Seth Brown Bio
Seth William Brown (born July 13, 1992) is an American professional baseball outfielder and first baseman who is a free agent. He has previously played in Major League Baseball (MLB) for the Oakland Athletics. Brown made his MLB debut in 2019 and developed into a reliable power-hitting corner player for the franchise over six seasons.
A native of the Pacific Northwest, Brown worked his way through junior college and NAIA baseball before being drafted by the Oakland Athletics. He spent parts of the 2019 through 2025 seasons in the majors and is best known for a power stroke that produced multiple 20-plus home run seasons with Oakland.
Early Life and Background
Seth William Brown was born on July 13, 1992, in Klamath Falls, Oregon, and raised in the same region. He grew up as one of seven siblings, with the family eventually moving to Medford, Oregon, ahead of his senior year of high school in order to shorten his mother’s commute to work.
Following the family move, Brown attended North Medford High School, where he was named first-team All-Southwest Conference and second-team OSAA Class 6A All-State as a senior. He also played American Legion baseball for the Medford Mustangs, where he was a teammate of Major League pitcher Braden Shipley. His younger brother, Micah, also played baseball at Lewis–Clark and was later drafted by the Miami Marlins in the 2017 MLB draft.
Path to Baseball
Brown began his college career at Linn–Benton Community College, playing two seasons and earning first-team All-Southern Region honors from the Northwest Athletic Association of Community Colleges as a sophomore. On the recommendation of Linn–Benton head coach Greg Hawk, he transferred to Lewis–Clark State College and was forced to redshirt his junior season due to academic issues.
In his only season playing for the Lewis–Clark State Warriors, Brown emerged as one of the top NAIA hitters in the country. He was named a second-team National Association of Intercollegiate Athletics (NAIA) All-American after posting a .386 batting average, leading the NAIA with 23 home runs, and driving in 82 runs while scoring 78 times as the Warriors won the 2015 NAIA World Series. He graduated from Lewis–Clark with a degree in criminal justice.
Seth Brown Career
Early Career (2015-2018)
The Oakland Athletics selected Brown in the 19th round, with the 578th overall pick, of the 2015 Major League Baseball draft. After signing, he was assigned to the rookie-level Arizona League Athletics before a quick promotion to the Vermont Lake Monsters of the Low-A New York-Penn League. Brown batted .289 with 19 doubles, three home runs, 35 RBI, and 32 runs scored, earning a New York-Penn League All-Star selection and the Lake Monsters’ team MVP award.
He skipped Single-A and began 2016 with the High-A Stockton Ports, hitting .241 with eight home runs and 53 RBI. In 2017, he returned to Stockton and broke out offensively, being named a California League All-Star and Minor League Baseball’s Player of the Month for August while leading the California League with 30 home runs and 109 RBI. Brown spent 2018 with the Double-A Midland RockHounds, batting .283 with 14 home runs and 90 RBI.
Oakland Athletics / Athletics Breakthrough (2019-2021)
Brown began the 2019 season with the Triple-A Las Vegas Aviators, hitting .297 with 37 home runs, second in the Pacific Coast League, at the time of his promotion. The Athletics selected his contract on August 26, 2019, and he debuted that night against the Kansas City Royals, recording his first career hit, a single off Jorge López, in his first at bat. He went 2-for-6 with an RBI and two runs scored in a 19-4 win and finished his first Major League season batting .293 in 26 games.
He appeared in only seven games during the shortened 2020 season. Brown had his proper rookie campaign in 2021, hitting .214/.274/.480 with 20 home runs and 48 RBI across 111 games, establishing himself as a regular in the Oakland lineup.
Oakland Athletics / Athletics Continued (2022-2025)
On June 11, 2022, Brown hit a go-ahead grand slam off Eli Morgan of the Cleveland Guardians to lead the Athletics to a 10-5 victory. In 2022 he batted .229/.295/.436, with 39.2 percent of the pitches thrown to him being fastballs, the lowest rate of any major leaguer. On January 11, 2024, Brown avoided arbitration by signing a one-year, $2.6 million contract with Oakland, the second-highest contract on the team for a position player that year.
He made 33 appearances for the Athletics in 2025, hitting .192/.311/.288 with one home run, three RBI, and one stolen base. On May 23, 2025, Brown was designated for assignment, cleared waivers, and was sent outright to Triple-A Las Vegas on May 25. He was added back to the active roster on June 6, recorded one hit in five games, and suffered a left elbow injury before being released by Oakland on June 26, 2025.
Arizona Diamondbacks (2025)
On July 2, 2025, Brown signed a minor league contract with the Arizona Diamondbacks organization. In 26 appearances for the Triple-A Reno Aces, he batted .291/.381/.544 with six home runs and 21 RBI. Brown was released by Arizona on August 10, 2025, after triggering an upward mobility clause in his contract.
Notable Events and Milestones
Brown’s most memorable moment came on June 11, 2022, when his go-ahead grand slam off Cleveland’s Eli Morgan capped a 10-5 Athletics victory. He set a notable plate-discipline mark that same season, seeing the lowest percentage of fastballs among all major leaguers, and he earned recognition across multiple minor league levels, including New York-Penn League All-Star and Lake Monsters team MVP honors in 2015 and California League All-Star and Minor League Player of the Month accolades in 2017.
Seth Brown Career Wins
Oakland Athletics / Athletics Highlights
Brown’s MLB career was spent entirely with the Oakland Athletics franchise from his 2019 debut through his 2025 release. His most consistent offensive season came in 2021, when he hit 20 home runs and drove in 48 runs across 111 games, followed by another double-digit home run year in 2022 highlighted by his go-ahead grand slam against Cleveland.
Seth Brown Family
Family Background and Racing Lineage
Seth William Brown grew up as one of seven siblings in Klamath Falls, Oregon, before his family relocated to Medford, Oregon, during his senior year of high school. His younger brother, Micah, also played baseball at Lewis–Clark State College and was drafted by the Miami Marlins in the 2017 MLB draft, giving the family a notable baseball lineage.
Personal Life
Brown married Brittaney Niebergall, a former Lewis–Clark State basketball player who was named the NAIA Freshman Player of the Year and later became a middle school teacher and basketball coach. He graduated from Lewis–Clark with a degree in criminal justice and has worked for the Idaho Department of Fish and Game during his offseasons.
2025 Season Performance
Brown began 2025 with the Oakland Athletics and appeared in 33 games, hitting .192/.311/.288 with one home run, three RBI, and one stolen base. He was designated for assignment on May 23, cleared waivers, and was outrighted to Triple-A Las Vegas on May 25 before being added back to the active roster on June 6. He recorded one hit in five games before a left elbow injury, and Oakland released him on June 26, 2025.
On July 2, 2025, Brown signed a minor league contract with the Arizona Diamondbacks and joined the Triple-A Reno Aces. In 26 appearances for Reno, he batted .291/.381/.544 with six home runs and 21 RBI, showing the power stroke that had defined his earlier Oakland tenure.
Brown was released by Arizona on August 10, 2025, after triggering an upward mobility clause in his contract, returning him to free agency. He finished 2025 as a free agent, with his career power-hitting track record and his 2021 20-homer season serving as the foundation for his next opportunity.