Jarren Duran
LF Boston Red Sox| Year | Age | Lvl / Team | PA | AVG/OBP/SLG | HR | SB | wRC+ | WAR |
|---|---|---|---|---|---|---|---|---|
| 2024 | 27 | MLBBOS | 735 | .285/.343/.492 | 21 | 34 | 128 | 5.5 |
| 2025 | 28 | MLBBOS | 696 | .256/.334/.442 | 16 | 24 | 113 | 1.9 |
| 2026 | 29 | MLBBOS | 608 | .207/.269/.361 | 20 | 21 | 70 | -1.3 |
| 2027PROJ | 30 | MLBBOS | 555 | .246/.309/.417 | 17 | 31 | 100 | 1.3 |
| 2028PROJ | 31 | MLBBOS | 614 | .241/.303/.406 | 18 | 26 | 96 | 0.7 |
| 2029PROJ | 32 | MLBBOS | 614 | .234/.295/.391 | 17 | 19 | 89 | 0.1 |
Tools · Recent Form · Splits · ContractCON 55 / POW 50
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) | |||||||||||||||||||||||||||||||
| 2018 | 21 | A | Greenville Drive | — | 134 | 128 | 47 | 9 | 1 | 1 | 5 | 22 | 1 | 12 | 6 | 367 | 396 | 477 | 872 | 109 | 438 | 16 | 4 | 388 | 95 | — | — | — | — | — | — |
| 2019 | 22 | AA | Portland Sea Dogs | — | 352 | 320 | 80 | 11 | 5 | 1 | 23 | 84 | 5 | 28 | 8 | 250 | 310 | 325 | 635 | 75 | 335 | 24 | 7 | 287 | 46 | — | — | — | — | — | — |
| 2019 | 22 | A+ | Salem Red Sox | — | 226 | 199 | 77 | 13 | 3 | 4 | 23 | 44 | 3 | 18 | 5 | 387 | 458 | 543 | 1.000 | 156 | 480 | 19 | 10 | 441 | 109 | — | — | — | — | — | — |
| 2019 | 22 | INTL | Peoria Javelinas | — | 101 | 90 | 24 | 5 | 2 | 1 | 10 | 20 | 0 | 7 | 2 | 267 | 340 | 400 | 740 | 133 | 329 | 20 | 10 | 329 | 109 | — | — | — | — | — | — |
| 2020 | 23 | INTL | Puerto Rico | — | 100 | 80 | 23 | 3 | 1 | 1 | 17 | 21 | 2 | 9 | 0 | 287 | 424 | 388 | 812 | 100 | 373 | 21 | 17 | 372 | 138 | — | — | — | — | — | — |
| 2021 | 24 | MLB | Boston Red Sox | — | 112 | 107 | 23 | 3 | 2 | 2 | 4 | 40 | 0 | 2 | 1 | 215 | 243 | 336 | 580 | 121 | 318 | 36 | 4 | 255 | 57 | -6 | +0 | -0 | +1 | +2 | -0.2 |
| 2021 | 24 | AAA | Worcester Red Sox | — | 283 | 244 | 63 | 11 | 2 | 16 | 30 | 66 | 8 | 16 | 3 | 258 | 358 | 516 | 875 | 258 | 288 | 23 | 11 | 382 | 78 | — | — | — | — | — | — |
| 2022 | 25 | MLB | Boston Red Sox | — | 223 | 204 | 45 | 14 | 3 | 3 | 14 | 63 | 4 | 7 | 1 | 221 | 284 | 363 | 647 | 142 | 302 | 28 | 6 | 289 | 77 | -6 | +1 | -3 | +2 | +5 | -0.2 |
| 2022 | 25 | AAA | Worcester Red Sox | — | 307 | 279 | 79 | 16 | 6 | 10 | 26 | 73 | 2 | 18 | 3 | 283 | 349 | 491 | 840 | 208 | 352 | 24 | 8 | 369 | 91 | — | — | — | — | — | — |
| 2023 | 26 | MLB | Boston Red Sox | — | 362 | 332 | 98 | 34 | 2 | 8 | 24 | 90 | 3 | 24 | 2 | 295 | 347 | 482 | 829 | 187 | 381 | 25 | 7 | 363 | 121 | +9 | +4 | -3 | +1 | +8 | 2.0 |
| 2023 | 26 | AAA | Worcester Red Sox | — | 51 | 41 | 8 | 2 | 1 | 2 | 10 | 11 | 0 | 2 | 0 | 195 | 353 | 439 | 792 | 244 | 214 | 22 | 20 | 354 | 68 | — | — | — | — | — | — |
| 2024 | 27 | MLB | Boston Red Sox | — | 735 | 671 | 191 | 48 | 14 | 21 | 54 | 160 | 6 | 34 | 7 | 285 | 343 | 492 | 835 | 207 | 345 | 22 | 7 | 364 | 128 | +24 | +4 | +8 | +3 | +16 | 5.5 |
| 2025 | 28 | MLB | Boston Red Sox | — | 696 | 620 | 159 | 41 | 13 | 16 | 60 | 169 | 12 | 24 | 6 | 256 | 334 | 442 | 776 | 185 | 326 | 24 | 9 | 342 | 113 | +11 | +2 | -2 | -7 | +15 | 1.9 |
| 2026 | 29 | MLB | Boston Red Sox | — | 608 | 551 | 114 | 15 | 5 | 20 | 41 | 165 | 6 | 21 | 4 | 207 | 269 | 361 | 630 | 154 | 252 | 27 | 7 | 278 | 70 | -21 | +3 | -0 | -7 | +13 | -1.3 |
| ▸ Career Totals (raw MLB only — historical actual) | |||||||||||||||||||||||||||||||
| MLB Career | — | — | 2736 | 2485 | 630 | 155 | 39 | 70 | 197 | 687 | 31 | 112 | 21 | 254 | 316 | 432 | 748 | 178 | 321 | 25 | 7 | 329 | 109 | +28 | +14 | -1 | -7 | +59 | 9.5 | ||
| ▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents) | |||||||||||||||||||||||||||||||
| 2018 | 21 | A MLE | Greenville Drive | — | 134 | 130 | 39 | 7 | 1 | 1 | 3 | 29 | 1 | 12 | 6 | 300 | 321 | 392 | 713 | 92 | 381 | 22 | 2 | 309 | 95 | — | — | — | — | — | — |
| 2019 | 22 | AA MLE | Portland Sea Dogs | — | 352 | 328 | 71 | 8 | 4 | 1 | 15 | 103 | 5 | 28 | 8 | 216 | 261 | 274 | 536 | 58 | 305 | 29 | 4 | 236 | 46 | — | — | — | — | — | — |
| 2019 | 22 | A+ MLE | Salem Red Sox | — | 226 | 207 | 61 | 9 | 2 | 3 | 15 | 65 | 3 | 18 | 5 | 295 | 351 | 401 | 752 | 106 | 410 | 29 | 7 | 329 | 109 | — | — | — | — | — | — |
| 2021 | 24 | MLB MLE | Boston Red Sox | — | 112 | 107 | 23 | 3 | 2 | 2 | 4 | 40 | 0 | 2 | 1 | 215 | 243 | 336 | 580 | 121 | 318 | 36 | 4 | 253 | 57 | -6 | +0 | -0 | +1 | +2 | -0.2 |
| 2021 | 24 | AAA MLE | Worcester Red Sox | — | 283 | 253 | 52 | 9 | 2 | 9 | 21 | 78 | 8 | 16 | 3 | 206 | 287 | 364 | 651 | 158 | 256 | 28 | 7 | 284 | 78 | — | — | — | — | — | — |
| 2022 | 25 | MLB MLE | Boston Red Sox | — | 223 | 204 | 43 | 12 | 3 | 3 | 14 | 63 | 4 | 7 | 1 | 211 | 275 | 343 | 618 | 132 | 302 | 28 | 6 | 281 | 77 | -6 | +1 | -3 | +2 | +5 | -0.2 |
| 2022 | 25 | AAA MLE | Worcester Red Sox | — | 307 | 287 | 70 | 12 | 6 | 7 | 18 | 87 | 2 | 18 | 3 | 244 | 293 | 401 | 694 | 157 | 325 | 28 | 6 | 302 | 91 | — | — | — | — | — | — |
| 2023 | 26 | MLB MLE | Boston Red Sox | — | 362 | 334 | 93 | 30 | 2 | 8 | 23 | 90 | 3 | 24 | 2 | 278 | 331 | 452 | 783 | 174 | 381 | 25 | 6 | 348 | 121 | +9 | +4 | -3 | +1 | +8 | 2.0 |
| 2023 | 26 | AAA MLE | Worcester Red Sox | — | 51 | 44 | 6 | 1 | 1 | 1 | 7 | 13 | 0 | 2 | 0 | 136 | 255 | 273 | 528 | 136 | 180 | 25 | 14 | 268 | 68 | — | — | — | — | — | — |
| 2024 | 27 | MLB MLE | Boston Red Sox | — | 735 | 672 | 186 | 43 | 15 | 22 | 53 | 160 | 6 | 34 | 7 | 277 | 335 | 484 | 819 | 207 | 345 | 22 | 7 | 357 | 128 | +24 | +4 | +8 | +3 | +16 | 5.5 |
| 2025 | 28 | MLB MLE | Boston Red Sox | — | 696 | 621 | 154 | 36 | 14 | 16 | 59 | 169 | 12 | 24 | 6 | 248 | 325 | 428 | 753 | 180 | 326 | 24 | 8 | 335 | 113 | +11 | +2 | -2 | -7 | +15 | 1.9 |
| 2026 | 29 | MLB MLE | Boston Red Sox | — | 608 | 554 | 113 | 13 | 6 | 21 | 38 | 165 | 6 | 21 | 4 | 204 | 263 | 363 | 625 | 159 | 252 | 27 | 6 | 272 | 70 | -21 | +3 | -0 | -7 | +13 | -1.3 |
| 2018 | 21 | A MLE | Greenville Drive | — | 134 | 130 | 39 | 7 | 1 | 1 | 3 | 29 | 1 | 12 | 6 | 300 | 321 | 392 | 713 | 92 | 380 | 22 | 2 | 309 | 95 | — | — | — | — | — | — |
| 2018 | 21 | A RAW | Greenville Drive | — | 134 | 128 | 47 | 9 | 1 | 1 | 5 | 22 | 1 | 12 | 6 | 367 | 396 | 477 | 872 | 109 | 438 | 16 | 4 | 388 | 95 | — | — | — | — | — | — |
| 2019 | 22 | AA MLE | 3 teams | — | 679 | 630 | 155 | 20 | 7 | 5 | 35 | 198 | 8 | 53 | 15 | 246 | 294 | 324 | 618 | 78 | 349 | 29 | 5 | 272 | 70 | — | — | — | — | — | — |
| 2019 | 22 | AA RAW | 3 teams | — | 679 | 609 | 181 | 29 | 10 | 6 | 56 | 148 | 8 | 53 | 15 | 297 | 364 | 407 | 771 | 110 | 382 | 22 | 8 | 344 | 70 | — | — | — | — | — | — |
| 2020 | 23 | INTL MLE | Puerto Rico | — | 100 | 80 | 23 | 3 | 1 | 1 | 17 | 21 | 2 | 9 | 0 | 287 | 424 | 388 | 812 | 100 | 373 | 21 | 17 | — | — | — | — | — | — | — | — |
| 2020 | 23 | INTL RAW | Puerto Rico | — | 100 | 80 | 23 | 3 | 1 | 1 | 17 | 21 | 2 | 9 | 0 | 287 | 424 | 388 | 812 | 100 | 373 | 21 | 17 | 372 | 138 | — | — | — | — | — | — |
| 2021 | 24 | AAA MLE | 2 teams | — | 395 | 360 | 75 | 12 | 4 | 11 | 25 | 118 | 8 | 18 | 4 | 208 | 275 | 356 | 630 | 147 | 275 | 30 | 6 | 275 | 72 | — | — | — | — | — | — |
| 2021 | 24 | AAA RAW | 2 teams | — | 395 | 351 | 86 | 14 | 4 | 18 | 34 | 106 | 8 | 18 | 4 | 245 | 326 | 462 | 787 | 217 | 297 | 27 | 9 | 346 | 72 | — | — | — | — | — | — |
| 2022 | 25 | AAA MLE | 2 teams | — | 530 | 491 | 113 | 24 | 9 | 10 | 32 | 150 | 6 | 25 | 4 | 230 | 285 | 377 | 662 | 147 | 310 | 28 | 6 | 293 | 85 | — | — | — | — | — | — |
| 2022 | 25 | AAA RAW | 2 teams | — | 530 | 483 | 124 | 30 | 9 | 13 | 40 | 136 | 6 | 25 | 4 | 257 | 321 | 437 | 758 | 180 | 331 | 26 | 8 | 335 | 85 | — | — | — | — | — | — |
| 2023 | 26 | MLB MLE | 2 teams | — | 413 | 378 | 101 | 32 | 3 | 10 | 30 | 103 | 3 | 26 | 2 | 267 | 326 | 447 | 773 | 180 | 341 | 25 | 7 | 338 | 115 | +7 | +4 | -3 | +1 | +9 | 2.0 |
| 2023 | 26 | MLB RAW | 2 teams | — | 413 | 373 | 106 | 36 | 3 | 10 | 34 | 101 | 3 | 26 | 2 | 284 | 348 | 477 | 825 | 193 | 364 | 24 | 8 | 362 | 115 | +7 | +4 | -3 | +1 | +9 | 2.0 |
| 2024 | 27 | MLB MLE | Boston Red Sox | — | 735 | 672 | 186 | 43 | 15 | 22 | 53 | 160 | 6 | 34 | 7 | 277 | 335 | 484 | 819 | 207 | 333 | 22 | 7 | 357 | 128 | +24 | +4 | +8 | +3 | +16 | 5.5 |
| 2024 | 27 | MLB RAW | Boston Red Sox | — | 735 | 671 | 191 | 48 | 14 | 21 | 54 | 160 | 6 | 34 | 7 | 285 | 343 | 492 | 835 | 207 | 345 | 22 | 7 | 364 | 128 | +24 | +4 | +8 | +3 | +16 | 5.5 |
| 2025 | 28 | MLB MLE | Boston Red Sox | — | 696 | 621 | 154 | 36 | 14 | 16 | 59 | 169 | 12 | 24 | 6 | 248 | 325 | 428 | 753 | 180 | 314 | 24 | 8 | 335 | 113 | +11 | +2 | -2 | -7 | +15 | 1.9 |
| 2025 | 28 | MLB RAW | Boston Red Sox | — | 696 | 620 | 159 | 41 | 13 | 16 | 60 | 169 | 12 | 24 | 6 | 256 | 334 | 442 | 776 | 185 | 326 | 24 | 9 | 342 | 113 | +11 | +2 | -2 | -7 | +15 | 1.9 |
| 2026 | 29 | MLB MLE | Boston Red Sox | — | 608 | 554 | 113 | 13 | 6 | 21 | 38 | 165 | 6 | 21 | 4 | 204 | 263 | 363 | 625 | 159 | 245 | 27 | 6 | 272 | 70 | -21 | +3 | -0 | -7 | +13 | -1.3 |
| 2026 | 29 | MLB RAW | Boston Red Sox | — | 608 | 551 | 114 | 15 | 5 | 20 | 41 | 165 | 6 | 21 | 4 | 207 | 269 | 361 | 630 | 154 | 252 | 27 | 7 | 278 | 70 | -21 | +3 | -0 | -7 | +13 | -1.3 |
| 2018 | 21 | A MLE | Greenville Drive | — | 134 | 129 | 39 | 7 | 1 | 1 | 3 | 29 | 1 | 12 | 6 | 302 | 321 | 395 | 716 | 93 | 381 | 22 | 2 | 309 | 95 | — | — | — | — | — | — |
| 2019 | 22 | AA MLE | 3 teams | — | 679 | 631 | 155 | 20 | 7 | 5 | 35 | 198 | 8 | 53 | 15 | 246 | 294 | 323 | 618 | 78 | 346 | 29 | 5 | 272 | 70 | — | — | — | — | — | — |
| 2021 | 24 | AAA MLE | 2 teams | — | 395 | 359 | 75 | 12 | 4 | 11 | 25 | 118 | 8 | 18 | 4 | 209 | 275 | 357 | 631 | 148 | 274 | 30 | 6 | 275 | 72 | — | — | — | — | — | — |
| 2022 | 25 | AAA MLE | 2 teams | — | 530 | 487 | 113 | 24 | 9 | 10 | 32 | 150 | 6 | 25 | 4 | 232 | 285 | 380 | 665 | 148 | 315 | 28 | 6 | 293 | 85 | — | — | — | — | — | — |
| 2023 | 26 | MLB MLE | 2 teams | — | 413 | 377 | 101 | 32 | 3 | 10 | 30 | 103 | 3 | 26 | 2 | 268 | 326 | 448 | 774 | 180 | 356 | 25 | 7 | 338 | 115 | — | — | — | — | — | — |
| 2024 | 27 | MLB MLE | Boston Red Sox | — | 735 | 670 | 186 | 43 | 15 | 22 | 53 | 160 | 6 | 34 | 7 | 278 | 335 | 485 | 820 | 207 | 345 | 22 | 7 | 357 | 128 | — | — | — | — | — | — |
| 2025 | 28 | MLB MLE | Boston Red Sox | — | 696 | 620 | 154 | 36 | 14 | 16 | 59 | 169 | 12 | 24 | 6 | 248 | 325 | 429 | 754 | 181 | 326 | 24 | 8 | 335 | 113 | — | — | — | — | — | — |
| 2026 | 29 | MLB MLE | Boston Red Sox | — | 608 | 559 | 113 | 13 | 6 | 21 | 38 | 165 | 6 | 21 | 4 | 202 | 263 | 360 | 622 | 157 | 252 | 27 | 6 | 272 | 70 | — | — | — | — | — | — |
| ▸ Model inputs — neutral MLE (past 3 seasons) | |||||||||||||||||||||||||||||||
| 2024 | 27 | MLB MLE | Boston Red Sox | — | 735 | 670 | 186 | 43 | 15 | 22 | 53 | 160 | 6 | 34 | 7 | 278 | 335 | 485 | 820 | 207 | 345 | 22 | 7 | 357 | 128 | — | — | — | — | — | — |
| 2025 | 28 | MLB MLE | Boston Red Sox | — | 696 | 620 | 154 | 36 | 14 | 16 | 59 | 169 | 12 | 24 | 6 | 248 | 325 | 429 | 754 | 181 | 326 | 24 | 8 | 335 | 113 | — | — | — | — | — | — |
| 2026 | 29 | MLB MLE | Boston Red Sox | — | 608 | 559 | 113 | 13 | 6 | 21 | 38 | 165 | 6 | 21 | 4 | 202 | 263 | 360 | 622 | 157 | 252 | 27 | 6 | 272 | 70 | — | — | — | — | — | — |
| ▸ 2027 season | |||||||||||||||||||||||||||||||
| ▸ 2027 — full MLE projection (neutral park, full availability) | |||||||||||||||||||||||||||||||
| 2027 | 30 | MLB MLE | BOS | 100% | 611 | 556 | 134 | 21 | 8 | 19 | 43 | 156 | 7 | 34 | 6 | 242 | 305 | 413 | 718 | 172 | 299 | 26 | 7 | 316 | 100 | +0 | +4 | +3 | -7 | +13 | 1.3 |
| ▸ 2027 — real world (MLB) | |||||||||||||||||||||||||||||||
| 2027 | 30 | MLB CTX | BOS | 100% | 555 | 505 | 125 | 22 | 7 | 17 | 39 | 142 | 6 | 31 | 6 | 246 | 309 | 417 | 726 | 171 | 307 | 26 | 7 | 320 | 100 | +0 | +4 | +3 | -6 | +12 | 1.3 |
| ▸ Career projection (2028+) — MLB context, MLB playing time (PA × MLB%) | |||||||||||||||||||||||||||||||
| 2028 | 31 | MLB MLE | BOS | 100% | 614 | 559 | 133 | 21 | 8 | 19 | 43 | 159 | 7 | 26 | 5 | 236 | 299 | 402 | 700 | 165 | 294 | 26 | 7 | 309 | 96 | -3 | +3 | +0 | -7 | +13 | 0.7 |
| 2029 | 32 | MLB MLE | BOS | 100% | 614 | 560 | 129 | 19 | 8 | 18 | 42 | 162 | 7 | 19 | 4 | 230 | 291 | 387 | 679 | 157 | 288 | 26 | 7 | 300 | 89 | -8 | +2 | -0 | -7 | +13 | 0.1 |
| 2028 | 31 | MLB CTX | BOS | 100% | 614 | 559 | 134 | 23 | 7 | 18 | 43 | 159 | 7 | 26 | 5 | 241 | 303 | 406 | 709 | 165 | 302 | 26 | 7 | 313 | 96 | -3 | +3 | +0 | -7 | +13 | 0.7 |
| 2029 | 32 | MLB CTX | BOS | 100% | 614 | 560 | 131 | 22 | 7 | 17 | 42 | 162 | 7 | 19 | 4 | 234 | 295 | 391 | 686 | 157 | 296 | 26 | 7 | 304 | 89 | -8 | +2 | -0 | -7 | +13 | 0.1 |
| ▸ Career Totals | |||||||||||||||||||||||||||||||
| ▸ Career totals — MLB only (actual + projected) | |||||||||||||||||||||||||||||||
| Career | — | A+C | — | 3964 | 3604 | 895 | 200 | 53 | 105 | 282 | 1008 | 45 | 157 | 30 | 248 | 311 | 421 | 731 | 172 | 314 | 25 | 7 | 322 | 91 | +17 | +19 | -1 | -20 | +86 | 10.3 | |
| / 162G | — | A+C | — | 650 | 591 | 147 | 33 | 9 | 17 | 46 | 165 | 7 | 26 | 5 | 249 | 310 | 421 | 731 | 173 | 315 | 25 | 7 | 322 | 91 | +3 | +3 | -0 | -3 | +14 | 1.7 | |
| Career | — | MLE | — | 6073 | 5540 | 1342 | 249 | 83 | 151 | 416 | 1576 | 72 | 298 | 63 | 242 | 304 | 399 | 703 | 157 | 310 | 26 | 7 | 303 | 91 | +17 | +23 | +1 | -26 | +98 | 11.6 | |
| / 162G | — | MLE | — | 650 | 593 | 144 | 27 | 9 | 16 | 45 | 169 | 8 | 32 | 7 | 243 | 305 | 400 | 705 | 157 | 311 | 26 | 7 | 303 | 91 | +2 | +3 | +0 | -4 | +14 | 1.7 | |
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.
2023 AAAWorcester Red Sox · 51 PAwOBA .345 → .268 (−77)K% 21.6% → 25.3%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 21.57% | ÷1.023 | ×1.200 | — | — | 25.30% |
| BB% (unintentional) /PA | 19.61% | ÷0.986 | ×0.690 | — | ×1.003 | 13.77% |
| HBP% /PA | 0.00% | — | ×0.940 | — | ×1.003 | 0.00% |
| Singles /BIP | 10.00% | ÷0.996 | ×0.930 | — | ×1.003 | 9.36% |
| Doubles /BIP | 6.67% | ÷1.309 | ×0.830 | — | ×1.003 | 4.24% |
| Triples /BIP | 3.33% | ÷0.905 | ×0.970 | — | ×1.003 | 3.58% |
| Home runs /BIP | 6.67% | ÷1.008 | ×0.700 | — | ×1.003 | 4.64% |
Factors used: league row International League. Park (home-season share, regressed): HR 102, 1B 99, 2B 162, 3B 81, K 105, BB 97 — 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).
Result: wOBA .345 → .268; ISO .244 → .192; BABIP .214 → .180. 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 AAAWorcester Red Sox · 307 PAwOBA .358 → .302 (−56)K% 23.8% → 28.2%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 23.78% | ÷1.013 | ×1.200 | — | — | 28.17% |
| BB% (unintentional) /PA | 8.14% | ÷0.987 | ×0.690 | — | ×1.018 | 5.79% |
| HBP% /PA | 0.65% | — | ×0.940 | — | ×1.018 | 0.62% |
| Singles /BIP | 22.82% | ÷1.010 | ×0.930 | ×1.050 | ×1.018 | 22.45% |
| Doubles /BIP | 7.77% | ÷1.179 | ×0.830 | ×1.050 | ×1.018 | 5.85% |
| Triples /BIP | 2.91% | ÷1.000 | ×0.970 | ×1.050 | ×1.018 | 3.02% |
| Home runs /BIP | 4.85% | ÷0.939 | ×0.700 | — | ×1.018 | 3.68% |
Factors used: league row International League. Park (home-season share, regressed): HR 88, 1B 102, 2B 136, 3B 100, K 103, BB 97 — 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 ×1.050.
Result: wOBA .358 → .302; ISO .208 → .165; BABIP .352 → .325. 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 AAAWorcester Red Sox · 283 PAwOBA .373 → .284 (−89)K% 23.3% → 27.4%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 23.32% | ÷1.021 | ×1.200 | — | — | 27.42% |
| BB% (unintentional) /PA | 10.60% | ÷1.008 | ×0.690 | — | ×1.033 | 7.50% |
| HBP% /PA | 2.83% | — | ×0.940 | — | ×1.033 | 2.74% |
| Singles /BIP | 19.10% | ÷0.974 | ×0.930 | ×0.969 | ×1.033 | 18.26% |
| Doubles /BIP | 6.18% | ÷0.992 | ×0.830 | ×0.969 | ×1.033 | 5.18% |
| Triples /BIP | 1.12% | ÷1.023 | ×0.920 | ×0.969 | ×1.033 | 1.01% |
| Home runs /BIP | 8.99% | ÷1.318 | ×0.700 | — | ×1.033 | 4.93% |
Factors used: level-wide AAA factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 164, 1B 95, 2B 98, 3B 105, K 104, BB 102 — 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 ×0.969.
Result: wOBA .373 → .284; ISO .258 → .159; BABIP .288 → .256. 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 AAPortland Sea Dogs · 352 PAwOBA .278 → .236 (−42)K% 23.9% → 29.4%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 23.86% | ÷0.991 | ×1.220 | — | — | 29.38% |
| BB% (unintentional) /PA | 5.97% | ÷0.997 | ×0.700 | — | ×1.027 | 4.30% |
| HBP% /PA | 1.42% | — | ×0.850 | — | ×1.027 | 1.24% |
| Singles /BIP | 26.69% | ÷1.016 | ×0.970 | ×0.967 | ×1.027 | 25.32% |
| Doubles /BIP | 4.66% | ÷1.158 | ×0.860 | ×0.967 | ×1.027 | 3.44% |
| Triples /BIP | 2.12% | ÷1.150 | ×0.950 | ×0.967 | ×1.027 | 1.74% |
| Home runs /BIP | 0.42% | ÷0.953 | ×0.780 | — | ×1.027 | 0.36% |
Factors used: league row EL. Park (home-season share, regressed): HR 91, 1B 103, 2B 132, 3B 130, K 98, BB 99 — applied at half strength. Age: age 23 vs a level average of 24.8 → +2.7% on BB/HBP/hit rates (1.8 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.967.
Result: wOBA .278 → .236; ISO .075 → .057; BABIP .335 → .305. 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 A+Salem Red Sox · 226 PAwOBA .432 → .329 (−103)K% 19.5% → 28.9%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 19.47% | ÷0.958 | ×1.420 | — | — | 28.86% |
| BB% (unintentional) /PA | 10.18% | ÷0.968 | ×0.630 | — | ×0.998 | 6.61% |
| HBP% /PA | 1.33% | — | ×0.860 | — | ×0.998 | 1.14% |
| Singles /BIP | 36.77% | ÷1.003 | ×0.940 | ×0.950 | ×0.998 | 32.68% |
| Doubles /BIP | 8.39% | ÷1.070 | ×0.830 | ×0.950 | ×0.998 | 6.17% |
| Triples /BIP | 1.94% | ÷0.972 | ×0.800 | ×0.950 | ×0.998 | 1.51% |
| Home runs /BIP | 2.58% | ÷1.080 | ×0.900 | — | ×0.998 | 2.15% |
Factors used: league row CAR. Park (home-season share, regressed): HR 116, 1B 101, 2B 114, 3B 94, K 92, BB 94 — 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 .432 → .329; ISO .156 → .113; BABIP .480 → .410. 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 AGreenville Drive · 134 PAwOBA .378 → .309 (−69)K% 16.4% → 21.5%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 16.42% | ÷1.024 | ×1.340 | — | — | 21.48% |
| BB% (unintentional) /PA | 3.73% | ÷1.008 | ×0.660 | — | — | 2.44% |
| HBP% /PA | 0.75% | — | ×0.770 | — | — | 0.57% |
| Singles /BIP | 33.96% | ÷1.040 | ×0.920 | ×0.989 | — | 29.70% |
| Doubles /BIP | 8.49% | ÷0.961 | ×0.820 | ×0.989 | — | 7.17% |
| Triples /BIP | 0.94% | ÷0.991 | ×0.940 | ×0.989 | — | 0.88% |
| Home runs /BIP | 0.94% | ÷0.923 | ×0.820 | — | — | 0.84% |
Factors used: league row SAL. Park (home-season share, regressed): HR 85, 1B 108, 2B 92, 3B 98, K 105, BB 102 — 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 ×0.989.
Result: wOBA .378 → .309; ISO .109 → .090; BABIP .438 → .381. 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 — .