Marcelo Mayer
Bats L Throws R6'3" 188 lbBorn 2002 Chula Vista, USADebut 2025Team BOSDraft 2021 R1 #4 Boston Red Sox, Eastlake HSContract 1 y/$783,500 (26) 2026: $230,441
Projections
2027 NEXT+ 86.6FIELD+ 100.3 at 2BTotal 0.35 WAR
| Season | PA | AB | H | 2B | 3B | HR | BB | SO | SB | AVG | OBP | SLG | OPS | ISO | wOBA | K% | BB% | HIT+ | WAR |
|---|
| 2026 | 228 | 208 | 51 | 12 | 1 | 6 | 18 | 56 | 2 | 0.247 | 0.307 | 0.402 | 0.709 | 0.155 | 0.309 | 24.7 | 7.7 | 93.4 | 0.53 |
| 2027 | 232 | 211 | 50 | 11 | 1 | 6 | 17 | 53 | 3 | 0.237 | 0.297 | 0.376 | 0.673 | 0.139 | 0.296 | 22.9 | 7.3 | 85.3 | 0.31 |
Projected rates are per plate appearance or batter faced; counting stats scale with projected playing time. Statcast measurements inform these projections as inputs and are reported as measurements, not projected.
Most similar through age 22
His ten closest age-22 comparables averaged 79 HIT+ the next season; 9 of 10 played. Averages cover only the players who got a next season, which is why the played count matters.
Batting
| Year | Team | G | PA | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | OBP | SLG | OPS | HIT+ |
|---|
| 2027 proj | | | 232 | | 50 | 11 | 1 | 6 | | 3 | 17 | 53 | 0.237 | 0.297 | 0.376 | 0.673 | 85.3 |
| 2026* | BOS | 70 | 228 | 19 | 45 | 10 | 0 | 3 | | 3 | 16 | 44 | 0.220 | 0.282 | 0.312 | 0.594 | 65.5 |
| 2025 | BOS | 44 | 136 | 20 | 29 | 8 | 1 | 4 | 10 | 0 | 8 | 41 | 0.228 | 0.272 | 0.402 | 0.674 | 82.5 |
| Career | | 44 | 136 | 20 | 29 | 8 | 1 | 4 | 10 | 0 | 8 | 41 | 0.228 | 0.272 | 0.402 | 0.674 | 82.5 |
Statcast
| Year | PA | EV | LA | Barrel% | HardHit% | Whiff% | Chase% | xBA | xSLG | xwOBA | Sprint |
|---|
| 2026 | 228 | 86.1 | 8.8 | 6.1 | 36.0 | 26.5 | 29.2 | 0.201 | 0.297 | 0.259 | 27.4 |
| 2025 | 136 | 90.0 | 6.7 | 9.2 | 51.7 | 28.6 | 29.6 | 0.210 | 0.348 | 0.263 | 27.5 |
Fielding
| Year | Team | Pos | G | Inn | PO | A | E | DP | Fld% | Runs saved |
|---|
| 2025 | BOS | 3B | 39 | 249 | 17 | 50 | 1 | 4 | 0.985 | +0.3 |
| 2025 | BOS | 2B | 8 | 57 | 10 | 19 | 0 | 3 | 1.000 | +0.7 |
| 2025 | BOS | SS | 2 | 3 | 0 | 1 | 1 | 0 | 0.500 | +0.1 |
Runs saved covers the Statcast era; for catchers it includes framing.
Minor leagues
| Year | Level | Team | Side | PA / BF | Line | AVG / ERA | OPS |
|---|
| 2025 | AAA | Worcester Red Sox | Bat | 193 | 9 HR, 2 SB | 0.271 | 0.818 |
| 2024 | AA | Portland Sea Dogs | Bat | 335 | 8 HR, 13 SB | 0.307 | 0.850 |
| 2023 | AA | Portland Sea Dogs | Bat | 190 | 6 HR, 4 SB | 0.189 | 0.609 |
| 2023 | A+ | Greenville Drive | Bat | 164 | 7 HR, 5 SB | 0.290 | 0.890 |
| 2022 | A+ | Greenville Drive | Bat | 116 | 4 HR, 1 SB | 0.265 | 0.828 |
| 2022 | A | Salem Red Sox | Bat | 308 | 9 HR, 16 SB | 0.286 | 0.910 |
| 2021 | Rk | FCL Red Sox | Bat | 107 | 3 HR, 7 SB | 0.275 | 0.817 |
Splits
| Year | vs LHP | vs RHP | Home | Away |
|---|
| 2026 | 0.611 | 0.254 | 0.218 | 0.341 |
| 2025 | 0.185 | 0.326 | 0.328 | 0.275 |
wOBA by split, from pitch level data, 2015 on. For pitchers the split is the batter side faced.