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Sean Isaac

Isaac joins the Lions after professional coaching roles with the Boston Red Sox and Milwaukee Brewers, bringing a progressive, data-driven approach to pitching development that has impacted athletes from the Major Leagues to college baseball. He brings a blend of professional playing experience, progressive player development expertise, and California roots to the Bluff as he helps lead LMU pitching into a new era. 

Isaac joins the Lions after having served as the Double-A pitching coach for the Boston Red Sox, where he led affiliate-level pitching operations, individualized player development planning, utilizing industry leading technology and processes. In 2024, he was selected as a pitching coach in the prestigious Arizona Fall League for the Mesa Solar Sox, working with some of baseball’s top prospects.

Prior to his time in Boston, Isaac held roles with the Milwaukee Brewers’ Triple-A affiliate in Nashville and served on staff at UC Santa Barbara, where he served as Director of Player Development alongside current LMU head coach Donegal Fergus. 

A native of Southern California, Isaac was a 35th-round draft pick by the Los Angeles Angels in 2016 and pitched professionally through 2020, reaching the Triple-A level. He earned his bachelor’s degree in communications from Vanguard University, where he was a two-time First Team All-American.