Plymouth State University

Andy Theriault was elevated to head baseball coach on May 1, 2026, after serving as interim coach for less than a month.
 
Theriault has more than 15 years of coaching experience spanning travel, prep, collegiate and summer baseball. He previously served as the Panthers’ pitching coach from 2019-21, assisting with recruiting and player development, and returned as an assistant in 2026 prior to his promotion. His coaching resume also includes stops at Brewster Academy, Saint Joseph’s College of Maine and Gordon College.
 
Theriault enjoyed significant success with the Brockton Rox of the Futures Collegiate Baseball League (FCBL) from 2017-20. As pitching coach in 2017, he oversaw a staff that led the league in ERA, shutouts and batting average against while winning a league-best 32 games. He later transitioned to hitting coach before being promoted to manager, guiding the Rox to the league’s top record in 2019 and earning All-Star Game managerial honors.
 
A native of Wolfeboro, Theriault was a standout multi-sport athlete at Kingswood Regional High School, earning All-State honors in both baseball and football. He continued his playing career at Castleton University before transferring to Southern New Hampshire University, where he earned a degree in Business Administration.