Griffin Jax Bio
James Griffin Jax, known professionally as Griffin Jax, is an American professional baseball pitcher for the Tampa Bay Rays of Major League Baseball (MLB). Born on November 22, 1994, in Greenwood Village, Colorado, Jax has built a reputation as a reliable right-handed reliever since reaching the majors in 2021. Beyond his work on the mound, he serves as an officer in the United States Air Force Reserve, balancing a professional sports career with continued military commitment.
Jax first came to national attention as a standout at the United States Air Force Academy, where he developed into one of the top college pitchers in the country. The Minnesota Twins selected him in the 2016 MLB Draft, and he spent several years moving through the minor leagues while fulfilling early military obligations. After establishing himself in the Twins bullpen, Jax was traded to the Tampa Bay Rays in 2025 and continues to pitch in a high-leverage role.
Early Life and Background
James Griffin Jax was born and raised in Greenwood Village, Colorado, a suburb south of Denver. He attended Cherry Creek High School, where he quickly emerged as one of the most talented high school pitchers in the state. During his senior year in 2013, Jax went 7-1 with a 1.74 ERA and was named Colorado’s Gatorade Baseball Player of the Year, drawing attention from professional scouts.
Although the Philadelphia Phillies selected him in the 12th round of the 2013 MLB Draft, Jax chose not to sign and instead enrolled at the United States Air Force Academy. He later transferred and continued his education at Colorado State University, where he has pursued a graduate degree in business administration while continuing his professional baseball career.
Jax grew up in a deeply athletic household. His father, Garth Jax, played for 10 seasons in the NFL for the Dallas Cowboys and the Arizona Cardinals during the mid-1980s to the mid-1990s, providing Griffin with an early model of professional athletic discipline.
Path to Baseball
Jax’s path to professional baseball began at the United States Air Force Academy, where he played college baseball for the Air Force Falcons. His first two seasons were challenging, as he posted a 5.86 ERA as a freshman and a 5.17 ERA as a sophomore. During the summer of 2015, between his sophomore and junior years, he sharpened his skills with the Eau Claire Express of the Northwoods League.
His junior year in 2016 marked a dramatic turnaround. Jax started 15 games for the Falcons, going 9-2 with a school-record 2.05 ERA, striking out 90 batters while walking only 10 in more than 105 innings. He was named the Mountain West Conference Co-Pitcher of the Year alongside Jimmy Lambert, which helped elevate his draft stock.
Following that junior campaign, the Minnesota Twins selected Jax in the third round of the 2016 MLB Draft. He signed for $645,000 and began his professional career in the minor leagues, while also preparing to fulfill his required active-duty service in the United States Air Force.
Griffin Jax Career
Early Career (2016-2020)
Jax made his professional debut in 2016 with the Elizabethton Twins of the Rookie-level Appalachian League, pitching 8⅔ innings. In 2017, his season was cut short after only five starts when he was required to report to active duty at Cape Canaveral, Florida. Before being called up, he had gone 2-2 with a 2.61 ERA between Elizabethton and the Cedar Rapids Kernels of the Single-A Midwest League.
In 2018, Jax was accepted into the United States military’s World Class Athlete Program, which allowed him to count his training toward his required five years of active duty while playing minor league baseball full-time. That season, he pitched for the Fort Myers Miracle of the High-A Florida State League, going 3-4 with a 3.70 ERA across 15 games. He then played in the Arizona Fall League. Jax began 2019 with the Pensacola Blue Wahoos of the Double-A Southern League, where he was named an All-Star, and finished the year with the Rochester Red Wings of the Triple-A International League, posting a combined 5-7 record with a 2.90 ERA across 23 starts. He did not appear in a minor league game in 2020 due to the cancellation of the season caused by the COVID-19 pandemic.
Minnesota Twins Breakthrough (2021-2025)
Jax was selected to the 40-man roster and promoted to the major leagues for the first time on June 5, 2021. He made his MLB debut on June 8, 2021, in relief at home against the New York Yankees, becoming the first graduate of the United States Air Force Academy to appear in an MLB game. He finished the 2021 season with a 6.37 ERA over 14 starts and four relief appearances while still serving as a captain in the Air Force Reserve.
In 2022, Jax transitioned into a full-time relief role for the Twins, appearing in 65 games out of the bullpen and compiling a 7-4 record with a 3.36 ERA and 78 strikeouts across 72⅓ innings. He followed that with 71 relief outings in 2023, posting a 6-10 record and 3.86 ERA with 68 strikeouts across 65⅓ innings.
The 2024 season represented Jax’s most accomplished year in the majors. He set career highs with 10 saves, 95 strikeouts, a 2.03 ERA, and a 0.87 WHIP across 72 appearances, cementing his value as a late-inning option. In 2025, before being traded, he pitched in 50 games for the Twins and logged a 1-5 record with a 4.50 ERA and 72 strikeouts over 46 innings.
Tampa Bay Rays Era (2025-Present)
On July 31, 2025, the Minnesota Twins traded Griffin Jax to the Tampa Bay Rays in exchange for pitcher Taj Bradley. The deal marked a new chapter in his career and provided the Rays with a veteran right-handed reliever. Before the trade, Jax had appeared in 23 games for the Twins in 2025, going 0-2 with a 3.60 ERA and 27 strikeouts across 20 innings.
Since joining Tampa Bay, Jax has continued to handle a meaningful bullpen role, bringing postseason experience and a track record of high-leverage outs to a young Rays staff. He wears jersey number 22 for Tampa Bay and has remained a steady presence in middle and late relief.
Through the early part of his Rays tenure, Jax has continued to post competitive strikeout numbers and has provided the team with a dependable arm as the organization navigates its roster around him.
Driving Style and Strengths
Jax is known for his command, low walk rate, and ability to generate swings and misses in key counts. He pairs a deep pitch repertoire with a calm demeanor on the mound, traits that have made him effective in high-leverage relief roles. His partnership with Twins coaching staffs during his development helped him refine his strike-throwing approach, and that consistency has carried over to his work in Tampa Bay.
Notable Events and Milestones
Among Jax’s most notable milestones is becoming the first United States Air Force Academy graduate to appear in a Major League Baseball game, a feat he accomplished on June 8, 2021. He also set multiple career highs in 2024, including 10 saves and a 2.03 ERA, and was part of the 2026 World Baseball Classic roster representing the United States.
Griffin Jax Career Highlights
Griffin Jax has compiled a steady resume of wins and consistent relief appearances since debuting in Major League Baseball in 2021. His career has been defined less by headline-grabbing totals and more by dependable performance in high-leverage innings for two organizations.
MLB Highlights
In the majors, Jax has built a reputation as a reliable bullpen arm, recording double-digit saves in 2024 and posting a sub-2.50 ERA that same season. He recorded his first MLB strikeout against Tyler Wade of the New York Yankees during his 2021 debut, a small but symbolic moment as the first Air Force Academy graduate to reach the majors.
His most recent standout outing came in 2024, when he set career highs across multiple categories while serving as a key late-inning option for the Twins. He has since been traded to the Tampa Bay Rays, where he has continued to handle meaningful relief responsibilities.
Other Wins and Performances
Jax earned All-Star recognition in 2019 with the Pensacola Blue Wahoos of the Double-A Southern League and was named the Mountain West Conference Co-Pitcher of the Year in 2016. He was also selected to represent the United States at the 2026 World Baseball Classic, where he was part of the team competing in Miami.
Griffin Jax Family
Family Background and Racing Lineage
Griffin Jax comes from a strong athletic family. His father, Garth Jax, played in the NFL for 10 seasons with the Dallas Cowboys and the Arizona Cardinals, giving Griffin an early understanding of what it takes to compete at the professional level. That athletic background helped shape Griffin’s path into competitive baseball from a young age.
Personal Life
Griffin Jax married his wife, Savannah, in January 2021 in Gilbert, Arizona. Savannah also holds the rank of captain in the United States Air Force, making the couple one of the more prominent military families in professional baseball. In March 2023, the couple welcomed their first child, a daughter. Jax continues to pursue a graduate degree in business administration from Colorado State University.
2025 Season Performance
The 2025 season has been a year of transition for Griffin Jax. He opened the year in the Minnesota Twins bullpen, pitching in 50 games and logging a 1-5 record with a 4.50 ERA and 72 strikeouts over 46 innings before the trade deadline. His work as a steady middle-relief option helped stabilize the Twins’ pitching staff during the first half of the year.
On July 31, 2025, Jax was traded to the Tampa Bay Rays in exchange for Taj Bradley, beginning a new chapter in his career. Joining a young Rays pitching staff, Jax has continued to record strikeouts at a strong rate and provide a veteran presence in high-leverage spots. His transition into the Tampa Bay bullpen has been marked by consistency and a willingness to take on challenging assignments.
Looking ahead, Jax is expected to remain a key part of the Rays’ relief corps, with the potential to be deployed in late-inning situations as the team evaluates its postseason roster. His combination of military discipline, low walk rate, and high strikeout totals make him a valuable asset for Tampa Bay as the 2025 season continues to unfold.
