Kelvin Alcantara
OF ACL Mariners| Year | Age | Lvl / Team | PA | AVG/OBP/SLG | HR | SB | wRC+ | WAR | MLE AVG/OBP/SLG |
|---|---|---|---|---|---|---|---|---|---|
| 2024 | 18 | ROKSEA | 194 | .287/.387/.433 | 4 | 2 | 68 | — | .214/.288/.312 |
| 2025 | 19 | ROKSEA | 235 | .258/.366/.394 | 4 | 3 | 53 | — | .188/.272/.279 |
| 2026 | 20 | A/ROKSEA | 233 | .301/.407/.505 | 10 | 0 | 80 | — | .221/.299/.370 |
| 2027PROJMLE | 21 | MLBSEA | 343 | .220/.285/.334 | 6 | 5 | 75 | -0.1 | |
| 2028PROJ34% MLB | 22 | MLBSEA | 63 | .221/.287/.339 | 1 | 1 | 79 | -0.0 | |
| 2029PROJ48% MLB | 23 | MLBSEA | 132 | .224/.291/.346 | 3 | 2 | 82 | -0.1 |
Tools · ContractCON 40 / POW 30
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) | |||||||||||||||||||||||||||||||
| 2023 | 17 | ROK | DSL Mariners | — | 146 | 115 | 30 | 6 | 1 | 1 | 29 | 23 | 1 | 1 | 2 | 261 | 414 | 357 | 770 | 96 | 315 | 16 | 20 | 358 | 53 | — | — | — | — | — | — |
| 2024 | 18 | ROK | ACL Mariners | — | 194 | 164 | 47 | 6 | 3 | 4 | 25 | 45 | 2 | 2 | 0 | 287 | 387 | 433 | 820 | 146 | 364 | 23 | 13 | 364 | 68 | — | — | — | — | — | — |
| 2025 | 19 | ROK | ACL Mariners | — | 235 | 198 | 51 | 13 | 1 | 4 | 27 | 45 | 7 | 3 | 0 | 258 | 366 | 394 | 760 | 136 | 309 | 19 | 11 | 342 | 53 | — | — | — | — | — | — |
| 2026 | 20 | A | Inland Empire 66ers | — | 15 | 14 | 5 | 1 | 0 | 1 | 1 | 6 | 0 | 0 | 0 | 357 | 400 | 643 | 1.043 | 286 | 571 | 40 | 7 | 452 | 86 | — | — | — | — | — | — |
| 2026 | 20 | ROK | ACL Mariners | — | 218 | 182 | 54 | 9 | 0 | 9 | 31 | 34 | 3 | 0 | 0 | 297 | 407 | 495 | 902 | 198 | 319 | 16 | 14 | 398 | 80 | — | — | — | — | — | — |
| ▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents) | |||||||||||||||||||||||||||||||
| 2023 | 17 | ROK MLE | DSL Mariners | — | 146 | 124 | 22 | 4 | 1 | 0 | 20 | 27 | 1 | 1 | 2 | 177 | 297 | 226 | 522 | 48 | 216 | 18 | 14 | 247 | 53 | — | — | — | — | — | — |
| 2024 | 18 | ROK MLE | ACL Mariners | — | 194 | 173 | 37 | 4 | 2 | 3 | 16 | 66 | 2 | 2 | 0 | 214 | 288 | 312 | 600 | 98 | 307 | 34 | 8 | 269 | 68 | — | — | — | — | — | — |
| 2025 | 19 | ROK MLE | ACL Mariners | — | 235 | 208 | 39 | 8 | 1 | 3 | 17 | 65 | 7 | 3 | 0 | 188 | 272 | 279 | 550 | 91 | 243 | 28 | 7 | 246 | 53 | — | — | — | — | — | — |
| 2026 | 20 | A MLE | Inland Empire 66ers | — | 15 | 14 | 4 | 1 | 0 | 1 | 1 | 8 | 0 | 0 | 0 | 286 | 333 | 571 | 905 | 286 | 507 | 53 | 7 | 295 | 86 | — | — | — | — | — | — |
| 2026 | 20 | ROK MLE | ACL Mariners | — | 218 | 194 | 42 | 6 | 0 | 7 | 19 | 49 | 3 | 0 | 0 | 216 | 296 | 356 | 652 | 139 | 247 | 22 | 9 | 286 | 80 | — | — | — | — | — | — |
| 2023 | 17 | ROK MLE | DSL Mariners | — | 146 | 124 | 22 | 4 | 1 | 0 | 20 | 27 | 1 | 1 | 2 | 177 | 297 | 226 | 522 | 48 | 224 | 18 | 14 | 247 | 53 | — | — | — | — | — | — |
| 2023 | 17 | ROK RAW | DSL Mariners | — | 146 | 115 | 30 | 6 | 1 | 1 | 29 | 23 | 1 | 1 | 2 | 261 | 414 | 357 | 770 | 96 | 315 | 16 | 20 | 358 | 53 | — | — | — | — | — | — |
| 2024 | 18 | ROK MLE | ACL Mariners | — | 194 | 173 | 37 | 4 | 2 | 3 | 16 | 66 | 2 | 2 | 0 | 214 | 288 | 312 | 600 | 98 | 318 | 34 | 8 | 269 | 68 | — | — | — | — | — | — |
| 2024 | 18 | ROK RAW | ACL Mariners | — | 194 | 164 | 47 | 6 | 3 | 4 | 25 | 45 | 2 | 2 | 0 | 287 | 387 | 433 | 820 | 146 | 364 | 23 | 13 | 364 | 68 | — | — | — | — | — | — |
| 2025 | 19 | ROK MLE | ACL Mariners | — | 235 | 208 | 39 | 8 | 1 | 3 | 17 | 65 | 7 | 3 | 0 | 188 | 272 | 279 | 550 | 91 | 252 | 28 | 7 | 246 | 53 | — | — | — | — | — | — |
| 2025 | 19 | ROK RAW | ACL Mariners | — | 235 | 198 | 51 | 13 | 1 | 4 | 27 | 45 | 7 | 3 | 0 | 258 | 366 | 394 | 760 | 136 | 309 | 19 | 11 | 342 | 53 | — | — | — | — | — | — |
| 2026 | 20 | ROK MLE | 2 teams | — | 233 | 208 | 46 | 7 | 0 | 8 | 20 | 57 | 3 | 0 | 0 | 221 | 299 | 370 | 669 | 149 | 262 | 24 | 9 | 287 | 80 | — | — | — | — | — | — |
| 2026 | 20 | ROK RAW | 2 teams | — | 233 | 196 | 59 | 10 | 0 | 10 | 32 | 40 | 3 | 0 | 0 | 301 | 407 | 505 | 912 | 204 | 331 | 17 | 14 | 401 | 80 | — | — | — | — | — | — |
| 2023 | 17 | ROK MLE | DSL Mariners | — | 146 | 124 | 22 | 4 | 1 | 0 | 20 | 27 | 1 | 1 | 2 | 177 | 297 | 226 | 522 | 48 | 216 | 18 | 14 | 247 | 53 | — | — | — | — | — | — |
| 2024 | 18 | ROK MLE | ACL Mariners | — | 194 | 174 | 37 | 4 | 2 | 3 | 16 | 66 | 2 | 2 | 0 | 213 | 288 | 310 | 598 | 98 | 307 | 34 | 8 | 269 | 68 | — | — | — | — | — | — |
| 2025 | 19 | ROK MLE | ACL Mariners | — | 235 | 209 | 39 | 8 | 1 | 3 | 17 | 65 | 7 | 3 | 0 | 187 | 272 | 278 | 549 | 91 | 243 | 28 | 7 | 246 | 53 | — | — | — | — | — | — |
| 2026 | 20 | ROK MLE | 2 teams | — | 233 | 208 | 46 | 7 | 0 | 8 | 20 | 57 | 3 | 0 | 0 | 221 | 299 | 370 | 669 | 149 | 264 | 24 | 9 | 287 | 80 | — | — | — | — | — | — |
| ▸ Model inputs — neutral MLE (past 3 seasons) | |||||||||||||||||||||||||||||||
| 2024 | 18 | ROK MLE | ACL Mariners | — | 194 | 174 | 37 | 4 | 2 | 3 | 16 | 66 | 2 | 2 | 0 | 213 | 288 | 310 | 598 | 98 | 307 | 34 | 8 | 269 | 68 | — | — | — | — | — | — |
| 2025 | 19 | ROK MLE | ACL Mariners | — | 235 | 209 | 39 | 8 | 1 | 3 | 17 | 65 | 7 | 3 | 0 | 187 | 272 | 278 | 549 | 91 | 243 | 28 | 7 | 246 | 53 | — | — | — | — | — | — |
| 2026 | 20 | ROK MLE | 2 teams | — | 233 | 208 | 46 | 7 | 0 | 8 | 20 | 57 | 3 | 0 | 0 | 221 | 299 | 370 | 669 | 149 | 264 | 24 | 9 | 287 | 80 | — | — | — | — | — | — |
| ▸ 2027 season | |||||||||||||||||||||||||||||||
| ▸ 2027 — full MLE projection (neutral park, full availability) | |||||||||||||||||||||||||||||||
| 2027 | 21 | MLB MLE | SEA | 0% | 343 | 311 | 68 | 13 | 2 | 6 | 25 | 81 | 4 | 5 | 1 | 220 | 285 | 334 | 619 | 114 | 274 | 24 | 7 | 279 | 75 | -10 | +1 | +0 | -2 | +7 | -0.1 |
| ▸ Career projection (2028+) — MLB context, MLB playing time (PA × MLB%) | |||||||||||||||||||||||||||||||
| 2028 | 22 | MLB MLE | SEA | 34% | 182 | 165 | 37 | 7 | 1 | 4 | 13 | 42 | 2 | 3 | 1 | 223 | 289 | 344 | 633 | 121 | 276 | 23 | 7 | 285 | 79 | -5 | +0 | +0 | -1 | +4 | -0.2 |
| 2029 | 23 | MLB MLE | SEA | 48% | 273 | 248 | 56 | 11 | 1 | 6 | 20 | 63 | 3 | 4 | 1 | 226 | 293 | 351 | 644 | 125 | 277 | 23 | 7 | 289 | 82 | -6 | +0 | +0 | -2 | +6 | -0.1 |
| 2030 | 24 | MLB MLE | SEA | 53% | 350 | 317 | 73 | 14 | 2 | 8 | 26 | 80 | 4 | 5 | 1 | 228 | 295 | 357 | 652 | 129 | 279 | 23 | 7 | 292 | 84 | -7 | +1 | +0 | -2 | +8 | -0.1 |
| 2031 | 25 | MLB MLE | SEA | 55% | 392 | 355 | 81 | 15 | 2 | 9 | 30 | 90 | 4 | 5 | 1 | 229 | 297 | 360 | 657 | 131 | 279 | 23 | 8 | 295 | 85 | -7 | +1 | +0 | -2 | +8 | -0.0 |
| 2032 | 26 | MLB MLE | SEA | 56% | 416 | 376 | 86 | 16 | 2 | 10 | 32 | 95 | 5 | 5 | 2 | 230 | 298 | 362 | 660 | 132 | 280 | 23 | 8 | 296 | 86 | -7 | +0 | +0 | -2 | +9 | -0.0 |
| 2033 | 27 | MLB MLE | SEA | 55% | 425 | 384 | 88 | 17 | 2 | 10 | 33 | 98 | 5 | 5 | 2 | 229 | 297 | 360 | 657 | 131 | 279 | 23 | 8 | 294 | 85 | -7 | +0 | +0 | -3 | +9 | -0.1 |
| 2034 | 28 | MLB MLE | SEA | 59% | 425 | 385 | 88 | 17 | 2 | 10 | 33 | 99 | 4 | 5 | 2 | 227 | 295 | 355 | 650 | 128 | 278 | 23 | 8 | 292 | 83 | -8 | +0 | -1 | -3 | +9 | -0.2 |
| 2035 | 29 | MLB MLE | SEA | 61% | 416 | 377 | 85 | 16 | 2 | 9 | 32 | 98 | 4 | 4 | 2 | 224 | 292 | 349 | 641 | 124 | 277 | 24 | 8 | 288 | 81 | -9 | +0 | -1 | -2 | +9 | -0.4 |
| 2028 | 22 | MLB CTX | SEA | 34% | 63 | 57 | 12 | 2 | 0 | 1 | 5 | 15 | 1 | 1 | 0 | 221 | 287 | 339 | 627 | 118 | 273 | 24 | 8 | 282 | 79 | -2 | +0 | +0 | -0 | +1 | -0.0 |
| 2029 | 23 | MLB CTX | SEA | 48% | 132 | 120 | 27 | 5 | 1 | 3 | 10 | 30 | 1 | 2 | 1 | 224 | 291 | 346 | 637 | 122 | 275 | 23 | 8 | 286 | 82 | -3 | +0 | +0 | -1 | +3 | -0.1 |
| 2030 | 24 | MLB CTX | SEA | 53% | 185 | 167 | 38 | 7 | 1 | 4 | 14 | 42 | 2 | 3 | 1 | 226 | 293 | 352 | 645 | 126 | 276 | 23 | 8 | 290 | 84 | -4 | +0 | +0 | -1 | +4 | -0.0 |
| 2031 | 25 | MLB CTX | SEA | 55% | 215 | 195 | 44 | 8 | 1 | 5 | 16 | 49 | 2 | 3 | 1 | 227 | 295 | 355 | 650 | 128 | 277 | 23 | 7 | 292 | 85 | -4 | +0 | +0 | -1 | +5 | -0.0 |
| 2032 | 26 | MLB CTX | SEA | 56% | 232 | 209 | 47 | 9 | 1 | 5 | 18 | 53 | 3 | 3 | 1 | 228 | 296 | 357 | 653 | 129 | 277 | 23 | 8 | 293 | 86 | -4 | +0 | +0 | -1 | +5 | 0.0 |
| 2033 | 27 | MLB CTX | SEA | 55% | 234 | 211 | 48 | 9 | 1 | 5 | 18 | 54 | 3 | 3 | 1 | 227 | 295 | 354 | 649 | 128 | 277 | 23 | 8 | 291 | 85 | -4 | +0 | +0 | -1 | +5 | -0.0 |
| 2034 | 28 | MLB CTX | SEA | 59% | 250 | 226 | 51 | 10 | 1 | 5 | 19 | 58 | 3 | 3 | 1 | 225 | 293 | 350 | 643 | 125 | 276 | 23 | 8 | 289 | 83 | -5 | +0 | -0 | -2 | +5 | -0.1 |
| 2035 | 29 | MLB CTX | SEA | 61% | 253 | 229 | 51 | 10 | 1 | 5 | 19 | 59 | 3 | 2 | 1 | 222 | 290 | 344 | 634 | 121 | 274 | 23 | 8 | 285 | 81 | -6 | +0 | -1 | -2 | +5 | -0.3 |
| ▸ Career Totals | |||||||||||||||||||||||||||||||
| ▸ Career totals — MLB only (actual + projected) | |||||||||||||||||||||||||||||||
| Career | — | A+C | — | 1564 | 1414 | 318 | 60 | 7 | 33 | 119 | 360 | 18 | 20 | 7 | 225 | 293 | 347 | 641 | 122 | 277 | 23 | 8 | 289 | 79 | -30 | +1 | -1 | -9 | +34 | -0.6 | |
| / 162G | — | A+C | — | 650 | 588 | 133 | 25 | 3 | 14 | 49 | 150 | 7 | 8 | 3 | 226 | 293 | 350 | 643 | 124 | 279 | 23 | 8 | 289 | 79 | -13 | +0 | -1 | -4 | +14 | -0.2 | |
| Career | — | MLE | — | 3823 | 3443 | 766 | 141 | 19 | 83 | 302 | 912 | 46 | 44 | 15 | 222 | 294 | 347 | 641 | 124 | 276 | 24 | 8 | 285 | 79 | -60 | +2 | -2 | -18 | +65 | -1.3 | |
| / 162G | — | MLE | — | 650 | 585 | 130 | 24 | 3 | 14 | 51 | 155 | 8 | 7 | 3 | 222 | 293 | 345 | 638 | 123 | 276 | 24 | 8 | 285 | 79 | -13 | +1 | -0 | -4 | +14 | -0.3 | |
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.
2026 ROKACL Mariners · 218 PAwOBA .391 → .286 (−105)K% 15.6% → 22.5%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 15.60% | ÷1.000 | ×1.440 | — | — | 22.46% |
| BB% (unintentional) /PA | 14.22% | ÷1.000 | ×0.620 | — | ×0.985 | 8.68% |
| HBP% /PA | 1.38% | — | ×0.720 | — | ×0.985 | 0.98% |
| Singles /BIP | 24.32% | ÷1.000 | ×0.820 | ×0.995 | ×0.985 | 19.55% |
| Doubles /BIP | 6.08% | ÷1.000 | ×0.720 | ×0.995 | ×0.985 | 4.29% |
| Triples /BIP | 0.00% | ÷1.000 | ×0.720 | ×0.995 | ×0.985 | 0.00% |
| Home runs /BIP | 6.08% | ÷1.000 | ×0.780 | — | ×0.985 | 4.67% |
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 21 vs a level average of 19.5 → −1.5% on BB/HBP/hit rates (1.5 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.995.
Result: wOBA .391 → .286; ISO .198 → .149; BABIP .319 → .247. 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).
2026 AInland Empire 66ers · 15 PAwOBA .439 → .295 (−143)K% 40.0% → 54.4%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 40.00% | ÷1.000 | ×1.360 | — | — | 54.40% |
| BB% (unintentional) /PA | 6.67% | ÷1.000 | ×0.690 | — | ×1.015 | 4.67% |
| HBP% /PA | 0.00% | — | ×0.780 | — | ×1.015 | 0.00% |
| Singles /BIP | 37.50% | ÷1.000 | ×0.920 | — | ×1.015 | 35.02% |
| Doubles /BIP | 12.50% | ÷1.000 | ×0.830 | — | ×1.015 | 10.53% |
| Triples /BIP | 0.00% | ÷1.000 | ×0.910 | — | ×1.015 | 0.00% |
| Home runs /BIP | 12.50% | ÷1.000 | ×0.800 | — | ×1.015 | 10.15% |
Factors used: level-wide A 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 21 vs a level average of 22.0 → +1.5% on BB/HBP/hit rates (1.0 yr younger than average).
Result: wOBA .439 → .295; ISO .286 → .180; BABIP .571 → .507. 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).
2025 ROKACL Mariners · 235 PAwOBA .338 → .246 (−92)K% 19.1% → 27.6%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 19.15% | ÷0.999 | ×1.440 | — | — | 27.61% |
| BB% (unintentional) /PA | 11.49% | ÷1.000 | ×0.620 | — | ×0.995 | 7.09% |
| HBP% /PA | 2.98% | — | ×0.720 | — | ×0.995 | 2.13% |
| Singles /BIP | 21.57% | ÷0.942 | ×0.820 | ×0.967 | ×0.995 | 18.07% |
| Doubles /BIP | 8.50% | ÷1.046 | ×0.720 | ×0.967 | ×0.995 | 5.63% |
| Triples /BIP | 0.65% | ÷0.900 | ×0.720 | ×0.967 | ×0.995 | 0.50% |
| Home runs /BIP | 2.61% | ÷0.886 | ×0.780 | — | ×0.995 | 2.29% |
Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 77, 1B 88, 2B 109, 3B 80, K 100, BB 100 — applied at half strength. Age: age 20 vs a level average of 19.5 → −0.5% on BB/HBP/hit rates (0.5 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.967.
Result: wOBA .338 → .246; ISO .136 → .101; BABIP .309 → .243. 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).
2024 ROKACL Mariners · 194 PAwOBA .360 → .269 (−91)K% 23.2% → 34.0%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 23.20% | ÷0.981 | ×1.440 | — | — | 34.03% |
| BB% (unintentional) /PA | 12.89% | ÷0.966 | ×0.620 | — | ×1.008 | 8.34% |
| HBP% /PA | 1.03% | — | ×0.720 | — | ×1.008 | 0.75% |
| Singles /BIP | 28.57% | ÷0.962 | ×0.820 | ×1.023 | ×1.008 | 25.10% |
| Doubles /BIP | 5.04% | ÷0.970 | ×0.720 | ×1.023 | ×1.008 | 3.86% |
| Triples /BIP | 2.52% | ÷1.150 | ×0.720 | ×1.023 | ×1.008 | 1.63% |
| Home runs /BIP | 3.36% | ÷0.863 | ×0.780 | — | ×1.008 | 3.06% |
Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 73, 1B 92, 2B 94, 3B 130, K 96, BB 93 — 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 ×1.023.
Result: wOBA .360 → .269; ISO .146 → .110; BABIP .364 → .307. 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 DSLDSL Mariners · 146 PAwOBA .350 → .247 (−103)K% 15.8% → 18.8%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 15.75% | ÷1.020 | ×1.220 | — | — | 18.85% |
| BB% (unintentional) /PA | 19.18% | ÷1.005 | ×0.700 | — | ×1.008 | 13.46% |
| HBP% /PA | 0.68% | — | ×0.700 | — | ×1.008 | 0.48% |
| Singles /BIP | 23.91% | ÷0.978 | ×0.680 | ×1.036 | ×1.008 | 17.34% |
| Doubles /BIP | 6.52% | ÷1.092 | ×0.600 | ×1.036 | ×1.008 | 3.74% |
| Triples /BIP | 1.09% | ÷1.049 | ×0.600 | ×1.036 | ×1.008 | 0.65% |
| Home runs /BIP | 1.09% | ÷1.034 | ×0.470 | — | ×1.008 | 0.50% |
Factors used: level-wide DSL factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 107, 1B 96, 2B 118, 3B 110, K 104, BB 101 — applied at half strength. Age: age 18 vs a level average of 18.5 → +0.8% on BB/HBP/hit rates (0.5 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.036.
Result: wOBA .350 → .247; ISO .096 → .056; BABIP .315 → .216. 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).