Jonathan Sierra
| Year | Age | Lvl / Team | PA | AVG/OBP/SLG | HR | SB | wRC+ | WAR | MLE AVG/OBP/SLG |
|---|---|---|---|---|---|---|---|---|---|
| 2019 | 20 | ACHC | 408 | .242/.285/.324 | 3 | 2 | 33 | — | .197/.231/.259 |
| 2021 | 22 | ACHC | 313 | .249/.341/.337 | 3 | 1 | 55 | — | .208/.277/.275 |
| 2022 | 23 | A+CHC | 203 | .255/.322/.348 | 3 | 0 | 57 | — | .216/.262/.279 |
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) | |||||||||||||||||||||||||||||||
| 2016 | 17 | ROK | DSL Cubs 1 | — | 264 | 220 | 58 | 11 | 3 | 0 | 37 | 48 | 6 | 12 | 5 | 264 | 383 | 341 | 723 | 77 | 337 | 18 | 14 | 337 | 40 | — | — | — | — | — | — |
| 2017 | 18 | ROK | AZL Cubs | — | 205 | 185 | 48 | 10 | 2 | 2 | 18 | 59 | 2 | 6 | 2 | 259 | 332 | 368 | 699 | 108 | 371 | 29 | 9 | 317 | 28 | — | — | — | — | — | — |
| 2019 | 20 | A | South Bend Cubs | — | 408 | 380 | 92 | 18 | 2 | 3 | 21 | 62 | 2 | 2 | 3 | 242 | 285 | 324 | 609 | 82 | 279 | 15 | 5 | 272 | 33 | — | — | — | — | — | — |
| 2021 | 22 | A | Myrtle Beach Pelicans | — | 313 | 273 | 68 | 13 | 1 | 3 | 34 | 61 | 4 | 1 | 1 | 249 | 341 | 337 | 678 | 88 | 310 | 19 | 11 | 311 | 55 | — | — | — | — | — | — |
| 2022 | 23 | A+ | South Bend Cubs | — | 203 | 184 | 47 | 8 | 0 | 3 | 18 | 33 | 0 | 0 | 1 | 255 | 322 | 348 | 670 | 92 | 295 | 16 | 9 | 304 | 57 | — | — | — | — | — | — |
| ▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents) | |||||||||||||||||||||||||||||||
| 2016 | 17 | ROK MLE | DSL Cubs 1 | — | 264 | 232 | 40 | 7 | 2 | 0 | 26 | 59 | 6 | 12 | 5 | 172 | 273 | 220 | 493 | 47 | 229 | 22 | 10 | 228 | 40 | — | — | — | — | — | — |
| 2017 | 18 | ROK MLE | AZL Cubs | — | 205 | 192 | 33 | 6 | 1 | 1 | 11 | 85 | 2 | 6 | 2 | 172 | 224 | 229 | 454 | 57 | 305 | 41 | 5 | 210 | 28 | — | — | — | — | — | — |
| 2019 | 20 | A MLE | South Bend Cubs | — | 408 | 386 | 76 | 13 | 1 | 3 | 15 | 87 | 2 | 2 | 3 | 197 | 231 | 259 | 490 | 62 | 243 | 21 | 4 | 217 | 33 | — | — | — | — | — | — |
| 2021 | 22 | A MLE | Myrtle Beach Pelicans | — | 313 | 284 | 59 | 11 | 1 | 2 | 23 | 86 | 4 | 1 | 1 | 208 | 277 | 275 | 551 | 67 | 287 | 27 | 7 | 250 | 55 | — | — | — | — | — | — |
| 2022 | 23 | A+ MLE | South Bend Cubs | — | 203 | 190 | 41 | 6 | 0 | 2 | 12 | 42 | 0 | 0 | 1 | 216 | 262 | 279 | 541 | 63 | 269 | 21 | 6 | 252 | 57 | — | — | — | — | — | — |
| 2016 | 17 | ROK MLE | DSL Cubs 1 | — | 264 | 232 | 40 | 7 | 2 | 0 | 26 | 59 | 6 | 12 | 5 | 172 | 273 | 220 | 493 | 47 | 231 | 22 | 10 | 228 | 40 | — | — | — | — | — | — |
| 2016 | 17 | ROK RAW | DSL Cubs 1 | — | 264 | 220 | 58 | 11 | 3 | 0 | 37 | 48 | 6 | 12 | 5 | 264 | 383 | 341 | 723 | 77 | 337 | 18 | 14 | 337 | 40 | — | — | — | — | — | — |
| 2017 | 18 | ROK MLE | AZL Cubs | — | 205 | 192 | 33 | 6 | 1 | 1 | 11 | 85 | 2 | 6 | 2 | 172 | 224 | 229 | 454 | 57 | 302 | 41 | 5 | 210 | 28 | — | — | — | — | — | — |
| 2017 | 18 | ROK RAW | AZL Cubs | — | 205 | 185 | 48 | 10 | 2 | 2 | 18 | 59 | 2 | 6 | 2 | 259 | 332 | 368 | 699 | 108 | 371 | 29 | 9 | 317 | 28 | — | — | — | — | — | — |
| 2019 | 20 | A MLE | South Bend Cubs | — | 408 | 386 | 76 | 13 | 1 | 3 | 15 | 87 | 2 | 2 | 3 | 197 | 231 | 259 | 490 | 62 | 243 | 21 | 4 | 217 | 33 | — | — | — | — | — | — |
| 2019 | 20 | A RAW | South Bend Cubs | — | 408 | 380 | 92 | 18 | 2 | 3 | 21 | 62 | 2 | 2 | 3 | 242 | 285 | 324 | 609 | 82 | 279 | 15 | 5 | 272 | 33 | — | — | — | — | — | — |
| 2021 | 22 | A MLE | Myrtle Beach Pelicans | — | 313 | 284 | 59 | 11 | 1 | 2 | 23 | 86 | 4 | 1 | 1 | 208 | 277 | 275 | 551 | 67 | 289 | 27 | 7 | 250 | 55 | — | — | — | — | — | — |
| 2021 | 22 | A RAW | Myrtle Beach Pelicans | — | 313 | 273 | 68 | 13 | 1 | 3 | 34 | 61 | 4 | 1 | 1 | 249 | 341 | 337 | 678 | 88 | 310 | 19 | 11 | 311 | 55 | — | — | — | — | — | — |
| 2022 | 23 | A+ MLE | South Bend Cubs | — | 203 | 190 | 41 | 6 | 0 | 2 | 12 | 42 | 0 | 0 | 1 | 216 | 262 | 279 | 541 | 63 | 265 | 21 | 6 | 252 | 57 | — | — | — | — | — | — |
| 2022 | 23 | A+ RAW | South Bend Cubs | — | 203 | 184 | 47 | 8 | 0 | 3 | 18 | 33 | 0 | 0 | 1 | 255 | 322 | 348 | 670 | 92 | 295 | 16 | 9 | 304 | 57 | — | — | — | — | — | — |
| 2016 | 17 | ROK MLE | DSL Cubs 1 | — | 264 | 230 | 40 | 7 | 2 | 0 | 26 | 59 | 6 | 12 | 5 | 174 | 273 | 222 | 494 | 48 | 229 | 22 | 10 | 228 | 40 | — | — | — | — | — | — |
| 2017 | 18 | ROK MLE | AZL Cubs | — | 205 | 190 | 33 | 6 | 1 | 1 | 11 | 85 | 2 | 6 | 2 | 174 | 224 | 232 | 456 | 58 | 305 | 41 | 5 | 210 | 28 | — | — | — | — | — | — |
| 2019 | 20 | A MLE | South Bend Cubs | — | 408 | 388 | 76 | 13 | 1 | 3 | 15 | 87 | 2 | 2 | 3 | 196 | 231 | 258 | 489 | 62 | 243 | 21 | 4 | 217 | 33 | — | — | — | — | — | — |
| 2021 | 22 | A MLE | Myrtle Beach Pelicans | — | 313 | 283 | 59 | 11 | 1 | 2 | 23 | 86 | 4 | 1 | 1 | 208 | 277 | 276 | 552 | 67 | 287 | 27 | 7 | 250 | 55 | — | — | — | — | — | — |
| 2022 | 23 | A+ MLE | South Bend Cubs | — | 203 | 189 | 41 | 6 | 0 | 2 | 12 | 42 | 0 | 0 | 1 | 217 | 262 | 280 | 543 | 63 | 269 | 21 | 6 | 252 | 57 | — | — | — | — | — | — |
| ▸ Career Totals | |||||||||||||||||||||||||||||||
| Career | — | MLE | — | 1393 | 1284 | 249 | 43 | 5 | 8 | 87 | 359 | 14 | 21 | 12 | 194 | 253 | 254 | 507 | 60 | 261 | 26 | 6 | 231 | 42 | -96 | -1 | +0 | -15 | +30 | -8.3 | |
| / 162G | — | MLE | — | 650 | 599 | 116 | 20 | 2 | 4 | 41 | 168 | 7 | 10 | 6 | 194 | 254 | 254 | 508 | 60 | 260 | 26 | 6 | 231 | 42 | -45 | -0 | +0 | -7 | +14 | -3.9 | |
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.
2022 A+South Bend Cubs · 203 PAwOBA .295 → .252 (−44)K% 16.3% → 20.6%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 16.26% | ÷1.003 | ×1.270 | — | — | 20.59% |
| BB% (unintentional) /PA | 8.37% | ÷0.986 | ×0.710 | — | ×0.988 | 5.96% |
| HBP% /PA | 0.00% | — | ×0.790 | — | ×0.988 | 0.00% |
| Singles /BIP | 23.84% | ÷1.010 | ×0.920 | ×1.038 | ×0.988 | 22.28% |
| Doubles /BIP | 5.30% | ÷1.020 | ×0.810 | ×1.038 | ×0.988 | 4.32% |
| Triples /BIP | 0.00% | ÷1.097 | ×0.850 | ×1.038 | ×0.988 | 0.00% |
| Home runs /BIP | 1.99% | ÷0.938 | ×0.800 | — | ×0.988 | 1.67% |
Factors used: league row Midwest League. Park (home-season share, regressed): HR 88, 1B 102, 2B 104, 3B 119, K 101, BB 97 — applied at half strength. Age: age 24 vs a level average of 22.8 → −1.2% on BB/HBP/hit rates (1.2 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.038.
Result: wOBA .295 → .252; ISO .092 → .076; BABIP .295 → .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).
2021 AMyrtle Beach Pelicans · 313 PAwOBA .303 → .250 (−53)K% 19.5% → 27.6%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 19.49% | ÷0.961 | ×1.360 | — | — | 27.58% |
| BB% (unintentional) /PA | 10.54% | ÷0.963 | ×0.690 | — | ×0.990 | 7.48% |
| HBP% /PA | 1.28% | — | ×0.780 | — | ×0.990 | 0.99% |
| Singles /BIP | 24.06% | ÷1.002 | ×0.920 | ×1.026 | ×0.990 | 22.43% |
| Doubles /BIP | 6.13% | ÷0.923 | ×0.830 | ×1.026 | ×0.990 | 5.60% |
| Triples /BIP | 0.47% | ÷0.977 | ×0.910 | ×1.026 | ×0.990 | 0.45% |
| Home runs /BIP | 1.42% | ÷0.977 | ×0.800 | — | ×0.990 | 1.15% |
Factors used: level-wide A factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 95, 1B 100, 2B 85, 3B 95, K 92, BB 93 — applied at half strength. Age: age 23 vs a level average of 22.0 → −1.0% on BB/HBP/hit rates (1.0 yr older than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.026.
Result: wOBA .303 → .250; ISO .088 → .073; BABIP .310 → .287. 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 ASouth Bend Cubs · 408 PAwOBA .268 → .217 (−51)K% 15.2% → 21.4%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 15.20% | ÷0.968 | ×1.360 | — | — | 21.36% |
| BB% (unintentional) /PA | 5.15% | ÷0.994 | ×0.690 | — | ×1.015 | 3.63% |
| HBP% /PA | 0.49% | — | ×0.780 | — | ×1.015 | 0.39% |
| Singles /BIP | 21.70% | ÷0.987 | ×0.920 | ×0.950 | ×1.015 | 19.50% |
| Doubles /BIP | 5.66% | ÷1.026 | ×0.830 | ×0.950 | ×1.015 | 4.42% |
| Triples /BIP | 0.63% | ÷1.150 | ×0.910 | ×0.950 | ×1.015 | 0.48% |
| Home runs /BIP | 0.94% | ÷0.914 | ×0.800 | — | ×1.015 | 0.84% |
Factors used: level-wide A factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 83, 1B 97, 2B 105, 3B 130, K 94, BB 99 — 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 ×0.950.
Result: wOBA .268 → .217; ISO .082 → .063; BABIP .279 → .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).
2017 ROKAZL Cubs · 205 PAwOBA .307 → .210 (−97)K% 28.8% → 41.4%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 28.78% | ÷1.000 | ×1.440 | — | — | 41.44% |
| BB% (unintentional) /PA | 8.29% | ÷1.000 | ×0.620 | — | ×1.008 | 5.18% |
| HBP% /PA | 0.98% | — | ×0.720 | — | ×1.008 | 0.71% |
| Singles /BIP | 26.98% | ÷1.000 | ×0.820 | ×1.030 | ×1.008 | 22.96% |
| Doubles /BIP | 7.94% | ÷1.000 | ×0.720 | ×1.030 | ×1.008 | 5.93% |
| Triples /BIP | 1.59% | ÷1.000 | ×0.720 | ×1.030 | ×1.008 | 1.19% |
| Home runs /BIP | 1.59% | ÷1.000 | ×0.780 | — | ×1.008 | 1.25% |
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 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 ×1.030.
Result: wOBA .307 → .210; ISO .108 → .070; BABIP .371 → .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).
2016 DSLDSL Cubs 1 · 264 PAwOBA .329 → .228 (−101)K% 18.2% → 22.2%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 18.18% | ÷1.000 | ×1.220 | — | — | 22.18% |
| BB% (unintentional) /PA | 14.02% | ÷1.000 | ×0.700 | — | ×1.008 | 9.88% |
| HBP% /PA | 2.27% | — | ×0.700 | — | ×1.008 | 1.60% |
| Singles /BIP | 25.58% | ÷1.000 | ×0.680 | ×1.021 | ×1.008 | 17.90% |
| Doubles /BIP | 6.40% | ÷1.000 | ×0.600 | ×1.021 | ×1.008 | 3.95% |
| Triples /BIP | 1.74% | ÷1.000 | ×0.600 | ×1.021 | ×1.008 | 1.08% |
| Home runs /BIP | 0.00% | ÷1.000 | ×0.470 | — | ×1.008 | 0.00% |
Factors used: level-wide DSL 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 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 ×1.021.
Result: wOBA .329 → .228; ISO .077 → .049; BABIP .337 → .229. 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).