Hyungchan Um
C Columbia Fireflies| Year | Age | Lvl / Team | PA | AVG/OBP/SLG | HR | SB | wRC+ | WAR | MLE AVG/OBP/SLG |
|---|---|---|---|---|---|---|---|---|---|
| 2024 | 20 | A/ROK/INTL2 orgs | 469 | .259/.355/.442 | 18 | 7 | 83 | — | .178/.268/.274 |
| 2025 | 21 | A/ROKKC | 293 | .231/.334/.327 | 3 | 4 | 41 | — | .176/.259/.245 |
| 2026 | 22 | AA/A+/A2 orgs | 352 | .247/.360/.394 | 9 | 9 | 69 | — | .212/.300/.331 |
| 2027PROJMLE | 23 | MLBKC | 462 | .201/.284/.306 | 8 | 7 | 69 | 0.2 | |
| 2028PROJ30% MLB | 24 | MLBKC | 95 | .203/.286/.311 | 2 | 1 | 73 | 0.1 | |
| 2029PROJ44% MLB | 25 | MLBKC | 159 | .206/.288/.317 | 3 | 2 | 75 | 0.2 |
Tools · ContractCON 35 / 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. Catcher framing: only 2027 Statcast framing is modeled (Baseball Savant server-caches the leaderboard to the current season); prior-year framing is unmodeled — projections for established framers may run 1-3 WAR low.
| 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 | 19 | ROK | ACL Royals | — | 59 | 50 | 11 | 2 | 0 | 1 | 7 | 15 | 0 | 1 | 0 | 220 | 316 | 320 | 636 | 100 | 278 | 25 | 12 | 284 | 24 | — | — | — | — | — | — |
| 2023 | 19 | INTL | Brisbane Bandits | — | 122 | 117 | 29 | 3 | 0 | 4 | 3 | 29 | 1 | 1 | 0 | 248 | 273 | 376 | 649 | 128 | 294 | 24 | 2 | 286 | 80 | — | — | — | — | — | — |
| 2024 | 20 | A | Columbia Fireflies | — | 198 | 166 | 34 | 5 | 0 | 4 | 25 | 56 | 7 | 1 | 1 | 205 | 333 | 307 | 641 | 102 | 283 | 28 | 13 | 303 | 37 | — | — | — | — | — | — |
| 2024 | 20 | ROK | ACL Royals | — | 116 | 100 | 31 | 7 | 0 | 4 | 12 | 25 | 3 | 3 | 0 | 310 | 397 | 500 | 897 | 190 | 380 | 22 | 10 | 396 | 70 | — | — | — | — | — | — |
| 2024 | 20 | INTL | Brisbane Bandits | — | 155 | 139 | 40 | 6 | 1 | 10 | 10 | 39 | 4 | 3 | 1 | 288 | 353 | 561 | 914 | 273 | 330 | 25 | 6 | 393 | 152 | — | — | — | — | — | — |
| 2025 | 21 | A | Columbia Fireflies | — | 262 | 222 | 50 | 13 | 0 | 3 | 32 | 54 | 6 | 4 | 1 | 225 | 338 | 324 | 663 | 99 | 283 | 21 | 12 | 307 | 43 | — | — | — | — | — | — |
| 2025 | 21 | ROK | ACL Royals | — | 31 | 29 | 8 | 2 | 0 | 0 | 1 | 4 | 0 | 0 | 0 | 276 | 300 | 345 | 645 | 69 | 320 | 13 | 3 | 281 | 24 | — | — | — | — | — | — |
| 2026 | 22 | AA | Northwest Arkansas Naturals | — | 39 | 33 | 9 | 1 | 1 | 0 | 4 | 10 | 0 | 0 | 1 | 273 | 351 | 364 | 715 | 91 | 391 | 26 | 10 | 308 | 75 | — | — | — | — | — | — |
| 2026 | 22 | A+ | Quad Cities River Bandits | — | 37 | 29 | 7 | 2 | 1 | 1 | 6 | 12 | 1 | 1 | 0 | 241 | 389 | 483 | 872 | 241 | 375 | 32 | 16 | 376 | 85 | — | — | — | — | — | — |
| 2026 | 22 | A | Columbia Fireflies | — | 276 | 230 | 56 | 5 | 2 | 8 | 34 | 60 | 7 | 8 | 0 | 243 | 358 | 387 | 745 | 143 | 291 | 22 | 12 | 334 | 66 | — | — | — | — | — | — |
| ▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents) | |||||||||||||||||||||||||||||||
| 2023 | 19 | ROK MLE | ACL Royals | — | 59 | 53 | 8 | 1 | 0 | 1 | 4 | 22 | 0 | 1 | 0 | 151 | 211 | 226 | 437 | 75 | 217 | 37 | 7 | 203 | 24 | — | — | — | — | — | — |
| 2024 | 20 | A MLE | Columbia Fireflies | — | 198 | 174 | 27 | 4 | 0 | 3 | 17 | 79 | 7 | 1 | 1 | 155 | 258 | 230 | 487 | 75 | 256 | 40 | 9 | 223 | 37 | — | — | — | — | — | — |
| 2024 | 20 | ROK MLE | ACL Royals | — | 116 | 106 | 23 | 5 | 0 | 3 | 7 | 35 | 3 | 3 | 0 | 217 | 284 | 349 | 634 | 132 | 280 | 30 | 6 | 272 | 70 | — | — | — | — | — | — |
| 2025 | 21 | A MLE | Columbia Fireflies | — | 262 | 232 | 40 | 11 | 0 | 2 | 22 | 75 | 6 | 4 | 1 | 172 | 262 | 246 | 507 | 73 | 239 | 29 | 8 | 232 | 43 | — | — | — | — | — | — |
| 2025 | 21 | ROK MLE | ACL Royals | — | 31 | 29 | 6 | 1 | 0 | 0 | 1 | 6 | 0 | 0 | 0 | 207 | 233 | 241 | 475 | 34 | 248 | 19 | 3 | 204 | 24 | — | — | — | — | — | — |
| 2026 | 22 | AA MLE | Northwest Arkansas Naturals | — | 39 | 34 | 9 | 1 | 1 | 0 | 3 | 12 | 0 | 0 | 1 | 265 | 324 | 353 | 677 | 88 | 372 | 31 | 8 | 279 | 75 | — | — | — | — | — | — |
| 2026 | 22 | A+ MLE | Quad Cities River Bandits | — | 37 | 31 | 7 | 2 | 1 | 1 | 4 | 15 | 1 | 1 | 0 | 226 | 333 | 452 | 785 | 226 | 327 | 41 | 11 | 294 | 85 | — | — | — | — | — | — |
| 2026 | 22 | A MLE | Columbia Fireflies | — | 276 | 241 | 49 | 4 | 2 | 6 | 23 | 82 | 7 | 8 | 0 | 203 | 292 | 311 | 603 | 108 | 261 | 30 | 8 | 266 | 66 | — | — | — | — | — | — |
| 2023 | 19 | INTL MLE | 2 teams | — | 181 | 163 | 25 | 4 | 0 | 2 | 14 | 66 | 1 | 2 | 0 | 153 | 225 | 215 | 439 | 61 | 235 | 36 | 8 | 203 | 24 | — | — | — | — | — | — |
| 2023 | 19 | INTL RAW | 2 teams | — | 181 | 167 | 40 | 5 | 0 | 5 | 10 | 44 | 1 | 2 | 0 | 240 | 287 | 359 | 646 | 120 | 289 | 24 | 6 | 286 | 24 | — | — | — | — | — | — |
| 2024 | 20 | A MLE | 3 teams | — | 469 | 416 | 73 | 13 | 0 | 9 | 37 | 170 | 14 | 7 | 2 | 175 | 266 | 272 | 537 | 96 | 269 | 36 | 8 | 241 | 49 | — | — | — | — | — | — |
| 2024 | 20 | A RAW | 3 teams | — | 469 | 405 | 105 | 18 | 1 | 18 | 47 | 120 | 14 | 7 | 2 | 259 | 355 | 442 | 797 | 183 | 325 | 26 | 10 | 356 | 49 | — | — | — | — | — | — |
| 2025 | 21 | A MLE | 2 teams | — | 293 | 261 | 47 | 13 | 0 | 2 | 23 | 81 | 6 | 4 | 1 | 180 | 262 | 253 | 515 | 73 | 251 | 28 | 8 | 229 | 41 | — | — | — | — | — | — |
| 2025 | 21 | A RAW | 2 teams | — | 293 | 251 | 58 | 15 | 0 | 3 | 33 | 58 | 6 | 4 | 1 | 231 | 334 | 327 | 661 | 96 | 288 | 20 | 11 | 304 | 41 | — | — | — | — | — | — |
| 2026 | 22 | A MLE | 3 teams | — | 352 | 305 | 64 | 7 | 4 | 7 | 31 | 109 | 8 | 9 | 1 | 210 | 299 | 328 | 627 | 118 | 297 | 31 | 9 | 270 | 69 | — | — | — | — | — | — |
| 2026 | 22 | A RAW | 3 teams | — | 352 | 292 | 72 | 8 | 4 | 9 | 44 | 82 | 8 | 9 | 1 | 247 | 360 | 394 | 754 | 147 | 309 | 23 | 12 | 336 | 69 | — | — | — | — | — | — |
| 2023 | 19 | INTL MLE | 2 teams | — | 181 | 164 | 25 | 4 | 0 | 2 | 14 | 66 | 1 | 2 | 0 | 152 | 225 | 213 | 438 | 61 | 217 | 36 | 8 | 203 | 24 | — | — | — | — | — | — |
| 2024 | 20 | A MLE | 3 teams | — | 469 | 415 | 73 | 13 | 0 | 9 | 37 | 170 | 14 | 7 | 2 | 176 | 266 | 272 | 538 | 96 | 265 | 36 | 8 | 241 | 49 | — | — | — | — | — | — |
| 2025 | 21 | A MLE | 2 teams | — | 293 | 262 | 47 | 13 | 0 | 2 | 23 | 81 | 6 | 4 | 1 | 179 | 262 | 252 | 514 | 73 | 240 | 28 | 8 | 229 | 41 | — | — | — | — | — | — |
| 2026 | 22 | A MLE | 3 teams | — | 352 | 310 | 64 | 7 | 4 | 7 | 31 | 109 | 8 | 9 | 1 | 206 | 299 | 323 | 622 | 116 | 280 | 31 | 9 | 270 | 69 | — | — | — | — | — | — |
| ▸ Model inputs — neutral MLE (past 3 seasons) | |||||||||||||||||||||||||||||||
| 2024 | 20 | A MLE | 3 teams | — | 469 | 415 | 73 | 13 | 0 | 9 | 37 | 170 | 14 | 7 | 2 | 176 | 266 | 272 | 538 | 96 | 265 | 36 | 8 | 241 | 49 | — | — | — | — | — | — |
| 2025 | 21 | A MLE | 2 teams | — | 293 | 262 | 47 | 13 | 0 | 2 | 23 | 81 | 6 | 4 | 1 | 179 | 262 | 252 | 514 | 73 | 240 | 28 | 8 | 229 | 41 | — | — | — | — | — | — |
| 2026 | 22 | A MLE | 3 teams | — | 352 | 310 | 64 | 7 | 4 | 7 | 31 | 109 | 8 | 9 | 1 | 206 | 299 | 323 | 622 | 116 | 280 | 31 | 9 | 270 | 69 | — | — | — | — | — | — |
| ▸ 2027 season | |||||||||||||||||||||||||||||||
| ▸ 2027 — full MLE projection (neutral park, full availability) | |||||||||||||||||||||||||||||||
| 2027 | 23 | MLB MLE | KC | 0% | 462 | 412 | 82 | 13 | 3 | 8 | 39 | 130 | 8 | 7 | 1 | 201 | 284 | 306 | 590 | 105 | 270 | 28 | 8 | 270 | 69 | -17 | +1 | +0 | +8 | +10 | 0.2 |
| ▸ Career projection (2028+) — MLB context, MLB playing time (PA × MLB%) | |||||||||||||||||||||||||||||||
| 2028 | 24 | MLB MLE | KC | 30% | 315 | 280 | 57 | 9 | 2 | 6 | 27 | 87 | 5 | 5 | 1 | 205 | 288 | 318 | 605 | 112 | 272 | 28 | 9 | 276 | 73 | -10 | +1 | +0 | +6 | +7 | 0.3 |
| 2029 | 25 | MLB MLE | KC | 44% | 361 | 321 | 66 | 11 | 2 | 7 | 31 | 99 | 6 | 5 | 1 | 208 | 290 | 324 | 615 | 116 | 273 | 27 | 9 | 280 | 75 | -11 | +1 | +0 | +6 | +8 | 0.4 |
| 2030 | 26 | MLB MLE | KC | 51% | 387 | 344 | 72 | 12 | 2 | 8 | 34 | 105 | 6 | 6 | 1 | 210 | 292 | 328 | 620 | 118 | 274 | 27 | 9 | 282 | 77 | -11 | +1 | +0 | +7 | +8 | 0.6 |
| 2031 | 27 | MLB MLE | KC | 52% | 396 | 353 | 73 | 12 | 2 | 8 | 34 | 107 | 6 | 6 | 1 | 210 | 292 | 330 | 622 | 119 | 274 | 27 | 9 | 282 | 77 | -11 | +1 | +0 | +7 | +9 | 0.6 |
| 2032 | 28 | MLB MLE | KC | 53% | 397 | 354 | 73 | 12 | 2 | 8 | 34 | 107 | 6 | 5 | 1 | 210 | 292 | 329 | 620 | 118 | 274 | 27 | 9 | 282 | 77 | -11 | +1 | -1 | +7 | +9 | 0.5 |
| 2033 | 29 | MLB MLE | KC | 53% | 388 | 346 | 72 | 12 | 2 | 8 | 33 | 106 | 6 | 4 | 1 | 208 | 289 | 322 | 611 | 114 | 272 | 27 | 9 | 278 | 74 | -12 | +0 | -1 | +7 | +8 | 0.2 |
| 2034 | 30 | MLB MLE | KC | 56% | 377 | 336 | 68 | 11 | 2 | 7 | 32 | 104 | 6 | 4 | 1 | 205 | 285 | 314 | 599 | 110 | 270 | 28 | 8 | 273 | 71 | -13 | +0 | -2 | +7 | +8 | 0.0 |
| 2028 | 24 | MLB CTX | KC | 30% | 95 | 85 | 18 | 3 | 1 | 2 | 8 | 26 | 2 | 1 | 0 | 203 | 286 | 311 | 597 | 108 | 270 | 27 | 8 | 273 | 73 | -3 | +0 | +0 | +2 | +2 | 0.1 |
| 2029 | 25 | MLB CTX | KC | 44% | 159 | 141 | 29 | 5 | 1 | 3 | 14 | 43 | 3 | 2 | 0 | 206 | 288 | 317 | 606 | 112 | 271 | 27 | 9 | 276 | 75 | -5 | +0 | +0 | +3 | +3 | 0.2 |
| 2030 | 26 | MLB CTX | KC | 51% | 196 | 174 | 36 | 6 | 1 | 4 | 17 | 53 | 3 | 3 | 1 | 207 | 290 | 321 | 611 | 114 | 272 | 27 | 9 | 278 | 77 | -5 | +0 | +0 | +4 | +4 | 0.3 |
| 2031 | 27 | MLB CTX | KC | 52% | 208 | 185 | 38 | 6 | 1 | 4 | 18 | 56 | 3 | 3 | 1 | 208 | 290 | 322 | 612 | 115 | 272 | 27 | 9 | 279 | 77 | -6 | +0 | +0 | +4 | +5 | 0.3 |
| 2032 | 28 | MLB CTX | KC | 53% | 212 | 189 | 39 | 7 | 1 | 4 | 18 | 57 | 3 | 3 | 1 | 208 | 289 | 322 | 611 | 114 | 272 | 27 | 8 | 278 | 77 | -6 | +0 | -0 | +4 | +5 | 0.2 |
| 2033 | 29 | MLB CTX | KC | 53% | 204 | 181 | 37 | 6 | 1 | 4 | 18 | 56 | 3 | 2 | 1 | 205 | 287 | 315 | 602 | 110 | 270 | 27 | 9 | 274 | 74 | -6 | +0 | -1 | +4 | +4 | 0.1 |
| 2034 | 30 | MLB CTX | KC | 56% | 213 | 190 | 38 | 6 | 1 | 4 | 18 | 59 | 3 | 2 | 1 | 202 | 283 | 308 | 591 | 105 | 268 | 28 | 8 | 270 | 71 | -7 | +0 | -1 | +4 | +5 | -0.0 |
| ▸ Career Totals | |||||||||||||||||||||||||||||||
| ▸ Career totals — MLB only (actual + projected) | |||||||||||||||||||||||||||||||
| Career | — | A+C | — | 1287 | 1145 | 235 | 39 | 7 | 25 | 111 | 350 | 20 | 16 | 5 | 205 | 287 | 317 | 604 | 112 | 271 | 27 | 9 | 276 | 67 | -38 | +1 | -2 | +23 | +28 | 1.2 | |
| / 162G | — | A+C | — | 650 | 578 | 120 | 20 | 4 | 13 | 56 | 177 | 10 | 8 | 3 | 208 | 289 | 324 | 612 | 116 | 274 | 27 | 9 | 276 | 67 | -19 | +1 | -1 | +12 | +14 | 0.6 | |
| Career | — | MLE | — | 4126 | 3665 | 728 | 122 | 19 | 76 | 348 | 1200 | 74 | 60 | 12 | 199 | 281 | 305 | 586 | 106 | 270 | 29 | 8 | 267 | 67 | -86 | +4 | -4 | +51 | +61 | 2.7 | |
| / 162G | — | MLE | — | 650 | 577 | 115 | 19 | 3 | 12 | 55 | 189 | 12 | 9 | 2 | 199 | 283 | 305 | 588 | 106 | 271 | 29 | 8 | 267 | 67 | -20 | +1 | -1 | +12 | +14 | 0.6 | |
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 AColumbia Fireflies · 276 PAwOBA .330 → .266 (−64)K% 21.7% → 29.6%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 21.74% | ÷1.000 | ×1.360 | — | — | 29.57% |
| BB% (unintentional) /PA | 12.32% | ÷1.000 | ×0.690 | — | — | 8.50% |
| HBP% /PA | 2.54% | — | ×0.780 | — | — | 1.98% |
| Singles /BIP | 24.12% | ÷1.000 | ×0.920 | ×0.994 | — | 22.06% |
| Doubles /BIP | 2.94% | ÷1.000 | ×0.830 | ×0.994 | — | 2.43% |
| Triples /BIP | 1.18% | ÷1.000 | ×0.910 | ×0.994 | — | 1.06% |
| Home runs /BIP | 4.71% | ÷1.000 | ×0.800 | — | — | 3.76% |
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 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 ×0.994.
Result: wOBA .330 → .266; ISO .143 → .114; BABIP .291 → .261. 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 AANorthwest Arkansas Naturals · 39 PAwOBA .301 → .279 (−22)K% 25.6% → 31.3%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 25.64% | ÷1.000 | ×1.220 | — | — | 31.28% |
| BB% (unintentional) /PA | 10.26% | ÷1.000 | ×0.700 | — | ×1.042 | 7.48% |
| HBP% /PA | 0.00% | — | ×0.870 | — | ×1.042 | 0.00% |
| Singles /BIP | 30.43% | ÷1.000 | ×0.920 | — | ×1.042 | 29.18% |
| Doubles /BIP | 4.35% | ÷1.000 | ×0.840 | — | ×1.042 | 3.81% |
| Triples /BIP | 4.35% | ÷1.000 | ×0.940 | — | ×1.042 | 4.26% |
| Home runs /BIP | 0.00% | ÷1.000 | ×0.800 | — | ×1.042 | 0.00% |
Factors used: league row TL. 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 24.8 → +4.2% on BB/HBP/hit rates (2.8 yr younger than average).
Result: wOBA .301 → .279; ISO .091 → .089; BABIP .391 → .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).
2026 A+Quad Cities River Bandits · 37 PAwOBA .367 → .294 (−73)K% 32.4% → 41.2%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 32.43% | ÷1.000 | ×1.270 | — | — | 41.19% |
| BB% (unintentional) /PA | 16.22% | ÷1.000 | ×0.710 | — | ×1.012 | 11.65% |
| HBP% /PA | 2.70% | — | ×0.790 | — | ×1.012 | 2.16% |
| Singles /BIP | 17.65% | ÷1.000 | ×0.920 | — | ×1.012 | 16.43% |
| Doubles /BIP | 11.76% | ÷1.000 | ×0.810 | — | ×1.012 | 9.64% |
| Triples /BIP | 5.88% | ÷1.000 | ×0.850 | — | ×1.012 | 5.06% |
| Home runs /BIP | 5.88% | ÷1.000 | ×0.800 | — | ×1.012 | 4.76% |
Factors used: league row Midwest League. 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 22.8 → +1.2% on BB/HBP/hit rates (0.8 yr younger than average).
Result: wOBA .367 → .294; ISO .241 → .195; BABIP .375 → .327. 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 AColumbia Fireflies · 262 PAwOBA .301 → .232 (−69)K% 20.6% → 28.5%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 20.61% | ÷0.982 | ×1.360 | — | — | 28.54% |
| BB% (unintentional) /PA | 12.21% | ÷1.006 | ×0.690 | — | ×1.015 | 8.50% |
| HBP% /PA | 2.29% | — | ×0.780 | — | ×1.015 | 1.81% |
| Singles /BIP | 20.24% | ÷1.099 | ×0.920 | ×0.974 | ×1.015 | 16.76% |
| Doubles /BIP | 7.74% | ÷0.913 | ×0.830 | ×0.974 | ×1.015 | 6.96% |
| Triples /BIP | 0.00% | ÷0.937 | ×0.910 | ×0.974 | ×1.015 | 0.00% |
| Home runs /BIP | 1.79% | ÷1.086 | ×0.800 | — | ×1.015 | 1.34% |
Factors used: level-wide A factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 117, 1B 120, 2B 83, 3B 87, K 96, BB 101 — 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). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.974.
Result: wOBA .301 → .232; ISO .099 → .079; BABIP .283 → .239. 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 Royals · 31 PAwOBA .273 → .204 (−69)K% 12.9% → 18.9%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 12.90% | ÷0.985 | ×1.440 | — | — | 18.87% |
| BB% (unintentional) /PA | 3.23% | ÷0.971 | ×0.620 | — | ×0.985 | 2.03% |
| HBP% /PA | 0.00% | — | ×0.720 | — | ×0.985 | 0.00% |
| Singles /BIP | 24.00% | ÷1.019 | ×0.820 | — | ×0.985 | 19.02% |
| Doubles /BIP | 8.00% | ÷0.975 | ×0.720 | — | ×0.985 | 5.82% |
| Triples /BIP | 0.00% | ÷1.070 | ×0.720 | — | ×0.985 | 0.00% |
| Home runs /BIP | 0.00% | ÷0.939 | ×0.780 | — | ×0.985 | 0.00% |
Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 88, 1B 104, 2B 95, 3B 114, K 97, BB 94 — 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).
Result: wOBA .273 → .204; ISO .069 → .049; BABIP .320 → .248. 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 AColumbia Fireflies · 198 PAwOBA .296 → .223 (−73)K% 28.3% → 39.9%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 28.28% | ÷0.964 | ×1.360 | — | — | 39.92% |
| BB% (unintentional) /PA | 12.63% | ÷1.028 | ×0.690 | — | ×1.030 | 8.73% |
| HBP% /PA | 3.54% | — | ×0.780 | — | ×1.030 | 2.84% |
| Singles /BIP | 22.73% | ÷1.037 | ×0.920 | ×0.998 | ×1.030 | 20.73% |
| Doubles /BIP | 4.55% | ÷0.935 | ×0.830 | ×0.998 | ×1.030 | 4.15% |
| Triples /BIP | 0.00% | ÷1.008 | ×0.910 | ×0.998 | ×1.030 | 0.00% |
| Home runs /BIP | 3.64% | ÷1.020 | ×0.800 | — | ×1.030 | 2.94% |
Factors used: level-wide A factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 104, 1B 107, 2B 87, 3B 102, K 93, BB 106 — 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 ×0.998.
Result: wOBA .296 → .223; ISO .102 → .075; BABIP .283 → .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).
2024 ROKACL Royals · 116 PAwOBA .386 → .272 (−114)K% 21.6% → 29.9%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 21.55% | ÷1.036 | ×1.440 | — | — | 29.94% |
| BB% (unintentional) /PA | 10.34% | ÷1.010 | ×0.620 | — | ×0.995 | 6.32% |
| HBP% /PA | 2.59% | — | ×0.720 | — | ×0.995 | 1.85% |
| Singles /BIP | 26.67% | ÷1.029 | ×0.820 | ×0.960 | ×0.995 | 20.30% |
| Doubles /BIP | 9.33% | ÷0.986 | ×0.720 | ×0.960 | ×0.995 | 6.51% |
| Triples /BIP | 0.00% | ÷0.979 | ×0.720 | ×0.960 | ×0.995 | 0.00% |
| Home runs /BIP | 5.33% | ÷0.949 | ×0.780 | — | ×0.995 | 4.36% |
Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 90, 1B 106, 2B 97, 3B 96, K 107, BB 102 — 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 ×0.960.
Result: wOBA .386 → .272; ISO .190 → .141; BABIP .380 → .280. 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 ROKACL Royals · 59 PAwOBA .287 → .203 (−84)K% 25.4% → 36.6%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 25.42% | ÷1.000 | ×1.440 | — | — | 36.62% |
| BB% (unintentional) /PA | 11.86% | ÷0.982 | ×0.620 | — | ×1.008 | 7.54% |
| HBP% /PA | 0.00% | — | ×0.720 | — | ×1.008 | 0.00% |
| Singles /BIP | 22.86% | ÷1.029 | ×0.820 | — | ×1.008 | 18.35% |
| Doubles /BIP | 5.71% | ÷1.000 | ×0.720 | — | ×1.008 | 4.14% |
| Triples /BIP | 0.00% | ÷0.932 | ×0.720 | — | ×1.008 | 0.00% |
| Home runs /BIP | 2.86% | ÷1.000 | ×0.780 | — | ×1.008 | 2.25% |
Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 100, 1B 106, 2B 100, 3B 86, K 100, BB 96 — 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).
Result: wOBA .287 → .203; ISO .100 → .072; BABIP .278 → .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).
Not traceable per stint: some stints lack the counting stats the component translation needs. Level-wide factors that apply instead — .