Austin Cox Bio
Austin Cox (born March 28, 1997) is an American professional baseball pitcher. He currently plays for the Yokohama DeNA BayStars of Nippon Professional Baseball (NPB). Over the course of his professional career, Cox has also pitched in Major League Baseball (MLB) for the Kansas City Royals and the Atlanta Braves. He made his MLB debut in 2023 after being drafted by the Royals in 2018.
Early Life and Background
Austin Cox was born on March 28, 1997, and grew up in Macon, Georgia, where he attended First Presbyterian Day School. As a young athlete, he split his time between baseball and football, developing the competitive foundation that would later shape his identity as a pitcher. During his high school career, he posted a 15–6 record with a 2.19 ERA, signaling his potential as a prospect.
After going undrafted in the 2015 Major League Baseball draft, Cox chose to honor his college commitment and enrolled at Mercer University. His path through college was not immediate, as his freshman year featured a 2–2 record and a 10.13 ERA across 24 innings. However, he continued to develop on the mound, and by his junior season in 2018, he had earned the role of Mercer’s Friday night starter.
Path to Professional Baseball
During his time at Mercer University, Cox steadily refined his game, finishing his junior year with a 7–4 record and a 4.52 ERA. Over 17 starts that season, he struck out 124 batters in 87+2⁄3 innings, demonstrating the strikeout ability that would become a hallmark of his professional profile. His strong junior campaign placed him on the radar of MLB scouts.
The Kansas City Royals selected Cox in the fifth round, with the 152nd overall pick, of the 2018 Major League Baseball draft. He signed with the organization and was assigned to the Burlington Royals of the Rookie-level Appalachian League for his professional debut. Cox quickly progressed through the minor league system, showing consistency on the mound and building the resume that would eventually lead to a major league opportunity.
Austin Cox Career
Early Career (2018–2020)
Cox began his professional career in 2018 with the Burlington Royals, where he posted a 1–1 record and a 3.78 ERA across nine starts. In 2019, he opened the season with the Lexington Legends of the Single-A South Atlantic League, where he was named an All-Star and earned Pitcher of the Week honors. He was promoted midseason to the Wilmington Blue Rocks of the High-A Carolina League, finishing the year with a combined 8–6 record and a 2.76 ERA over 130+2⁄3 innings, striking out 129 batters.
Like many players in the minor leagues, Cox did not see game action in 2020 after the cancellation of the minor league season due to the COVID-19 pandemic. Despite the interruption, his development continued behind the scenes, setting the stage for his first full slate of upper-level assignments.
Minor League Development and Royals Breakthrough (2021–2022)
Cox started the 2021 season with the Northwest Arkansas Naturals of the Double-A Central and earned a late-season promotion to the Triple-A Omaha Storm Chasers. He finished the year with a 4–1 record and a 4.10 ERA across 63 innings, striking out 56 batters. In 2022, he returned to Omaha and posted a 7–7 record and a 4.21 ERA over 147+1⁄3 innings, showing the durability required of a starting pitcher.
He began the 2023 season back at Omaha and produced a 2.21 ERA across five appearances. On May 3, 2023, the Royals selected his contract and brought him to the major leagues for the first time. He made an immediate impact, setting a modern MLB record by not allowing a hit to any of the first 39 batters he faced. In 24 appearances for Kansas City, Cox posted a 4.54 ERA with 33 strikeouts in 35+2⁄3 innings.
Atlanta Braves Era (2025)
On May 4, 2025, Cox signed a major league contract with the Atlanta Braves and was optioned to the Triple-A Gwinnett Stripers. He was called up to the majors during the season, appearing in 13 games for Atlanta. Over 21+1⁄3 innings, he struck out 22 batters but struggled to a 8.86 ERA. On November 6, he was removed from the 40-man roster and sent outright to Triple-A Gwinnett, then elected free agency the same day.
Driving Style and Strengths
Cox has built his professional identity around strikeout ability, having recorded 129 strikeouts in 130+2⁄3 innings during the 2019 minor league season and consistently missing bats at every level. His repertoire and approach have allowed him to navigate promotions through Rookie, Single-A, High-A, Double-A, and Triple-A. He has demonstrated the stamina to handle full-season workloads as both a starter and a reliever.
Notable Events and Milestones
One of the defining moments of Cox’s career came in 2023, when he set a modern MLB record by going hitless against the first 39 batters he faced. He also endured a serious injury that same year after being struck by a come-backer against the Toronto Blue Jays, which was later diagnosed as a full ACL tear and MCL damage in his left knee. The injury cut short his rookie season and required extensive recovery.
Austin Cox Career Wins
Throughout his professional career, Austin Cox has recorded notable win totals across multiple minor league levels, including an 8–6 mark in 2019 and a 7–7 record in 2022 with Triple-A Omaha. He has yet to record an MLB decision of particular statistical note, with his major league opportunities primarily serving as a developmental proving ground.
Minor League Highlights
Cox’s first professional win came during the 2018 season with the Burlington Royals, while his most recent full-season win total was a 7–7 record across 24 starts with Triple-A Omaha in 2022. In 2019, he was recognized as a South Atlantic League All-Star with the Lexington Legends. Across the Royals organization, he steadily climbed from Rookie ball through the upper minors before reaching the majors in 2023.
Austin Cox Family
Personal Life
Austin Cox is an American professional baseball pitcher who has spent his career in the United States and now in Japan. Public information about his immediate family, marital status, and personal relationships is limited, and he has kept those aspects of his life largely private.
2025 Season Performance
The 2025 season marked a major transition for Austin Cox, beginning with his release from the Kansas City Royals organization on May 4, 2025. He quickly signed a major league contract with the Atlanta Braves the same day and was optioned to the Triple-A Gwinnett Stripers. Across 13 appearances with Atlanta, he struck out 22 batters in 21+1⁄3 innings, though he finished the year with an 8.86 ERA.
On November 6, Cox was removed from the Braves’ 40-man roster and sent outright to Triple-A Gwinnett before electing free agency. Shortly after the season ended, on December 10, 2025, he signed with the Yokohama DeNA BayStars of Nippon Professional Baseball, opening a new chapter of his career in Japan. The move positions him to compete in NPB heading into 2026.