Mason Bolivar
OF ACL Guardians| Year | Age | Lvl / Team | PA | AVG/OBP/SLG | HR | SB | wRC+ | WAR | MLE AVG/OBP/SLG |
|---|---|---|---|---|---|---|---|---|---|
| 2023 | 16 | ROKDSL Guardians… | 161 | .281/.394/.326 | 0 | 2 | 48 | — | .191/.288/.220 |
| 2024 | 17 | ROKCLE | 17 | .176/.176/.353 | 0 | 0 | -37 | — | .118/.118/.235 |
| 2025 | 18 | ROKCLE | 41 | .147/.256/.176 | 0 | 0 | -16 | — | .111/.179/.139 |
| 2027PROJMLE | 20 | MLBCLE | 151 | .181/.239/.256 | 1 | 1 | 39 | -0.1 | |
| 2028PROJ34% MLB | 21 | MLBCLE | 25 | .185/.245/.265 | 0 | 0 | 45 | -0.1 |
Tools · Contract
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) | |||||||||||||||||||||||||||||||
| 2023 | 16 | ROK | DSL Guardians Blue | — | 161 | 135 | 38 | 6 | 0 | 0 | 22 | 16 | 3 | 2 | 2 | 281 | 394 | 326 | 720 | 44 | 317 | 10 | 14 | 337 | 48 | — | — | — | — | — | — |
| 2024 | 17 | ROK | ACL Guardians | — | 17 | 17 | 3 | 1 | 1 | 0 | 0 | 7 | 0 | 0 | 1 | 176 | 176 | 353 | 529 | 176 | 300 | 41 | 0 | 224 | -37 | — | — | — | — | — | — |
| 2025 | 18 | ROK | ACL Guardians | — | 41 | 34 | 5 | 1 | 0 | 0 | 4 | 14 | 1 | 0 | 1 | 147 | 256 | 176 | 433 | 29 | 238 | 34 | 10 | 206 | -16 | — | — | — | — | — | — |
| ▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents) | |||||||||||||||||||||||||||||||
| 2023 | 16 | ROK MLE | DSL Guardians Blue | — | 161 | 141 | 27 | 4 | 0 | 0 | 16 | 19 | 3 | 2 | 2 | 191 | 287 | 220 | 507 | 28 | 222 | 12 | 10 | 239 | 48 | — | — | — | — | — | — |
| 2024 | 17 | ROK MLE | ACL Guardians | — | 17 | 17 | 2 | 0 | 1 | 0 | 0 | 10 | 0 | 0 | 1 | 118 | 118 | 235 | 353 | 118 | 234 | 59 | 0 | 114 | -37 | — | — | — | — | — | — |
| 2025 | 18 | ROK MLE | ACL Guardians | — | 41 | 36 | 4 | 1 | 0 | 0 | 2 | 19 | 1 | 0 | 1 | 111 | 179 | 139 | 318 | 28 | 194 | 46 | 5 | 145 | -16 | — | — | — | — | — | — |
| 2023 | 16 | ROK MLE | DSL Guardians Blue | — | 161 | 141 | 27 | 4 | 0 | 0 | 16 | 19 | 3 | 2 | 2 | 191 | 287 | 220 | 507 | 28 | 220 | 12 | 10 | 239 | 48 | — | — | — | — | — | — |
| 2023 | 16 | ROK RAW | DSL Guardians Blue | — | 161 | 135 | 38 | 6 | 0 | 0 | 22 | 16 | 3 | 2 | 2 | 281 | 394 | 326 | 720 | 44 | 317 | 10 | 14 | 337 | 48 | — | — | — | — | — | — |
| 2024 | 17 | ROK MLE | ACL Guardians | — | 17 | 17 | 2 | 0 | 1 | 0 | 0 | 10 | 0 | 0 | 1 | 118 | 118 | 235 | 353 | 118 | 286 | 59 | 0 | 114 | -37 | — | — | — | — | — | — |
| 2024 | 17 | ROK RAW | ACL Guardians | — | 17 | 17 | 3 | 1 | 1 | 0 | 0 | 7 | 0 | 0 | 1 | 176 | 176 | 353 | 529 | 176 | 300 | 41 | 0 | 224 | -37 | — | — | — | — | — | — |
| 2025 | 18 | ROK MLE | ACL Guardians | — | 41 | 36 | 4 | 1 | 0 | 0 | 2 | 19 | 1 | 0 | 1 | 111 | 179 | 139 | 318 | 28 | 222 | 46 | 5 | 145 | -16 | — | — | — | — | — | — |
| 2025 | 18 | ROK RAW | ACL Guardians | — | 41 | 34 | 5 | 1 | 0 | 0 | 4 | 14 | 1 | 0 | 1 | 147 | 256 | 176 | 433 | 29 | 238 | 34 | 10 | 206 | -16 | — | — | — | — | — | — |
| 2023 | 16 | ROK MLE | DSL Guardians Blue | — | 161 | 141 | 27 | 4 | 0 | 0 | 16 | 19 | 3 | 2 | 2 | 191 | 287 | 220 | 507 | 28 | 222 | 12 | 10 | 239 | 48 | — | — | — | — | — | — |
| 2024 | 17 | ROK MLE | ACL Guardians | — | 17 | 17 | 2 | 0 | 1 | 0 | 0 | 10 | 0 | 0 | 1 | 118 | 118 | 235 | 353 | 118 | 234 | 59 | 0 | 114 | -37 | — | — | — | — | — | — |
| 2025 | 18 | ROK MLE | ACL Guardians | — | 41 | 38 | 4 | 1 | 0 | 0 | 2 | 19 | 1 | 0 | 1 | 105 | 179 | 132 | 311 | 26 | 194 | 46 | 5 | 145 | -16 | — | — | — | — | — | — |
| ▸ Model inputs — neutral MLE (past 3 seasons) | |||||||||||||||||||||||||||||||
| 2024 | 17 | ROK MLE | ACL Guardians | — | 17 | 17 | 2 | 0 | 1 | 0 | 0 | 10 | 0 | 0 | 1 | 118 | 118 | 235 | 353 | 118 | 234 | 59 | 0 | 114 | -37 | — | — | — | — | — | — |
| 2025 | 18 | ROK MLE | ACL Guardians | — | 41 | 38 | 4 | 1 | 0 | 0 | 2 | 19 | 1 | 0 | 1 | 105 | 179 | 132 | 311 | 26 | 194 | 46 | 5 | 145 | -16 | — | — | — | — | — | — |
| ▸ 2027 season | |||||||||||||||||||||||||||||||
| ▸ 2027 — full MLE projection (neutral park, full availability) | |||||||||||||||||||||||||||||||
| 2027 | 20 | MLB MLE | CLE | 0% | 151 | 139 | 25 | 5 | 1 | 1 | 9 | 55 | 2 | 1 | 0 | 181 | 239 | 256 | 495 | 74 | 288 | 36 | 6 | 226 | 39 | -11 | +0 | +0 | -1 | +3 | -0.1 |
| ▸ Career projection (2028+) — MLB context, MLB playing time (PA × MLB%) | |||||||||||||||||||||||||||||||
| 2028 | 21 | MLB MLE | CLE | 34% | 72 | 67 | 13 | 2 | 1 | 1 | 4 | 26 | 1 | 1 | 0 | 186 | 245 | 268 | 513 | 82 | 289 | 36 | 6 | 234 | 45 | -5 | +0 | +0 | -0 | +2 | -0.3 |
| 2028 | 21 | MLB CTX | CLE | 34% | 25 | 23 | 4 | 1 | 0 | 0 | 2 | 9 | 0 | 0 | 0 | 185 | 245 | 265 | 509 | 79 | 288 | 36 | 8 | 233 | 45 | -2 | +0 | +0 | -0 | +1 | -0.1 |
| ▸ Career Totals | |||||||||||||||||||||||||||||||
| ▸ Career totals — MLB only (actual + projected) | |||||||||||||||||||||||||||||||
| Career | — | A+C | — | 25 | 23 | 4 | 1 | 0 | 0 | 2 | 9 | 0 | 0 | 0 | 174 | 240 | 217 | 457 | 43 | 286 | 36 | 8 | 233 | 34 | -2 | +0 | +0 | -0 | +1 | -0.1 | |
| / 162G | — | A+C | — | 650 | 598 | 104 | 26 | 0 | 0 | 52 | 234 | 0 | 0 | 0 | 174 | 240 | 217 | 457 | 43 | 286 | 36 | 8 | 233 | 34 | -43 | +0 | +0 | -4 | +14 | -3.3 | |
| Career | — | MLE | — | 317 | 285 | 50 | 8 | 2 | 1 | 24 | 84 | 5 | 3 | 4 | 175 | 252 | 228 | 480 | 53 | 243 | 26 | 8 | 218 | 34 | -7 | +0 | +0 | -1 | +2 | -0.5 | |
| / 162G | — | MLE | — | 650 | 584 | 102 | 16 | 4 | 2 | 49 | 172 | 10 | 6 | 8 | 175 | 250 | 226 | 476 | 51 | 242 | 26 | 8 | 218 | 34 | -44 | +1 | +0 | -4 | +14 | -3.3 | |
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.
2025 ROKACL Guardians · 41 PAwOBA .206 → .145 (−61)K% 34.1% → 47.3%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 34.15% | ÷1.041 | ×1.440 | — | — | 47.25% |
| BB% (unintentional) /PA | 9.76% | ÷1.018 | ×0.620 | — | ×1.008 | 5.98% |
| HBP% /PA | 2.44% | — | ×0.720 | — | ×1.008 | 1.77% |
| Singles /BIP | 20.00% | ÷0.985 | ×0.820 | — | ×1.008 | 16.77% |
| Doubles /BIP | 5.00% | ÷0.982 | ×0.720 | — | ×1.008 | 3.69% |
| Triples /BIP | 0.00% | ÷1.075 | ×0.720 | — | ×1.008 | 0.00% |
| Home runs /BIP | 0.00% | ÷1.388 | ×0.780 | — | ×1.008 | 0.00% |
Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 178, 1B 97, 2B 96, 3B 115, K 108, BB 104 — 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 .206 → .145; ISO .029 → .020; BABIP .238 → .194. 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 Guardians · 17 PAwOBA .217 → .114 (−103)K% 41.2% → 60.0%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 41.18% | ÷0.988 | ×1.440 | — | — | 60.01% |
| BB% (unintentional) /PA | 0.00% | ÷0.998 | ×0.620 | — | ×1.022 | 0.00% |
| HBP% /PA | 0.00% | — | ×0.720 | — | ×1.022 | 0.00% |
| Singles /BIP | 10.00% | ÷0.982 | ×0.820 | — | ×1.022 | 8.53% |
| Doubles /BIP | 10.00% | ÷1.054 | ×0.720 | — | ×1.022 | 6.98% |
| Triples /BIP | 10.00% | ÷0.935 | ×0.720 | — | ×1.022 | 7.87% |
| Home runs /BIP | 0.00% | ÷0.984 | ×0.780 | — | ×1.022 | 0.00% |
Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 97, 1B 96, 2B 111, 3B 87, K 98, BB 100 — applied at half strength. Age: age 18 vs a level average of 19.5 → +2.2% on BB/HBP/hit rates (1.5 yr younger than average).
Result: wOBA .217 → .114; ISO .176 → .091; BABIP .300 → .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).
2023 DSLDSL Guardians Blue · 161 PAwOBA .331 → .239 (−92)K% 9.9% → 12.1%
| Component | Raw | Park ÷ | Level factor × | GB/FB × | Age × | = MLE |
|---|---|---|---|---|---|---|
| K% /PA | 9.94% | ÷1.001 | ×1.220 | — | — | 12.11% |
| BB% (unintentional) /PA | 13.66% | ÷1.006 | ×0.700 | — | ×1.022 | 9.72% |
| HBP% /PA | 1.86% | — | ×0.700 | — | ×1.022 | 1.33% |
| Singles /BIP | 26.89% | ÷0.991 | ×0.680 | ×1.006 | ×1.022 | 18.99% |
| Doubles /BIP | 5.04% | ÷0.917 | ×0.600 | ×1.006 | ×1.022 | 3.40% |
| Triples /BIP | 0.00% | ÷0.997 | ×0.600 | ×1.006 | ×1.022 | 0.00% |
| Home runs /BIP | 0.00% | ÷1.035 | ×0.470 | — | ×1.022 | 0.00% |
Factors used: level-wide DSL factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 107, 1B 98, 2B 83, 3B 99, K 100, BB 101 — 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 ×1.006.
Result: wOBA .331 → .239; ISO .044 → .031; BABIP .317 → .222. 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).