Mike Yastrzemski

LF Atlanta Braves
Age 36 L/L 5'10" / 180 lbs MLB Svc 7.744 · Ctrl thru 2027
Overview
MLB40-MANExtFA 2028
YearAgeLvl / TeamPAAVG/OBP/SLGHRSBwRC+WAR
202433MLBSF474.231/.303/.4371831110.8
202534MLBKC558.233/.336/.4031771091.2
202635MLBATL408.224/.310/.380121960.3
2027PROJ36MLBATL256.234/.322/.409921060.5
2028PROJ37MLBATL174.221/.307/.3805094-0.6
Last 3 seasons WAR 2.3  ·  Next 2 projected WAR -0.1Projected rows: MLB playing time only, park and league context applied.
ContractESTIMATED
Control thru2027Service7.744First FA2028Options2
2027Ext$12M
Skills · percentileStatcast 2024-2026
Avg EV71
xwOBA56
Barrel%53
Bat Spd43
Speed42
Form.236/.319/.410 · rolling true talent (60d window) · proj .233/.319/.409
CompsChris Richard (age 36) · Kevin Barker (age 36) · Yadiel Hernandez (age 34)
2027 FULL-SEASON PROJECTIONstats below = full-season projection
showingPROJ
wRC+†vL 70106vR 119
AVG/OBP/SLG.234 / .322 / .409
PA256
HR9
K%22
BB%11
BABIP273
ISO178
MLB%100%
Value2027 · WAR
BAT: +1.9 runs (wOBA-derived runs vs avg)+2BATRUN: +0.1 runs (SB/CS + UBR baserunning)+0RUNFLD: +0.6 runs (Defensive runs vs avg)+1FLDPOS: -2.7 runs (Positional adjustment)-3POSREP: +5.5 runs (Replacement-level credit)+6REPTotal WAR: +0.40+0.4WAR
trajectory · projected WAR by year
0.4-0.62728
Tools · Recent Form · Splits · Contract
ToolsStatcast %ile · 2024-2026
CONTACT
xAVG
240.230
POWER
Barrel%
538.7
Avg EV
7190.6
Bat Spd
4370.5
SPEED
Sprint
4227.1
Recent Formrolling true talent ⓘ
K%22%▲21% over 71 PA (60d) · proj 22%
BB%10%·10% over 71 PA (60d) · proj 11%
ISO.175·.172 over 64 AB (60d) · proj .176
HR/BB5.4%·6.1% over 49 BBE (60d) · proj 5.0%
BABIP.270·.217 over 46 BIP (60d) · proj .273
SLASH.236/.319/.410·proj .233/.319/.409
Platoon Splits2024-2026 · 1106 PA
vs LHP
vs RHP
Edge
PA
199
907
—
wRC+
53
113
▶▶R
wOBA
247
335
▶▶R
ISO
096
197
▶▶R
BABIP
252
279
▶R
K%
26.1%
21.8%
▶▶R
BB%
7.0%
10.8%
▶▶R
Contract ESTIMATED · service-time + WAR-based estimator (needs verification)
Status   FA
MLB Debut   2019
Service   7.744 yrs.days
Team Control Through   2027
First FA Year   2028
OPT
YearStatusSalary Proj WAR Value Surplus
2027Ext$12M+0.4$2M-$10M
Totals $12M $2M -$10M
Options · projected decision
2028CLUB OPT$11.5M / $0.0M buyoutDECLINE
2029CLUB OPT$7.0M / $4.0M buyoutDECLINE

Career Stats + Projections

Real MLB stats plus park-adjusted projections — this season (so far / rest / full), then future seasons and career totals.
basis chips: RAW = as recorded · CTX = with park/league context · A+C = actual + context combined · MLE = level/park-neutral
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.

YearAge LvlTeam MLB% PAAB H2B3BHR BBSOHBP SBCS AVGOBPSLGOPS ISOBABIP K%BB% wOBAwRC+ BATRUNFLDPOSREP WAR
▸ Career — actual stats, one row per stint (as recorded, no adjustments)
201423 AABowie Baysox — 201184 461343 14342 12 250310413723 163293 177 319 79 — — — — — —
201423 A+Frederick Keys — 10793 29721 8162 50 312379462841 151350 157 360 97 — — — — — —
201423 ADelmarva Shorebirds — 288258 79141010 19646 124 306365554919 248371 227 393 93 — — — — — —
201524 AABowie Baysox — 536476 1173066 431009 87 246320372692 126294 198 308 57 — — — — — —
201524 INTLPeoria Javelinas — 6753 11201 11141 00 208354302656 94250 2116 303 91 — — — — — —
201625 AAANorfolk Tides — 385339 752147 42983 103 221312369681 147289 2511 308 53 — — — — — —
201625 AABowie Baysox — 147127 34506 19200 40 268363449812 181275 1413 360 78 — — — — — —
201726 AAANorfolk Tides — 307271 651539 31743 21 240325417742 177295 2410 329 68 — — — — — —
201726 AABowie Baysox — 9483 32616 9170 11 3864466991.144 313419 1810 482 150 — — — — — —
201827 AAANorfolk Tides — 374324 861869 44754 64 265360441802 176320 2012 356 77 — — — — — —
201827 AABowie Baysox — 117104 211001 10301 21 202278327605 125270 269 271 27 — — — — — —
201928 MLBSan Francisco Giants — 411371 10122321 321074 24 272337518854 245325 268 369 142 +21 -1 +2 -6 +9 2.4
201928 AAASacramento River Cats — 163136 4311112 22362 22 3164196761.095 360344 2213 458 118 — — — — — —
202029 MLBSan Francisco Giants — 225192 5714410 30553 21 297400568968 271370 2413 421 173 +20 +0 -5 -2 +5 1.7
202130 MLBSan Francisco Giants — 532468 10528325 511319 40 224312457770 233254 2510 337 117 +11 +1 -1 -6 +12 1.7
202231 MLBSan Francisco Giants — 558485 10431217 611415 51 214309392700 177261 2511 311 101 +1 +1 -2 +2 +12 1.3
202332 MLBSan Francisco Giants — 381330 7723115 45993 22 233331445776 212286 2612 342 119 +9 -0 +0 +1 +8 1.9
202433 MLBSan Francisco Giants — 474428 9916918 381246 32 231303437740 206282 268 325 111 +6 -0 -3 -5 +10 0.8
202534 MLBKansas City Royals — 558477 11128117 721082 72 233336403738 170263 1913 329 109 +6 +1 -2 -6 +12 1.2
202635 MLBAtlanta Braves — 408361 8118112 41984 10 224310380690 155273 2410 310 96 -2 +0 +0 -4 +9 0.3
▸ Career Totals (raw MLB only — historical actual)
MLB Career— — 35473112 73518024135 37086336 2612 236324440764 203281 2410 337 114 +59 +0 -10 -26 +77 10.1
▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents)
201423 AA MLEBowie Baysox — 201189 451243 9422 12 238280392672 153292 214 285 79 — — — — — —
201423 A+ MLEFrederick Keys — 10796 27621 5232 50 281330417747 135316 215 312 97 — — — — — —
201423 A MLEDelmarva Shorebirds — 288267 661288 12886 124 247295442737 195320 314 305 93 — — — — — —
201524 AA MLEBowie Baysox — 536490 1032554 291239 87 210267306573 96262 235 252 57 — — — — — —
201625 AAA MLENorfolk Tides — 385354 641638 271203 103 181245311556 130249 317 247 53 — — — — — —
201625 AA MLEBowie Baysox — 147135 31405 11250 40 230288370658 141241 177 284 78 — — — — — —
201726 AAA MLENorfolk Tides — 307280 561229 22893 21 200266354619 154254 297 269 68 — — — — — —
201726 AA MLEBowie Baysox — 9486 29515 6210 11 337380593973 256359 226 390 150 — — — — — —
201827 AAA MLENorfolk Tides — 374340 741358 28894 64 218285356641 138269 247 282 77 — — — — — —
201827 AA MLEBowie Baysox — 117109 18801 5381 21 165209266475 101234 324 208 27 — — — — — —
201928 MLB MLESan Francisco Giants — 411372 10422323 311074 24 280342540882 261325 268 378 142 +21 -1 +2 -6 +9 2.4
201928 AAA MLESacramento River Cats — 163143 34819 15482 22 238319497815 259274 299 343 118 — — — — — —
202029 MLB MLESan Francisco Giants — 225194 5814411 28553 21 299396582978 284370 2412 424 173 +20 +0 -5 -2 +5 1.7
202130 MLB MLESan Francisco Giants — 532472 10828327 471319 40 229311472783 244254 259 341 117 +11 +1 -1 -6 +12 1.7
202231 MLB MLESan Francisco Giants — 558485 10631218 611415 51 219312402714 184261 2511 317 101 +1 +1 -2 +2 +12 1.3
202332 MLB MLESan Francisco Giants — 381333 7923116 42993 22 237328456784 219286 2611 344 119 +9 -0 +0 +1 +8 1.9
202433 MLB MLESan Francisco Giants — 474429 10116919 371246 32 235305448753 212282 268 332 111 +6 -0 -3 -5 +10 0.8
202534 MLB MLEKansas City Royals — 558481 11228118 681082 72 233330407738 175263 1912 330 109 +6 +1 -2 -6 +12 1.2
202635 MLB MLEAtlanta Braves — 408361 8118112 41984 10 224310380690 155273 2410 310 96 -2 +0 +0 -4 +9 0.3
201423 A MLE3 teams — 596552 136291411 2615310 186 246293409702 163317 264 300 89 — — — — — —
201423 A RAW3 teams — 596535 154341614 4111410 186 288349490838 202339 197 362 89 — — — — — —
201524 AA MLE2 teams — 603550 1162864 3313910 87 211268305574 95269 235 252 57 — — — — — —
201524 AA RAW2 teams — 603529 1283267 5411410 87 242324365689 123290 199 308 57 — — — — — —
201625 AAA MLE2 teams — 532489 9420312 381453 143 192255319574 127246 277 257 60 — — — — — —
201625 AAA RAW2 teams — 532466 10926413 611183 143 234326391717 157285 2211 322 60 — — — — — —
201726 AAA MLE2 teams — 401366 8316313 281113 32 227287393681 167285 287 297 87 — — — — — —
201726 AAA RAW2 teams — 401354 9721415 40913 32 274353483836 209325 2310 365 87 — — — — — —
201827 AAA MLE2 teams — 491448 932259 341275 85 208271339610 132268 267 264 65 — — — — — —
201827 AAA RAW2 teams — 491428 10728610 541055 85 250341414754 164308 2111 336 65 — — — — — —
201928 MLB MLE2 teams — 574515 13830432 461556 46 268335528863 260318 278 368 135 +24 -2 +2 -6 +12 3.1
201928 MLB RAW2 teams — 574507 14433433 541436 46 284360560920 276330 259 395 135 +24 -2 +2 -6 +12 3.1
202029 MLB MLESan Francisco Giants — 225194 5814411 28553 21 299396582978 284367 2412 424 173 +20 +0 -5 -2 +5 1.7
202029 MLB RAWSan Francisco Giants — 225192 5714410 30553 21 297400568968 271370 2413 421 173 +20 +0 -5 -2 +5 1.7
202130 MLB MLESan Francisco Giants — 532472 10828327 471319 40 229311472783 244256 259 341 117 +11 +1 -1 -6 +12 1.7
202130 MLB RAWSan Francisco Giants — 532468 10528325 511319 40 224312457770 233254 2510 337 117 +11 +1 -1 -6 +12 1.7
202231 MLB MLESan Francisco Giants — 558485 10631218 611415 51 219312402714 184265 2511 317 101 +1 +1 -2 +2 +12 1.3
202231 MLB RAWSan Francisco Giants — 558485 10431217 611415 51 214309392700 177261 2511 311 101 +1 +1 -2 +2 +12 1.3
202332 MLB MLESan Francisco Giants — 381333 7923116 42993 22 237328456784 219288 2611 344 119 +9 -0 +0 +1 +8 1.9
202332 MLB RAWSan Francisco Giants — 381330 7723115 45993 22 233331445776 212286 2612 342 119 +9 -0 +0 +1 +8 1.9
202433 MLB MLESan Francisco Giants — 474429 10116919 371246 32 235305448753 212286 268 332 111 +6 -0 -3 -5 +10 0.8
202433 MLB RAWSan Francisco Giants — 474428 9916918 381246 32 231303437740 206282 268 325 111 +6 -0 -3 -5 +10 0.8
202534 MLB MLEKansas City Royals — 558481 11228118 681082 72 233330407738 175261 1912 330 109 +6 +1 -2 -6 +12 1.2
202534 MLB RAWKansas City Royals — 558477 11128117 721082 72 233336403738 170263 1913 329 109 +6 +1 -2 -6 +12 1.2
202635 MLB MLEAtlanta Braves — 408361 8118112 41984 10 224310380690 155273 2410 310 96 -2 +0 +0 -4 +9 0.3
202635 MLB RAWAtlanta Braves — 408361 8118112 41984 10 224310380690 155273 2410 310 96 -2 +0 +0 -4 +9 0.3
201423 A MLE3 teams — 596555 136291411 2615310 186 245293407700 162310 264 300 89 — — — — — —
201524 AA MLE2 teams — 603555 1162864 3313910 87 209268303571 94262 235 252 57 — — — — — —
201625 AAA MLE2 teams — 532486 9420312 381453 143 193255321576 128247 277 257 60 — — — — — —
201726 AAA MLE2 teams — 401367 8316313 281113 32 226287392680 166279 287 297 87 — — — — — —
201827 AAA MLE2 teams — 491449 932259 341275 85 207271339610 131261 267 264 65 — — — — — —
201928 MLB MLE2 teams — 574517 13830432 461556 46 267335526861 259311 278 368 135 — — — — — —
202029 MLB MLESan Francisco Giants — 225192 5814411 28553 21 302396589984 286370 2412 424 173 — — — — — —
202130 MLB MLESan Francisco Giants — 532471 10828327 471319 40 229311473784 244254 259 341 117 — — — — — —
202231 MLB MLESan Francisco Giants — 558487 10631218 611415 51 218312400713 183261 2511 317 101 — — — — — —
202332 MLB MLESan Francisco Giants — 381333 7923116 42993 22 237328456784 219286 2611 344 119 — — — — — —
202433 MLB MLESan Francisco Giants — 474428 10116919 371246 32 236305449754 213282 268 332 111 — — — — — —
202534 MLB MLEKansas City Royals — 558483 11228118 681082 72 232330406736 174263 1912 330 109 — — — — — —
202635 MLB MLEAtlanta Braves — 408360 8118112 41984 10 225310381691 156273 2410 310 96 — — — — — —
▸ Model inputs — neutral MLE (past 3 seasons)
202433 MLB MLESan Francisco Giants — 474428 10116919 371246 32 236305449754 213282 268 332 111 — — — — — —
202534 MLB MLEKansas City Royals — 558483 11228118 681082 72 232330406736 174263 1912 330 109 — — — — — —
202635 MLB MLEAtlanta Braves — 408360 8118112 41984 10 225310381691 156273 2410 310 96 — — — — — —
▸ 2027 season
▸ 2027 — full MLE projection (neutral park, full availability)
202736 MLB MLEATL 100% 367322 7516212 39823 41 234322409731 176273 2211 325 106 +3 +0 +1 -4 +8 0.4
▸ 2027 — real world (MLB)
202736 MLB CTXATL 100% 256225 521119 27572 21 234322409731 176273 2211 325 106 +2 +0 +1 -3 +6 0.5
▸ Career projection (2028+) — MLB context, MLB playing time (PA × MLB%)
202837 MLB MLEATL 100% 174153 34715 18401 00 221307380687 159261 2310 308 94 -1 +0 -7 -2 +4 -0.6
202837 MLB CTXATL 100% 174153 34715 18401 00 221307380687 159261 2310 308 94 -1 +0 -7 -2 +4 -0.6
▸ Career Totals
▸ Career totals — MLB only (actual + projected)
Career— A+C — 37213265 76918725140 38890337 2612 236324437760 201280 2410 335 98 +58 +0 -17 -28 +81 9.5
/ 162G— A+C — 650570 13433424 681586 52 235323433756 198281 2410 335 98 +10 +0 -3 -5 +14 1.7
Career— MLE — 67636053 139132158216 574168372 8138 230304409713 179280 258 313 98 +59 +0 -16 -31 +86 10.1
/ 162G— MLE — 650582 13531621 551627 84 232306414720 182282 258 313 98 +10 +0 -3 -5 +14 1.6

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.

2019 AAASacramento River Cats · 163 PAwOBA .450 → .343 (−107)K% 22.1% → 29.3%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA22.09%÷0.971×1.290——29.33%
BB% (unintentional) /PA12.88%÷0.980×0.710—×0.9829.16%
HBP% /PA1.23%—×0.980—×0.9821.18%
Singles /BIP19.00%÷0.982×0.900×0.950×0.98216.24%
Doubles /BIP11.00%÷0.981×0.810×0.950×0.9828.48%
Triples /BIP1.00%÷1.008×0.810×0.950×0.9820.75%
Home runs /BIP12.00%÷1.027×0.780—×0.9828.95%

Factors used: league row PCL. Park (home-season share, regressed): HR 105, 1B 96, 2B 96, 3B 102, K 94, BB 96 — 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). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.950.

Result: wOBA .450 → .343; ISO .360 → .266; BABIP .344 → .274. 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 AAANorfolk Tides · 374 PAwOBA .345 → .282 (−63)K% 20.1% → 23.8%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA20.05%÷1.009×1.200——23.85%
BB% (unintentional) /PA10.96%÷0.997×0.690—×0.9927.53%
HBP% /PA1.07%—×0.940—×0.9921.00%
Singles /BIP21.29%÷0.984×0.930×0.950×0.99218.96%
Doubles /BIP7.23%÷1.063×0.830×0.950×0.9925.32%
Triples /BIP2.41%÷1.150×0.970×0.950×0.9921.92%
Home runs /BIP3.61%÷0.964×0.840—×0.9923.12%

Factors used: league row IL. Park (home-season share, regressed): HR 93, 1B 97, 2B 113, 3B 130, K 102, BB 99 — 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 ×0.950.

Result: wOBA .345 → .282; ISO .176 → .145; BABIP .320 → .269. 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 AABowie Baysox · 117 PAwOBA .259 → .208 (−50)K% 25.6% → 32.6%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA25.64%÷0.960×1.220——32.59%
BB% (unintentional) /PA6.84%÷0.978×0.700—×0.9684.74%
HBP% /PA0.85%—×0.850—×0.9680.70%
Singles /BIP13.51%÷0.996×0.970×0.966×0.96812.30%
Doubles /BIP13.51%÷0.971×0.860×0.966×0.96811.19%
Triples /BIP0.00%÷0.900×0.950×0.966×0.9680.00%
Home runs /BIP1.35%÷1.060×0.780—×0.9680.96%

Factors used: league row EL. Park (home-season share, regressed): HR 112, 1B 99, 2B 94, 3B 80, K 92, BB 96 — applied at half strength. Age: age 28 vs a level average of 24.8 → −3.2% on BB/HBP/hit rates (3.2 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.966.

Result: wOBA .259 → .208; ISO .125 → .098; BABIP .270 → .234. 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 AAANorfolk Tides · 307 PAwOBA .321 → .269 (−52)K% 24.1% → 29.1%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA24.10%÷0.995×1.200——29.08%
BB% (unintentional) /PA9.77%÷0.948×0.690—×1.0037.13%
HBP% /PA0.98%—×0.940—×1.0030.92%
Singles /BIP19.29%÷0.989×0.930×0.950×1.00317.28%
Doubles /BIP7.61%÷1.001×0.830×0.950×1.0036.02%
Triples /BIP1.52%÷1.150×0.970×0.950×1.0031.22%
Home runs /BIP4.57%÷0.866×0.840—×1.0034.44%

Factors used: league row IL. Park (home-season share, regressed): HR 73, 1B 98, 2B 100, 3B 130, K 99, BB 90 — 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 ×0.950.

Result: wOBA .321 → .269; ISO .177 → .155; BABIP .295 → .254. 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 AABowie Baysox · 94 PAwOBA .478 → .390 (−88)K% 18.1% → 22.7%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA18.09%÷0.970×1.220——22.75%
BB% (unintentional) /PA9.57%÷1.061×0.700—×0.9786.18%
HBP% /PA0.00%—×0.850—×0.9780.00%
Singles /BIP28.79%÷0.993×0.970×0.953×0.97826.20%
Doubles /BIP9.09%÷1.043×0.860×0.953×0.9786.98%
Triples /BIP1.52%÷1.016×0.950×0.953×0.9781.32%
Home runs /BIP9.09%÷0.998×0.780—×0.9786.95%

Factors used: league row EL. Park (home-season share, regressed): HR 100, 1B 99, 2B 109, 3B 103, K 94, BB 112 — applied at half strength. Age: age 27 vs a level average of 24.8 → −2.2% on BB/HBP/hit rates (2.2 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.953.

Result: wOBA .478 → .390; ISO .313 → .245; BABIP .419 → .359. 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 AAANorfolk Tides · 385 PAwOBA .299 → .247 (−52)K% 25.5% → 31.1%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA25.45%÷0.983×1.200——31.06%
BB% (unintentional) /PA10.39%÷1.046×0.690—×1.0186.98%
HBP% /PA0.78%—×0.940—×1.0180.75%
Singles /BIP17.84%÷1.027×0.930×0.966×1.01815.90%
Doubles /BIP8.71%÷1.021×0.830×0.966×1.0186.97%
Triples /BIP1.66%÷1.150×0.970×0.966×1.0181.38%
Home runs /BIP2.90%÷0.776×0.840—×1.0183.20%

Factors used: league row IL. Park (home-season share, regressed): HR 55, 1B 105, 2B 104, 3B 130, K 97, BB 109 — 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 ×0.966.

Result: wOBA .299 → .247; ISO .147 → .134; BABIP .289 → .249. 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 AABowie Baysox · 147 PAwOBA .351 → .284 (−67)K% 13.6% → 16.9%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA13.61%÷0.984×1.220——16.86%
BB% (unintentional) /PA12.24%÷1.084×0.700—×0.9887.81%
HBP% /PA0.00%—×0.850—×0.9880.00%
Singles /BIP21.50%÷0.992×0.970×0.950×0.98819.73%
Doubles /BIP4.67%÷1.053×0.860×0.950×0.9883.58%
Triples /BIP0.00%÷0.900×0.950×0.950×0.9880.00%
Home runs /BIP5.61%÷1.057×0.780—×0.9884.09%

Factors used: league row EL. Park (home-season share, regressed): HR 111, 1B 98, 2B 111, 3B 80, K 97, BB 117 — 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 ×0.950.

Result: wOBA .351 → .284; ISO .181 → .138; BABIP .275 → .241. 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 AABowie Baysox · 536 PAwOBA .304 → .252 (−52)K% 18.7% → 23.0%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA18.66%÷0.989×1.220——23.02%
BB% (unintentional) /PA8.02%÷1.014×0.700—×0.9985.52%
HBP% /PA1.68%—×0.850—×0.9981.42%
Singles /BIP19.95%÷1.023×0.970×0.975×0.99818.40%
Doubles /BIP7.98%÷0.999×0.860×0.975×0.9986.68%
Triples /BIP1.60%÷1.123×0.950×0.975×0.9981.31%
Home runs /BIP1.60%÷1.197×0.780—×0.9981.04%

Factors used: league row EL. Park (home-season share, regressed): HR 139, 1B 105, 2B 100, 3B 125, K 98, BB 103 — 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 ×0.975.

Result: wOBA .304 → .252; ISO .126 → .098; BABIP .294 → .262. 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).