Armando Sierra
| Year | Age | Lvl / Team | PA | AVG/OBP/SLG | HR | SB | wRC+ | WAR | MLE AVG/OBP/SLG |
|---|---|---|---|---|---|---|---|---|---|
| 2022 | 18 | ROKDSL BOS Blue | 218 | .314/.403/.473 | 5 | 3 | 61 | — | .211/.292/.304 |
| 2023 | 19 | ROKBOS | 113 | .265/.363/.398 | 2 | 0 | 45 | — | .175/.248/.243 |
| 2024 | 20 | ROKBOS | 114 | .269/.315/.433 | 3 | 0 | 44 | — | .198/.234/.302 |
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) | |||||||||||||||||||||||||||||||
| 2021 | 17 | ROK | DSL BOS Blue | — | 193 | 169 | 48 | 10 | 0 | 2 | 21 | 41 | 3 | 0 | 2 | 284 | 373 | 379 | 752 | 95 | 365 | 21 | 11 | 344 | 38 | — | — | — | — | — | — |
| 2022 | 18 | ROK | DSL BOS Blue | — | 218 | 188 | 59 | 15 | 0 | 5 | 25 | 22 | 3 | 3 | 1 | 314 | 403 | 473 | 876 | 160 | 331 | 10 | 11 | 388 | 61 | — | — | — | — | — | — |
| 2023 | 19 | ROK | FCL Red Sox | — | 113 | 98 | 26 | 7 | 0 | 2 | 14 | 30 | 1 | 0 | 1 | 265 | 363 | 398 | 761 | 133 | 364 | 27 | 12 | 345 | 45 | — | — | — | — | — | — |
| 2024 | 20 | ROK | FCL Red Sox | — | 114 | 104 | 28 | 4 | 2 | 3 | 6 | 29 | 1 | 0 | 0 | 269 | 315 | 433 | 748 | 163 | 338 | 25 | 5 | 322 | 44 | — | — | — | — | — | — |
| ▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents) | |||||||||||||||||||||||||||||||
| 2021 | 17 | ROK MLE | DSL BOS Blue | — | 193 | 175 | 32 | 6 | 0 | 1 | 15 | 51 | 3 | 0 | 2 | 183 | 259 | 234 | 493 | 51 | 255 | 26 | 8 | 224 | 38 | — | — | — | — | — | — |
| 2022 | 18 | ROK MLE | DSL BOS Blue | — | 218 | 194 | 41 | 9 | 0 | 3 | 19 | 27 | 3 | 3 | 1 | 211 | 292 | 304 | 596 | 93 | 219 | 12 | 9 | 258 | 61 | — | — | — | — | — | — |
| 2023 | 19 | ROK MLE | FCL Red Sox | — | 113 | 103 | 18 | 4 | 0 | 1 | 9 | 43 | 1 | 0 | 1 | 175 | 248 | 243 | 491 | 68 | 302 | 38 | 8 | 235 | 45 | — | — | — | — | — | — |
| 2024 | 20 | ROK MLE | FCL Red Sox | — | 114 | 106 | 21 | 3 | 1 | 2 | 4 | 41 | 1 | 0 | 0 | 198 | 234 | 302 | 536 | 104 | 275 | 36 | 4 | 233 | 44 | — | — | — | — | — | — |
| 2021 | 17 | ROK MLE | DSL BOS Blue | — | 193 | 175 | 32 | 6 | 0 | 1 | 15 | 51 | 3 | 0 | 2 | 183 | 259 | 234 | 493 | 51 | 252 | 26 | 8 | 224 | 38 | — | — | — | — | — | — |
| 2021 | 17 | ROK RAW | DSL BOS Blue | — | 193 | 169 | 48 | 10 | 0 | 2 | 21 | 41 | 3 | 0 | 2 | 284 | 373 | 379 | 752 | 95 | 365 | 21 | 11 | 344 | 38 | — | — | — | — | — | — |
| 2022 | 18 | ROK MLE | DSL BOS Blue | — | 218 | 194 | 41 | 9 | 0 | 3 | 19 | 27 | 3 | 3 | 1 | 211 | 292 | 304 | 596 | 93 | 229 | 12 | 9 | 258 | 61 | — | — | — | — | — | — |
| 2022 | 18 | ROK RAW | DSL BOS Blue | — | 218 | 188 | 59 | 15 | 0 | 5 | 25 | 22 | 3 | 3 | 1 | 314 | 403 | 473 | 876 | 160 | 331 | 10 | 11 | 388 | 61 | — | — | — | — | — | — |
| 2023 | 19 | ROK MLE | FCL Red Sox | — | 113 | 103 | 18 | 4 | 0 | 1 | 9 | 43 | 1 | 0 | 1 | 175 | 248 | 243 | 491 | 68 | 288 | 38 | 8 | 235 | 45 | — | — | — | — | — | — |
| 2023 | 19 | ROK RAW | FCL Red Sox | — | 113 | 98 | 26 | 7 | 0 | 2 | 14 | 30 | 1 | 0 | 1 | 265 | 363 | 398 | 761 | 133 | 364 | 27 | 12 | 345 | 45 | — | — | — | — | — | — |
| 2024 | 20 | ROK MLE | FCL Red Sox | — | 114 | 106 | 21 | 3 | 1 | 2 | 4 | 41 | 1 | 0 | 0 | 198 | 234 | 302 | 536 | 104 | 292 | 36 | 4 | 233 | 44 | — | — | — | — | — | — |
| 2024 | 20 | ROK RAW | FCL Red Sox | — | 114 | 104 | 28 | 4 | 2 | 3 | 6 | 29 | 1 | 0 | 0 | 269 | 315 | 433 | 748 | 163 | 338 | 25 | 5 | 322 | 44 | — | — | — | — | — | — |
| 2021 | 17 | ROK MLE | DSL BOS Blue | — | 193 | 173 | 32 | 6 | 0 | 1 | 15 | 51 | 3 | 0 | 2 | 185 | 259 | 237 | 496 | 52 | 255 | 26 | 8 | 224 | 38 | — | — | — | — | — | — |
| 2022 | 18 | ROK MLE | DSL BOS Blue | — | 218 | 194 | 41 | 9 | 0 | 3 | 19 | 27 | 3 | 3 | 1 | 211 | 292 | 304 | 596 | 93 | 219 | 12 | 9 | 258 | 61 | — | — | — | — | — | — |
| 2023 | 19 | ROK MLE | FCL Red Sox | — | 113 | 102 | 18 | 4 | 0 | 1 | 9 | 43 | 1 | 0 | 1 | 176 | 248 | 245 | 493 | 69 | 302 | 38 | 8 | 235 | 45 | — | — | — | — | — | — |
| 2024 | 20 | ROK MLE | FCL Red Sox | — | 114 | 108 | 21 | 3 | 1 | 2 | 4 | 41 | 1 | 0 | 0 | 194 | 234 | 296 | 531 | 102 | 275 | 36 | 4 | 233 | 44 | — | — | — | — | — | — |
| ▸ Model inputs — neutral MLE (past 3 seasons) | |||||||||||||||||||||||||||||||
| 2024 | 20 | ROK MLE | FCL Red Sox | — | 114 | 108 | 21 | 3 | 1 | 2 | 4 | 41 | 1 | 0 | 0 | 194 | 234 | 296 | 531 | 102 | 275 | 36 | 4 | 233 | 44 | — | — | — | — | — | — |
| ▸ Career Totals | |||||||||||||||||||||||||||||||
| Career | — | MLE | — | 638 | 578 | 112 | 22 | 1 | 7 | 47 | 162 | 8 | 3 | 4 | 194 | 264 | 272 | 535 | 78 | 254 | 25 | 7 | 239 | 48 | -39 | -1 | +0 | -4 | +14 | -3.1 | |
| / 162G | — | MLE | — | 650 | 589 | 114 | 22 | 1 | 7 | 48 | 165 | 8 | 3 | 4 | 194 | 264 | 270 | 534 | 76 | 254 | 25 | 7 | 239 | 48 | -40 | -1 | +0 | -4 | +14 | -3.2 | |
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.
2024 ROKFCL Red Sox · 114 PAwOBA .319 → .233 (−85)K% 25.4% → 35.7%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 25.44% | ÷1.026 | ×1.440 | — | — | 35.72% |
| BB% (unintentional) /PA | 5.26% | ÷0.968 | ×0.620 | — | ×0.995 | 3.35% |
| HBP% /PA | 0.88% | — | ×0.720 | — | ×0.995 | 0.63% |
| Singles /BIP | 25.33% | ÷0.993 | ×0.820 | ×1.043 | ×0.995 | 21.70% |
| Doubles /BIP | 5.33% | ÷1.061 | ×0.720 | ×1.043 | ×0.995 | 3.76% |
| Triples /BIP | 2.67% | ÷1.000 | ×0.720 | ×1.043 | ×0.995 | 1.99% |
| Home runs /BIP | 4.00% | ÷0.952 | ×0.780 | — | ×0.995 | 3.26% |
Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 90, 1B 99, 2B 112, 3B 100, K 105, BB 94 — 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 ×1.043.
Result: wOBA .319 → .233; ISO .163 → .116; BABIP .338 → .275. 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 ROKFCL Red Sox · 113 PAwOBA .337 → .235 (−101)K% 26.5% → 38.4%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 26.55% | ÷0.995 | ×1.440 | — | — | 38.43% |
| BB% (unintentional) /PA | 12.39% | ÷1.000 | ×0.620 | — | ×1.008 | 7.74% |
| HBP% /PA | 0.88% | — | ×0.720 | — | ×1.008 | 0.64% |
| Singles /BIP | 25.00% | ÷0.977 | ×0.820 | ×1.050 | ×1.008 | 22.21% |
| Doubles /BIP | 10.29% | ÷1.079 | ×0.720 | ×1.050 | ×1.008 | 7.26% |
| Triples /BIP | 0.00% | ÷1.150 | ×0.720 | ×1.050 | ×1.008 | 0.00% |
| Home runs /BIP | 2.94% | ÷0.974 | ×0.780 | — | ×1.008 | 2.37% |
Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 95, 1B 95, 2B 116, 3B 130, K 99, BB 100 — 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 ×1.050.
Result: wOBA .337 → .235; ISO .133 → .088; BABIP .364 → .302. 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).
2022 DSLDSL BOS Blue · 218 PAwOBA .382 → .258 (−124)K% 10.1% → 12.2%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 10.09% | ÷1.010 | ×1.220 | — | — | 12.19% |
| BB% (unintentional) /PA | 11.47% | ÷0.954 | ×0.700 | — | ×1.008 | 8.48% |
| HBP% /PA | 1.38% | — | ×0.700 | — | ×1.008 | 0.97% |
| Singles /BIP | 23.49% | ÷0.996 | ×0.680 | ×1.033 | ×1.008 | 16.69% |
| Doubles /BIP | 9.04% | ÷1.112 | ×0.600 | ×1.033 | ×1.008 | 5.07% |
| Triples /BIP | 0.00% | ÷0.900 | ×0.600 | ×1.033 | ×1.008 | 0.00% |
| Home runs /BIP | 3.01% | ÷0.893 | ×0.470 | — | ×1.008 | 1.60% |
Factors used: level-wide DSL factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 79, 1B 99, 2B 122, 3B 80, K 102, BB 91 — 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 ×1.033.
Result: wOBA .382 → .258; ISO .160 → .090; BABIP .331 → .219. 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 DSLDSL BOS Blue · 193 PAwOBA .336 → .224 (−112)K% 21.2% → 26.4%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 21.24% | ÷0.980 | ×1.220 | — | — | 26.44% |
| BB% (unintentional) /PA | 10.88% | ÷1.009 | ×0.700 | — | ×1.022 | 7.72% |
| HBP% /PA | 1.55% | — | ×0.700 | — | ×1.022 | 1.11% |
| Singles /BIP | 28.12% | ÷1.012 | ×0.680 | ×1.050 | ×1.022 | 20.29% |
| Doubles /BIP | 7.81% | ÷0.999 | ×0.600 | ×1.050 | ×1.022 | 5.04% |
| Triples /BIP | 0.00% | ÷1.150 | ×0.600 | ×1.050 | ×1.022 | 0.00% |
| Home runs /BIP | 1.56% | ÷1.458 | ×0.470 | — | ×1.022 | 0.51% |
Factors used: level-wide DSL factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 192, 1B 102, 2B 100, 3B 130, K 96, BB 102 — applied at half strength. Age: age 17 vs a level average of 18.5 → +2.2% on BB/HBP/hit rates (1.5 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.050.
Result: wOBA .336 → .224; ISO .095 → .049; BABIP .365 → .255. 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).