Colby Thomas Bio
Colby Grant Thomas (born January 26, 2001) is an American professional baseball outfielder for the Athletics of Major League Baseball (MLB). He made his MLB debut in 2025 after a rapid climb through the Oakland Athletics minor league system. Selected in the third round of the 2022 MLB draft, Thomas began his professional career in 2023 and reached the majors less than three years later.
A product of Valdosta High School in Georgia and Mercer University, Thomas built a reputation as a power-hitting outfielder with plate discipline and above-average speed. His combination of offensive production and athleticism has marked him as one of the more promising young position players in the Athletics organization.
Early Life and Background
Colby Grant Thomas was born on January 26, 2001, in the United States and grew up in Valdosta, Georgia. He attended Valdosta High School, where he developed into a standout baseball player and drew early attention from professional scouts. The Valdosta baseball program gave Thomas a steady platform to refine his hitting mechanics and outfield instincts during his formative teenage years.
As a senior in 2019, Thomas posted one of the most productive seasons in the region, batting .416 with 13 home runs, 45 runs batted in (RBI), and 17 stolen bases. That performance was strong enough to attract the Baltimore Orioles, who selected him in the 37th round of the 2019 MLB draft. Rather than sign a professional contract at that stage, Thomas opted to continue his development in college, a decision that ultimately reshaped his career path.
Path to Baseball
Thomas enrolled at Mercer University, joining the Mercer Bears baseball program to play college baseball at the NCAA Division I level. His freshman season in 2020 was cut short by the cancellation of the campaign due to the COVID-19 pandemic, but he still managed a strong .333 batting average with five home runs and 18 RBI across 16 games. Those numbers hinted at the offensive potential that would later define his prospect profile.
As a sophomore in 2021, Thomas played 53 games for Mercer and hit .247 with 10 home runs and 37 RBI. That summer, he joined the Bourne Braves of the Cape Cod Baseball League, a renowned collegiate summer league, where he batted .228 with four home runs in 29 games. In his junior year of 2022, Thomas broke out offensively, slashing .325 with 17 home runs and 45 RBI over 42 games before a shoulder injury ended his season and led him to commit to a transfer to the University of Florida.
Colby Thomas Career
Early Career (2023)
The Oakland Athletics selected Thomas in the third round, 95th overall, of the 2022 MLB draft, and he signed with the organization to begin his professional career. He made his professional debut in 2023 with the Single-A Stockton Ports of the California League, where he opened the year as a younger outfielder adjusting to wooden bats and longer schedules.
Thomas played well enough in the California League to earn a midseason promotion in early July to the High-A Lansing Lugnuts of the Midwest League. Across 126 total appearances between Stockton and Lansing in 2023, he slashed .286/.351/.493 with 18 home runs, 82 RBI, 39 doubles, and 25 stolen bases. The combined production showed a balanced profile of power, on-base skills, and speed in his first full professional season.
Minor League Breakthrough (2024)
Thomas opened the 2024 season with the Double-A Midland RockHounds of the Texas League, continuing his climb through the Athletics farm system. He produced at the plate in Midland before earning a promotion in mid-June to the Triple-A Las Vegas Aviators of the Pacific Coast League.
In 132 games split between Midland and Las Vegas, Thomas batted .277 with 31 home runs, 92 RBI, and 15 stolen bases, establishing himself as a middle-of-the-order run producer. During the following offseason, he represented Team USA in the Premier 12 Tournament, gaining valuable experience against high-level international competition.
Athletics Era (2025–Present)
Thomas returned to the Las Vegas Aviators to open the 2025 season and quickly made an impact, hitting a home run in the Aviators’ season opener. He played 76 games at Triple-A and slashed .297/.365/.542 with 17 home runs, 70 RBI, and seven stolen bases. His production pushed him to the doorstep of the major leagues.
On June 30, 2025, Thomas was added to the Athletics 40-man roster and promoted to the major leagues for the first time. He debuted that same night as a pinch-hitter against the Tampa Bay Rays at George M. Steinbrenner Field. The next day, Thomas collected his first MLB hit, a double off pitcher Shane Baz, and on August 9, he launched his first MLB home run, a two-run shot off Mitchell Parker of the Washington Nationals. In 49 games with the Athletics, he hit .225 with six home runs and 19 RBI to close his rookie major league season.
Driving Style and Strengths
Thomas fits the profile of a modern power-hitting outfielder with above-average plate discipline and usable speed on the bases. He has shown the ability to drive the ball to all fields, with his best production coming against right-handed pitching and on fastballs in the middle of the zone. Defensively, he covers enough ground in the outfield corners and shows a workable arm, allowing the Athletics to deploy him in left or right field while his offensive game continues to mature.
Notable Events and Milestones
Thomas’s most significant milestones came in quick succession during the summer of 2025, beginning with his first Triple-A home run on opening day in Las Vegas. Within a week of his call-up, he recorded his first MLB hit and later cleared the fences for his first major league home run against Washington. His rapid rise from a 37th-round draft pick out of high school to a major league outfielder in fewer than six years stands as the signature storyline of his young career.
Colby Thomas Career Wins
While Thomas is early in his professional career and has not yet posted a full major league season, his win totals are most accurately tracked through minor league production and team success. Across the Athletics system, he has been part of multiple affiliates that reached the postseason, and his individual accolades include representative honors with Team USA at the Premier 12 Tournament.
Minor League Highlights
Thomas’s most productive minor league season came in 2024, when he combined for 31 home runs and 92 RBI between Double-A Midland and Triple-A Las Vegas. His first professional season in 2023 produced 18 home runs and 25 stolen bases across Single-A Stockton and High-A Lansing, while his 2025 Triple-A campaign featured 17 home runs and 70 RBI before his promotion.
Other Wins & Performances
Beyond his regular-season production, Thomas gained international experience with Team USA in the Premier 12 Tournament during the 2024 offseason. He also posted a strong Cape Cod Baseball League summer with the Bourne Braves in 2021, contributing four home runs in 29 games as a collegiate sophomore.
Colby Thomas Family
Family Background and Racing Lineage
Thomas was raised in Valdosta, Georgia, where his family supported his early involvement in baseball. Detailed information about his parents and siblings has not been publicly confirmed, and specific relatives with professional baseball backgrounds have not been verified.
Personal Life
Thomas keeps his personal life largely private, and confirmed details about a spouse or children have not been made public. He continues to be based around the Athletics organization as he develops his major league career.
2025 Season Performance
Thomas opened 2025 with the Triple-A Las Vegas Aviators and wasted little time making an impression, hitting a home run on opening night. Across 76 games in the Pacific Coast League, he slashed .297/.365/.542 with 17 home runs, 70 RBI, and seven stolen bases, putting himself firmly in the conversation for a major league call-up.
That call-up arrived on June 30, 2025, when the Athletics selected his contract and inserted him into the lineup as a pinch-hitter versus the Tampa Bay Rays. He recorded his first hit the following day and his first home run on August 9 against Washington, finishing his rookie major league stint with six home runs and 19 RBI in 49 games. His late-season debut gave the Athletics a young power-hitting outfielder to build around heading into the offseason.