John Schreiber Bio
John Robert Schreiber is an American professional baseball pitcher for the Kansas City Royals of Major League Baseball (MLB). A right-handed thrower and batter, he has previously 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 since debuting in 2019.
Born and raised in Michigan, Schreiber developed his game through high school and college baseball before being drafted by the Detroit Tigers in 2016. After several seasons working through the minor leagues, he reached the majors and has continued to develop into a dependable late-inning option.
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 attended Carlson High School in Gibraltar, Michigan, where he began his organized baseball career.
After high school, Schreiber played college baseball for Henry Ford Community College in Dearborn for two seasons. He later transferred to the University of Northwestern Ohio, where he spent two more seasons continuing to develop his pitching skills.
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 play in Major League Baseball, marking an early milestone in his progression toward the professional ranks.
Path to Baseball
Following his time at the University of Northwestern Ohio, Schreiber entered the 2016 MLB draft and was selected by the Detroit Tigers in the 15th round. He signed with the organization for a $6,000 bonus and was assigned to the Connecticut Tigers to begin his professional career.
In his first professional season with the Connecticut Tigers, Schreiber went 2–3 in 18 games, posting a 2.76 ERA and a 1.09 WHIP. The following year, he moved up to the West Michigan Whitecaps, where he improved to a 5–1 record with a 0.54 ERA across 27 relief appearances, holding opposing batters to a .147 average. His strong performance earned him a promotion to the Double-A Erie SeaWolves in 2018.
With Erie, Schreiber posted a 2.48 ERA and converted 18 of 23 save opportunities across 49 total appearances, establishing himself as a reliable relief arm. He began the 2019 season in Erie before a strong start led to a promotion to the Triple-A Toledo Mud Hens, where he continued to dominate opposing hitters.
John Schreiber Career
Early Career (2016–2018)
After signing with Detroit in 2016, Schreiber spent time with the Connecticut Tigers, West Michigan Whitecaps, and Erie SeaWolves. Each step of the minor-league ladder brought improvement, with his ERA dropping and his role as a late-inning reliever becoming more defined.
His time in Erie during 2018 was particularly important, as he recorded 18 saves and demonstrated the composure and strike-throwing ability that would later serve him in the major leagues. By the end of that season, he had positioned himself for a chance at the highest level.
Detroit Tigers (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 the following day, August 9, allowing one run in 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 the Tigers’ 5–4 extra-innings victory over the Oakland Athletics.
Across his first MLB season, Schreiber pitched 13 innings for the 2019 Tigers, compiling a 6.23 ERA with 19 strikeouts. In 2020, he appeared in 15 games for Detroit, finishing with a 0–1 record, a 6.32 ERA, and 14 strikeouts in 15⅔ innings. On February 12, 2021, Schreiber was designated for assignment following the signing of Nomar Mazara.
Boston Red Sox (2021–2023)
On February 18, 2021, Schreiber was claimed off waivers by the Boston Red Sox. After a brief stay on the roster and a stint in Triple-A with the Worcester Red Sox, he was added to Boston’s active roster on September 1 and appeared in one game before being returned to Worcester. He pitched in 33 appearances for Worcester in 2021, recording a 2.71 ERA and a 3–3 record with 65 strikeouts in 66⅓ innings.
Schreiber opened the 2022 season with Worcester before being added to Boston’s active roster on April 25. On May 10, 2022, he earned his first major-league save, throwing two shutout innings against the Atlanta Braves. In 64 relief appearances that year, Schreiber posted a 4–4 record with eight saves and a 2.22 ERA while striking out 74 batters in 65 innings, breaking out as an important member of the Red Sox bullpen.
In 2023, Schreiber began the season in Boston’s bullpen before a right teres major strain landed him on the injured list on May 16. He was transferred to the 60-day injured list on June 22 and later activated on July 25, when he served as the opener against the Atlanta Braves. In 46 outings for Boston, he recorded a 3.86 ERA with 53 strikeouts across 46⅔ 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 to contribute in a new bullpen environment.
With Kansas City, Schreiber continued his role as a right-handed reliever, providing the Royals with a veteran arm capable of handling multiple innings out of the bullpen. His track record of strike-throwing and late-inning composure made him a valuable addition to the Royals’ relief corps.
Driving Style and Strengths
Schreiber’s game is built around command, durability, and the ability to handle multiple-inning assignments. He has shown particular effectiveness against right-handed hitters throughout his professional career, and his experience as both a starter and reliever has made him a flexible option for his managers.
Notable Events and Milestones
Among Schreiber’s most notable moments are his first MLB debut with the Tigers in August 2019, his first major-league win later that September, and his first MLB save with Boston in May 2022. His standing as the first Kalamazoo Growlers alumnus to reach the major leagues remains a unique point of pride in his professional journey.
John Schreiber Career Wins
Across his major-league career, Schreiber has compiled wins with both the Detroit Tigers and the Boston Red Sox, while also contributing saves and long relief outings. His consistent presence in the bullpen has made him a trusted arm for multiple organizations.
Detroit Tigers Highlights
Schreiber earned his first major-league win with Detroit on September 7, 2019, closing out a 5–4 extra-innings victory over the Oakland Athletics. During his Tigers tenure, he appeared in 28 total MLB games across the 2019 and 2020 seasons.
Boston Red Sox Highlights
In 2022, Schreiber recorded his first major-league save against the Atlanta Braves on May 10, finishing the game with two shutout innings. That season, he went on to compile eight saves while anchoring a stretch of the Red Sox bullpen.
John Schreiber Family
Family Background and Racing Lineage
Public information about Schreiber’s immediate family is limited. He was born and raised in the Downriver area of Michigan, where his early connection to baseball was formed.
Personal Life
Schreiber has kept much of his personal life private, and few details about his relationships or home life have been publicly confirmed.
2025 Season Performance
Entering 2025, Schreiber continues his role as a right-handed reliever for the Kansas City Royals. His veteran presence and bullpen versatility position him as a reliable option for Kansas City’s pitching staff throughout the season.
After a full campaign with the Royals in 2024, Schreiber is expected to compete for high-leverage relief opportunities in 2025. His track record of strike-throwing and multi-inning capability should keep him in the mix for late-inning work as the season unfolds.
With Kansas City continuing to build around a young core, Schreiber’s experience in both starting and relief roles offers the Royals a dependable arm. His ability to adapt and deliver consistent outings remains his greatest asset as the 2025 season progresses.