Biography
Brandon Michael Eisert (born January 19, 1998) is an American professional baseball pitcher for the Chicago White Sox of Major League Baseball (MLB). He has previously played in MLB for the Toronto Blue Jays. He made his MLB debut in 2024.
Career
Toronto Blue Jays
Eisert was drafted by the Toronto Blue Jays in the 18th round, with the 537th overall pick, of the 2019 Major League Baseball draft. He did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.
Eisert made his professional debut in 2021, splitting the year between the Single–A Dunedin Blue Jays, High–A Vancouver Canadians, and Double–A New Hampshire Fisher Cats. In 32 relief outings split between the three affiliates, he accumulated a 6–1 record and 3.55 ERA with 82 strikeouts across 63+1⁄3 innings pitched.
Eisert spent the 2022 campaign with the Triple–A Buffalo Bisons, making 45 appearances and recording a 3.41 ERA with 77 strikeouts across 60+2⁄3 innings of work. He returned to Buffalo in 2023, posting a 4–3 record and 4.17 ERA with 76 strikeouts and 2 saves in 59 games. Eisert began the 2024 season with Buffalo, and struggled to a 6.35 ERA across 19 contests.
On June 17, 2024, Eisert was selected to the 40-man roster and promoted to the major leagues for the first time. In 3 games during his rookie campaign, he posted a 4.05 ERA with 2 strikeouts across 6+2⁄3 innings pitched.
Eisert was designated for assignment following the signing of Anthony Santander on January 20, 2025.
Chicago White Sox
On January 23, 2025, Eisert was traded to the Tampa Bay Rays in exchange for cash considerations. He was designated for assignment by the Rays on February 3. Eisert was claimed by the Chicago White Sox on February 7.