Jacob Kostyshock
Free Agent (AA)P
Age: 26
Bats/Throws: R/R
6'4" / 175
DOB: 1/2/1998
(26 years, 6 months, 22 days)
P
Quick Links
More
Stats
Stat Groups:
Select
You can shift + click on full MLB seasons in Season Stats and games in Game Logs to select spans for aggregate stats. Read more here
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring Training
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | COL | R | 21 | 2 | 1 | 0 | 14 | 0 | 16.1 | 9.37 | 1.10 | 0.55 | .250 | 80.9% | 39.5% | 6.7% | 1.65 | 3.50 | 4.03 | ||||||
| 2021 | COL | CPX | 23 | 0 | 0 | 0 | 3 | 2 | 2.1 | 0.00 | 7.71 | 3.86 | .455 | 65.8% | 41.7% | 20.0% | 15.43 | 13.90 | 11.01 | ||||||
| 2023 | COL | A+ | 25 | 0 | 0 | 1 | 9 | 0 | 11.0 | 11.45 | 1.64 | 0.00 | .321 | 71.4% | 50.0% | 0.0% | 3.27 | 2.52 | 3.58 | ||||||
| 2023 | COL | AA | 25 | 0 | 1 | 0 | 14 | 0 | 14.0 | 8.36 | 7.07 | 0.64 | .297 | 61.0% | 56.8% | 8.3% | 7.07 | 5.35 | 5.66 | ||||||
| 2024 | Steamer Steamer | PROJ | 26 | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.49 | 4.27 | 1.43 | .315 | 68.7% | 43.6% | 5.46 | 5.25 | 5.01 | 0.0 | ||||||
| 2024 | ZiPS ZiPS | PROJ | 26 | 0 | 1 | 0 | 22 | 0 | 22.0 | 6.55 | 4.50 | 1.64 | .304 | 65.8% | 6.14 | 6.35 | -0.3 | ||||||||
| 2024 | COL | CPX | 26 | 0 | 0 | 0 | 1 | 0 | 0.2 | 13.50 | 13.50 | 0.00 | .333 | 33.3% | 50.0% | 0.0% | 13.50 | 10.72 | 12.16 | ||||||
| 2024 | COL | AA | 26 | 0 | 0 | 0 | 7 | 0 | 9.1 | 7.71 | 9.64 | 2.89 | .345 | 61.4% | 25.0% | 20.0% | 11.57 | 10.37 | 8.26 | ||||||
| 2024 | Steamer Steamer (RoS) | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.20 | 4.56 | 1.27 | .296 | 70.5% | 4.98 | 5.09 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | COL | R | 21 | 2 | 1 | 0 | 14 | 0 | 16.1 | 9.37 | 1.10 | 0.55 | .250 | 80.9% | 39.5% | 6.7% | 1.65 | 3.50 | 4.03 | ||||||
| 2021 | COL | CPX | 23 | 0 | 0 | 0 | 3 | 2 | 2.1 | 0.00 | 7.71 | 3.86 | .455 | 65.8% | 41.7% | 20.0% | 15.43 | 13.90 | 11.01 | ||||||
| 2023 | COL | A+ | 25 | 0 | 0 | 1 | 9 | 0 | 11.0 | 11.45 | 1.64 | 0.00 | .321 | 71.4% | 50.0% | 0.0% | 3.27 | 2.52 | 3.58 | ||||||
| 2023 | COL | AA | 25 | 0 | 1 | 0 | 14 | 0 | 14.0 | 8.36 | 7.07 | 0.64 | .297 | 61.0% | 56.8% | 8.3% | 7.07 | 5.35 | 5.66 | ||||||
| 2024 | Steamer Steamer | PROJ | 26 | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.49 | 4.27 | 1.43 | .315 | 68.7% | 43.6% | 5.46 | 5.25 | 5.01 | 0.0 | ||||||
| 2024 | ZiPS ZiPS | PROJ | 26 | 0 | 1 | 0 | 22 | 0 | 22.0 | 6.55 | 4.50 | 1.64 | .304 | 65.8% | 6.14 | 6.35 | -0.3 | ||||||||
| 2024 | COL | CPX | 26 | 0 | 0 | 0 | 1 | 0 | 0.2 | 13.50 | 13.50 | 0.00 | .333 | 33.3% | 50.0% | 0.0% | 13.50 | 10.72 | 12.16 | ||||||
| 2024 | COL | AA | 26 | 0 | 0 | 0 | 7 | 0 | 9.1 | 7.71 | 9.64 | 2.89 | .345 | 61.4% | 25.0% | 20.0% | 11.57 | 10.37 | 8.26 | ||||||
| 2024 | Steamer Steamer (RoS) | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.20 | 4.56 | 1.27 | .296 | 70.5% | 4.98 | 5.09 | 0.0 |
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring Training
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | COL | R | 2 | 1 | 1.65 | 14 | 0 | 0 | 0 | 0 | 3 | 1 | 16.1 | 62 | 11 | 4 | 3 | 1 | 2 | 0 | 2 | 0 | 0 | 17 | |
| 2021 | COL | CPX | 0 | 0 | 15.43 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 2.1 | 15 | 6 | 4 | 4 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | |
| 2023 | COL | A+ | 0 | 0 | 3.27 | 9 | 0 | 0 | 0 | 1 | 4 | 0 | 11.0 | 47 | 9 | 4 | 4 | 0 | 2 | 0 | 3 | 0 | 0 | 14 | |
| 2023 | COL | AA | 0 | 1 | 7.07 | 14 | 0 | 0 | 0 | 0 | 1 | 0 | 14.0 | 65 | 12 | 11 | 11 | 1 | 11 | 0 | 3 | 1 | 1 | 13 | |
| 2024 | Steamer Steamer | PROJ | 0 | 0 | 5.46 | 1 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | |||||
| 2024 | ZiPS ZiPS | PROJ | 0 | 1 | 6.14 | 22 | 0 | 0 | 0 | 22.0 | 105 | 25 | 16 | 15 | 4 | 11 | 0 | 5 | 1 | 1 | 16 | ||||
| 2024 | COL | CPX | 0 | 0 | 13.50 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 6 | 1 | 2 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | |
| 2024 | COL | AA | 0 | 0 | 11.57 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 9.1 | 54 | 13 | 13 | 12 | 3 | 10 | 0 | 4 | 2 | 1 | 8 | |
| 2024 | Steamer Steamer (RoS) | ROS | 0 | 0 | 4.98 | 1 | 0 | 0 | 0 | 0 | 0 | 1.0 | 4 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | COL | R | 2 | 1 | 1.65 | 14 | 0 | 0 | 0 | 0 | 3 | 1 | 16.1 | 62 | 11 | 4 | 3 | 1 | 2 | 0 | 2 | 0 | 0 | 17 | |
| 2021 | COL | CPX | 0 | 0 | 15.43 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 2.1 | 15 | 6 | 4 | 4 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | |
| 2023 | COL | A+ | 0 | 0 | 3.27 | 9 | 0 | 0 | 0 | 1 | 4 | 0 | 11.0 | 47 | 9 | 4 | 4 | 0 | 2 | 0 | 3 | 0 | 0 | 14 | |
| 2023 | COL | AA | 0 | 1 | 7.07 | 14 | 0 | 0 | 0 | 0 | 1 | 0 | 14.0 | 65 | 12 | 11 | 11 | 1 | 11 | 0 | 3 | 1 | 1 | 13 | |
| 2024 | Steamer Steamer | PROJ | 0 | 0 | 5.46 | 1 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | |||||
| 2024 | ZiPS ZiPS | PROJ | 0 | 1 | 6.14 | 22 | 0 | 0 | 0 | 22.0 | 105 | 25 | 16 | 15 | 4 | 11 | 0 | 5 | 1 | 1 | 16 | ||||
| 2024 | COL | CPX | 0 | 0 | 13.50 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 6 | 1 | 2 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | |
| 2024 | COL | AA | 0 | 0 | 11.57 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 9.1 | 54 | 13 | 13 | 12 | 3 | 10 | 0 | 4 | 2 | 1 | 8 | |
| 2024 | Steamer Steamer (RoS) | ROS | 0 | 0 | 4.98 | 1 | 0 | 0 | 0 | 0 | 0 | 1.0 | 4 | 1 | 1 | 1 | 0 | 1 | 0 | 1 |
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingAverages
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | COL | R | 9.37 | 1.10 | 8.50 | 0.55 | 27.4% | 3.2% | 24.2% | .190 | 0.80 | .250 | 80.9% | 3.50 | ||||||
| 2021 | COL | CPX | 0.00 | 7.71 | 0.00 | 3.86 | 0.0% | 13.3% | -13.3% | .500 | 3.43 | .455 | 65.8% | 13.90 | ||||||
| 2023 | COL | A+ | 11.45 | 1.64 | 7.00 | 0.00 | 29.8% | 4.3% | 25.5% | .214 | 1.00 | .321 | 71.4% | 2.52 | ||||||
| 2023 | COL | AA | 8.36 | 7.07 | 1.18 | 0.64 | 20.0% | 16.9% | 3.1% | .235 | 1.64 | .297 | 61.0% | 5.35 | ||||||
| 2024 | Steamer Steamer | PROJ | 7.49 | 4.27 | 1.75 | 1.43 | 18.4% | 10.5% | 7.9% | .276 | 1.58 | .315 | 68.7% | 5.25 | ||||||
| 2024 | ZiPS ZiPS | PROJ | 6.55 | 4.50 | 1.45 | 1.64 | 15.2% | 10.5% | 4.8% | .281 | 1.64 | .304 | 65.8% | 6.35 | ||||||
| 2024 | COL | CPX | 13.50 | 13.50 | 1.00 | 0.00 | 16.7% | 16.7% | 0.0% | .250 | 3.00 | .333 | 33.3% | 10.72 | ||||||
| 2024 | COL | AA | 7.71 | 9.64 | 0.80 | 2.89 | 14.8% | 18.5% | -3.7% | .325 | 2.46 | .345 | 61.4% | 10.37 | ||||||
| 2024 | Steamer Steamer (RoS) | ROS | 7.20 | 4.56 | 1.58 | 1.27 | 17.8% | 11.3% | 6.5% | .261 | 1.53 | .296 | 70.5% | 5.09 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | COL | R | 9.37 | 1.10 | 8.50 | 0.55 | 27.4% | 3.2% | 24.2% | .190 | 0.80 | .250 | 80.9% | 3.50 | ||||||
| 2021 | COL | CPX | 0.00 | 7.71 | 0.00 | 3.86 | 0.0% | 13.3% | -13.3% | .500 | 3.43 | .455 | 65.8% | 13.90 | ||||||
| 2023 | COL | A+ | 11.45 | 1.64 | 7.00 | 0.00 | 29.8% | 4.3% | 25.5% | .214 | 1.00 | .321 | 71.4% | 2.52 | ||||||
| 2023 | COL | AA | 8.36 | 7.07 | 1.18 | 0.64 | 20.0% | 16.9% | 3.1% | .235 | 1.64 | .297 | 61.0% | 5.35 | ||||||
| 2024 | Steamer Steamer | PROJ | 7.49 | 4.27 | 1.75 | 1.43 | 18.4% | 10.5% | 7.9% | .276 | 1.58 | .315 | 68.7% | 5.25 | ||||||
| 2024 | ZiPS ZiPS | PROJ | 6.55 | 4.50 | 1.45 | 1.64 | 15.2% | 10.5% | 4.8% | .281 | 1.64 | .304 | 65.8% | 6.35 | ||||||
| 2024 | COL | CPX | 13.50 | 13.50 | 1.00 | 0.00 | 16.7% | 16.7% | 0.0% | .250 | 3.00 | .333 | 33.3% | 10.72 | ||||||
| 2024 | COL | AA | 7.71 | 9.64 | 0.80 | 2.89 | 14.8% | 18.5% | -3.7% | .325 | 2.46 | .345 | 61.4% | 10.37 | ||||||
| 2024 | Steamer Steamer (RoS) | ROS | 7.20 | 4.56 | 1.58 | 1.27 | 17.8% | 11.3% | 6.5% | .261 | 1.53 | .296 | 70.5% | 5.09 |
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring Training
| Season | Team | Level | Age | divider | W W - Wins | L L - Losses | G G - Games Pitched | GS GS - Games Started | IP IP - Innings Pitched | divider | H H - Hits Allowed | R R - Runs Allowed | ER ER - Earned Runs | HR HR - Home Runs | BB BB - Walks | SO SO - Strikeouts | divider | 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 | 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 - Earned Run Average ((ER*9)/IP) | FIP FIP - Fielder Independent Pitching on an ERA scale | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | ZiPS ZiPS | PROJ | 26 | 0 | 1 | 22 | 0 | 22.0 | 25 | 16 | 15 | 4 | 11 | 16 | 6.55 | 4.50 | 1.45 | 1.64 | .281 | 1.64 | .304 | 65.8% | 6.14 | 6.35 | -0.3 | |||||
| 2025 | ZiPS ZiPS | PROJ | 27 | 0 | 1 | 27 | 0 | 27.7 | 29 | 19 | 18 | 4 | 13 | 20 | 6.50 | 4.22 | 1.54 | 1.30 | .266 | 1.52 | .294 | 63.2% | 5.85 | 5.75 | -0.2 | |||||
| 2026 | ZiPS ZiPS | PROJ | 28 | 1 | 1 | 32 | 0 | 33.0 | 35 | 22 | 21 | 5 | 15 | 24 | 6.55 | 4.09 | 1.60 | 1.36 | .271 | 1.52 | .300 | 65.1% | 5.73 | 5.86 | -0.3 |
| Season | Team | Level | Age | divider | W W - Wins | L L - Losses | G G - Games Pitched | GS GS - Games Started | IP IP - Innings Pitched | divider | H H - Hits Allowed | R R - Runs Allowed | ER ER - Earned Runs | HR HR - Home Runs | BB BB - Walks | SO SO - Strikeouts | divider | 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 | 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 - Earned Run Average ((ER*9)/IP) | FIP FIP - Fielder Independent Pitching on an ERA scale | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | ZiPS ZiPS | PROJ | 26 | 0 | 1 | 22 | 0 | 22.0 | 25 | 16 | 15 | 4 | 11 | 16 | 6.55 | 4.50 | 1.45 | 1.64 | .281 | 1.64 | .304 | 65.8% | 6.14 | 6.35 | -0.3 | |||||
| 2025 | ZiPS ZiPS | PROJ | 27 | 0 | 1 | 27 | 0 | 27.7 | 29 | 19 | 18 | 4 | 13 | 20 | 6.50 | 4.22 | 1.54 | 1.30 | .266 | 1.52 | .294 | 63.2% | 5.85 | 5.75 | -0.2 | |||||
| 2026 | ZiPS ZiPS | PROJ | 28 | 1 | 1 | 32 | 0 | 33.0 | 35 | 22 | 21 | 5 | 15 | 24 | 6.55 | 4.09 | 1.60 | 1.36 | .271 | 1.52 | .300 | 65.1% | 5.73 | 5.86 | -0.3 |
