Matt Brash is a Canadian professional baseball pitcher for the Seattle Mariners, recognized for a power repertoire built around a heavy fastball and a swing-and-miss slider. Drafted by the San Diego Padres in 2019 out of Niagara University, he was traded to Seattle in 2020 and developed into a high-leverage reliever. He debuted in the majors in 2022, was the winning pitcher when the Mariners clinched their first postseason berth since 2001, and led the American League with 78 appearances in 2023. This tag page collects news, articles, interviews, and updates covering his MLB career, injury recovery from 2024 Tommy John surgery, and his 2025 return to the Seattle bullpen.