John Schreiber Bio
John Robert Schreiber, born on March 5, 1994, is an American professional baseball pitcher for the Kansas City Royals of Major League Baseball (MLB). A right-handed thrower and batter, he has also played in MLB for the Detroit Tigers and Boston Red Sox. Listed at 6 feet 2 inches and 210 pounds, Schreiber has built his career as a reliable relief pitcher across multiple organizations.
Schreiber’s journey from a small-town upbringing in southeastern Michigan to the major leagues reflects steady progression through amateur, collegiate, and minor-league baseball. He has developed into a dependable bullpen arm whose career continues to evolve with the Kansas City Royals.
Early Life and Background
John Robert Schreiber was born on March 5, 1994, in Wyandotte, Michigan, and raised in the nearby community of Rockwood. He grew up in the Downriver region of southeastern Michigan, an area with a strong baseball tradition. His early years in this working-class community helped shape his approach to the game.
Schreiber attended Carlson High School in Gibraltar, Michigan, where he began to develop as a pitcher. Following high school, he played college baseball for two seasons at Henry Ford Community College in Dearborn. He then transferred to the University of Northwestern Ohio, where he completed two additional seasons of collegiate competition and refined his skills on the mound.
During the summer of 2014, Schreiber played collegiate summer baseball for the Kalamazoo Growlers of the Northwoods League. He later became the first Growlers alumnus to reach Major League Baseball, marking a notable connection between his developmental years and his professional career.
Path to Baseball
Schreiber’s path to professional baseball moved through the standard amateur pipeline. After completing his college career, he entered the 2016 MLB Draft, where the Detroit Tigers selected him in the 15th round. He signed with Detroit for a $6,000 bonus and began his professional career in the Tigers’ minor-league system.
His assignment to the Connecticut Tigers in 2016 produced a 2-3 record in 18 games with a 2.76 ERA and 1.09 WHIP. In 2017, while pitching for the West Michigan Whitecaps, he improved significantly, going 5-1 with a 0.54 ERA across 27 relief appearances. Opponents batted just .147 against him that season, signaling his potential as a late-inning option.
Schreiber advanced to Double-A Erie SeaWolves in 2018, where he posted a 2.48 ERA and recorded 18 saves in 23 opportunities over 49 games. He began 2019 in Erie before being promoted to the Triple-A Toledo Mud Hens after allowing only two runs in seven innings.
John Schreiber Career
Detroit Tigers Era (2019-2020)
On August 8, 2019, the Detroit Tigers selected Schreiber’s contract and promoted him to the major leagues. He made his MLB debut on August 9, allowing one run over two-thirds of an inning. On September 7, 2019, he earned his first major-league win, pitching the final two-thirds of an inning in a 5-4 extra-innings victory over the Oakland Athletics.
During the 2019 season, Schreiber pitched 13 innings for the Tigers, compiling a 6.23 ERA with 19 strikeouts. In the shortened 2020 campaign, he appeared in 15 games, recording a 0-1 mark with a 6.32 ERA and 14 strikeouts across 15 and two-thirds innings. On February 12, 2021, the Tigers designated him for assignment following the signing of outfielder Nomar Mazara, ending his time in the Detroit organization.
Boston Red Sox Era (2021-2023)
On February 18, 2021, the Boston Red Sox claimed Schreiber off waivers. After being designated for assignment on March 30, he was sent outright to the team’s alternate training site on April 2. Following stints in Triple-A with the Worcester Red Sox, Boston added him to the active roster on September 1, 2021, and he appeared in one game before being returned to Worcester on September 6.
Schreiber opened the 2022 season with Worcester before being added to Boston’s active roster on April 25. After a brief demotion, he was recalled on May 6 when Rich Hill was placed on the COVID-19 injured list. On May 10, 2022, Schreiber earned his first major-league save, throwing two shutout innings against the Atlanta Braves. He appeared in 64 relief appearances for Boston that year, posting a 4-4 record with eight saves, a 2.22 ERA, and 74 strikeouts in 65 innings, establishing himself as an important member of the Red Sox bullpen.
Schreiber began the 2023 season in Boston’s bullpen, but on May 16 he was placed on the injured list with a right teres major strain. He was transferred to the 60-day injured list on June 22 before being activated on July 25. He served as the opener in a game against the Atlanta Braves that day, pitching one inning. In 46 outings for Boston in 2023, Schreiber recorded a 3.86 ERA with 53 strikeouts across 46 and two-thirds innings.
Kansas City Royals Era (2024-Present)
On February 17, 2024, the Boston Red Sox traded Schreiber to the Kansas City Royals in exchange for minor-league pitcher David Sandlin. The move gave Schreiber a fresh opportunity in a new organization and positioned him within the Royals’ bullpen plans.
Through his time in Kansas City, Schreiber has continued to serve as a relief option for the Royals, contributing to a bullpen that has sought stability in recent seasons. His veteran presence and experience across multiple organizations have added depth to the Kansas City pitching staff.
Notable Events and Milestones
Schreiber’s first major-league win on September 7, 2019, against the Oakland Athletics marked a defining early moment in his career. His first major-league save on May 10, 2022, against the Atlanta Braves represented another significant milestone, confirming his late-inning capabilities. Becoming the first Kalamazoo Growlers alumnus to reach the majors further highlights his connection to the developmental side of the sport.
John Schreiber Career Wins
Across his major-league career, John Robert Schreiber has compiled a win-loss record reflecting his role as a relief pitcher. His professional journey includes time with the Connecticut Tigers, West Michigan Whitecaps, Erie SeaWolves, Toledo Mud Hens, Worcester Red Sox, Detroit Tigers, Boston Red Sox, and Kansas City Royals.
Detroit Tigers Highlights
Schreiber earned his first major-league win with the Detroit Tigers on September 7, 2019, closing out a 5-4 extra-innings victory over the Oakland Athletics. His minor-league success with Detroit affiliates, including a 5-1 record at West Michigan in 2017 and 18 saves at Erie in 2018, demonstrated his readiness for higher competition.
Boston Red Sox Highlights
With the Boston Red Sox, Schreiber recorded a 4-4 record in 2022 while earning eight saves and posting a 2.22 ERA across 64 relief appearances. His work that season established him as a reliable late-inning option for the Red Sox bullpen.
John Schreiber Family
Family Background and Personal Life
John Robert Schreiber grew up in Wyandotte and Rockwood, Michigan, communities in the Downriver region near Detroit. Details about his family and personal life outside of baseball remain private, and publicly verified information about his parents, spouse, or children is limited.
2025 Season Performance
Entering the 2025 season, John Robert Schreiber continued his role with the Kansas City Royals following his acquisition from the Boston Red Sox in February 2024. His experience as a right-handed reliever positions him within a Royals bullpen seeking consistency throughout the campaign.
Schreiber’s track record of multi-inning relief appearances and his demonstrated ability to record saves in high-leverage situations provide Kansas City with a dependable option out of the bullpen. His career statistics through recent seasons reflect a pitcher who has settled into a defined role at the major-league level.
As the 2025 season progresses, Schreiber’s continued development and consistency will remain a focus for the Royals. His journey from a 15th-round draft pick to an established MLB reliever underscores the value of perseverance through the minor leagues.