Roberto Perez
Seattle Mariners (CPX)P
Age: 22
Bats/Throws: R/R
5'9" / 145
DOB: 1/21/2004
(22 years, 8 months, 3 days)
P
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Preseason ProjectionsIn-Season 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 | SEA | DSL | 20 | 3 | 3 | 0 | 17 | 3 | 38.0 | 10.89 | 2.61 | 0.24 | .292 | 59.1% | 43.6% | 2.6% | 2.84 | 2.92 | 3.16 | ||||||
| 2025 | SEA | CPX | 21 | 1 | 0 | 2 | 17 | 0 | 25.1 | 11.72 | 2.84 | 0.00 | .224 | 76.2% | 45.5% | 0.0% | 1.42 | 3.08 | 3.71 | ||||||
| 2025 | SEA | A | 21 | 0 | 0 | 0 | 1 | 0 | 1.0 | 9.00 | 36.00 | 9.00 | .500 | 17.9% | 20.0% | 50.0% | 54.00 | 27.00 | 15.74 | ||||||
| 2025 | SEA | MiLB | 21 | 1 | 0 | 2 | 18 | 0 | 26.1 | 11.62 | 4.10 | 0.34 | .245 | 63.9% | 42.9% | 5.0% | 3.42 | 3.98 | 4.17 | ||||||
| 2026 | Steamer | PROJ | 22 | 0 | 0 | 0 | 1 | 0 | 1.0 | 6.45 | 6.11 | 1.37 | .289 | 70.8% | 40.0% | 5.51 | 5.86 | 5.85 | 0.0 | ||||||
| 2026 | OOPSY | PROJ | 22 | 0 | 0 | 0 | 1 | 0 | 1.5 | 7.20 | 3.93 | 1.14 | .271 | 66.0% | 4.45 | 4.64 | 0.0 | ||||||||
| 2026 | SEA | CPX | 22 | 2 | 0 | 1 | 13 | 8 | 45.2 | 8.28 | 1.97 | 0.00 | .270 | 66.7% | 46.7% | 0.0% | 2.56 | 3.98 | 5.42 | ||||||
| 2026 | Steamer | ROS | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5.45 | 4.88 | 1.50 | .287 | 69.7% | 5.54 | 5.83 | 0.0 | ||||||||
| 2026 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 1 | 3.0 | 4.64 | 3.67 | 1.34 | .278 | 60.3% | 5.50 | 5.41 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | SEA | DSL | 20 | 3 | 3 | 0 | 17 | 3 | 38.0 | 10.89 | 2.61 | 0.24 | .292 | 59.1% | 43.6% | 2.6% | 2.84 | 2.92 | 3.16 | ||||||
| 2025 | SEA | CPX | 21 | 1 | 0 | 2 | 17 | 0 | 25.1 | 11.72 | 2.84 | 0.00 | .224 | 76.2% | 45.5% | 0.0% | 1.42 | 3.08 | 3.71 | ||||||
| 2025 | SEA | A | 21 | 0 | 0 | 0 | 1 | 0 | 1.0 | 9.00 | 36.00 | 9.00 | .500 | 17.9% | 20.0% | 50.0% | 54.00 | 27.00 | 15.74 | ||||||
| 2025 | SEA | MiLB | 21 | 1 | 0 | 2 | 18 | 0 | 26.1 | 11.62 | 4.10 | 0.34 | .245 | 63.9% | 42.9% | 5.0% | 3.42 | 3.98 | 4.17 | ||||||
| 2026 | Steamer | PROJ | 22 | 0 | 0 | 0 | 1 | 0 | 1.0 | 6.45 | 6.11 | 1.37 | .289 | 70.8% | 40.0% | 5.51 | 5.86 | 5.85 | 0.0 | ||||||
| 2026 | OOPSY | PROJ | 22 | 0 | 0 | 0 | 1 | 0 | 1.5 | 7.20 | 3.93 | 1.14 | .271 | 66.0% | 4.45 | 4.64 | 0.0 | ||||||||
| 2026 | SEA | CPX | 22 | 2 | 0 | 1 | 13 | 8 | 45.2 | 8.28 | 1.97 | 0.00 | .270 | 66.7% | 46.7% | 0.0% | 2.56 | 3.98 | 5.42 | ||||||
| 2026 | Steamer | ROS | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5.45 | 4.88 | 1.50 | .287 | 69.7% | 5.54 | 5.83 | 0.0 | ||||||||
| 2026 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 1 | 3.0 | 4.64 | 3.67 | 1.34 | .278 | 60.3% | 5.50 | 5.41 | 0.0 |
Preseason ProjectionsIn-Season 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 | SEA | DSL | 3 | 3 | 2.84 | 17 | 3 | 0 | 0 | 0 | 0 | 1 | 38.0 | 156 | 29 | 18 | 12 | 1 | 11 | 0 | 2 | 1 | 0 | 46 | |
| 2025 | SEA | CPX | 1 | 0 | 1.42 | 17 | 0 | 0 | 0 | 2 | 3 | 1 | 25.1 | 92 | 11 | 5 | 4 | 0 | 8 | 0 | 2 | 4 | 0 | 33 | |
| 2025 | SEA | A | 0 | 0 | 54.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 10 | 3 | 6 | 6 | 1 | 4 | 0 | 0 | 1 | 0 | 1 | |
| 2025 | SEA | MiLB | 1 | 0 | 3.42 | 18 | 0 | 0 | 0 | 2 | 3 | 1 | 26.1 | 102 | 14 | 11 | 10 | 1 | 12 | 0 | 2 | 5 | 0 | 34 | |
| 2026 | Steamer | PROJ | 0 | 0 | 5.51 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2026 | OOPSY | PROJ | 0 | 0 | 4.45 | 1 | 0 | 0 | 0 | 0 | 1.5 | 6 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||||
| 2026 | SEA | CPX | 2 | 0 | 2.56 | 13 | 8 | 0 | 0 | 1 | 0 | 0 | 45.2 | 182 | 34 | 16 | 13 | 0 | 10 | 0 | 4 | 4 | 0 | 42 | |
| 2026 | Steamer | ROS | 0 | 0 | 5.54 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2026 | OOPSY | ROS | 0 | 0 | 5.50 | 1 | 1 | 0 | 0 | 0 | 3.0 | 12 | 3 | 2 | 2 | 0 | 1 | 0 | 0 | 2 |
| 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 | SEA | DSL | 3 | 3 | 2.84 | 17 | 3 | 0 | 0 | 0 | 0 | 1 | 38.0 | 156 | 29 | 18 | 12 | 1 | 11 | 0 | 2 | 1 | 0 | 46 | |
| 2025 | SEA | CPX | 1 | 0 | 1.42 | 17 | 0 | 0 | 0 | 2 | 3 | 1 | 25.1 | 92 | 11 | 5 | 4 | 0 | 8 | 0 | 2 | 4 | 0 | 33 | |
| 2025 | SEA | A | 0 | 0 | 54.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 10 | 3 | 6 | 6 | 1 | 4 | 0 | 0 | 1 | 0 | 1 | |
| 2025 | SEA | MiLB | 1 | 0 | 3.42 | 18 | 0 | 0 | 0 | 2 | 3 | 1 | 26.1 | 102 | 14 | 11 | 10 | 1 | 12 | 0 | 2 | 5 | 0 | 34 | |
| 2026 | Steamer | PROJ | 0 | 0 | 5.51 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2026 | OOPSY | PROJ | 0 | 0 | 4.45 | 1 | 0 | 0 | 0 | 0 | 1.5 | 6 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||||
| 2026 | SEA | CPX | 2 | 0 | 2.56 | 13 | 8 | 0 | 0 | 1 | 0 | 0 | 45.2 | 182 | 34 | 16 | 13 | 0 | 10 | 0 | 4 | 4 | 0 | 42 | |
| 2026 | Steamer | ROS | 0 | 0 | 5.54 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2026 | OOPSY | ROS | 0 | 0 | 5.50 | 1 | 1 | 0 | 0 | 0 | 3.0 | 12 | 3 | 2 | 2 | 0 | 1 | 0 | 0 | 2 |
Preseason ProjectionsIn-Season 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 | SEA | DSL | 10.89 | 2.61 | 4.18 | 0.24 | 29.5% | 7.1% | 22.4% | .203 | 1.05 | .292 | 59.1% | 60 | 60 | 2.92 | ||||
| 2025 | SEA | CPX | 11.72 | 2.84 | 4.13 | 0.00 | 35.9% | 8.7% | 27.2% | .134 | 0.75 | .224 | 76.2% | 29 | 63 | 3.08 | ||||
| 2025 | SEA | A | 9.00 | 36.00 | 0.25 | 9.00 | 10.0% | 40.0% | -30.0% | .500 | 7.00 | .500 | 17.9% | 999 | 627 | 27.00 | ||||
| 2025 | SEA | MiLB | 11.62 | 4.10 | 2.83 | 0.34 | 33.3% | 11.8% | 21.6% | .159 | 0.99 | .245 | 63.9% | 75 | 84 | 3.98 | ||||
| 2026 | Steamer | PROJ | 6.45 | 6.11 | 1.05 | 1.37 | 15.3% | 14.6% | 0.8% | .264 | 1.72 | .289 | 70.8% | 5.86 | ||||||
| 2026 | OOPSY | PROJ | 7.20 | 3.93 | 1.83 | 1.14 | 20.5% | 11.2% | 9.3% | .235 | 1.24 | .271 | 66.0% | 4.64 | ||||||
| 2026 | SEA | CPX | 8.28 | 1.97 | 4.20 | 0.00 | 23.1% | 5.5% | 17.6% | .202 | 0.96 | .270 | 66.7% | 44 | 68 | 3.98 | ||||
| 2026 | Steamer | ROS | 5.45 | 4.88 | 1.12 | 1.50 | 13.2% | 11.8% | 1.4% | .273 | 1.63 | .287 | 69.7% | 5.83 | ||||||
| 2026 | OOPSY | ROS | 4.64 | 3.67 | 1.27 | 1.34 | 12.8% | 10.1% | 2.7% | .268 | 1.37 | .278 | 60.3% | 5.41 |
| 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 | SEA | DSL | 10.89 | 2.61 | 4.18 | 0.24 | 29.5% | 7.1% | 22.4% | .203 | 1.05 | .292 | 59.1% | 60 | 60 | 2.92 | ||||
| 2025 | SEA | CPX | 11.72 | 2.84 | 4.13 | 0.00 | 35.9% | 8.7% | 27.2% | .134 | 0.75 | .224 | 76.2% | 29 | 63 | 3.08 | ||||
| 2025 | SEA | A | 9.00 | 36.00 | 0.25 | 9.00 | 10.0% | 40.0% | -30.0% | .500 | 7.00 | .500 | 17.9% | 999 | 627 | 27.00 | ||||
| 2025 | SEA | MiLB | 11.62 | 4.10 | 2.83 | 0.34 | 33.3% | 11.8% | 21.6% | .159 | 0.99 | .245 | 63.9% | 75 | 84 | 3.98 | ||||
| 2026 | Steamer | PROJ | 6.45 | 6.11 | 1.05 | 1.37 | 15.3% | 14.6% | 0.8% | .264 | 1.72 | .289 | 70.8% | 5.86 | ||||||
| 2026 | OOPSY | PROJ | 7.20 | 3.93 | 1.83 | 1.14 | 20.5% | 11.2% | 9.3% | .235 | 1.24 | .271 | 66.0% | 4.64 | ||||||
| 2026 | SEA | CPX | 8.28 | 1.97 | 4.20 | 0.00 | 23.1% | 5.5% | 17.6% | .202 | 0.96 | .270 | 66.7% | 44 | 68 | 3.98 | ||||
| 2026 | Steamer | ROS | 5.45 | 4.88 | 1.12 | 1.50 | 13.2% | 11.8% | 1.4% | .273 | 1.63 | .287 | 69.7% | 5.83 | ||||||
| 2026 | OOPSY | ROS | 4.64 | 3.67 | 1.27 | 1.34 | 12.8% | 10.1% | 2.7% | .268 | 1.37 | .278 | 60.3% | 5.41 |

