John Schreiber Bio
John Robert Schreiber is an American professional baseball pitcher for the Kansas City Royals of Major League Baseball. He has previously played in MLB for the Detroit Tigers and Boston Red Sox. Listed at 6 feet 2 inches and 210 pounds, Schreiber throws and bats right-handed and has worked primarily as a relief pitcher since his major league debut in 2019.
Early Life and Background
John Robert Schreiber was born on March 5, 1994, in Wyandotte, Michigan, and was raised in nearby Rockwood. He attended Carlson High School in Gibraltar, where he developed as a right-handed pitcher before advancing to collegiate baseball.
After high school Schreiber played two seasons at Henry Ford Community College in Dearborn and then transferred to the University of Northwestern Ohio for two more seasons. He also spent a summer playing collegiate baseball for the Kalamazoo Growlers of the Northwoods League, becoming the first Growlers alumnus to reach the major leagues.
Path to Baseball
Schreiber entered professional baseball when the Detroit Tigers selected him in the 15th round of the 2016 MLB draft; he signed for a reported $6,000 bonus. He began his pro career in Detroit’s low minors and progressed through the organization’s system over the next several seasons.
In the Tigers’ farm system Schreiber moved through Connecticut and West Michigan, then reached Double-A Erie, where he developed a role as a late-inning reliever and amassed significant save totals at the minor-league level. Strong control and strikeout ability in the minors earned him a promotion to Triple-A Toledo before his major league debut.
John Schreiber Career
Early Career (2016–2019)
After signing with the Detroit Tigers following the 2016 draft, Schreiber was assigned to the Connecticut Tigers and posted solid early numbers as a relief pitcher. In 2017 with the West Michigan Whitecaps he produced an especially strong season, improving his role and limiting opponents’ hitting through 27 relief appearances.
Schreiber advanced to the Double-A Erie SeaWolves in 2018 where he converted opportunities into saves, recording 18 saves in 23 chances while appearing in 49 games. He began 2019 with Erie and earned a promotion to Triple-A Toledo after continuing to limit opponents and show strikeout upside.
Detroit Tigers Breakthrough (2019–2020)
The Detroit Tigers selected Schreiber’s contract and promoted him to the major leagues on August 8, 2019. He made his major league debut on August 9, 2019, allowing one run over two-thirds of an inning. Schreiber earned his first major league win on September 7, 2019, pitching the final two-thirds of an extra-innings victory over the Oakland Athletics.
Schreiber finished the 2019 season with the Tigers after appearing in relief across several games. He returned to the big-league staff for the 2020 season and appeared in 15 games that year, recording strikeouts while working out of the Detroit bullpen before being designated for assignment in February 2021.
Boston Red Sox Breakthrough (2021–2023)
On February 18, 2021, Schreiber was claimed off waivers by the Boston Red Sox. After brief roster moves and a period at Boston’s alternate training site and in Triple-A Worcester, he was added to Boston’s active roster in September 2021 and made a major-league appearance that month.
Schreiber established himself in the Red Sox bullpen in 2022. He opened the year with Worcester but was recalled during the season and on May 10, 2022, earned his first major-league save with a two-inning, shutout performance against the Atlanta Braves. In 2022 he appeared in 64 relief outings, posting a 4–4 record with eight saves, a 2.22 earned run average, and 74 strikeouts in 65 innings.
The 2023 season began with Schreiber in Boston’s bullpen. He was placed on the injured list on May 16, 2023, with a right teres major strain and later transferred to the 60-day injured list. Schreiber was activated on July 25, 2023, and served as the opener that day; he finished the season with 46 outings, a 3.86 ERA and 53 strikeouts in 46 2/3 innings for Boston.
Kansas City Royals Era (2024–Present)
On February 17, 2024, the Boston Red Sox traded John Schreiber to the Kansas City Royals in exchange for minor-league pitcher David Sandlin. He joined the Royals organization following that trade and is listed with the team beginning in 2024.
Schreiber’s role with the Kansas City Royals is as a member of the club’s pitching staff; his prior usage with Detroit and Boston established him as a right-handed bullpen option capable of multi-inning appearances and late-inning holds.
Driving Style and Strengths
Schreiber is a right-handed reliever whose professional track record shows success in high-leverage relief roles. Across his ascent from Double-A to the major leagues he demonstrated an ability to record strikeouts and convert save opportunities in the minors and later to handle multiple-inning relief stints in the majors, exemplified by his two-inning save in May 2022.
Notable Events and Milestones
Key milestones in Schreiber’s career include his MLB debut on August 9, 2019, his first major league win on September 7, 2019, converting 18 saves at Double-A Erie in 2018, his first big-league save on May 10, 2022, and his trade to the Kansas City Royals on February 17, 2024.
John Schreiber Career Wins
John Schreiber’s major-league win–loss record and statistical totals reflect his work as a relief pitcher across multiple seasons and teams. He recorded his first major-league win in 2019 and has accumulated both wins and saves while contributing strikeouts and innings across relief appearances in Detroit and Boston before joining Kansas City in 2024.
MLB Highlights
Schreiber’s notable major-league highlights include earning his first MLB win in 2019, recording a two-inning save for Boston in 2022, and posting 74 strikeouts in 65 innings during the 2022 season while compiling eight saves and a 2.22 ERA. Those performances marked his emergence as a reliable bullpen option at the big-league level.
Other Wins & Perfromances
In the minor leagues Schreiber posted standout seasons, including a 2018 campaign at Double-A Erie with 18 saves and a sub-2.50 ERA across a significant number of relief appearances. His minor-league success provided the foundation for his major-league promotions.
John Schreiber Family
Family Background and Baseball Roots
Schreiber grew up in the Rockwood area after being born in Wyandotte, Michigan. Public records and team biographies note his Michigan upbringing and progression through local high school and college baseball programs before entering the professional ranks.
Personal Life
Public personal details for Schreiber are limited in official sources. He maintains a public presence on social media and is identified in team and professional biographies primarily by his playing career and baseball background rather than private family details.
2025 Season Performance
Entering 2025 John Schreiber is a member of the Kansas City Royals following his trade from the Boston Red Sox in February 2024. His track record as a right-handed relief pitcher with experience in multi-inning outings positions him as a bullpen option for the Royals as the club manages its relief corps.
Schreiber’s recent major-league seasons, including a 2022 campaign that produced a 2.22 ERA and eight saves with strong strikeout totals, are the most readily cited indicators of his capability to contribute in middle- and late-inning relief roles for Kansas City in 2025.