Kristofer Bubic (born August 19, 1997) is an American professional baseball pitcher for the Kansas City Royals of Major League Baseball (MLB).
Amateur career
Bubic attended Archbishop Mitty High School in San Jose, California, where he played football and baseball, and he graduated in 2015. As a junior, he was 8–2 with a 0.89 ERA, and as a senior, he compiled a 1.20 ERA and struck out 82 batters in 70 innings pitched. He was not drafted out of high school in the 2015 Major League Baseball draft and he enrolled at Stanford University where he played college baseball for the Stanford Cardinal.
As a freshman at Stanford in 2016, Bubic was 0–3 with a 3.26 ERA in 21 games (six starts). In 2017, as a sophomore, he started 15 games and posted a 7–6 record and 2.79 ERA with 96 strikeouts in 90 innings. After the season, he played in the Cape Cod Baseball League for the Yarmouth–Dennis Red Sox, earning Pitcher of the Year honors after going 4–1 with a 1.65 ERA in 32+2⁄3 innings. As a junior in 2018, he went 8–1 with a 2.62 ERA and was named to the Pac-12 All-Conference Team.

Trophies 
Milestones
Former Youth Teams 
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| SO/BB | MLB | 2025 | 2.97 |
| SO9 | MLB | 2025 | 9.0 |
| BB9 | MLB | 2025 | 3.0 |
| HR9 | MLB | 2025 | 0.5 |
| H9 | MLB | 2025 | 7.6 |
| WHIP | MLB | 2025 | 1.178 |
| Fielding Independent Pitching | MLB | 2025 | 2.90 |
| ERA+ | MLB | 2025 | 161 |
| Batters Faced | MLB | 2025 | 476 |
| Wild Pitches | MLB | 2025 | 1 |
| Balks | MLB | 2025 | 0 |
| Times Hit by a Pitch | MLB | 2025 | 3 |
| Strikeouts | MLB | 2025 | 116 |
| Intentional Bases on Balls | MLB | 2025 | 1 |
| Bases on Balls/Walks | MLB | 2025 | 39 |
| Home Runs Allowed | MLB | 2025 | 6 |
| Earned Runs Allowed | MLB | 2025 | 33 |
| Runs Allowed | MLB | 2025 | 38 |
| Hits Allowed | MLB | 2025 | 98 |
| Innings Pitched | MLB | 2025 | 116.1 |
| Saves | MLB | 2025 | 0 |
| Shutouts | MLB | 2025 | 0 |
| Complete Games | MLB | 2025 | 0 |
| Games Finished | MLB | 2025 | 0 |
| Games Started | MLB | 2025 | 20 |
| Games Pitched | MLB | 2025 | 20 |
| ERA | MLB | 2025 | 2.55 |
| Win-Loss Percentage | MLB | 2025 | .533 |
| Loss | MLB | 2025 | 7 |
| Wins | MLB | 2025 | 8 |
| Wins Above Replacement for Pitchers | MLB | 2025 | 3.1 |
|
|
| SO/BB | MLB | 2024 | 7.80 |
| SO9 | MLB | 2024 | 11.6 |
| BB9 | MLB | 2024 | 1.5 |
| HR9 | MLB | 2024 | 0.6 |
| H9 | MLB | 2024 | 7.7 |
| WHIP | MLB | 2024 | 1.022 |
| Fielding Independent Pitching | MLB | 2024 | 1.95 |
| ERA+ | MLB | 2024 | 155 |
| Batters Faced | MLB | 2024 | 121 |
| Wild Pitches | MLB | 2024 | 1 |
| Balks | MLB | 2024 | 0 |
| Home Runs Allowed | MLB | 2024 | 2 |
| Earned Runs Allowed | MLB | 2024 | 9 |
| Runs Allowed | MLB | 2024 | 12 |
| Hits Allowed | MLB | 2024 | 26 |
| Innings Pitched | MLB | 2024 | 30.1 |
| Saves | MLB | 2024 | 1 |
| Shutouts | MLB | 2024 | 0 |
| Complete Games | MLB | 2024 | 0 |
| Games Finished | MLB | 2024 | 7 |
| Games Started | MLB | 2024 | 0 |
| Games Pitched | MLB | 2024 | 27 |
| ERA | MLB | 2024 | 2.67 |
| Win-Loss Percentage | MLB | 2024 | .500 |
| Loss | MLB | 2024 | 1 |
| Wins | MLB | 2024 | 1 |
| Wins Above Replacement for Pitchers | MLB | 2024 | 0.8 |
| 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 | 8.00 |
| SO9 | MLB | 2023 | 9.0 |
| BB9 | MLB | 2023 | 1.1 |
| HR9 | MLB | 2023 | 0.6 |
| H9 | MLB | 2023 | 10.7 |
| WHIP | MLB | 2023 | 1.313 |
| Fielding Independent Pitching | MLB | 2023 | 2.63 |
| ERA+ | MLB | 2023 | 115 |
| Batters Faced | MLB | 2023 | 68 |
| Wild Pitches | MLB | 2023 | 1 |
| Balks | MLB | 2023 | 0 |
| Times Hit by a Pitch | MLB | 2023 | 1 |
| Strikeouts | MLB | 2023 | 16 |
| Intentional Bases on Balls | MLB | 2023 | 0 |
| Bases on Balls/Walks | MLB | 2023 | 2 |
| Home Runs Allowed | MLB | 2023 | 1 |
| Earned Runs Allowed | MLB | 2023 | 7 |
| Runs Allowed | MLB | 2023 | 7 |
| Hits Allowed | MLB | 2023 | 19 |
| Innings Pitched | MLB | 2023 | 16.0 |
| Saves | MLB | 2023 | 0 |
| Shutouts | MLB | 2023 | 0 |
| Complete Games | MLB | 2023 | 0 |
| Games Finished | MLB | 2023 | 0 |
| Games Started | MLB | 2023 | 3 |
| Games Pitched | MLB | 2023 | 3 |
| ERA | MLB | 2023 | 3.94 |
| Win-Loss Percentage | MLB | 2023 | .000 |
| Loss | MLB | 2023 | 2 |
| Wins | MLB | 2023 | 0 |
| Wins Above Replacement for Pitchers | MLB | 2023 | 0.5 |
|
|
| SO/BB | MLB | 2022 | 1.75 |
| SO9 | MLB | 2022 | 7.7 |
| BB9 | MLB | 2022 | 4.4 |
| HR9 | MLB | 2022 | 1.3 |
| H9 | MLB | 2022 | 10.9 |
| WHIP | MLB | 2022 | 1.698 |
| Fielding Independent Pitching | MLB | 2022 | 4.78 |
| ERA+ | MLB | 2022 | 73 |
| Batters Faced | MLB | 2022 | 587 |
| Wild Pitches | MLB | 2022 | 4 |
| Balks | MLB | 2022 | 1 |
| Times Hit by a Pitch | MLB | 2022 | 4 |
| Strikeouts | MLB | 2022 | 110 |
| Intentional Bases on Balls | MLB | 2022 | 0 |
| Bases on Balls/Walks | MLB | 2022 | 63 |
| Home Runs Allowed | MLB | 2022 | 18 |
| Earned Runs Allowed | MLB | 2022 | 80 |
| Runs Allowed | MLB | 2022 | 87 |
| Hits Allowed | MLB | 2022 | 156 |
| Innings Pitched | MLB | 2022 | 129.0 |
| Saves | MLB | 2022 | 0 |
| Shutouts | MLB | 2022 | 0 |
| Complete Games | MLB | 2022 | 0 |
| Games Finished | MLB | 2022 | 1 |
| Games Started | MLB | 2022 | 27 |
| Games Pitched | MLB | 2022 | 28 |
| ERA | MLB | 2022 | 5.58 |
| Win-Loss Percentage | MLB | 2022 | .188 |
| Loss | MLB | 2022 | 13 |
| Wins | MLB | 2022 | 3 |
| Wins Above Replacement for Pitchers | MLB | 2022 | -0.4 |
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|
| SO/BB | MLB | 2021 | 1.93 |
| SO9 | MLB | 2021 | 7.9 |
| BB9 | MLB | 2021 | 4.1 |
| HR9 | MLB | 2021 | 1.5 |
| H9 | MLB | 2021 | 8.4 |
| WHIP | MLB | 2021 | 1.385 |
| Fielding Independent Pitching | MLB | 2021 | 5.14 |
| ERA+ | MLB | 2021 | 103 |
| Batters Faced | MLB | 2021 | 556 |
| Wild Pitches | MLB | 2021 | 0 |
| Balks | MLB | 2021 | 1 |
| Home Runs Allowed | MLB | 2021 | 22 |
| Earned Runs Allowed | MLB | 2021 | 64 |
| Runs Allowed | MLB | 2021 | 67 |
| Hits Allowed | MLB | 2021 | 121 |
| Innings Pitched | MLB | 2021 | 130.0 |
| Saves | MLB | 2021 | 0 |
| Shutouts | MLB | 2021 | 0 |
| Complete Games | MLB | 2021 | 0 |
| Games Finished | MLB | 2021 | 3 |
| Games Started | MLB | 2021 | 20 |
| Games Pitched | MLB | 2021 | 29 |
| ERA | MLB | 2021 | 4.43 |
| Win-Loss Percentage | MLB | 2021 | .462 |
| Loss | MLB | 2021 | 7 |
| Wins | MLB | 2021 | 6 |
| Wins Above Replacement for Pitchers | MLB | 2021 | 1.3 |
| Positions Played | MLB | 2021 | 1 |
| Intentional Bases on Balls | MLB | 2021 | 0 |
| Sacrifice Flies | MLB | 2021 | 0 |
| Sacrifice Hits | MLB | 2021 | 0 |
| Times Hit by a Pitch | MLB | 2021 | 0 |
| GIDP | MLB | 2021 | 0 |
| Total Bases | MLB | 2021 | 0 |
| Rbat+ | MLB | 2021 | -128 |
| rOBA | MLB | 2021 | .000 |
| OPS+ | MLB | 2021 | -100 |
| OPS | MLB | 2021 | .000 |
| SLG | MLB | 2021 | .000 |
| OBP | MLB | 2021 | .000 |
| Hits/At Bats | MLB | 2021 | .000 |
| Strikeouts | MLB | 2021 | 1 |
| Bases on Balls/Walks | MLB | 2021 | 0 |
| Caught Stealing | MLB | 2021 | 0 |
| Stolen Bases | MLB | 2021 | 0 |
| Runs Batted In | MLB | 2021 | 0 |
| Home Runs | MLB | 2021 | 0 |
| Triples | MLB | 2021 | 0 |
| Doubles | MLB | 2021 | 0 |
| Hits | MLB | 2021 | 0 |
| Runs Scored | MLB | 2021 | 0 |
| At Bats | MLB | 2021 | 5 |
| Plate Appearances | MLB | 2021 | 5 |
| Games Played | MLB | 2021 | 2 |
| Wins Above Replacement for position players | MLB | 2021 | -0.1 |
|
|
| SO/BB | MLB | 2020 | 2.23 |
| SO9 | MLB | 2020 | 8.8 |
| BB9 | MLB | 2020 | 4.0 |
| HR9 | MLB | 2020 | 1.4 |
| H9 | MLB | 2020 | 9.4 |
| WHIP | MLB | 2020 | 1.480 |
| Fielding Independent Pitching | MLB | 2020 | 4.75 |
| ERA+ | MLB | 2020 | 108 |
| Batters Faced | MLB | 2020 | 222 |
| Wild Pitches | MLB | 2020 | 0 |
| Balks | MLB | 2020 | 0 |
| Times Hit by a Pitch | MLB | 2020 | 2 |
| Strikeouts | MLB | 2020 | 49 |
| Intentional Bases on Balls | MLB | 2020 | 1 |
| Bases on Balls/Walks | MLB | 2020 | 22 |
| Home Runs Allowed | MLB | 2020 | 8 |
| Earned Runs Allowed | MLB | 2020 | 24 |
| Runs Allowed | MLB | 2020 | 29 |
| Hits Allowed | MLB | 2020 | 52 |
| Innings Pitched | MLB | 2020 | 50.0 |
| Saves | MLB | 2020 | 0 |
| Shutouts | MLB | 2020 | 0 |
| Complete Games | MLB | 2020 | 0 |
| Games Finished | MLB | 2020 | 0 |
| Games Started | MLB | 2020 | 10 |
| Games Pitched | MLB | 2020 | 10 |
| ERA | MLB | 2020 | 4.32 |
| Win-Loss Percentage | MLB | 2020 | .143 |
| Loss | MLB | 2020 | 6 |
| Wins | MLB | 2020 | 1 |
| Wins Above Replacement for Pitchers | MLB | 2020 | 0.4 |
|