Sean Coyne

Sean Coyne

• Bats Right, Throws Right
• Height 6' 0", Weight 18 lbs.
• School Westmont College
• High School St. Augustine High School (San Diego)

BR Register page

Biographical Information

Sean Coyne played college ball at Westmont College from 2015-2019 where he pitched mostly in relief. He graduated with a degree in kinesiology.

Coyne began his coaching career soon after graduating. In the fall of 2019 he was a part-time pitching coach for Scripps Ranch High School. In 2020 he interned at Driveline Baseball, a premier training facility in the Seattle, WA area. Coyne returned to Westmont in 2021 as a part-time assistant pitching coach for the Warriors while also working as a groundskeeper.

These various coaching efforts led to pitching coach positions with the ACL Dodgers in 2022 and the Rancho Cucamonga Quakes in 2023-2024. Coyne led the Quakes 2024 pitching staff to 1,282 strikeouts, the third-most in the California League despite the fewest innings pitched. The Dodgers appointed Coyne as pitching coach of the Great Lakes Loons in 2025 and Ontario Tower Buzzers in 2026.

Related Sites

• Westmont College Bio
• Someone I Want on my Team