Yermain Ruiz
Boston Red Sox (A)P
Age: 20
Bats/Throws: R/R
5'11" / 160
DOB: 11/27/2005
(20 years, 11 months, 3 days)
P
Player Dashboard:
| Season | 2026 |
| Team | BOS |
| Level | MiLB |
| G | 22 |
| GS | 1 |
| IP | 55.1 |
| K% | 26.3% |
| BB% | 11.8% |
| GB% | 37.7% |
| ERA | 7.32 |
| FIP | 4.77 |
| WAR |
RosterResource
| How Acquired: | Amateur FA (VEN) Aug'23 |
| Birthplace: | Venezuela |
Rule 5 Eligible
Dec'27
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| Season | 2026 |
| Team | BOS |
| Level | MiLB |
| G | 22 |
| GS | 1 |
| IP | 55.1 |
| K% | 26.3% |
| BB% | 11.8% |
| GB% | 37.7% |
| ERA | 7.32 |
| FIP | 4.77 |
| WAR |
RosterResource
| How Acquired: | Amateur FA (VEN) Aug'23 |
| Birthplace: | Venezuela |
Rule 5 Eligible
Dec'27
News Settings
Article Source
All
FG
RG
Show
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Preseason ProjectionsMinor Leagues
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 18 | 3 | 1 | 0 | 11 | 11 | 45.2 | 7.29 | 2.96 | 0.59 | .203 | 78.4% | 44.1% | 6.4% | 1.77 | 4.39 | 4.12 | ||||||
| 2025 | BOS | CPX | 19 | 3 | 1 | 1 | 12 | 5 | 42.0 | 9.64 | 3.21 | 0.00 | .328 | 65.5% | 44.3% | 0.0% | 2.79 | 2.64 | 3.37 | ||||||
| 2026 | Steamer | PROJ | 20 | 0 | 0 | 0 | 0 | 0 | 1.0 | 4.32 | 6.64 | 1.59 | .304 | 66.4% | 42.1% | 7.00 | 6.82 | 6.58 | 0.0 | ||||||
| 2026 | OOPSY | PROJ | 20 | 0 | 0 | 0 | 1 | 1 | 3.5 | 4.81 | 4.03 | 1.38 | .300 | 61.0% | 5.95 | 5.55 | 0.0 | ||||||||
| 2026 | BOS | CPX | 20 | 1 | 1 | 0 | 5 | 1 | 13.1 | 13.50 | 4.73 | 2.70 | .467 | 74.8% | 35.3% | 26.7% | 7.43 | 7.16 | 4.76 | ||||||
| 2026 | BOS | A | 20 | 3 | 4 | 2 | 17 | 0 | 42.0 | 10.50 | 5.14 | 0.43 | .387 | 55.3% | 38.3% | 4.4% | 7.29 | 4.02 | 4.90 | ||||||
| 2026 | BOS | MiLB | 20 | 4 | 5 | 2 | 22 | 1 | 55.1 | 11.22 | 5.04 | 0.98 | .403 | 59.6% | 37.7% | 10.0% | 7.32 | 4.77 | 4.87 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 18 | 3 | 1 | 0 | 11 | 11 | 45.2 | 7.29 | 2.96 | 0.59 | .203 | 78.4% | 44.1% | 6.4% | 1.77 | 4.39 | 4.12 | ||||||
| 2025 | BOS | CPX | 19 | 3 | 1 | 1 | 12 | 5 | 42.0 | 9.64 | 3.21 | 0.00 | .328 | 65.5% | 44.3% | 0.0% | 2.79 | 2.64 | 3.37 | ||||||
| 2026 | Steamer | PROJ | 20 | 0 | 0 | 0 | 0 | 0 | 1.0 | 4.32 | 6.64 | 1.59 | .304 | 66.4% | 42.1% | 7.00 | 6.82 | 6.58 | 0.0 | ||||||
| 2026 | OOPSY | PROJ | 20 | 0 | 0 | 0 | 1 | 1 | 3.5 | 4.81 | 4.03 | 1.38 | .300 | 61.0% | 5.95 | 5.55 | 0.0 | ||||||||
| 2026 | BOS | CPX | 20 | 1 | 1 | 0 | 5 | 1 | 13.1 | 13.50 | 4.73 | 2.70 | .467 | 74.8% | 35.3% | 26.7% | 7.43 | 7.16 | 4.76 | ||||||
| 2026 | BOS | A | 20 | 3 | 4 | 2 | 17 | 0 | 42.0 | 10.50 | 5.14 | 0.43 | .387 | 55.3% | 38.3% | 4.4% | 7.29 | 4.02 | 4.90 | ||||||
| 2026 | BOS | MiLB | 20 | 4 | 5 | 2 | 22 | 1 | 55.1 | 11.22 | 5.04 | 0.98 | .403 | 59.6% | 37.7% | 10.0% | 7.32 | 4.77 | 4.87 |
Preseason ProjectionsMinor Leagues
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 3 | 1 | 1.77 | 11 | 11 | 0 | 0 | 0 | 0 | 0 | 45.2 | 176 | 27 | 13 | 9 | 3 | 15 | 0 | 3 | 2 | 0 | 37 | |
| 2025 | BOS | CPX | 3 | 1 | 2.79 | 12 | 5 | 0 | 0 | 1 | 0 | 0 | 42.0 | 178 | 38 | 19 | 13 | 0 | 15 | 0 | 2 | 4 | 2 | 45 | |
| 2026 | Steamer | PROJ | 0 | 0 | 7.00 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | |||
| 2026 | OOPSY | PROJ | 0 | 0 | 5.95 | 1 | 1 | 0 | 0 | 0 | 3.5 | 15 | 4 | 3 | 2 | 1 | 2 | 0 | 0 | 2 | |||||
| 2026 | BOS | CPX | 1 | 1 | 7.43 | 5 | 1 | 0 | 0 | 0 | 1 | 0 | 13.1 | 63 | 18 | 11 | 11 | 4 | 7 | 0 | 2 | 0 | 0 | 20 | |
| 2026 | BOS | A | 3 | 4 | 7.29 | 17 | 0 | 0 | 0 | 2 | 1 | 0 | 42.0 | 199 | 48 | 36 | 34 | 2 | 24 | 0 | 5 | 1 | 1 | 49 | |
| 2026 | BOS | MiLB | 4 | 5 | 7.32 | 22 | 1 | 0 | 0 | 2 | 2 | 0 | 55.1 | 262 | 66 | 47 | 45 | 6 | 31 | 0 | 7 | 1 | 1 | 69 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 3 | 1 | 1.77 | 11 | 11 | 0 | 0 | 0 | 0 | 0 | 45.2 | 176 | 27 | 13 | 9 | 3 | 15 | 0 | 3 | 2 | 0 | 37 | |
| 2025 | BOS | CPX | 3 | 1 | 2.79 | 12 | 5 | 0 | 0 | 1 | 0 | 0 | 42.0 | 178 | 38 | 19 | 13 | 0 | 15 | 0 | 2 | 4 | 2 | 45 | |
| 2026 | Steamer | PROJ | 0 | 0 | 7.00 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | |||
| 2026 | OOPSY | PROJ | 0 | 0 | 5.95 | 1 | 1 | 0 | 0 | 0 | 3.5 | 15 | 4 | 3 | 2 | 1 | 2 | 0 | 0 | 2 | |||||
| 2026 | BOS | CPX | 1 | 1 | 7.43 | 5 | 1 | 0 | 0 | 0 | 1 | 0 | 13.1 | 63 | 18 | 11 | 11 | 4 | 7 | 0 | 2 | 0 | 0 | 20 | |
| 2026 | BOS | A | 3 | 4 | 7.29 | 17 | 0 | 0 | 0 | 2 | 1 | 0 | 42.0 | 199 | 48 | 36 | 34 | 2 | 24 | 0 | 5 | 1 | 1 | 49 | |
| 2026 | BOS | MiLB | 4 | 5 | 7.32 | 22 | 1 | 0 | 0 | 2 | 2 | 0 | 55.1 | 262 | 66 | 47 | 45 | 6 | 31 | 0 | 7 | 1 | 1 | 69 |
Preseason ProjectionsMinor LeaguesAverages
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 7.29 | 2.96 | 2.47 | 0.59 | 21.0% | 8.5% | 12.5% | .171 | 0.92 | .203 | 78.4% | 37 | 92 | 4.39 | ||||
| 2025 | BOS | CPX | 9.64 | 3.21 | 3.00 | 0.00 | 25.3% | 8.4% | 16.9% | .236 | 1.26 | .328 | 65.5% | 61 | 61 | 2.64 | ||||
| 2026 | Steamer | PROJ | 4.32 | 6.64 | 0.65 | 1.59 | 9.9% | 15.1% | -5.3% | .299 | 1.96 | .304 | 66.4% | 6.82 | ||||||
| 2026 | OOPSY | PROJ | 4.81 | 4.03 | 1.19 | 1.38 | 12.6% | 10.6% | 2.1% | .286 | 1.52 | .300 | 61.0% | 5.55 | ||||||
| 2026 | BOS | CPX | 13.50 | 4.73 | 2.86 | 2.70 | 31.7% | 11.1% | 20.6% | .333 | 1.88 | .467 | 74.8% | 121 | 122 | 7.16 | ||||
| 2026 | BOS | A | 10.50 | 5.14 | 2.04 | 0.43 | 24.6% | 12.1% | 12.6% | .282 | 1.71 | .387 | 55.3% | 148 | 85 | 4.02 | ||||
| 2026 | BOS | MiLB | 11.22 | 5.04 | 2.23 | 0.98 | 26.3% | 11.8% | 14.5% | .295 | 1.75 | .403 | 59.6% | 141 | 94 | 4.77 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 7.29 | 2.96 | 2.47 | 0.59 | 21.0% | 8.5% | 12.5% | .171 | 0.92 | .203 | 78.4% | 37 | 92 | 4.39 | ||||
| 2025 | BOS | CPX | 9.64 | 3.21 | 3.00 | 0.00 | 25.3% | 8.4% | 16.9% | .236 | 1.26 | .328 | 65.5% | 61 | 61 | 2.64 | ||||
| 2026 | Steamer | PROJ | 4.32 | 6.64 | 0.65 | 1.59 | 9.9% | 15.1% | -5.3% | .299 | 1.96 | .304 | 66.4% | 6.82 | ||||||
| 2026 | OOPSY | PROJ | 4.81 | 4.03 | 1.19 | 1.38 | 12.6% | 10.6% | 2.1% | .286 | 1.52 | .300 | 61.0% | 5.55 | ||||||
| 2026 | BOS | CPX | 13.50 | 4.73 | 2.86 | 2.70 | 31.7% | 11.1% | 20.6% | .333 | 1.88 | .467 | 74.8% | 121 | 122 | 7.16 | ||||
| 2026 | BOS | A | 10.50 | 5.14 | 2.04 | 0.43 | 24.6% | 12.1% | 12.6% | .282 | 1.71 | .387 | 55.3% | 148 | 85 | 4.02 | ||||
| 2026 | BOS | MiLB | 11.22 | 5.04 | 2.23 | 0.98 | 26.3% | 11.8% | 14.5% | .295 | 1.75 | .403 | 59.6% | 141 | 94 | 4.77 |
Preseason ProjectionsMinor Leagues
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 1.11 | 16.1% | 44.1% | 39.8% | 29.8% | 6.4% | 48.8% | 20.7% | 30.6% | 85 | 4.12 | |||||||||
| 2025 | BOS | CPX | 1.24 | 19.8% | 44.3% | 35.8% | 15.8% | 0.0% | 43.6% | 20.5% | 35.9% | 79 | 3.37 | |||||||||
| 2026 | Steamer | PROJ | 20.4% | 42.1% | 37.5% | 6.58 | ||||||||||||||||
| 2026 | BOS | CPX | 0.80 | 20.6% | 35.3% | 44.1% | 6.7% | 26.7% | 38.2% | 50.0% | 11.8% | 83 | 4.76 | |||||||||
| 2026 | BOS | A | 1.02 | 24.2% | 38.3% | 37.5% | 20.0% | 4.4% | 39.7% | 23.1% | 37.2% | 104 | 4.90 | |||||||||
| 2026 | BOS | MiLB | 0.97 | 23.4% | 37.7% | 39.0% | 16.7% | 10.0% | 39.4% | 29.0% | 31.6% | 99 | 4.87 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 1.11 | 16.1% | 44.1% | 39.8% | 29.8% | 6.4% | 48.8% | 20.7% | 30.6% | 85 | 4.12 | |||||||||
| 2025 | BOS | CPX | 1.24 | 19.8% | 44.3% | 35.8% | 15.8% | 0.0% | 43.6% | 20.5% | 35.9% | 79 | 3.37 | |||||||||
| 2026 | Steamer | PROJ | 20.4% | 42.1% | 37.5% | 6.58 | ||||||||||||||||
| 2026 | BOS | CPX | 0.80 | 20.6% | 35.3% | 44.1% | 6.7% | 26.7% | 38.2% | 50.0% | 11.8% | 83 | 4.76 | |||||||||
| 2026 | BOS | A | 1.02 | 24.2% | 38.3% | 37.5% | 20.0% | 4.4% | 39.7% | 23.1% | 37.2% | 104 | 4.90 | |||||||||
| 2026 | BOS | MiLB | 0.97 | 23.4% | 37.7% | 39.0% | 16.7% | 10.0% | 39.4% | 29.0% | 31.6% | 99 | 4.87 |
Preseason ProjectionsMinor Leagues
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 LeaguesAverages
| Season | Team | Level | O-Swing% | Z-Swing% | Swing% | divider | O-Contact% | Z-Contact% | Contact% | Zone% | divider | F-Strike% | SwStr% | CStr% | CSW% | divider | Pace |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 69.3% | 56.5% | 21.6% | 30.1% | 7.1% | 37.2% | |||||||||
| 2025 | BOS | CPX | 52.9% | 67.1% | 40.4% | 17.4% | 14.9% | 32.3% | |||||||||
| 2026 | BOS | CPX | 34.6% | 67.1% | 33.3% | 11.4% | 24.6% | 36.0% | |||||||||
| 2026 | BOS | A | 45.8% | 72.8% | 47.7% | 12.5% | 13.6% | 26.1% | |||||||||
| 2026 | BOS | MiLB | 43.4% | 71.8% | 44.3% | 12.2% | 16.0% | 28.2% |
| Season | Team | Level | O-Swing% | Z-Swing% | Swing% | divider | O-Contact% | Z-Contact% | Contact% | Zone% | divider | F-Strike% | SwStr% | CStr% | CSW% | divider | Pace |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | BOS | DSL | 69.3% | 56.5% | 21.6% | 30.1% | 7.1% | 37.2% | |||||||||
| 2025 | BOS | CPX | 52.9% | 67.1% | 40.4% | 17.4% | 14.9% | 32.3% | |||||||||
| 2026 | BOS | CPX | 34.6% | 67.1% | 33.3% | 11.4% | 24.6% | 36.0% | |||||||||
| 2026 | BOS | A | 45.8% | 72.8% | 47.7% | 12.5% | 13.6% | 26.1% | |||||||||
| 2026 | BOS | MiLB | 43.4% | 71.8% | 44.3% | 12.2% | 16.0% | 28.2% |
