Justin James Sterner Bio
Justin James Sterner is an American professional baseball pitcher who currently plays for the Athletics of Major League Baseball (MLB). Born on August 29, 1996, Sterner began his professional career in 2021 after signing with the Miami Marlins as an undrafted free agent. He made his MLB debut in 2024 with the Tampa Bay Rays before joining the Athletics organization later that same year. Sterner has established himself as a reliable reliever, compiling a career win-loss record of 6-6 with a 3.49 earned run average and 110 strikeouts through June 25, 2026.
Early Life and Background
Justin James Sterner grew up in Dana Point, California, where he attended Dana Hills High School. During his formative years, Sterner developed his skills as a baseball pitcher while balancing his academic responsibilities and other interests. His high school career laid the foundation for his future pursuit of professional baseball.
After graduating from Dana Hills High School, Sterner took an unconventional path that demonstrated his commitment to both faith and athletics. He completed a two-year mission for the Church of Jesus Christ of Latter-day Saints in Apia, Samoa, which is a common practice among members of the LDS faith. This experience shaped his character and provided him with valuable life lessons before he continued his athletic and academic career.
Path to Professional Baseball
Following his mission work, Sterner enrolled at Brigham Young University, where he played college baseball for the BYU Cougars. His performance at the collegiate level showcased his talent as a pitcher and positioned him for professional opportunities. The competitive environment at BYU helped Sterner refine his pitching mechanics and develop the skills necessary for the next stage of his baseball journey.
Despite not being selected in the 2020 MLB draft, Sterner’s perseverance paid off. On August 3, 2020, he signed with the Miami Marlins as an undrafted free agent, officially beginning his professional baseball career. This signing represented a critical opportunity for Sterner to prove himself within the professional ranks.
Justin James Sterner Career
Minor League Development (2020–2024)
Sterner did not play in any games during 2020 due to the cancellation of the minor league season caused by the COVID-19 pandemic. However, he remained committed to his development and was ready when competition resumed in 2021. He made his professional debut that year with the Single-A Jupiter Hammerheads, where he posted an impressive 1.38 earned run average across seven appearances. His strong performance earned him a promotion to the High-A Beloit Snappers, though he struggled somewhat in that adjustment, compiling a 7.36 ERA with 10 strikeouts in five games.
On July 3, 2021, the Marlins traded Sterner and cash considerations to the Tampa Bay Rays in exchange for David Hess. This trade marked a significant turning point in his career, as he joined an organization known for developing talented pitchers. He finished the 2021 season playing with the High-A Bowling Green Hot Rods and Double-A Montgomery Biscuits, gaining valuable experience at higher levels of the minor leagues.
Breakthrough with Triple-A Durham Bulls (2022–2023)
The 2022 season represented a breakthrough for Sterner as he split time between the Double-A Montgomery Biscuits and the Triple-A Durham Bulls. In 38 total appearances across both affiliates, he accumulated a 6-2 record with a 3.94 earned run average and 65 strikeouts across 48 innings of work. This consistent performance demonstrated his ability to compete at the Triple-A level and positioned him for a potential MLB call-up.
Sterner returned to Montgomery and Durham for the 2023 campaign, where he continued to hone his craft. He combined for a 5.27 ERA with 71 strikeouts and three saves in 34 total appearances. The three saves represented an expansion of his repertoire, showing his capability to pitch in high-leverage situations late in games.
MLB Debut and Tampa Bay Rays (2024)
Sterner began the 2024 season with the Triple-A Durham Bulls, where he continued his strong performance by compiling a 3.60 ERA with 33 strikeouts across 25 innings pitched. On May 31, 2024, his efforts paid off when the Rays selected him to the 40-man roster and promoted him to the major leagues for the first time. He made two appearances during his rookie campaign, allowing two runs (one earned) on five hits with four strikeouts over four innings pitched. While his sample size was small, the experience of pitching in the majors provided invaluable exposure to elite-level competition.
Athletics Era (2025–Present)
Following the 2024 season, Sterner joined a new organization. On November 4, 2024, the Athletics claimed him off waivers, providing him with an opportunity to continue his MLB career with a different club. This move represented a fresh start and a chance to establish himself as a permanent member of a major league pitching staff.
The 2025 season proved to be a breakthrough for Sterner at the major league level. On April 25, 2025, he recorded his first career win after tossing 1 and one-third scoreless innings against the Chicago White Sox. Perhaps most impressively, Sterner did not give up a run in his first 18 and two-thirds innings pitched for the Athletics, showcasing exceptional consistency and effectiveness from the bullpen. This stretch of scoreless innings demonstrated his ability to handle high-pressure situations and become a reliable option in the Athletics’ relief corps.
Pitching Style and Strengths
Sterner has developed a reputation as a dependable reliever capable of delivering crucial outs in various situations. His ability to induce weak contact and limit base runners has made him an asset in late-inning scenarios. His experience spanning multiple minor league levels and two major league organizations has provided him with a diverse toolkit for different game situations. The rapport he has built with catchers and coaching staff has contributed to his success in executing game plans effectively.
Notable Events and Milestones
Several significant moments have defined Sterner’s young career. His first career MLB win against the Chicago White Sox on April 25, 2025, represented the culmination of years of hard work and dedication to reaching the sport’s highest level. Additionally, his remarkable streak of scoreless innings to begin his Athletics tenure established him as a pitcher capable of shutting down opposing lineups. His journey from undrafted free agent to MLB contributor exemplifies the perseverance required to succeed in professional baseball.
Justin James Sterner Career Wins
Through June 25, 2026, Sterner has established himself as a solid major league pitcher with a career win-loss record of 6-6 and a 3.49 earned run average. His 110 career strikeouts reflect his ability to miss bats and get hitters out at the highest level of competition.
Major League Baseball Highlights
Sterner’s MLB career began with limited appearances for the Tampa Bay Rays in 2024, but he quickly found his footing after joining the Athletics. His first career win in April 2025 marked a significant personal milestone. Throughout the 2025 season and into 2026, he has continued to build upon his early success, demonstrating consistency and reliability from the bullpen. His ability to work multiple innings and keep runs off the scoreboard has made him an important piece of the Athletics’ pitching staff.
Minor League Achievements
Before reaching the majors, Sterner accumulated impressive numbers throughout the minor leagues. His standout performance with the Jupiter Hammerheads in 2021, where he posted a 1.38 ERA, demonstrated his potential as a future big league contributor. His combined efforts across multiple minor league seasons, including his time with the Durham Bulls at the Triple-A level, prepared him for the challenges of major league hitters.
| Competition Level | Wins | Losses | ERA | Strikeouts |
|---|---|---|---|---|
| MLB (2024–2026) | 6 | 6 | 3.49 | 110 |
Justin James Sterner Family
Family Background and Racing Lineage
Specific details about Sterner’s family background, including his parents, siblings, or any family connections to professional athletics, are not widely available in public sources. He has maintained a private approach to his family life while sharing his professional journey with fans and media.
Personal Life
Sterner is a member of the Church of Jesus Christ of Latter-day Saints, which has played a significant role in shaping his values and life decisions. His commitment to his faith was demonstrated through his two-year mission service in Apia, Samoa, which he completed before attending Brigham Young University. This experience reflects the importance of his religious beliefs in his daily life and career approach. Sterner continues to maintain an active presence on social media, where he shares glimpses of his baseball career with his followers.
2025 Season Performance
The 2025 season marked a turning point in Justin James Sterner’s professional career as he transitioned from a minor league prospect to a meaningful MLB contributor. After joining the Athletics organization via waiver claim in late 2024, Sterner reported to spring training determined to earn a permanent role in the major league bullpen. His performance during spring training and the early weeks of the regular season caught the attention of the coaching staff, ultimately earning him a spot on the Opening Day roster.
Throughout the first half of the 2025 season, Sterner emerged as one of the Athletics’ most reliable relief options. His first career win against the Chicago White Sox on April 25 served as a confidence boost and validated his ability to perform in high-pressure situations. The standout statistic of his early 2025 campaign was his remarkable scoreless innings streak, which extended beyond 18 and two-thirds innings without allowing a run. This stretch of dominance showcased his ability to locate his pitches effectively and keep opposing hitters off balance.
The relationship between Sterner and the Athletics’ coaching staff played a significant role in his success throughout the 2025 campaign. Working closely with the bullpen coordinator and catching staff, he refined his approach to different hitters and game situations. As the season progressed, Sterner continued to log important innings out of the bullpen, providing the Athletics with a dependable arm in various roles. His trajectory from undrafted free agent to established MLB reliever exemplified the value of persistence and continuous development in professional baseball.