Justin Hagenman Bio
Justin Michael Hagenman (born October 7, 1996) is an American professional baseball pitcher for the New York Mets of Major League Baseball (MLB). The right-hander made his MLB debut in 2025 after progressing through multiple levels of the minor leagues, and he currently wears number 47 for the Mets. A graduate of Pennsylvania State University, Hagenman began his professional career in the Los Angeles Dodgers organization before trades and free agency brought him to the Boston Red Sox and eventually the Mets.
Standing out as a durable and versatile arm, Hagenman has spent time as both a starting pitcher and a reliever throughout his professional career. His path from a New Jersey high school program to a major league roster reflects steady development across several minor league affiliates.
Early Life and Background
Early Life and Background
Born and raised in Voorhees Township, New Jersey, Justin Michael Hagenman grew up in a region with a strong baseball tradition. He attended Bishop Eustace Preparatory School in Pennsauken Township, where he played prep baseball and developed into a promising pitching prospect. His time at Bishop Eustace helped him earn attention from college programs across the Northeast.
After high school, Hagenman enrolled at Pennsylvania State University, joining the Penn State Nittany Lions baseball team. In November 2015, he earned the win for Penn State in a friendly tournament game against Mayabeque in Cuba, providing an early taste of international competition. The following year, in 2016, he was one of three freshmen named to the Big Ten Conference’s All-Freshman Team, signaling his potential as a college pitcher.
During the summer of 2017, Hagenman played collegiate summer baseball with the Wareham Gatemen of the Cape Cod Baseball League, a respected developmental league for top college players. Across his three seasons at Penn State, he started 14 games in each year, establishing himself as a reliable presence in the Nittany Lions rotation before entering the 2018 MLB Draft.
Justin Hagenman Career
Path to Baseball
Justin Hagenman’s path to professional baseball began in New Jersey and ran through the Big Ten Conference. His high school career at Bishop Eustace Preparatory School laid the foundation, and his freshman All-Freshman Team selection in 2016 marked him as a pitcher to watch. Summer experience in the Cape Cod Baseball League further sharpened his skills against elite amateur competition.
By his junior year at Penn State, Hagenman had established himself as a consistent starter, logging 14 starts in each of his three collegiate seasons. That consistency, paired with his performance in high-profile summer leagues, positioned him as a draft-eligible pitcher following the 2018 college season. The Los Angeles Dodgers selected him in the 23rd round with the 704th overall pick, officially launching his professional career.
Early Career (2018-2019)
The Los Angeles Dodgers assigned Hagenman to their minor league system after selecting him in the 2018 MLB Draft. He split his first professional season between the rookie-level Ogden Raptors and the Single-A Great Lakes Loons, gaining his first exposure to professional hitters and routines.
In 2019, Hagenman returned to Great Lakes and produced his strongest minor league season to that point. Across 33 appearances, he posted a 6-2 win-loss record, a 2.24 earned run average (ERA), 64 strikeouts, and six saves. His performance highlighted an ability to handle high-leverage situations, even though he would not pitch in an official game in 2020 due to the cancellation of the minor league season caused by the COVID-19 pandemic.
Los Angeles Dodgers Organization (2021-2023)
Hagenman returned to action in 2021 with the Double-A Tulsa Drillers, where he took on a significant workload. In 38 appearances, he compiled a 7-4 record and a 3.45 ERA with 77 strikeouts and six saves across 62 and two-thirds innings pitched, reinforcing his value as a versatile relief option.
The 2022 campaign saw Hagenman split time between Tulsa and the Triple-A Oklahoma City Dodgers. In 46 appearances across both affiliates, he registered a 5-3 record and a 5.57 ERA with 65 strikeouts over 63 innings. He opened 2023 back at Oklahoma City, producing a 4-0 record and a 2.78 ERA with 60 strikeouts in 55 innings across 25 games, the kind of stretch that drew trade interest around midseason.
Boston Red Sox Era (2023-2024)
On July 25, 2023, the Los Angeles Dodgers traded Justin Hagenman and Nick Robertson to the Boston Red Sox in exchange for Enrique Hernández. The Red Sox assigned him to the Worcester Red Sox of the Triple-A International League, where he posted a 3.26 ERA with 28 strikeouts across 16 games in a relief role.
During the 2024 season, the Red Sox transitioned Hagenman from the bullpen into a starting pitcher role. In 28 appearances and 15 starts for Worcester, he compiled a 4-6 record and a 4.91 ERA with 98 strikeouts across 91 and two-thirds innings pitched. Following the season, Hagenman elected free agency on November 4, 2024, opening the door to a new opportunity.
New York Mets Era (2024-Present)
On November 18, 2024, Justin Hagenman signed a one-year, major league contract with the New York Mets. The Mets optioned him to the Triple-A Syracuse Mets to begin the 2025 season, allowing him to continue refining his craft before his call-up. On April 16, 2025, Hagenman was promoted to the major leagues for the first time.
He made his MLB debut that day against the Minnesota Twins, entering in the bottom of the second inning and pitching three and one-third innings in a 4-3 extra-inning loss. He allowed three hits, one run, and recorded four strikeouts, becoming the first Mets pitcher since Zack Wheeler in 2013 to strike out four batters in the first two innings of an MLB debut. On August 12, 2025, Hagenman earned his first MLB save, pitching the final four innings of a 13-5 win against the Atlanta Braves. In March 2026, he was placed on the 60-day injured list due to a rib fracture, interrupting his second major league season.
Driving Style and Strengths
Hagenman has demonstrated adaptability throughout his career, working effectively as both a reliever and a starter. His track record across multiple minor league affiliates points to strong strikeout ability, durability over long innings, and the composure needed for high-leverage moments. The transition from relief work to a starting role with the Red Sox organization in 2024 also showed a willingness to expand his craft.
Notable Events and Milestones
Among Justin Hagenman’s most memorable career moments is his MLB debut on April 16, 2025, when his four strikeouts in the first two innings tied a franchise benchmark last reached by Zack Wheeler in 2013. His first major league save on August 12, 2025, against the Atlanta Braves, marked another significant milestone in his young career.
Justin Hagenman Career Highlights
Across the Dodgers, Red Sox, and Mets organizations, Justin Hagenman has built a steady professional resume marked by consistent strikeout totals and growing responsibility. His MLB statistics through the 2025 season include a 0-1 win-loss record, a 4.56 earned run average, and 23 strikeouts in relief and spot-start appearances for the Mets.
Minor League Highlights
Hagenman’s strongest minor league season came in 2019 with the Single-A Great Lakes Loons, when he went 6-2 with a 2.24 ERA, 64 strikeouts, and six saves across 33 appearances. In 2021, he posted a 7-4 record and a 3.45 ERA with 77 strikeouts and six saves for the Double-A Tulsa Drillers, and he opened 2023 at Triple-A Oklahoma City with a 4-0 mark and a 2.78 ERA. His 2024 transition to a starting role with the Worcester Red Sox produced 98 strikeouts across 91 and two-thirds innings in 28 appearances.
Other Performances
In international amateur play, Hagenman earned a win for Penn State against Mayabeque during a 2015 friendly tournament in Cuba. He was also a Cape Cod Baseball League participant with the Wareham Gatemen in 2017, a respected proving ground for top college players.
Justin Hagenman Family
Family Background and Racing Lineage
Publicly available information about Justin Hagenman’s family background remains limited. He was born and raised in Voorhees Township, New Jersey, and developed his baseball skills in the local youth and high school circuits before moving on to Penn State.
Personal Life
Details about Justin Hagenman’s personal life, including his marital status, are not publicly confirmed in available sources. He continues to focus on his pitching career with the New York Mets organization.
2025 Season Performance
Justin Hagenman’s 2025 season represented his first extended look at the major league level with the New York Mets. After signing a one-year major league contract in November 2024, he opened the year at Triple-A Syracuse before earning a promotion on April 16, 2025. His debut against the Minnesota Twins produced four strikeouts in just over three innings of work, providing an early highlight.
Through the 2025 campaign, Hagenman finished with a 0-1 record, a 4.56 earned run average, and 23 strikeouts in his major league appearances, contributing out of the bullpen and in spot starts. His first MLB save on August 12, 2025, against the Atlanta Braves underlined his growing role in late-inning situations. The momentum of his rookie year carried into the early portion of 2026, though a rib fracture in March of that year placed him on the 60-day injured list and interrupted his continued development with the Mets.
