Jonathan Paul Heasley (born January 27, 1997) is an American professional baseball pitcher. He has previously played in MLB for the Kansas City Royals.
Career
Heasley attended Prestonwood Christian Academy in Plano, Texas and Oklahoma State University–Stillwater. He played college baseball for the Oklahoma State Cowboys. The Kansas City Royals selected Heasley in the 13th round of the 2018 Major League Baseball draft.
Heasley made his professional debut with the Idaho Falls Chukars. He pitched 2019 with the Lexington Legends and did not play a minor league game in 2020 because the season was cancelled due to the COVID-19 pandemic. He started 2021 with the Northwest Arkansas Naturals.
On September 17, Heasley's contract was selected to the active roster to make his major league debut that night.
He was designated for assignment by the Orioles on July 24, 2024. Heasley was released by the organization the next day.
Trophies 
Milestones
Former Youth Teams
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| SO/BB | MLB | 2024 | 1.33 |
| SO9 | MLB | 2024 | 6.8 |
| BB9 | MLB | 2024 | 5.1 |
| HR9 | MLB | 2024 | 3.4 |
| H9 | MLB | 2024 | 16.9 |
| WHIP | MLB | 2024 | 2.438 |
| Fielding Independent Pitching | MLB | 2024 | 8.79 |
| ERA+ | MLB | 2024 | 25 |
| Batters Faced | MLB | 2024 | 29 |
| Wild Pitches | MLB | 2024 | 1 |
| Balks | MLB | 2024 | 0 |
| Home Runs Allowed | MLB | 2024 | 2 |
| Earned Runs Allowed | MLB | 2024 | 10 |
| Runs Allowed | MLB | 2024 | 11 |
| Hits Allowed | MLB | 2024 | 10 |
| Innings Pitched | MLB | 2024 | 5.1 |
| Saves | MLB | 2024 | 0 |
| Shutouts | MLB | 2024 | 0 |
| Complete Games | MLB | 2024 | 0 |
| Games Finished | MLB | 2024 | 2 |
| Games Started | MLB | 2024 | 0 |
| Games Pitched | MLB | 2024 | 4 |
| ERA | MLB | 2024 | 16.88 |
| Win-Loss Percentage | MLB | 2024 | .000 |
| Loss | MLB | 2024 | 1 |
| Wins | MLB | 2024 | 0 |
| Wins Above Replacement for Pitchers | MLB | 2024 | -0.6 |
| 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 |
|
|
| SO/BB | MLB | 2023 | 4.50 |
| SO9 | MLB | 2023 | 5.4 |
| BB9 | MLB | 2023 | 1.2 |
| HR9 | MLB | 2023 | 3.0 |
| H9 | MLB | 2023 | 10.2 |
| WHIP | MLB | 2023 | 1.267 |
| Fielding Independent Pitching | MLB | 2023 | 6.99 |
| ERA+ | MLB | 2023 | 63 |
| Batters Faced | MLB | 2023 | 63 |
| Wild Pitches | MLB | 2023 | 1 |
| Balks | MLB | 2023 | 0 |
| Home Runs Allowed | MLB | 2023 | 5 |
| Earned Runs Allowed | MLB | 2023 | 12 |
| Runs Allowed | MLB | 2023 | 13 |
| Hits Allowed | MLB | 2023 | 17 |
| Innings Pitched | MLB | 2023 | 15.0 |
| Saves | MLB | 2023 | 0 |
| Shutouts | MLB | 2023 | 0 |
| Complete Games | MLB | 2023 | 0 |
| Games Finished | MLB | 2023 | 5 |
| Games Started | MLB | 2023 | 0 |
| Games Pitched | MLB | 2023 | 12 |
| ERA | MLB | 2023 | 7.20 |
| Loss | MLB | 2023 | 0 |
| Wins | MLB | 2023 | 0 |
| Wins Above Replacement for Pitchers | MLB | 2023 | -0.3 |
| Positions Played | MLB | 2023 | 1 |
| Intentional Bases on Balls | MLB | 2023 | 0 |
| Sacrifice Flies | MLB | 2023 | 0 |
| Sacrifice Hits | MLB | 2023 | 0 |
| Times Hit by a Pitch | MLB | 2023 | 0 |
| GIDP | MLB | 2023 | 0 |
| Total Bases | MLB | 2023 | 0 |
| Strikeouts | MLB | 2023 | 0 |
| Bases on Balls/Walks | MLB | 2023 | 0 |
| Caught Stealing | MLB | 2023 | 0 |
| Stolen Bases | MLB | 2023 | 0 |
| Runs Batted In | MLB | 2023 | 0 |
| Home Runs | MLB | 2023 | 0 |
| Triples | MLB | 2023 | 0 |
| Doubles | MLB | 2023 | 0 |
| Hits | MLB | 2023 | 0 |
| Runs Scored | MLB | 2023 | 0 |
| At Bats | MLB | 2023 | 0 |
| Plate Appearances | MLB | 2023 | 0 |
| Games Played | MLB | 2023 | 1 |
| Wins Above Replacement for position players | MLB | 2023 | 0.0 |
|
|
| SO/BB | MLB | 2022 | 1.49 |
| SO9 | MLB | 2022 | 6.1 |
| BB9 | MLB | 2022 | 4.1 |
| HR9 | MLB | 2022 | 1.6 |
| H9 | MLB | 2022 | 9.3 |
| WHIP | MLB | 2022 | 1.490 |
| Fielding Independent Pitching | MLB | 2022 | 5.67 |
| ERA+ | MLB | 2022 | 78 |
| Batters Faced | MLB | 2022 | 465 |
| Wild Pitches | MLB | 2022 | 9 |
| Balks | MLB | 2022 | 0 |
| Times Hit by a Pitch | MLB | 2022 | 6 |
| Strikeouts | MLB | 2022 | 70 |
| Intentional Bases on Balls | MLB | 2022 | 0 |
| Bases on Balls/Walks | MLB | 2022 | 47 |
| Home Runs Allowed | MLB | 2022 | 19 |
| Earned Runs Allowed | MLB | 2022 | 61 |
| Runs Allowed | MLB | 2022 | 67 |
| Hits Allowed | MLB | 2022 | 108 |
| Innings Pitched | MLB | 2022 | 104.0 |
| Saves | MLB | 2022 | 0 |
| Shutouts | MLB | 2022 | 0 |
| Complete Games | MLB | 2022 | 0 |
| Games Finished | MLB | 2022 | 0 |
| Games Started | MLB | 2022 | 21 |
| Games Pitched | MLB | 2022 | 21 |
| ERA | MLB | 2022 | 5.28 |
| Win-Loss Percentage | MLB | 2022 | .286 |
| Loss | MLB | 2022 | 10 |
| Wins | MLB | 2022 | 4 |
| Wins Above Replacement for Pitchers | MLB | 2022 | -0.1 |
|
|
| SO/BB | MLB | 2021 | 2.00 |
| SO9 | MLB | 2021 | 3.7 |
| BB9 | MLB | 2021 | 1.8 |
| HR9 | MLB | 2021 | 1.8 |
| H9 | MLB | 2021 | 9.2 |
| WHIP | MLB | 2021 | 1.227 |
| Fielding Independent Pitching | MLB | 2021 | 6.03 |
| ERA+ | MLB | 2021 | 95 |
| Batters Faced | MLB | 2021 | 59 |
| Wild Pitches | MLB | 2021 | 0 |
| Balks | MLB | 2021 | 0 |
| Times Hit by a Pitch | MLB | 2021 | 2 |
| Strikeouts | MLB | 2021 | 6 |
| Intentional Bases on Balls | MLB | 2021 | 0 |
| Bases on Balls/Walks | MLB | 2021 | 3 |
| Home Runs Allowed | MLB | 2021 | 3 |
| Earned Runs Allowed | MLB | 2021 | 8 |
| Runs Allowed | MLB | 2021 | 8 |
| Hits Allowed | MLB | 2021 | 15 |
| Innings Pitched | MLB | 2021 | 14.2 |
| Saves | MLB | 2021 | 0 |
| Shutouts | MLB | 2021 | 0 |
| Complete Games | MLB | 2021 | 0 |
| Games Finished | MLB | 2021 | 0 |
| Games Started | MLB | 2021 | 3 |
| Games Pitched | MLB | 2021 | 3 |
| ERA | MLB | 2021 | 4.91 |
| Win-Loss Percentage | MLB | 2021 | .500 |
| Loss | MLB | 2021 | 1 |
| Wins | MLB | 2021 | 1 |
| Wins Above Replacement for Pitchers | MLB | 2021 | 0.1 |
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Plano, TX, United States
Baseball
