John Sheehan completed his first season on the La Salle baseball coaching staff in 2021, serving as the team's pitching coach.
It was a remarkable season for La Salle as the Explorers broke a 36-year-old school record for wins in a season in addition to tying the program mark for conference wins. La Salle earned nine year-end awards from the Atlantic 10 Conference, including five all-conference selections. Sheehan mentored freshman phenom Frank Elissalt, who was chosen as a Freshman All-American after finishing second in single season program history with 95 strikeouts. Sheehan also helped lead the Explorer pitching staff to a school record for strikeouts in a season with 432.
From 2018 to 2020, Sheehan was the pitching coach and strength and conditioning coach at Prairie View A&M University, a member of the Division I SWAC Conference. During his time at Prairie View, the pitching staff saw its ERA decrease by 1.27 runs per game as well as a 15 percent reduction in walks and a 25 percent reduction in home runs allowed. The Prairie View pitching staff also saw its strikeout total increase by 20 percent.
Sheehan played baseball at the College of William and Mary from 2009-2014. He was a two-way player his freshman year, both pitching and hitting before undergoing Tommy John Surgery as a sophomore. Sheehan bounced back in his junior season, leading the pitching staff in appearances and opponent batting average. During his senior year, Sheehan was second on the team in wins, innings pitched and ERA.
At the conclusion of his senior year at William and Mary, Sheehan signed a professional contract with the Colorado Rockies. He reached High A while playing for the Modesto Nuts in 2015. At the end of his professional career, Sheehan finished with a 3.49 ERA, 1.18 WHIP and 9.6 K/9.
Following his playing career, Sheehan joined the staff at Salem State University in Salem, Mass. as the team's pitching coach. That season, Salem led the MASCAC Conference in ERA and was second in hits allowed.
In 2018, Sheehan joined the staff at Momentum Physical Therapy, where he attained his Certified Strength and Conditioning Specialist and Precision Nutrition Level 1 coaching certifications. As a strength and conditioning coach at Momentum Physical Therapy, he helped oversee the rehabilitation protocols of different sports injuries, specifically elbow and shoulder injuries in baseball players.
The Westwood, Mass. native earned his bachelor's degree from The College of William and Mary in 2014, interned at Cressey Sports Performance in 2016, and is Driveline Baseball Certified.
