Jose Zerpa
Seattle Mariners (A)P
Age: 20
Bats/Throws: R/R
6'2" / 180
DOB: 10/19/2004
(20 years, 9 months, 14 days)
P
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Preseason ProjectionsIn-Season ProjectionsMinor Leagues
| Season | Team | Level | Age | W W - Wins | L L - Losses | SV SV - Saves | G G - Games Pitched | GS GS - Games Started | IP IP - Innings Pitched | divider | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | GB% GB% - Ground Ball Percentage (GB/BIP) | HR/FB HR/FB - Home Run to Fly Ball Ratio | divider | vFA vFA - Fourseam Fastball velocity (Pitch Info) | divider | ERA ERA - Earned Run Average ((ER*9)/IP) | xERA xERA - Expected ERA | FIP FIP - Fielder Independent Pitching on an ERA scale | xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 18 | 3 | 2 | 1 | 12 | 0 | 23.1 | 13.11 | 3.09 | 0.00 | .296 | 62.5% | 48.1% | 0.0% | 2.70 | 2.09 | 2.65 | ||||||
| 2024 | SEA | CPX | 19 | 1 | 1 | 1 | 10 | 0 | 10.2 | 7.59 | 5.91 | 0.84 | .387 | 71.4% | 25.0% | 7.1% | 4.22 | 6.48 | 6.49 | ||||||
| 2025 | OOPSY | PROJ | 20 | 0 | 0 | 0 | 1 | 0 | 1.0 | 5.83 | 5.25 | 1.65 | .279 | 68.5% | 5.86 | 6.18 | 0.0 | ||||||||
| 2025 | SEA | CPX | 20 | 0 | 0 | 1 | 3 | 0 | 3.2 | 9.82 | 9.82 | 0.00 | .143 | 100.0% | 28.6% | 0.0% | 0.00 | 5.59 | 6.81 | ||||||
| 2025 | SEA | A | 20 | 1 | 0 | 2 | 17 | 0 | 30.2 | 8.22 | 1.76 | 0.59 | .310 | 77.6% | 32.2% | 5.4% | 2.64 | 3.60 | 3.77 | ||||||
| 2025 | SEA | A+ | 20 | 0 | 0 | 0 | 4 | 0 | 6.1 | 4.26 | 2.84 | 0.00 | .211 | 33.3% | 52.6% | 0.0% | 5.68 | 3.42 | 4.80 | ||||||
| 2025 | SEA | MiLB | 20 | 1 | 0 | 3 | 24 | 0 | 40.2 | 7.75 | 2.66 | 0.44 | .283 | 74.1% | 35.4% | 4.2% | 2.88 | 3.75 | 4.20 | ||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 5.91 | 5.05 | 1.44 | .287 | 70.6% | 5.36 | 5.67 | 0.0 | |||||||||
| 2025 | OOPSY | ROS | 20 | 0 | 0 | 0 | 1 | 0 | 1.5 | 5.66 | 3.86 | 1.47 | .267 | 64.7% | 5.24 | 5.47 | 0.0 |
| Season | Team | Level | Age | W W - Wins | L L - Losses | SV SV - Saves | G G - Games Pitched | GS GS - Games Started | IP IP - Innings Pitched | divider | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | GB% GB% - Ground Ball Percentage (GB/BIP) | HR/FB HR/FB - Home Run to Fly Ball Ratio | divider | vFA vFA - Fourseam Fastball velocity (Pitch Info) | divider | ERA ERA - Earned Run Average ((ER*9)/IP) | xERA xERA - Expected ERA | FIP FIP - Fielder Independent Pitching on an ERA scale | xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 18 | 3 | 2 | 1 | 12 | 0 | 23.1 | 13.11 | 3.09 | 0.00 | .296 | 62.5% | 48.1% | 0.0% | 2.70 | 2.09 | 2.65 | ||||||
| 2024 | SEA | CPX | 19 | 1 | 1 | 1 | 10 | 0 | 10.2 | 7.59 | 5.91 | 0.84 | .387 | 71.4% | 25.0% | 7.1% | 4.22 | 6.48 | 6.49 | ||||||
| 2025 | OOPSY | PROJ | 20 | 0 | 0 | 0 | 1 | 0 | 1.0 | 5.83 | 5.25 | 1.65 | .279 | 68.5% | 5.86 | 6.18 | 0.0 | ||||||||
| 2025 | SEA | CPX | 20 | 0 | 0 | 1 | 3 | 0 | 3.2 | 9.82 | 9.82 | 0.00 | .143 | 100.0% | 28.6% | 0.0% | 0.00 | 5.59 | 6.81 | ||||||
| 2025 | SEA | A | 20 | 1 | 0 | 2 | 17 | 0 | 30.2 | 8.22 | 1.76 | 0.59 | .310 | 77.6% | 32.2% | 5.4% | 2.64 | 3.60 | 3.77 | ||||||
| 2025 | SEA | A+ | 20 | 0 | 0 | 0 | 4 | 0 | 6.1 | 4.26 | 2.84 | 0.00 | .211 | 33.3% | 52.6% | 0.0% | 5.68 | 3.42 | 4.80 | ||||||
| 2025 | SEA | MiLB | 20 | 1 | 0 | 3 | 24 | 0 | 40.2 | 7.75 | 2.66 | 0.44 | .283 | 74.1% | 35.4% | 4.2% | 2.88 | 3.75 | 4.20 | ||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 5.91 | 5.05 | 1.44 | .287 | 70.6% | 5.36 | 5.67 | 0.0 | |||||||||
| 2025 | OOPSY | ROS | 20 | 0 | 0 | 0 | 1 | 0 | 1.5 | 5.66 | 3.86 | 1.47 | .267 | 64.7% | 5.24 | 5.47 | 0.0 |
Preseason ProjectionsIn-Season ProjectionsMinor Leagues
| Season | Team | Level | W W - Wins | L L - Losses | ERA ERA - Earned Run Average ((ER*9)/IP) | G G - Games Pitched | GS GS - Games Started | QS | CG CG - Complete Games | ShO ShO - Shoutouts | SV SV - Saves | HLD HLD - Holds | BS BS - Blown Saves | IP IP - Innings Pitched | TBF TBF - Total Batters Faced | H H - Hits Allowed | R R - Runs Allowed | ER ER - Earned Runs | HR HR - Home Runs | BB BB - Walks | IBB IBB - Intentional | HBP HBP - Hit Batters | WP WP - Wild Pitches | BK BK - Balks | SO SO - Strikeouts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 3 | 2 | 2.70 | 12 | 0 | 0 | 0 | 1 | 1 | 1 | 23.1 | 96 | 16 | 9 | 7 | 0 | 8 | 0 | 0 | 2 | 1 | 34 | |
| 2024 | SEA | CPX | 1 | 1 | 4.22 | 10 | 0 | 0 | 0 | 1 | 1 | 2 | 10.2 | 49 | 13 | 7 | 5 | 1 | 7 | 1 | 1 | 2 | 0 | 9 | |
| 2025 | OOPSY | PROJ | 0 | 0 | 5.86 | 1 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||||
| 2025 | SEA | CPX | 0 | 0 | 0.00 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 3.2 | 15 | 1 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 4 | |
| 2025 | SEA | A | 1 | 0 | 2.64 | 17 | 0 | 0 | 0 | 2 | 1 | 1 | 30.2 | 123 | 29 | 10 | 9 | 2 | 6 | 0 | 0 | 3 | 0 | 28 | |
| 2025 | SEA | A+ | 0 | 0 | 5.68 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 24 | 4 | 4 | 4 | 0 | 2 | 0 | 0 | 1 | 0 | 3 | |
| 2025 | SEA | MiLB | 1 | 0 | 2.88 | 24 | 0 | 0 | 0 | 3 | 1 | 1 | 40.2 | 162 | 34 | 14 | 13 | 2 | 12 | 0 | 0 | 4 | 0 | 35 | |
| 2025 | Steamer | ROS | 0 | 0 | 5.36 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2025 | OOPSY | ROS | 0 | 0 | 5.24 | 1 | 0 | 0 | 0 | 0 | 1.5 | 6 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
| Season | Team | Level | W W - Wins | L L - Losses | ERA ERA - Earned Run Average ((ER*9)/IP) | G G - Games Pitched | GS GS - Games Started | QS | CG CG - Complete Games | ShO ShO - Shoutouts | SV SV - Saves | HLD HLD - Holds | BS BS - Blown Saves | IP IP - Innings Pitched | TBF TBF - Total Batters Faced | H H - Hits Allowed | R R - Runs Allowed | ER ER - Earned Runs | HR HR - Home Runs | BB BB - Walks | IBB IBB - Intentional | HBP HBP - Hit Batters | WP WP - Wild Pitches | BK BK - Balks | SO SO - Strikeouts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 3 | 2 | 2.70 | 12 | 0 | 0 | 0 | 1 | 1 | 1 | 23.1 | 96 | 16 | 9 | 7 | 0 | 8 | 0 | 0 | 2 | 1 | 34 | |
| 2024 | SEA | CPX | 1 | 1 | 4.22 | 10 | 0 | 0 | 0 | 1 | 1 | 2 | 10.2 | 49 | 13 | 7 | 5 | 1 | 7 | 1 | 1 | 2 | 0 | 9 | |
| 2025 | OOPSY | PROJ | 0 | 0 | 5.86 | 1 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||||
| 2025 | SEA | CPX | 0 | 0 | 0.00 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 3.2 | 15 | 1 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 4 | |
| 2025 | SEA | A | 1 | 0 | 2.64 | 17 | 0 | 0 | 0 | 2 | 1 | 1 | 30.2 | 123 | 29 | 10 | 9 | 2 | 6 | 0 | 0 | 3 | 0 | 28 | |
| 2025 | SEA | A+ | 0 | 0 | 5.68 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 24 | 4 | 4 | 4 | 0 | 2 | 0 | 0 | 1 | 0 | 3 | |
| 2025 | SEA | MiLB | 1 | 0 | 2.88 | 24 | 0 | 0 | 0 | 3 | 1 | 1 | 40.2 | 162 | 34 | 14 | 13 | 2 | 12 | 0 | 0 | 4 | 0 | 35 | |
| 2025 | Steamer | ROS | 0 | 0 | 5.36 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2025 | OOPSY | ROS | 0 | 0 | 5.24 | 1 | 0 | 0 | 0 | 0 | 1.5 | 6 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesAverages
| Season | Team | Level | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | K/BB K/BB - Strikeout to Walk Ratio (SO/BB) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | divider | K% K% - Strikeout Percentage (SO/TBF) | BB% BB% - Walk Percentage (BB/TBF) | K-BB% K-BB% - The difference between strikeout percentage and walk percentage | divider | AVG AVG - Batting Average Against | WHIP WHIP - Walks + Hits divided by Innings Pitched | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | divider | ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better | FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better | divider | FIP FIP - Fielder Independent Pitching on an ERA scale |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 13.11 | 3.09 | 4.25 | 0.00 | 35.4% | 8.3% | 27.1% | .182 | 1.03 | .296 | 62.5% | 58 | 43 | 2.09 | ||||
| 2024 | SEA | CPX | 7.59 | 5.91 | 1.29 | 0.84 | 18.4% | 14.3% | 4.1% | .317 | 1.88 | .387 | 71.4% | 82 | 122 | 6.48 | ||||
| 2025 | OOPSY | PROJ | 5.83 | 5.25 | 1.11 | 1.65 | 13.5% | 12.1% | 1.3% | .268 | 1.70 | .279 | 68.5% | 6.18 | ||||||
| 2025 | SEA | CPX | 9.82 | 9.82 | 1.00 | 0.00 | 26.7% | 26.7% | 0.0% | .091 | 1.36 | .143 | 100.0% | 0 | 112 | 5.59 | ||||
| 2025 | SEA | A | 8.22 | 1.76 | 4.67 | 0.59 | 22.8% | 4.9% | 17.9% | .248 | 1.14 | .310 | 77.6% | 60 | 84 | 3.60 | ||||
| 2025 | SEA | A+ | 4.26 | 2.84 | 1.50 | 0.00 | 12.5% | 8.3% | 4.2% | .182 | 0.95 | .211 | 33.3% | 119 | 72 | 3.42 | ||||
| 2025 | SEA | MiLB | 7.75 | 2.66 | 2.92 | 0.44 | 21.6% | 7.4% | 14.2% | .227 | 1.13 | .283 | 74.1% | 64 | 85 | 3.75 | ||||
| 2025 | Steamer | ROS | 5.91 | 5.05 | 1.17 | 1.44 | 14.4% | 12.3% | 2.1% | .268 | 1.62 | .287 | 70.6% | 5.67 | ||||||
| 2025 | OOPSY | ROS | 5.66 | 3.86 | 1.47 | 1.47 | 14.9% | 10.2% | 4.7% | .254 | 1.38 | .267 | 64.7% | 5.47 |
| Season | Team | Level | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | K/BB K/BB - Strikeout to Walk Ratio (SO/BB) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | divider | K% K% - Strikeout Percentage (SO/TBF) | BB% BB% - Walk Percentage (BB/TBF) | K-BB% K-BB% - The difference between strikeout percentage and walk percentage | divider | AVG AVG - Batting Average Against | WHIP WHIP - Walks + Hits divided by Innings Pitched | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | divider | ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better | FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better | divider | FIP FIP - Fielder Independent Pitching on an ERA scale |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 13.11 | 3.09 | 4.25 | 0.00 | 35.4% | 8.3% | 27.1% | .182 | 1.03 | .296 | 62.5% | 58 | 43 | 2.09 | ||||
| 2024 | SEA | CPX | 7.59 | 5.91 | 1.29 | 0.84 | 18.4% | 14.3% | 4.1% | .317 | 1.88 | .387 | 71.4% | 82 | 122 | 6.48 | ||||
| 2025 | OOPSY | PROJ | 5.83 | 5.25 | 1.11 | 1.65 | 13.5% | 12.1% | 1.3% | .268 | 1.70 | .279 | 68.5% | 6.18 | ||||||
| 2025 | SEA | CPX | 9.82 | 9.82 | 1.00 | 0.00 | 26.7% | 26.7% | 0.0% | .091 | 1.36 | .143 | 100.0% | 0 | 112 | 5.59 | ||||
| 2025 | SEA | A | 8.22 | 1.76 | 4.67 | 0.59 | 22.8% | 4.9% | 17.9% | .248 | 1.14 | .310 | 77.6% | 60 | 84 | 3.60 | ||||
| 2025 | SEA | A+ | 4.26 | 2.84 | 1.50 | 0.00 | 12.5% | 8.3% | 4.2% | .182 | 0.95 | .211 | 33.3% | 119 | 72 | 3.42 | ||||
| 2025 | SEA | MiLB | 7.75 | 2.66 | 2.92 | 0.44 | 21.6% | 7.4% | 14.2% | .227 | 1.13 | .283 | 74.1% | 64 | 85 | 3.75 | ||||
| 2025 | Steamer | ROS | 5.91 | 5.05 | 1.17 | 1.44 | 14.4% | 12.3% | 2.1% | .268 | 1.62 | .287 | 70.6% | 5.67 | ||||||
| 2025 | OOPSY | ROS | 5.66 | 3.86 | 1.47 | 1.47 | 14.9% | 10.2% | 4.7% | .254 | 1.38 | .267 | 64.7% | 5.47 |
