Jacob Mayers
Boston Red Sox (A+)P
Age: 22
Bats/Throws: R/R
6'5" / 205
DOB: 6/10/2004
(22 years, 4 months, 23 days)
P
Player Dashboard:
| Season | 2026 |
| Team | BOS |
| Level | MiLB |
| G | 21 |
| GS | 14 |
| IP | 65.0 |
| K% | 30.5% |
| BB% | 20.7% |
| GB% | 48.5% |
| ERA | 4.43 |
| FIP | 4.68 |
| WAR |
RosterResource
| How Acquired: | Draft |
| Draft: | 2025, Rd: 9, Pick: 13, Ovr: 268 |
| Draft Team: | Boston Red Sox |
| Signing Bonus: | $190,000 |
| College: | LSU (Baton Rouge, USA) |
Rule 5 Eligible
Dec'28
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| Season | 2026 |
| Team | BOS |
| Level | MiLB |
| G | 21 |
| GS | 14 |
| IP | 65.0 |
| K% | 30.5% |
| BB% | 20.7% |
| GB% | 48.5% |
| ERA | 4.43 |
| FIP | 4.68 |
| WAR |
RosterResource
| How Acquired: | Draft |
| Draft: | 2025, Rd: 9, Pick: 13, Ovr: 268 |
| Draft Team: | Boston Red Sox |
| Signing Bonus: | $190,000 |
| College: | LSU (Baton Rouge, USA) |
Rule 5 Eligible
Dec'28
News Settings
Article Source
All
FG
RG
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Preseason ProjectionsMinor LeaguesCollege
| Season | Team | Level | Age | W | L | SV | G | GS | IP | divider | K/9 | BB/9 | HR/9 | BABIP | LOB% | GB% | HR/FB | divider | vFA | divider | ERA | xERA | FIP | xFIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 19 | 9 | 1 | 0 | 15 | 15 | 75.2 | 12.49 | 6.90 | 0.71 | .266 | 87.2% | 2.02 | 4.52 | |||||||||
| 2024 | NICH | NCAA | 20 | 5 | 1 | 0 | 18 | 16 | 70.2 | 13.50 | 9.68 | 1.40 | .230 | 78.4% | 4.58 | 6.51 | |||||||||
| 2025 | LSU | NCAA | 21 | 2 | 0 | 0 | 17 | 0 | 15.0 | 15.60 | 12.00 | 0.00 | .182 | 67.9% | 4.80 | 5.02 | |||||||||
| 2026 | BOS | A | 22 | 2 | 2 | 1 | 15 | 8 | 46.1 | 12.43 | 8.16 | 0.58 | .264 | 69.8% | 48.9% | 12.5% | 4.27 | 4.72 | 4.60 | ||||||
| 2026 | BOS | A+ | 22 | 0 | 1 | 0 | 6 | 6 | 18.2 | 12.54 | 9.16 | 0.48 | .356 | 69.4% | 47.7% | 5.6% | 4.82 | 4.58 | 5.73 | ||||||
| 2026 | BOS | MiLB | 22 | 2 | 3 | 1 | 21 | 14 | 65.0 | 12.46 | 8.45 | 0.55 | .294 | 69.6% | 48.5% | 9.5% | 4.43 | 4.68 | 4.92 | ||||||
| 2027 | Steamer | PROJ | 23 | 0 | 0 | 0 | 0 | 0 | 1.0 | 6.61 | 6.24 | 1.29 | .302 | 69.1% | 43.7% | 5.77 | 5.72 | 5.57 | 0.0 |
| Season | Team | Level | Age | W | L | SV | G | GS | IP | divider | K/9 | BB/9 | HR/9 | BABIP | LOB% | GB% | HR/FB | divider | vFA | divider | ERA | xERA | FIP | xFIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 19 | 9 | 1 | 0 | 15 | 15 | 75.2 | 12.49 | 6.90 | 0.71 | .266 | 87.2% | 2.02 | 4.52 | |||||||||
| 2024 | NICH | NCAA | 20 | 5 | 1 | 0 | 18 | 16 | 70.2 | 13.50 | 9.68 | 1.40 | .230 | 78.4% | 4.58 | 6.51 | |||||||||
| 2025 | LSU | NCAA | 21 | 2 | 0 | 0 | 17 | 0 | 15.0 | 15.60 | 12.00 | 0.00 | .182 | 67.9% | 4.80 | 5.02 | |||||||||
| 2026 | BOS | A | 22 | 2 | 2 | 1 | 15 | 8 | 46.1 | 12.43 | 8.16 | 0.58 | .264 | 69.8% | 48.9% | 12.5% | 4.27 | 4.72 | 4.60 | ||||||
| 2026 | BOS | A+ | 22 | 0 | 1 | 0 | 6 | 6 | 18.2 | 12.54 | 9.16 | 0.48 | .356 | 69.4% | 47.7% | 5.6% | 4.82 | 4.58 | 5.73 | ||||||
| 2026 | BOS | MiLB | 22 | 2 | 3 | 1 | 21 | 14 | 65.0 | 12.46 | 8.45 | 0.55 | .294 | 69.6% | 48.5% | 9.5% | 4.43 | 4.68 | 4.92 | ||||||
| 2027 | Steamer | PROJ | 23 | 0 | 0 | 0 | 0 | 0 | 1.0 | 6.61 | 6.24 | 1.29 | .302 | 69.1% | 43.7% | 5.77 | 5.72 | 5.57 | 0.0 |
Preseason ProjectionsMinor LeaguesCollege
| Season | Team | Level | W | L | ERA | G | GS | QS | CG | ShO | SV | HLD | BS | IP | TBF | H | R | ER | HR | BB | IBB | HBP | WP | BK | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 9 | 1 | 2.02 | 15 | 15 | 0 | 0 | 0 | 75.2 | 317 | 44 | 21 | 17 | 6 | 58 | 5 | 3 | 0 | 105 | ||||
| 2024 | NICH | NCAA | 5 | 1 | 4.58 | 18 | 16 | 0 | 0 | 0 | 70.2 | 320 | 39 | 38 | 36 | 11 | 76 | 5 | 7 | 0 | 106 | ||||
| 2025 | LSU | NCAA | 2 | 0 | 4.80 | 17 | 0 | 0 | 0 | 0 | 15.0 | 72 | 4 | 9 | 8 | 0 | 20 | 4 | 2 | 0 | 26 | ||||
| 2026 | BOS | A | 2 | 2 | 4.27 | 15 | 8 | 0 | 0 | 1 | 1 | 0 | 46.1 | 204 | 27 | 25 | 22 | 3 | 42 | 0 | 4 | 5 | 0 | 64 | |
| 2026 | BOS | A+ | 0 | 1 | 4.82 | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 18.2 | 91 | 17 | 12 | 10 | 1 | 19 | 0 | 0 | 3 | 2 | 26 | |
| 2026 | BOS | MiLB | 2 | 3 | 4.43 | 21 | 14 | 0 | 0 | 1 | 1 | 0 | 65.0 | 295 | 44 | 37 | 32 | 4 | 61 | 0 | 4 | 8 | 2 | 90 | |
| 2027 | Steamer | PROJ | 0 | 0 | 5.77 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
| Season | Team | Level | W | L | ERA | G | GS | QS | CG | ShO | SV | HLD | BS | IP | TBF | H | R | ER | HR | BB | IBB | HBP | WP | BK | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 9 | 1 | 2.02 | 15 | 15 | 0 | 0 | 0 | 75.2 | 317 | 44 | 21 | 17 | 6 | 58 | 5 | 3 | 0 | 105 | ||||
| 2024 | NICH | NCAA | 5 | 1 | 4.58 | 18 | 16 | 0 | 0 | 0 | 70.2 | 320 | 39 | 38 | 36 | 11 | 76 | 5 | 7 | 0 | 106 | ||||
| 2025 | LSU | NCAA | 2 | 0 | 4.80 | 17 | 0 | 0 | 0 | 0 | 15.0 | 72 | 4 | 9 | 8 | 0 | 20 | 4 | 2 | 0 | 26 | ||||
| 2026 | BOS | A | 2 | 2 | 4.27 | 15 | 8 | 0 | 0 | 1 | 1 | 0 | 46.1 | 204 | 27 | 25 | 22 | 3 | 42 | 0 | 4 | 5 | 0 | 64 | |
| 2026 | BOS | A+ | 0 | 1 | 4.82 | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 18.2 | 91 | 17 | 12 | 10 | 1 | 19 | 0 | 0 | 3 | 2 | 26 | |
| 2026 | BOS | MiLB | 2 | 3 | 4.43 | 21 | 14 | 0 | 0 | 1 | 1 | 0 | 65.0 | 295 | 44 | 37 | 32 | 4 | 61 | 0 | 4 | 8 | 2 | 90 | |
| 2027 | Steamer | PROJ | 0 | 0 | 5.77 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
Preseason ProjectionsMinor LeaguesAveragesCollege
| Season | Team | Level | K/9 | BB/9 | K/BB | HR/9 | divider | K% | BB% | K-BB% | divider | AVG | WHIP | BABIP | LOB% | divider | ERA- | FIP- | divider | FIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 12.49 | 6.90 | 1.81 | 0.71 | 33.1% | 18.3% | 14.8% | .173 | 1.35 | .266 | 87.2% | 38 | 84 | 4.52 | ||||
| 2024 | NICH | NCAA | 13.50 | 9.68 | 1.39 | 1.40 | 33.1% | 23.8% | 9.4% | .163 | 1.63 | .230 | 78.4% | 76 | 108 | 6.51 | ||||
| 2025 | LSU | NCAA | 15.60 | 12.00 | 1.30 | 0.00 | 36.1% | 27.8% | 8.3% | .083 | 1.60 | .182 | 67.9% | 101 | 106 | 5.02 | ||||
| 2026 | BOS | A | 12.43 | 8.16 | 1.52 | 0.58 | 31.4% | 20.6% | 10.8% | .171 | 1.49 | .264 | 69.8% | 87 | 100 | 4.72 | ||||
| 2026 | BOS | A+ | 12.54 | 9.16 | 1.37 | 0.48 | 28.6% | 20.9% | 7.7% | .236 | 1.93 | .356 | 69.4% | 93 | 90 | 4.58 | ||||
| 2026 | BOS | MiLB | 12.46 | 8.45 | 1.48 | 0.55 | 30.5% | 20.7% | 9.8% | .191 | 1.62 | .294 | 69.6% | 88 | 97 | 4.68 | ||||
| 2027 | Steamer | PROJ | 6.61 | 6.24 | 1.06 | 1.29 | 15.7% | 14.8% | 0.9% | .271 | 1.76 | .302 | 69.1% | 5.72 |
| Season | Team | Level | K/9 | BB/9 | K/BB | HR/9 | divider | K% | BB% | K-BB% | divider | AVG | WHIP | BABIP | LOB% | divider | ERA- | FIP- | divider | FIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 12.49 | 6.90 | 1.81 | 0.71 | 33.1% | 18.3% | 14.8% | .173 | 1.35 | .266 | 87.2% | 38 | 84 | 4.52 | ||||
| 2024 | NICH | NCAA | 13.50 | 9.68 | 1.39 | 1.40 | 33.1% | 23.8% | 9.4% | .163 | 1.63 | .230 | 78.4% | 76 | 108 | 6.51 | ||||
| 2025 | LSU | NCAA | 15.60 | 12.00 | 1.30 | 0.00 | 36.1% | 27.8% | 8.3% | .083 | 1.60 | .182 | 67.9% | 101 | 106 | 5.02 | ||||
| 2026 | BOS | A | 12.43 | 8.16 | 1.52 | 0.58 | 31.4% | 20.6% | 10.8% | .171 | 1.49 | .264 | 69.8% | 87 | 100 | 4.72 | ||||
| 2026 | BOS | A+ | 12.54 | 9.16 | 1.37 | 0.48 | 28.6% | 20.9% | 7.7% | .236 | 1.93 | .356 | 69.4% | 93 | 90 | 4.58 | ||||
| 2026 | BOS | MiLB | 12.46 | 8.45 | 1.48 | 0.55 | 30.5% | 20.7% | 9.8% | .191 | 1.62 | .294 | 69.6% | 88 | 97 | 4.68 | ||||
| 2027 | Steamer | PROJ | 6.61 | 6.24 | 1.06 | 1.29 | 15.7% | 14.8% | 0.9% | .271 | 1.76 | .302 | 69.1% | 5.72 |
Preseason ProjectionsMinor LeaguesCollege
| Season | Team | Level | GB/FB | LD% | GB% | FB% | IFFB% | HR/FB | IFH% | BUH% | divider | Pull% | Cent% | Oppo% | divider | Soft% | Med% | Hard% | divider | SIERA | xFIP- | xFIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | BOS | A | 1.83 | 24.4% | 48.9% | 26.7% | 16.7% | 12.5% | 46.7% | 20.7% | 32.6% | 98 | 4.60 | |||||||||
| 2026 | BOS | A+ | 1.17 | 11.4% | 47.7% | 40.9% | 22.2% | 5.6% | 39.1% | 34.8% | 26.1% | 114 | 5.73 | |||||||||
| 2026 | BOS | MiLB | 1.55 | 20.1% | 48.5% | 31.3% | 19.0% | 9.5% | 44.2% | 25.4% | 30.4% | 102 | 4.92 | |||||||||
| 2027 | Steamer | PROJ | 20.5% | 43.7% | 35.8% | 5.57 |
| Season | Team | Level | GB/FB | LD% | GB% | FB% | IFFB% | HR/FB | IFH% | BUH% | divider | Pull% | Cent% | Oppo% | divider | Soft% | Med% | Hard% | divider | SIERA | xFIP- | xFIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | BOS | A | 1.83 | 24.4% | 48.9% | 26.7% | 16.7% | 12.5% | 46.7% | 20.7% | 32.6% | 98 | 4.60 | |||||||||
| 2026 | BOS | A+ | 1.17 | 11.4% | 47.7% | 40.9% | 22.2% | 5.6% | 39.1% | 34.8% | 26.1% | 114 | 5.73 | |||||||||
| 2026 | BOS | MiLB | 1.55 | 20.1% | 48.5% | 31.3% | 19.0% | 9.5% | 44.2% | 25.4% | 30.4% | 102 | 4.92 | |||||||||
| 2027 | Steamer | PROJ | 20.5% | 43.7% | 35.8% | 5.57 |
Preseason ProjectionsMinor LeaguesCollege
MLB F-Strike%, SwStr%, CStr%, CSW% are from the Sports Info Solution data source.
All MiLB and Pace data are from Statcast.
All MiLB and Pace data are from Statcast.
Preseason ProjectionsMinor LeaguesAveragesCollege
Preseason ProjectionsMinor LeaguesCollege
