Jesse Hahn Bio
Jesse Allen Hahn, born on July 30, 1989, is an American professional baseball pitcher who is currently a free agent. A right-handed starter and reliever, Hahn has spent parts of his career in Major League Baseball (MLB) with the San Diego Padres, Oakland Athletics, Kansas City Royals, and Seattle Mariners, and has also pitched in the minor leagues for several other organizations. He first entered professional baseball when the Tampa Bay Rays selected him in the sixth round of the 2010 MLB draft.
Over the years, Hahn has built a reputation as a determined pitcher who has battled back from significant injuries, most notably Tommy John surgery early in his career. He has experienced both promising stretches on major league mounds and long stretches of rehabilitation, shaping a career defined by resilience and persistence.
Early Life and Background
Jesse Allen Hahn grew up in Connecticut, where he attended Fitch Senior High School in Groton. While at Fitch, he pitched for the school’s baseball team, developing the skills that would eventually draw professional scouts. It was during these high school years that Hahn shared a clubhouse with fellow pitcher Matt Harvey, who would later become a well-known major league starter.
After graduating, Hahn enrolled at Virginia Tech, where he played college baseball for the Virginia Tech Hokies. In the summer of 2009, he showcased his talents in one of the most competitive amateur leagues in the country, joining the Chatham Anglers of the Cape Cod Baseball League. His college career, however, was interrupted in 2010 when he injured the elbow of his throwing arm and required Tommy John surgery, a procedure that would delay his professional debut but not derail his long-term plans.
Path to Major League Baseball
Even before pitching in the minor leagues, Hahn was on the radar of major league organizations thanks to his strong high school and college resume. The Tampa Bay Rays selected him in the sixth round of the 2010 MLB draft, and he signed with the club for a $525,000 signing bonus, a sign of the team’s confidence in his future. Because he was still recovering from Tommy John surgery, Hahn did not make his professional debut until 2012.
As he moved through the Rays’ minor league system, Hahn demonstrated enough potential to be added to the team’s 40-man roster on November 20, 2013. His development during this period positioned him as a prospect to watch, and it did not take long for another organization to come calling, setting the stage for his major league arrival.
Jesse Hahn Career
Tampa Bay Rays Organization (2010–2013)
Although the Tampa Bay Rays drafted Jesse Allen Hahn in 2010, his time in the organization was largely about development and recovery. He spent his first two years in professional baseball working his way back from Tommy John surgery before finally debuting in 2012. The Rays were patient with his progression, and by the end of 2013, they had protected him on their 40-man roster, signaling that his major league debut was approaching.
San Diego Padres (2014)
On January 22, 2014, the Rays traded Jesse Hahn and Alex Torres to the San Diego Padres in exchange for Logan Forsythe, Brad Boxberger, Matt Lollis, Matt Andriese, and Maxx Tissenbaum. The Padres brought him up from the Double-A San Antonio Missions, and Hahn made his major league debut on June 3, 2014. After being optioned back to San Antonio the next day, he returned to the majors later in the season and finished his first year with a 7-4 record and a 3.07 ERA in 12 starts, a strong introduction to big league baseball.
Oakland Athletics (2015–2017)
On December 18, 2014, the Padres traded Hahn and R. J. Alvarez to the Oakland Athletics for Derek Norris and Seth Streich. In his first season with Oakland, Hahn went 6-6 with a 3.35 ERA in 2015 and led the major leagues in runners reaching base due to errors, with 14. Across his three seasons with the A’s, however, he battled numerous injuries and inconsistency, appearing in only 38 starts, a stretch that limited his ability to establish himself as a fixture in the rotation.
Kansas City Royals (2018–2021)
On January 29, 2018, the Athletics traded Hahn and Heath Fillmyer to the Kansas City Royals for Brandon Moss and Ryan Buchter. He began spring training with the Royals but experienced discomfort in his ulnar collateral ligament and was placed on the 60-day disabled list, causing him to miss the entire 2018 season. In 2019, he spent most of the year rehabbing and in the minors, appearing in only six games for Kansas City before being non-tendered and becoming a free agent. He re-signed with the Royals on a one-year contract in December 2019, and during the shortened 2020 season, he appeared in 18 games, going 1-0 with a 0.52 ERA and 19 strikeouts in 17.1 innings. In 2021, he was placed on the 60-day injured list in May with a right shoulder impingement and became a free agent after the season.
Los Angeles Dodgers Organization (2024)
After not pitching at any level since 2021 due to injury, Hahn signed a minor league contract with the Los Angeles Dodgers on January 17, 2024. He was assigned to the Triple-A Oklahoma City Baseball Club, where he pitched 41.2 innings over 35 games, compiling a 4-1 record and a 4.75 ERA with 45 strikeouts. The Dodgers released him on August 29, 2024.
Seattle Mariners (2024–2025)
On September 4, 2024, Jesse Hahn signed a minor league contract with the Seattle Mariners. In eight games for the Triple-A Tacoma Rainiers, he posted a 3.12 ERA with 10 strikeouts across 8.2 innings pitched before electing free agency on November 4. He re-signed with the Mariners on a new minor league contract on November 18, 2024, but was released prior to the start of the 2025 season on March 23. He re-signed with the Mariners organization on March 27, and on April 5, the Mariners called him up to their active roster. After two scoreless appearances, he was designated for assignment on April 9, cleared waivers, rejected an outright assignment, and became a free agent on April 13. He re-signed with Seattle on April 15, was selected to the active roster on May 21, and was designated for assignment again on May 23 after allowing three runs in one inning against the Houston Astros. He cleared waivers and elected free agency on May 26 before re-signing with the Mariners on a minor league contract on June 3. He elected free agency following the season on November 6.
Notable Events and Milestones
Jesse Allen Hahn’s career has been marked by a series of comebacks. His major league debut with the San Diego Padres on June 3, 2014, ended with a strong 7-4 record and a 3.07 ERA in his rookie season. His standout 2020 campaign with the Kansas City Royals, in which he posted a 0.52 ERA, stood out as one of the most efficient stretches of his career, while his repeated free agent and minor league stints with the Seattle Mariners in 2024 and 2025 demonstrated his willingness to keep returning to the mound.
Jesse Hahn Career Highlights
Across his MLB career with the San Diego Padres, Oakland Athletics, Kansas City Royals, and Seattle Mariners, Jesse Allen Hahn has produced several notable seasons. His 2014 debut season with the Padres and his 2020 season with the Royals stand out as his most effective major league campaigns, while his time in the minor leagues has included stops with organizations such as the Tampa Bay Rays, Los Angeles Dodgers, and Seattle Mariners.
MLB Highlights
Hahn’s first full major league season came in 2014 with the San Diego Padres, when he went 7-4 with a 3.07 ERA in 12 starts. In 2015, his first year with the Oakland Athletics, he posted a 6-6 record and a 3.35 ERA. With the 2020 Kansas City Royals, he appeared in 18 games, going 1-0 with a 0.52 ERA and 19 strikeouts in 17.1 innings pitched.
Jesse Hahn Family
Personal Life
Jesse Allen Hahn has spoken publicly about his older sister, Melissa, who has cerebral palsy, and her presence has been an important part of his personal life and motivation throughout his baseball career.
2025 Season Performance
Jesse Allen Hahn’s 2025 season was defined by repeated transactions with the Seattle Mariners organization. He was released in March, re-signed days later, and shuttled between the Triple-A Tacoma Rainiers and the major league roster throughout the early months of the year. In two early scoreless appearances for the Mariners, he showed he could still contribute at the major league level, and on May 21 he was selected back to the active roster, only to be designated for assignment two days later after allowing three runs in one inning against the Houston Astros.
Following that appearance, Hahn cleared waivers and elected free agency on May 26 before re-signing with Seattle on a minor league contract on June 3. He remained with the organization for the rest of the year before electing free agency on November 6, ending his 2025 campaign. His season illustrated both his continued willingness to compete and the constant movement that has characterized his professional path in recent years.