Jean Herrera
Free Agent (CPX)P
Age: 24
Bats/Throws: R/R
6'0" / 178
DOB: 11/14/2000
(24 years, 6 months, 15 days)
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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | LAD | DSL | 20 | 3 | 0 | 3 | 14 | 1 | 19.0 | 11.84 | 1.42 | 0.47 | .289 | 56.8% | 26.2% | 4.5% | 2.84 | 2.57 | 2.60 | ||||||
| 2022 | ARI | CPX | 21 | 0 | 0 | 1 | 5 | 0 | 11.0 | 9.82 | 4.91 | 0.82 | .455 | 68.0% | 26.5% | 5.6% | 6.55 | 4.88 | 5.41 | ||||||
| 2022 | ARI | DSL | 21 | 5 | 1 | 1 | 13 | 0 | 33.1 | 9.99 | 0.27 | 0.27 | .277 | 85.4% | 39.0% | 3.2% | 0.81 | 2.16 | 2.43 | ||||||
| 2022 | ARI | CPX | 21 | 0 | 0 | 1 | 2 | 0 | 3.0 | 15.00 | 0.00 | 0.00 | .556 | 100.0% | 77.8% | 0.0% | 0.00 | 0.91 | 1.61 | ||||||
| 2022 | ARI | MiLB | 21 | 5 | 1 | 3 | 20 | 0 | 47.1 | 10.27 | 1.33 | 0.38 | .344 | 79.7% | 38.4% | 3.9% | 2.09 | 2.71 | 3.07 | ||||||
| 2023 | ARI | CPX | 22 | 1 | 0 | 0 | 4 | 0 | 6.1 | 11.37 | 1.42 | 2.84 | .286 | 96.8% | 25.0% | 22.2% | 4.26 | 7.93 | 5.29 | ||||||
| 2023 | ARI | CPX | 22 | 0 | 0 | 0 | 1 | 0 | 1.0 | 9.00 | 9.00 | 9.00 | .000 | 0.0% | 0.0% | 50.0% | 18.00 | 18.93 | 7.99 | ||||||
| 2023 | ARI | MiLB | 22 | 1 | 0 | 0 | 5 | 0 | 7.1 | 11.05 | 2.45 | 3.68 | .250 | 88.2% | 21.1% | 27.3% | 6.14 | 9.43 | 5.66 | ||||||
| 2025 | Steamer | PROJ | 24 | 0 | 0 | 0 | 1 | 0 | 1.0 | 4.89 | 7.87 | 1.56 | .297 | 67.8% | 39.4% | 6.97 | 7.10 | 6.96 | 0.0 | ||||||
| 2025 | OOPSY | PROJ | 24 | 0 | 0 | 0 | 1 | 0 | 1.7 | 5.61 | 4.55 | 1.63 | .301 | 64.9% | 6.18 | 5.95 | 0.0 | ||||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 4.76 | 8.09 | 1.50 | .297 | 68.0% | 6.94 | 7.01 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | LAD | DSL | 20 | 3 | 0 | 3 | 14 | 1 | 19.0 | 11.84 | 1.42 | 0.47 | .289 | 56.8% | 26.2% | 4.5% | 2.84 | 2.57 | 2.60 | ||||||
| 2022 | ARI | CPX | 21 | 0 | 0 | 1 | 5 | 0 | 11.0 | 9.82 | 4.91 | 0.82 | .455 | 68.0% | 26.5% | 5.6% | 6.55 | 4.88 | 5.41 | ||||||
| 2022 | ARI | DSL | 21 | 5 | 1 | 1 | 13 | 0 | 33.1 | 9.99 | 0.27 | 0.27 | .277 | 85.4% | 39.0% | 3.2% | 0.81 | 2.16 | 2.43 | ||||||
| 2022 | ARI | CPX | 21 | 0 | 0 | 1 | 2 | 0 | 3.0 | 15.00 | 0.00 | 0.00 | .556 | 100.0% | 77.8% | 0.0% | 0.00 | 0.91 | 1.61 | ||||||
| 2022 | ARI | MiLB | 21 | 5 | 1 | 3 | 20 | 0 | 47.1 | 10.27 | 1.33 | 0.38 | .344 | 79.7% | 38.4% | 3.9% | 2.09 | 2.71 | 3.07 | ||||||
| 2023 | ARI | CPX | 22 | 1 | 0 | 0 | 4 | 0 | 6.1 | 11.37 | 1.42 | 2.84 | .286 | 96.8% | 25.0% | 22.2% | 4.26 | 7.93 | 5.29 | ||||||
| 2023 | ARI | CPX | 22 | 0 | 0 | 0 | 1 | 0 | 1.0 | 9.00 | 9.00 | 9.00 | .000 | 0.0% | 0.0% | 50.0% | 18.00 | 18.93 | 7.99 | ||||||
| 2023 | ARI | MiLB | 22 | 1 | 0 | 0 | 5 | 0 | 7.1 | 11.05 | 2.45 | 3.68 | .250 | 88.2% | 21.1% | 27.3% | 6.14 | 9.43 | 5.66 | ||||||
| 2025 | Steamer | PROJ | 24 | 0 | 0 | 0 | 1 | 0 | 1.0 | 4.89 | 7.87 | 1.56 | .297 | 67.8% | 39.4% | 6.97 | 7.10 | 6.96 | 0.0 | ||||||
| 2025 | OOPSY | PROJ | 24 | 0 | 0 | 0 | 1 | 0 | 1.7 | 5.61 | 4.55 | 1.63 | .301 | 64.9% | 6.18 | 5.95 | 0.0 | ||||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 4.76 | 8.09 | 1.50 | .297 | 68.0% | 6.94 | 7.01 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | LAD | DSL | 3 | 0 | 2.84 | 14 | 1 | 0 | 0 | 3 | 0 | 1 | 19.0 | 76 | 14 | 9 | 6 | 1 | 3 | 0 | 2 | 1 | 2 | 25 | |
| 2022 | ARI | CPX | 0 | 0 | 6.55 | 5 | 0 | 0 | 0 | 1 | 0 | 0 | 11.0 | 52 | 16 | 8 | 8 | 1 | 6 | 0 | 0 | 0 | 1 | 12 | |
| 2022 | ARI | DSL | 5 | 1 | 0.81 | 13 | 0 | 0 | 0 | 1 | 0 | 0 | 33.1 | 123 | 24 | 5 | 3 | 1 | 1 | 0 | 1 | 2 | 2 | 37 | |
| 2022 | ARI | CPX | 0 | 0 | 0.00 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 3.0 | 14 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | |
| 2022 | ARI | MiLB | 5 | 1 | 2.09 | 20 | 0 | 0 | 0 | 3 | 0 | 0 | 47.1 | 189 | 45 | 13 | 11 | 2 | 7 | 0 | 1 | 3 | 3 | 54 | |
| 2023 | ARI | CPX | 1 | 0 | 4.26 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 27 | 6 | 3 | 3 | 2 | 1 | 0 | 2 | 0 | 0 | 8 | |
| 2023 | ARI | CPX | 0 | 0 | 18.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 2 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | |
| 2023 | ARI | MiLB | 1 | 0 | 6.14 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 7.1 | 32 | 7 | 5 | 5 | 3 | 2 | 0 | 2 | 0 | 0 | 9 | |
| 2025 | Steamer | PROJ | 0 | 0 | 6.97 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2025 | OOPSY | PROJ | 0 | 0 | 6.18 | 1 | 0 | 0 | 0 | 0 | 1.7 | 8 | 2 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||||
| 2025 | Steamer | ROS | 0 | 0 | 6.94 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | LAD | DSL | 3 | 0 | 2.84 | 14 | 1 | 0 | 0 | 3 | 0 | 1 | 19.0 | 76 | 14 | 9 | 6 | 1 | 3 | 0 | 2 | 1 | 2 | 25 | |
| 2022 | ARI | CPX | 0 | 0 | 6.55 | 5 | 0 | 0 | 0 | 1 | 0 | 0 | 11.0 | 52 | 16 | 8 | 8 | 1 | 6 | 0 | 0 | 0 | 1 | 12 | |
| 2022 | ARI | DSL | 5 | 1 | 0.81 | 13 | 0 | 0 | 0 | 1 | 0 | 0 | 33.1 | 123 | 24 | 5 | 3 | 1 | 1 | 0 | 1 | 2 | 2 | 37 | |
| 2022 | ARI | CPX | 0 | 0 | 0.00 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 3.0 | 14 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | |
| 2022 | ARI | MiLB | 5 | 1 | 2.09 | 20 | 0 | 0 | 0 | 3 | 0 | 0 | 47.1 | 189 | 45 | 13 | 11 | 2 | 7 | 0 | 1 | 3 | 3 | 54 | |
| 2023 | ARI | CPX | 1 | 0 | 4.26 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 27 | 6 | 3 | 3 | 2 | 1 | 0 | 2 | 0 | 0 | 8 | |
| 2023 | ARI | CPX | 0 | 0 | 18.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 2 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | |
| 2023 | ARI | MiLB | 1 | 0 | 6.14 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 7.1 | 32 | 7 | 5 | 5 | 3 | 2 | 0 | 2 | 0 | 0 | 9 | |
| 2025 | Steamer | PROJ | 0 | 0 | 6.97 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2025 | OOPSY | PROJ | 0 | 0 | 6.18 | 1 | 0 | 0 | 0 | 0 | 1.7 | 8 | 2 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||||
| 2025 | Steamer | ROS | 0 | 0 | 6.94 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | LAD | DSL | 11.84 | 1.42 | 8.33 | 0.47 | 32.9% | 3.9% | 28.9% | .197 | 0.89 | .289 | 56.8% | 64 | 58 | 2.57 | ||||
| 2022 | ARI | CPX | 9.82 | 4.91 | 2.00 | 0.82 | 23.1% | 11.5% | 11.5% | .348 | 2.00 | .455 | 68.0% | 154 | 110 | 4.88 | ||||
| 2022 | ARI | DSL | 9.99 | 0.27 | 37.00 | 0.27 | 30.1% | 0.8% | 29.3% | .198 | 0.75 | .277 | 85.4% | 17 | 48 | 2.16 | ||||
| 2022 | ARI | CPX | 15.00 | 0.00 | 5.00 | 0.00 | 35.7% | 0.0% | 35.7% | .357 | 1.67 | .556 | 100.0% | 0 | 21 | 0.91 | ||||
| 2022 | ARI | MiLB | 10.27 | 1.33 | 7.71 | 0.38 | 28.6% | 3.7% | 24.9% | .249 | 1.10 | .344 | 79.7% | 48 | 61 | 2.71 | ||||
| 2023 | ARI | CPX | 11.37 | 1.42 | 8.00 | 2.84 | 29.6% | 3.7% | 25.9% | .250 | 1.11 | .286 | 96.8% | 78 | 138 | 7.93 | ||||
| 2023 | ARI | CPX | 9.00 | 9.00 | 1.00 | 9.00 | 20.0% | 20.0% | 0.0% | .250 | 2.00 | .000 | 0.0% | 313 | 335 | 18.93 | ||||
| 2023 | ARI | MiLB | 11.05 | 2.45 | 4.50 | 3.68 | 28.1% | 6.3% | 21.9% | .250 | 1.23 | .250 | 88.2% | 110 | 165 | 9.43 | ||||
| 2025 | Steamer | PROJ | 4.89 | 7.87 | 0.62 | 1.56 | 11.0% | 17.7% | -6.7% | .287 | 2.03 | .297 | 67.8% | 7.10 | ||||||
| 2025 | OOPSY | PROJ | 5.61 | 4.55 | 1.23 | 1.63 | 13.5% | 10.9% | 2.6% | .286 | 1.67 | .301 | 64.9% | 5.95 | ||||||
| 2025 | Steamer | ROS | 4.76 | 8.09 | 0.59 | 1.50 | 10.6% | 18.1% | -7.4% | .287 | 2.05 | .297 | 68.0% | 7.01 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | LAD | DSL | 11.84 | 1.42 | 8.33 | 0.47 | 32.9% | 3.9% | 28.9% | .197 | 0.89 | .289 | 56.8% | 64 | 58 | 2.57 | ||||
| 2022 | ARI | CPX | 9.82 | 4.91 | 2.00 | 0.82 | 23.1% | 11.5% | 11.5% | .348 | 2.00 | .455 | 68.0% | 154 | 110 | 4.88 | ||||
| 2022 | ARI | DSL | 9.99 | 0.27 | 37.00 | 0.27 | 30.1% | 0.8% | 29.3% | .198 | 0.75 | .277 | 85.4% | 17 | 48 | 2.16 | ||||
| 2022 | ARI | CPX | 15.00 | 0.00 | 5.00 | 0.00 | 35.7% | 0.0% | 35.7% | .357 | 1.67 | .556 | 100.0% | 0 | 21 | 0.91 | ||||
| 2022 | ARI | MiLB | 10.27 | 1.33 | 7.71 | 0.38 | 28.6% | 3.7% | 24.9% | .249 | 1.10 | .344 | 79.7% | 48 | 61 | 2.71 | ||||
| 2023 | ARI | CPX | 11.37 | 1.42 | 8.00 | 2.84 | 29.6% | 3.7% | 25.9% | .250 | 1.11 | .286 | 96.8% | 78 | 138 | 7.93 | ||||
| 2023 | ARI | CPX | 9.00 | 9.00 | 1.00 | 9.00 | 20.0% | 20.0% | 0.0% | .250 | 2.00 | .000 | 0.0% | 313 | 335 | 18.93 | ||||
| 2023 | ARI | MiLB | 11.05 | 2.45 | 4.50 | 3.68 | 28.1% | 6.3% | 21.9% | .250 | 1.23 | .250 | 88.2% | 110 | 165 | 9.43 | ||||
| 2025 | Steamer | PROJ | 4.89 | 7.87 | 0.62 | 1.56 | 11.0% | 17.7% | -6.7% | .287 | 2.03 | .297 | 67.8% | 7.10 | ||||||
| 2025 | OOPSY | PROJ | 5.61 | 4.55 | 1.23 | 1.63 | 13.5% | 10.9% | 2.6% | .286 | 1.67 | .301 | 64.9% | 5.95 | ||||||
| 2025 | Steamer | ROS | 4.76 | 8.09 | 0.59 | 1.50 | 10.6% | 18.1% | -7.4% | .287 | 2.05 | .297 | 68.0% | 7.01 |
