP | 9.30% | ÷1.044 | ×0.780 | — | ×1.003 | 6.97% |
Factors used: league row PCL. Park (home-season share, regressed): HR 109, 1B 98, 2B 118, 3B 130, K 84, BB 102 — applied at half strength. Age: age 27 vs a level average of 27.2 → +0.3% on BB/HBP/hit rates (0.2 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.049.
Result: wOBA .388 → .278; ISO .294 → .194; BABIP .349 → .299. 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 AAAReno Aces · 395 PAwOBA .333 → .251 (−82)K% 29.4% → 38.2%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 29.37% | ÷0.991 | ×1.290 | — | — | 38.24% |
| BB% (unintentional) /PA | 7.59% | ÷0.979 | ×0.710 | — | ×1.018 | 5.61% |
| HBP% /PA | 0.51% | — | ×0.980 | — | ×1.018 | 0.51% |
| Singles /BIP | 24.90% | ÷1.052 | ×0.900 | ×1.020 | ×1.018 | 22.13% |
| Doubles /BIP | 9.54% | ÷1.060 | ×0.810 | ×1.020 | ×1.018 | 7.57% |
| Triples /BIP | 2.07% | ÷1.150 | ×0.810 | ×1.020 | ×1.018 | 1.52% |
| Home runs /BIP | 3.73% | ÷1.092 | ×0.780 | — | ×1.018 | 2.72% |
Factors used: league row PCL. Park (home-season share, regressed): HR 118, 1B 110, 2B 112, 3B 130, K 98, BB 96 — 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). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.020.
Result: wOBA .333 → .251; ISO .168 → .115; BABIP .376 → .318. 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 AAMobile BayBears · 327 PAwOBA .392 → .336 (−56)K% 16.8% → 21.0%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 16.82% | ÷0.975 | ×1.220 | — | — | 21.04% |
| BB% (unintentional) /PA | 11.62% | ÷1.043 | ×0.680 | — | ×0.998 | 7.56% |
| HBP% /PA | 0.92% | — | ×0.840 | — | ×0.998 | 0.77% |
| Singles /BIP | 25.78% | ÷1.011 | ×0.920 | ×1.009 | ×0.998 | 23.62% |
| Doubles /BIP | 6.67% | ÷0.961 | ×0.910 | ×1.009 | ×0.998 | 6.36% |
| Triples /BIP | 2.22% | ÷0.921 | ×0.880 | ×1.009 | ×0.998 | 2.14% |
| Home runs /BIP | 4.44% | ÷1.098 | ×0.800 | — | ×0.998 | 3.23% |
Factors used: league row SL. Park (home-season share, regressed): HR 120, 1B 102, 2B 92, 3B 84, K 95, BB 109 — 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 ×1.009.
Result: wOBA .392 → .336; ISO .196 → .168; BABIP .353 → .323. 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 AAAReno Aces · 53 PAwOBA .160 → .133 (−27)K% 26.4% → 35.1%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 26.42% | ÷0.969 | ×1.290 | — | — | 35.15% |
| BB% (unintentional) /PA | 1.89% | ÷0.997 | ×0.710 | — | ×1.033 | 1.39% |
| HBP% /PA | 0.00% | — | ×0.980 | — | ×1.033 | 0.00% |
| Singles /BIP | 15.79% | ÷0.964 | ×0.900 | ×1.050 | ×1.033 | 15.98% |
| Doubles /BIP | 5.26% | ÷1.083 | ×0.810 | ×1.050 | ×1.033 | 4.27% |
| Triples /BIP | 0.00% | ÷1.150 | ×0.810 | ×1.050 | ×1.033 | 0.00% |
| Home runs /BIP | 0.00% | ÷1.027 | ×0.780 | — | ×1.033 | 0.00% |
Factors used: league row PCL. Park (home-season share, regressed): HR 105, 1B 93, 2B 117, 3B 130, K 94, BB 99 — applied at half strength. Age: age 25 vs a level average of 27.2 → +3.3% on BB/HBP/hit rates (2.2 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.050.
Result: wOBA .160 → .133; ISO .038 → .028; BABIP .211 → .203. 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 AAMobile BayBears · 309 PAwOBA .336 → .296 (−40)K% 22.7% → 27.8%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 22.65% | ÷0.993 | ×1.220 | — | — | 27.82% |
| BB% (unintentional) /PA | 10.03% | ÷1.030 | ×0.680 | — | ×1.012 | 6.70% |
| HBP% /PA | 0.32% | — | ×0.840 | — | ×1.012 | 0.28% |
| Singles /BIP | 20.40% | ÷1.018 | ×0.920 | ×1.026 | ×1.012 | 19.14% |
| Doubles /BIP | 8.46% | ÷0.965 | ×0.910 | ×1.026 | ×1.012 | 8.28% |
| Triples /BIP | 1.99% | ÷1.038 | ×0.880 | ×1.026 | ×1.012 | 1.75% |
| Home runs /BIP | 3.98% | ÷0.902 | ×0.800 | — | ×1.012 | 3.57% |
Factors used: league row SL. Park (home-season share, regressed): HR 80, 1B 104, 2B 93, 3B 108, K 99, BB 106 — applied at half strength. Age: age 24 vs a level average of 24.8 → +1.2% on BB/HBP/hit rates (0.8 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.026.
Result: wOBA .336 → .296; ISO .181 → .167; BABIP .315 → .297. 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 AAAReno Aces · 204 PAwOBA .308 → .239 (−69)K% 27.0% → 36.0%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 26.96% | ÷0.965 | ×1.290 | — | — | 36.04% |
| BB% (unintentional) /PA | 4.90% | ÷1.049 | ×0.710 | — | ×1.048 | 3.48% |
| HBP% /PA | 0.49% | — | ×0.980 | — | ×1.048 | 0.50% |
| Singles /BIP | 24.44% | ÷1.047 | ×0.900 | ×1.041 | ×1.048 | 22.93% |
| Doubles /BIP | 5.93% | ÷1.047 | ×0.810 | ×1.041 | ×1.048 | 5.00% |
| Triples /BIP | 0.74% | ÷1.150 | ×0.810 | ×1.041 | ×1.048 | 0.57% |
| Home runs /BIP | 5.19% | ÷1.116 | ×0.780 | — | ×1.048 | 3.80% |
Factors used: league row PCL. Park (home-season share, regressed): HR 123, 1B 109, 2B 109, 3B 130, K 93, BB 110 — applied at half strength. Age: age 24 vs a level average of 27.2 → +4.8% on BB/HBP/hit rates (3.2 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.041.
Result: wOBA .308 → .239; ISO .163 → .113; BABIP .323 → .291. 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).
Not traceable per stint: some stints lack the counting stats the component translation needs. Level-wide factors that apply instead — .