Description 
Jonathan Hernández (born July 6, 1996) is a Dominican-American professional baseball pitcher for the Durham Bulls. He made his MLB debut in 2019.
Career
Hernández signed with the Texas Rangers as an international free agent on January 30, 2013 for a $300,000 signing bonus. He spent the 2013 and 2014 seasons playing for the Dominican Summer League Rangers. He spent the 2015 season with the Arizona Rangers of the Rookie-level Arizona League, going 1–1 with a 3.00 ERA in 45 innings. He spent the 2016 season with the Hickory Crawdads of the Class A South Atlantic League, going 10–9 with a 4.56 ERA in 116+1⁄3 innings.
Hernández started the 2017 season with the Hickory Crawdads of the Class A South Atlantic League and was promoted to the Down East Wood Ducks of the Class A-Advanced Carolina League. He was chosen to represent the Rangers in the All-Star Futures Game. He combined for a 5–11 record with a 4.03 ERA over 111+2⁄3 innings in 2017. The Rangers added him to their 40-man roster after the 2017 season. He began the 2018 season with the Wood Ducks, and received a midseason promotion to the Frisco RoughRiders of the Class AA Texas League. Hernández posted a 4–2 record with a 2.20 ERA, with 77 strikeouts in 57+1⁄3 innings in 10 games (10 starts) with the Wood Ducks. In 12 games (12 starts) with Frisco, he posted a 4–4 record with a 4.92 ERA and 57 strikeouts in 64 innings. The Rangers optioned Hernández to Frisco to open the 2019 season, and he went 5–9 with a 5.16 ERA over 96 innings with them.
The Rangers promoted Hernández to the major leagues on August 20, 2019. He made his major league debut on August 21 versus the Los Angeles Angels; pitching 2+1⁄3 scoreless innings and earning the win. Hernández finished the season with Texas, going 2–1 with a 4.32 ERA and 19 strikeouts over 16+2⁄3 innings. In 2020, he went 5–1 with a 2.90 ERA and 31 strikeouts over 31 innings for Texas.
On March 9, 2021, Hernández was shut down for at least four weeks after being diagnosed with a "low-grade" sprain of his ulnar collateral ligament in his right elbow. On March 30, 2021, Hernández was placed on the 60-day injured list. On April 12, 2021, Hernández underwent Tommy John surgery, ending his 2021 season.
Personal life
Hernández's father, Fernando Hernández, pitched in Major League Baseball. Jonathan was born in Memphis, Tennessee, when his father played baseball there, but he was raised in the Dominican Republic.
Trophies 
Milestones
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Former Senior Teams Former Club Staff Contracts Fanart 
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Statistics
| SO/BB | MLB | 2024 | 1.38 |
| SO9 | MLB | 2024 | 7.9 |
| BB9 | MLB | 2024 | 5.7 |
| HR9 | MLB | 2024 | 1.3 |
| H9 | MLB | 2024 | 8.6 |
| WHIP | MLB | 2024 | 1.585 |
| Fielding Independent Pitching | MLB | 2024 | 5.29 |
| ERA+ | MLB | 2024 | 76 |
| Batters Faced | MLB | 2024 | 181 |
| Wild Pitches | MLB | 2024 | 2 |
| Balks | MLB | 2024 | 0 |
| Home Runs Allowed | MLB | 2024 | 6 |
| Earned Runs Allowed | MLB | 2024 | 23 |
| Runs Allowed | MLB | 2024 | 25 |
| Hits Allowed | MLB | 2024 | 39 |
| Innings Pitched | MLB | 2024 | 41.0 |
| Saves | MLB | 2024 | 0 |
| Shutouts | MLB | 2024 | 0 |
| Complete Games | MLB | 2024 | 0 |
| Games Finished | MLB | 2024 | 8 |
| Games Started | MLB | 2024 | 1 |
| Games Pitched | MLB | 2024 | 26 |
| ERA | MLB | 2024 | 5.05 |
| Win-Loss Percentage | MLB | 2024 | .750 |
| Loss | MLB | 2024 | 1 |
| Wins | MLB | 2024 | 3 |
| Wins Above Replacement for Pitchers | MLB | 2024 | -0.3 |
| Positions Played | MLB | 2024 | 1 |
| Intentional Bases on Balls | MLB | 2024 | 0 |
| Sacrifice Flies | MLB | 2024 | 0 |
| Sacrifice Hits | MLB | 2024 | 0 |
| Times Hit by a Pitch | MLB | 2024 | 0 |
| GIDP | MLB | 2024 | 0 |
| Total Bases | MLB | 2024 | 0 |
| Strikeouts | MLB | 2024 | 0 |
| Bases on Balls/Walks | MLB | 2024 | 0 |
| Caught Stealing | MLB | 2024 | 0 |
| Stolen Bases | MLB | 2024 | 0 |
| Runs Batted In | MLB | 2024 | 0 |
| Home Runs | MLB | 2024 | 0 |
| Triples | MLB | 2024 | 0 |
| Doubles | MLB | 2024 | 0 |
| Hits | MLB | 2024 | 0 |
| Runs Scored | MLB | 2024 | 0 |
| At Bats | MLB | 2024 | 0 |
| Plate Appearances | MLB | 2024 | 0 |
| Games Played | MLB | 2024 | 1 |
| Wins Above Replacement for position players | MLB | 2024 | 0.0 |
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| SO/BB | MLB | 2023 | 2.27 |
| SO9 | MLB | 2023 | 9.7 |
| BB9 | MLB | 2023 | 4.3 |
| HR9 | MLB | 2023 | 1.1 |
| H9 | MLB | 2023 | 9.9 |
| WHIP | MLB | 2023 | 1.579 |
| Fielding Independent Pitching | MLB | 2023 | 4.55 |
| ERA+ | MLB | 2023 | 80 |
| Batters Faced | MLB | 2023 | 147 |
| Wild Pitches | MLB | 2023 | 2 |
| Balks | MLB | 2023 | 0 |
| Times Hit by a Pitch | MLB | 2023 | 4 |
| Strikeouts | MLB | 2023 | 34 |
| Intentional Bases on Balls | MLB | 2023 | 1 |
| Bases on Balls/Walks | MLB | 2023 | 15 |
| Home Runs Allowed | MLB | 2023 | 4 |
| Earned Runs Allowed | MLB | 2023 | 19 |
| Runs Allowed | MLB | 2023 | 20 |
| Hits Allowed | MLB | 2023 | 35 |
| Innings Pitched | MLB | 2023 | 31.2 |
| Saves | MLB | 2023 | 0 |
| Shutouts | MLB | 2023 | 0 |
| Complete Games | MLB | 2023 | 0 |
| Games Finished | MLB | 2023 | 8 |
| Games Started | MLB | 2023 | 0 |
| Games Pitched | MLB | 2023 | 33 |
| ERA | MLB | 2023 | 5.40 |
| Win-Loss Percentage | MLB | 2023 | .333 |
| Loss | MLB | 2023 | 2 |
| Wins | MLB | 2023 | 1 |
| Wins Above Replacement for Pitchers | MLB | 2023 | -0.4 |
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|
| SO/BB | MLB | 2022 | 1.59 |
| SO9 | MLB | 2022 | 8.0 |
| BB9 | MLB | 2022 | 5.0 |
| HR9 | MLB | 2022 | 0.6 |
| H9 | MLB | 2022 | 7.7 |
| WHIP | MLB | 2022 | 1.418 |
| Fielding Independent Pitching | MLB | 2022 | 3.97 |
| ERA+ | MLB | 2022 | 135 |
| Batters Faced | MLB | 2022 | 131 |
| Wild Pitches | MLB | 2022 | 5 |
| Balks | MLB | 2022 | 1 |
| Times Hit by a Pitch | MLB | 2022 | 1 |
| Strikeouts | MLB | 2022 | 27 |
| Intentional Bases on Balls | MLB | 2022 | 3 |
| Bases on Balls/Walks | MLB | 2022 | 17 |
| Home Runs Allowed | MLB | 2022 | 2 |
| Earned Runs Allowed | MLB | 2022 | 10 |
| Runs Allowed | MLB | 2022 | 14 |
| Hits Allowed | MLB | 2022 | 26 |
| Innings Pitched | MLB | 2022 | 30.1 |
| Saves | MLB | 2022 | 4 |
| Shutouts | MLB | 2022 | 0 |
| Complete Games | MLB | 2022 | 0 |
| Games Finished | MLB | 2022 | 16 |
| Games Started | MLB | 2022 | 0 |
| Games Pitched | MLB | 2022 | 29 |
| ERA | MLB | 2022 | 2.97 |
| Win-Loss Percentage | MLB | 2022 | .400 |
| Loss | MLB | 2022 | 3 |
| Wins | MLB | 2022 | 2 |
| Wins Above Replacement for Pitchers | MLB | 2022 | 0.4 |
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|
| SO/BB | MLB | 2020 | 3.88 |
| SO9 | MLB | 2020 | 9.0 |
| BB9 | MLB | 2020 | 2.3 |
| HR9 | MLB | 2020 | 0.6 |
| H9 | MLB | 2020 | 7.0 |
| WHIP | MLB | 2020 | 1.032 |
| Fielding Independent Pitching | MLB | 2020 | 3.19 |
| ERA+ | MLB | 2020 | 156 |
| Batters Faced | MLB | 2020 | 125 |
| Wild Pitches | MLB | 2020 | 0 |
| Balks | MLB | 2020 | 0 |
| Times Hit by a Pitch | MLB | 2020 | 4 |
| Strikeouts | MLB | 2020 | 31 |
| Intentional Bases on Balls | MLB | 2020 | 0 |
| Bases on Balls/Walks | MLB | 2020 | 8 |
| Home Runs Allowed | MLB | 2020 | 2 |
| Earned Runs Allowed | MLB | 2020 | 10 |
| Runs Allowed | MLB | 2020 | 10 |
| Hits Allowed | MLB | 2020 | 24 |
| Innings Pitched | MLB | 2020 | 31.0 |
| Saves | MLB | 2020 | 0 |
| Shutouts | MLB | 2020 | 0 |
| Complete Games | MLB | 2020 | 0 |
| Games Finished | MLB | 2020 | 5 |
| Games Started | MLB | 2020 | 0 |
| Games Pitched | MLB | 2020 | 27 |
| ERA | MLB | 2020 | 2.90 |
| Win-Loss Percentage | MLB | 2020 | .833 |
| Loss | MLB | 2020 | 1 |
| Wins | MLB | 2020 | 5 |
| Wins Above Replacement for Pitchers | MLB | 2020 | 0.7 |
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|
| SO/BB | MLB | 2019 | 1.46 |
| SO9 | MLB | 2019 | 10.3 |
| BB9 | MLB | 2019 | 7.0 |
| HR9 | MLB | 2019 | 1.6 |
| H9 | MLB | 2019 | 7.6 |
| WHIP | MLB | 2019 | 1.620 |
| Fielding Independent Pitching | MLB | 2019 | 5.61 |
| ERA+ | MLB | 2019 | 122 |
| Batters Faced | MLB | 2019 | 78 |
| Wild Pitches | MLB | 2019 | 1 |
| Balks | MLB | 2019 | 0 |
| Times Hit by a Pitch | MLB | 2019 | 0 |
| Strikeouts | MLB | 2019 | 19 |
| Intentional Bases on Balls | MLB | 2019 | 0 |
| Bases on Balls/Walks | MLB | 2019 | 13 |
| Home Runs Allowed | MLB | 2019 | 3 |
| Earned Runs Allowed | MLB | 2019 | 8 |
| Runs Allowed | MLB | 2019 | 10 |
| Hits Allowed | MLB | 2019 | 14 |
| Innings Pitched | MLB | 2019 | 16.2 |
| Saves | MLB | 2019 | 0 |
| Shutouts | MLB | 2019 | 0 |
| Complete Games | MLB | 2019 | 0 |
| Games Finished | MLB | 2019 | 1 |
| Games Started | MLB | 2019 | 2 |
| Games Pitched | MLB | 2019 | 9 |
| ERA | MLB | 2019 | 4.32 |
| Win-Loss Percentage | MLB | 2019 | .667 |
| Loss | MLB | 2019 | 1 |
| Wins | MLB | 2019 | 2 |
| Wins Above Replacement for Pitchers | MLB | 2019 | 0.3 |
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