Tyler Sullivan was named the 15th Marietta College Baseball head coach in the 152-year history of the program on June 16th, 2026.
Sullivan spent three years as an assistant coach at the NCAA Division I level working with hitters and infield defense. He was the offensive coordinator at Eastern Michigan University in 2024 before moving to Longwood University. Prior to Eastern Michigan, Sullivan was an assistant coach at NCAA Division II Seton Hill University for five seasons where he worked with the Griffin hitters, infield defense, and baserunning. He helped lead the Griffins to three NCAA Tournament appearances including a trip to the Division II World Series in 2021.
Off the field, Sullivan was Seton Hill’s academic coordinator. The Griffins were PSAC Academic Champions four straight years from 2019-22. In addition, as an American Sports & Fitness Association (ASFA) certified trainer, Sullivan served as the strength & conditioning coach for the Griffin baseball and women’s lacrosse teams.
Sullivan started his collegiate playing career at the University of Evansville helping the Aces win a Missouri Valley Conference championship. He transferred to Seton Hill and led the Griffins to a pair of Pennsylvania State Athletic Conference titles earning Most Valuable Player honors at the PSAC Tournament in 2018.
A 2017 graduate of Seton Hill, Sullivan earned a bachelor’s degree in Sports Management. He completed an MBA in Management from Seton Hill in 2018.