René Rivera

PosC
B/TR/R
Born1983-07-31
Age (2027)44
No MLB projection yet. Career stats below are historical.
Overview
MLBLAST SEASON 2021
YearAgeLvl / TeamPAAVG/OBP/SLGHRSBwRC+WARMLE AVG/OBP/SLG
201835A+SEA25.286/.400/.57120116—.227/.320/.500
201835MLBATL91.233/.275/.41940930.8
201936AAANYM396.254/.322/.50125069—.192/.246/.381
201936MLBNYM20.235/.350/.412101220.8
202138INTLCangrejeros d…38.235/.316/.2940078—
202138MLBWSH78.232/.293/.36220780.2
202239No MLB games played
202340No MLB games played
202441No MLB games played
202542No MLB games played
202643No MLB games played
Last 3 seasons WAR 1.8
Contract
No contract data on file.

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. 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.

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)
200522 MLBSeattle Mariners — 5048 19301 1110 00 396408521929 125500 222 404 160 +4 +0 +1 +6 +1 1.2
200522 AAATacoma Rainiers — 5149 10301 2120 01 204235327562 122250 244 250 19 — — — — — —
200522 AASan Antonio Missions — 221212 591412 7351 10 278305382687 104326 163 305 68 — — — — — —
200623 MLBSeattle Mariners — 10699 15402 3291 10 152184253437 101191 273 191 16 -11 +0 +2 +2 +2 -0.4
200724 AAWest Tenn Diamond Jaxx — 356323 691605 24864 12 214276310586 96274 247 264 38 — — — — — —
200825 AAALas Vegas 51s — 131118 32704 11201 01 271338432771 161295 158 341 83 — — — — — —
200825 AAJacksonville Suns — 148134 31505 11321 00 231295381675 149265 227 299 52 — — — — — —
200926 AAABuffalo Bisons — 258239 561409 12662 00 234277406683 172280 265 296 55 — — — — — —
201027 AAAScranton/Wilkes-Barre Yankees — 7068 17302 1170 00 250261382643 132300 241 280 41 — — — — — —
201027 AATrenton Thunder — 10394 301005 7171 00 319373585958 266342 177 412 131 — — — — — —
201027 INTLPuerto Rico — 119105 19302 10282 00 181265267532 86224 248 245 52 — — — — — —
201128 MLBMinnesota Twins — 114104 15301 8321 00 144212202414 58194 287 195 18 -11 +0 +6 +7 +2 0.4
201128 AAARochester Red Wings — 166149 401205 11272 00 268327450777 181297 167 336 74 — — — — — —
201128 INTLPuerto Rico — 9790 19310 3251 01 211245267511 56288 263 225 39 — — — — — —
201229 AAARochester Red Wings — 326288 6514110 30624 01 226307385693 160255 199 308 56 — — — — — —
201229 INTLGigantes del Cibao — 5346 6102 4141 00 130216283498 152129 268 221 35 — — — — — —
201330 MLBSan Diego Padres — 7167 17310 2160 00 254275328604 75321 233 262 61 -3 +0 +11 +8 +2 1.7
201330 AAATucson Padres — 276251 861805 17422 02 343389474863 131388 156 376 94 — — — — — —
201330 INTLLeones de Ponce — 8982 14201 4211 00 171218232450 61213 244 204 24 — — — — — —
201431 MLBSan Diego Padres — 329294 7418111 27763 00 252321432753 180301 238 330 108 +3 +0 +32 +8 +7 5.1
201431 INTLPuerto Rico — 112107 28902 4191 11 262295402697 140302 174 309 95 — — — — — —
201532 MLBTampa Bay Rays — 319298 531405 11863 00 178215275490 97230 273 216 33 -26 +0 +13 +8 +7 0.2
201532 INTLCangrejeros de Santurce — 10392 17400 8261 00 185257228486 43250 258 225 39 — — — — — —
201633 MLBNew York Mets — 207185 41406 16543 00 222294341635 119276 268 285 76 -6 +0 +13 +4 +4 1.6
201633 AAALas Vegas 51s — 2925 7100 231 00 280357320677 40318 107 305 53 — — — — — —
201734 MLBChicago Cubs — 237218 559010 14703 01 252306431738 179324 306 325 101 +0 -0 +8 +4 +5 1.7
201835 MLBAtlanta Braves — 9186 20404 4351 00 233275419693 186340 384 306 93 -1 +0 +4 +2 +2 0.8
201835 A+Inland Empire 66ers — 2521 6002 351 00 286400571971 286286 2012 424 116 — — — — — —
201936 MLBNew York Mets — 2017 4001 340 00 235350412762 176250 2015 344 122 +1 +0 -1 +7 +0 0.8
201936 AAASyracuse Mets — 396355 9013025 311035 00 254322501824 248281 268 356 69 — — — — — —
202138 MLBWashington Nationals — 7869 16302 4292 00 232293362656 130368 375 285 78 -2 +0 +0 +2 +2 0.2
202138 INTLCangrejeros de Santurce — 3834 8200 4110 00 235316294610 59348 2911 284 78 — — — — — —
▸ Career Totals (raw MLB only — historical actual)
MLB Career— — 16221485 32965243 9344217 11 222275355630 133283 276 279 75 -49 -0 +89 +58 +35 13.6
▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents)
200522 MLB MLESeattle Mariners — 5048 19301 1110 00 396408521929 125500 222 404 160 +4 +0 +1 +6 +1 1.2
200522 AAA MLETacoma Rainiers — 5150 8201 1160 01 160176260436 100227 312 197 19 — — — — — —
200522 AA MLESan Antonio Missions — 221215 551212 4431 10 256273349622 93312 192 269 68 — — — — — —
200623 MLB MLESeattle Mariners — 10699 15402 3291 10 152184253437 101191 273 191 16 -11 +0 +2 +2 +2 -0.4
200724 AA MLEWest Tenn Diamond Jaxx — 356331 631504 161054 12 190236272508 82258 294 224 38 — — — — — —
200825 AAA MLELas Vegas 51s — 131121 29603 8261 01 240292364656 124278 206 291 83 — — — — — —
200825 AA MLEJacksonville Suns — 148138 28504 7391 00 203247326573 123242 265 245 52 — — — — — —
200926 AAA MLEBuffalo Bisons — 258243 511208 8792 00 210241358599 148256 313 250 55 — — — — — —
201027 AAA MLEScranton/Wilkes-Barre Yankees — 7068 14201 1210 00 206217279497 74274 301 229 41 — — — — — —
201027 AA MLETrenton Thunder — 10397 28904 4201 00 289324505829 216327 194 362 131 — — — — — —
201128 MLB MLEMinnesota Twins — 114104 15301 8321 00 144212202414 58194 287 195 18 -11 +0 +6 +7 +2 0.4
201128 AAA MLERochester Red Wings — 166153 361004 7342 00 235278379657 144268 204 277 74 — — — — — —
201229 AAA MLERochester Red Wings — 326298 571318 20714 01 191252322574 131221 226 251 56 — — — — — —
201330 MLB MLESan Diego Padres — 7168 17310 1160 00 250261324584 74321 231 258 61 -3 +0 +11 +8 +2 1.7
201330 AAA MLETucson Padres — 276257 731504 11582 02 284319389708 105334 214 307 94 — — — — — —
201431 MLB MLESan Diego Padres — 329297 7519111 24763 00 253315434749 182301 237 328 108 +3 +0 +32 +8 +7 5.1
201532 MLB MLETampa Bay Rays — 319298 521405 11863 00 174212272483 97230 273 217 33 -26 +0 +13 +8 +7 0.2
201633 MLB MLENew York Mets — 207188 42406 13543 00 223284340625 117276 266 280 76 -6 +0 +13 +4 +4 1.6
201633 AAA MLELas Vegas 51s — 2926 6100 141 00 231286269555 38263 143 246 53 — — — — — —
201734 MLB MLEChicago Cubs — 237221 559010 11703 01 249294425719 176324 305 317 101 +0 -0 +8 +4 +5 1.7
201835 MLB MLEAtlanta Braves — 9186 20404 4351 00 233275419693 186340 384 306 93 -1 +0 +4 +2 +2 0.8
201835 A+ MLEInland Empire 66ers — 2522 5002 261 00 227320500820 273246 248 339 116 — — — — — —
201936 MLB MLENew York Mets — 2017 4001 340 00 235350412762 176250 2015 348 122 +1 +0 -1 +7 +0 0.8
201936 AAA MLESyracuse Mets — 396365 709020 211215 00 192246381626 189215 315 270 69 — — — — — —
202138 MLB MLEWashington Nationals — 7869 16302 4292 00 232293362656 130368 375 284 78 -2 +0 +0 +2 +2 0.2
200522 AA MLE3 teams — 322313 831813 6691 11 265281358639 93332 212 279 75 — — — — — —
200522 AA RAW3 teams — 322309 882014 10581 11 285309395704 110340 183 312 75 — — — — — —
200623 MLB MLESeattle Mariners — 10699 15402 3291 10 152184253437 101191 273 191 16 -11 +0 +2 +2 +2 -0.4
200623 MLB RAWSeattle Mariners — 10699 15402 3291 10 152184253437 101191 273 191 16 -11 +0 +2 +2 +2 -0.4
200724 AA MLEWest Tenn Diamond Jaxx — 356331 631504 161054 12 190236272508 82263 294 224 38 — — — — — —
200724 AA RAWWest Tenn Diamond Jaxx — 356323 691605 24864 12 214276310586 96274 247 264 38 — — — — — —
200825 AA MLE2 teams — 279258 571107 16652 01 221272345617 124266 236 267 67 — — — — — —
200825 AA RAW2 teams — 279252 631209 22522 01 250315405720 155280 198 319 67 — — — — — —
200926 AAA MLEBuffalo Bisons — 258243 511208 8792 00 210241358599 148269 313 250 55 — — — — — —
200926 AAA RAWBuffalo Bisons — 258239 561409 12662 00 234277406683 172280 265 296 55 — — — — — —
201027 INTL MLE3 teams — 292277 7319010 8693 00 264292440732 177313 243 308 95 — — — — — —
201027 INTL RAW3 teams — 292267 661609 18623 00 247302408710 161286 216 312 95 — — — — — —
201128 AAA MLE3 teams — 377344 691806 21894 01 201255305560 105250 246 243 51 — — — — — —
201128 AAA RAW3 teams — 377343 741816 22844 01 216271327598 111266 226 265 51 — — — — — —
201229 AAA MLE2 teams — 379345 6715110 23825 01 194255330585 136224 226 251 56 — — — — — —
201229 AAA RAW2 teams — 379334 7115112 34765 01 213295371666 159239 209 296 56 — — — — — —
201330 AAA MLE3 teams — 436408 1132315 15933 02 277308375683 98340 213 297 87 — — — — — —
201330 AAA RAW3 teams — 436400 1172316 23793 02 292336400736 108344 185 323 87 — — — — — —
201431 MLB MLE2 teams — 441400 10026114 321024 11 250312425737 175301 237 328 108 +4 -0 +32 +8 +10 5.4
201431 MLB RAW2 teams — 441401 10227113 31954 11 254314424738 170302 227 325 108 +4 -0 +32 +8 +10 5.4
201532 MLB MLE2 teams — 422394 701907 151144 00 178215279495 102227 274 217 33 -34 +0 +13 +8 +9 -0.5
201532 MLB RAW2 teams — 422390 701805 191124 00 179225264489 85235 275 219 33 -34 +0 +13 +8 +9 -0.5
201633 MLB MLE2 teams — 236214 48506 14584 00 224284332616 107276 256 276 73 -8 +0 +13 +4 +5 1.5
201633 MLB RAW2 teams — 236210 48506 18574 00 229302338640 110282 248 288 73 -8 +0 +13 +4 +5 1.5
201734 MLB MLEChicago Cubs — 237221 559010 11703 01 249294425719 176317 305 317 101 +0 -0 +8 +4 +5 1.7
201734 MLB RAWChicago Cubs — 237218 559010 14703 01 252306431738 179324 306 325 101 +0 -0 +8 +4 +5 1.7
201835 MLB MLE2 teams — 116108 25406 6412 00 231284435720 204311 355 313 98 -0 +0 +4 +2 +3 0.9
201835 MLB RAW2 teams — 116107 26406 7402 00 243302449750 206328 346 332 98 -0 +0 +4 +2 +3 0.9
201936 AAA MLE2 teams — 416382 749021 241255 00 194251382633 188221 306 274 71 — — — — — —
201936 AAA RAW2 teams — 416372 9413026 341075 00 253324497821 245280 268 356 71 — — — — — —
202138 MLB MLE2 teams — 116105 23403 6432 00 219274343617 124339 375 284 78 -3 +0 +0 +2 +3 0.2
202138 MLB RAW2 teams — 116103 24502 8402 00 233301340641 107361 347 285 78 -3 +0 +0 +2 +3 0.2
200522 AA MLE3 teams — 322312 831813 6691 11 266281359640 93328 212 279 75 — — — — — —
200623 MLB MLESeattle Mariners — 106101 15402 3291 10 149184248432 99191 273 191 16 — — — — — —
200724 AA MLEWest Tenn Diamond Jaxx — 356333 631504 161054 12 189236270507 81258 294 224 38 — — — — — —
200825 AA MLE2 teams — 279259 571107 16652 01 220272344615 124259 236 267 67 — — — — — —
200926 AAA MLEBuffalo Bisons — 258246 511208 8792 00 207241354595 146256 313 250 55 — — — — — —
201027 INTL MLE3 teams — 292279 7319010 8693 00 262292437729 176306 243 308 95 — — — — — —
201128 AAA MLE3 teams — 377349 691806 21894 01 198255301556 103238 246 243 51 — — — — — —
201229 AAA MLE2 teams — 379348 6715110 23825 01 193255328582 135221 226 251 56 — — — — — —
201330 AAA MLE3 teams — 436415 1132315 15933 02 272308369676 96331 213 297 87 — — — — — —
201431 MLB MLE2 teams — 441402 10026114 321024 11 249312423735 174301 237 328 108 — — — — — —
201532 MLB MLE2 teams — 422400 701907 151144 00 175215275490 100230 274 217 33 — — — — — —
201633 MLB MLE2 teams — 236216 48506 14584 00 222284329613 106274 256 276 73 — — — — — —
201734 MLB MLEChicago Cubs — 237221 559010 11703 01 249294425719 176324 305 317 101 — — — — — —
201835 MLB MLE2 teams — 116107 25406 6412 00 234284439724 206320 355 313 98 — — — — — —
201936 AAA MLE2 teams — 416384 749021 241255 00 193251380631 187217 306 274 71 — — — — — —
202138 MLB MLE2 teams — 116107 23403 6432 00 215274336611 121368 375 284 78 — — — — — —
▸ Career Totals
▸ Career totals — MLB only (actual + projected)
Career— A+C — 16221485 32965243 9344217 11 222275355630 133283 276 279 69 -49 -0 +89 +58 +35 13.6
/ 162G— A+C — 650595 13226117 371777 00 222275355630 133284 276 279 69 -20 -0 +36 +23 +14 5.4
Career— MLE — 47894442 9862114122 224123349 410 222267354621 132277 265 270 69 -49 -0 +89 +58 +35 13.6
/ 162G— MLE — 650603 13529117 301677 11 224269360629 136278 265 270 69 -20 -0 +36 +23 +14 5.4

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 AAASyracuse Mets · 396 PAwOBA .350 → .270 (−80)K% 26.0% → 30.6%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA26.01%÷1.020×1.200——30.61%
BB% (unintentional) /PA7.83%÷0.966×0.690—×0.9405.26%
HBP% /PA1.26%—×0.940—×0.9401.12%
Singles /BIP20.63%÷1.042×0.930×0.950×0.94016.45%
Doubles /BIP5.16%÷1.060×0.830×0.950×0.9403.61%
Triples /BIP0.00%÷0.900×0.970×0.950×0.9400.00%
Home runs /BIP9.92%÷0.960×0.840—×0.9408.16%

Factors used: league row IL. Park (home-season share, regressed): HR 92, 1B 108, 2B 112, 3B 80, K 104, BB 93 — applied at half strength. Age: age 36 vs a level average of 27.2 → −6.0% on BB/HBP/hit rates (8.8 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.950.

Result: wOBA .350 → .270; ISO .248 → .197; BABIP .281 → .215. 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 A+Inland Empire 66ers · 25 PAwOBA .413 → .339 (−73)K% 20.0% → 25.7%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA20.00%÷1.044×1.340——25.68%
BB% (unintentional) /PA12.00%÷0.986×0.710—×0.9408.13%
HBP% /PA4.00%—×0.790—×0.9402.97%
Singles /BIP25.00%÷0.977×0.910—×0.94021.90%
Doubles /BIP0.00%÷1.087×0.820—×0.9400.00%
Triples /BIP0.00%÷0.978×0.760—×0.9400.00%
Home runs /BIP12.50%÷0.978×0.920—×0.94011.05%

Factors used: league row CAL. Park (home-season share, regressed): HR 96, 1B 95, 2B 117, 3B 96, K 109, BB 97 — applied at half strength. Age: age 35 vs a level average of 22.8 → −6.0% on BB/HBP/hit rates (12.2 yr older than average).

Result: wOBA .413 → .339; ISO .286 → .250; BABIP .286 → .246. 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 AAALas Vegas 51s · 29 PAwOBA .297 → .246 (−51)K% 10.3% → 13.7%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA10.34%÷0.971×1.290——13.74%
BB% (unintentional) /PA6.90%÷0.962×0.710—×0.9424.79%
HBP% /PA3.45%—×0.980—×0.9423.18%
Singles /BIP27.27%÷0.994×0.900—×0.94223.26%
Doubles /BIP4.55%÷1.128×0.810—×0.9423.07%
Triples /BIP0.00%÷0.980×0.810—×0.9420.00%
Home runs /BIP0.00%÷1.088×0.780—×0.9420.00%

Factors used: league row PCL. Park (home-season share, regressed): HR 118, 1B 99, 2B 126, 3B 96, K 94, BB 92 — applied at half strength. Age: age 33 vs a level average of 27.2 → −5.8% on BB/HBP/hit rates (5.8 yr older than average).

Result: wOBA .297 → .246; ISO .040 → .028; BABIP .318 → .263. 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).

2013 AAATucson Padres · 276 PAwOBA .373 → .307 (−66)K% 15.2% → 21.0%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA15.22%÷0.933×1.290——21.04%
BB% (unintentional) /PA6.16%÷1.045×0.710—×0.9724.07%
HBP% /PA0.72%—×0.980—×0.9720.69%
Singles /BIP30.14%÷1.023×0.900×1.021×0.97226.31%
Doubles /BIP8.61%÷0.963×0.810×1.021×0.9727.19%
Triples /BIP0.00%÷1.150×0.810×1.021×0.9720.00%
Home runs /BIP2.39%÷0.901×0.780—×0.9722.01%

Factors used: league row PCL. Park (home-season share, regressed): HR 80, 1B 105, 2B 93, 3B 130, K 87, BB 109 — applied at half strength. Age: age 30 vs a level average of 27.2 → −2.8% on BB/HBP/hit rates (2.8 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.021.

Result: wOBA .373 → .307; ISO .131 → .108; BABIP .388 → .334. 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).

2012 AAARochester Red Wings · 326 PAwOBA .300 → .251 (−49)K% 19.0% → 21.7%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA19.02%÷1.051×1.200——21.71%
BB% (unintentional) /PA9.20%÷1.023×0.690—×0.9826.09%
HBP% /PA1.23%—×0.940—×0.9821.13%
Singles /BIP17.70%÷1.052×0.930×0.995×0.98215.29%
Doubles /BIP6.19%÷0.913×0.830×0.995×0.9825.50%
Triples /BIP0.44%÷0.900×0.970×0.995×0.9820.47%
Home runs /BIP4.42%÷1.010×0.840—×0.9823.61%

Factors used: league row IL. Park (home-season share, regressed): HR 102, 1B 110, 2B 83, 3B 80, K 110, BB 105 — 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 ×0.995.

Result: wOBA .300 → .251; ISO .160 → .139; BABIP .255 → .221. 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).

2011 AAARochester Red Wings · 166 PAwOBA .329 → .277 (−52)K% 16.3% → 20.6%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA16.27%÷0.950×1.200——20.55%
BB% (unintentional) /PA6.63%÷1.024×0.690—×0.9924.43%
HBP% /PA1.20%—×0.940—×0.9921.12%
Singles /BIP18.85%÷0.980×0.930×1.014×0.99218.01%
Doubles /BIP9.84%÷1.004×0.830×1.014×0.9928.18%
Triples /BIP0.00%÷1.150×0.970×1.014×0.9920.00%
Home runs /BIP4.10%÷1.150×0.840—×0.9922.97%

Factors used: league row IL. Park (home-season share, regressed): HR 130, 1B 96, 2B 101, 3B 130, K 90, BB 105 — 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 ×1.014.

Result: wOBA .329 → .277; ISO .181 → .141; BABIP .297 → .268. 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).

2010 AATrenton Thunder · 103 PAwOBA .401 → .362 (−40)K% 16.5% → 19.5%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA16.50%÷1.032×1.220——19.50%
BB% (unintentional) /PA5.83%÷1.063×0.700—×0.9783.75%
HBP% /PA0.97%—×0.850—×0.9780.81%
Singles /BIP19.48%÷0.981×0.970×1.048×0.97819.73%
Doubles /BIP12.99%÷0.983×0.860×1.048×0.97811.64%
Triples /BIP0.00%÷1.016×0.950×1.048×0.9780.00%
Home runs /BIP6.49%÷0.932×0.780—×0.9785.32%

Factors used: league row EL. Park (home-season share, regressed): HR 86, 1B 96, 2B 97, 3B 103, K 106, BB 113 — 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 ×1.048.

Result: wOBA .401 → .362; ISO .266 → .230; BABIP .342 → .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).

2010 AAAScranton/Wilkes-Barre Yankees · 70 PAwOBA .275 → .229 (−46)K% 24.3% → 30.1%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA24.29%÷0.970×1.200——30.05%
BB% (unintentional) /PA1.43%÷0.983×0.690—×1.0031.01%
HBP% /PA0.00%—×0.940—×1.0030.00%
Singles /BIP23.53%÷1.003×0.930×1.018×1.00322.28%
Doubles /BIP5.88%÷1.036×0.830×1.018×1.0034.81%
Triples /BIP0.00%÷1.150×0.970×1.018×1.0030.00%
Home runs /BIP3.92%÷1.070×0.840—×1.0033.09%

Factors used: league row IL. Park (home-season share, regressed): HR 114, 1B 101, 2B 107, 3B 130, K 94, 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). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.018.

Result: wOBA .275 → .229; ISO .132 → .100; BABIP .300 → .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).

Not traceable per stint: some stints lack the counting stats the component translation needs. Level-wide factors that apply instead — .