OWNER AND HEAD TRAINER

Casey Cunningham, Head Trainer and Owner of Grit Athletics LI, brings a wealth of experience in strength and performance training. A former four-year starter at Chaminade Baseball and a two-time All-League CHSAA player, he earned a Division II scholarship and continued his athletic career at the collegiate level. His passion for training led him to work with athletes across multiple sports, helping them develop strength, speed, and agility while focusing on injury prevention and biomechanics.

With experience training over 100 collegiate athletes in baseball, football, soccer, field hockey, women’s basketball, and wrestling, as well as 12 professional baseball players, Casey has established himself as a trusted coach in the sports performance industry. He has served as the Head Strength Coach at Next Level Baseball, a Strength Coach at P3, and the Strength and Conditioning Coach for the LuHi Varsity Baseball team. Additionally, he has worked as a performance trainer at Infinity Sports, specializing in enhancing athletic performance at all levels.

Casey holds certifications from Parisi Speed School, NASM, and ACE and serves as a mobility consultant for Biomechanics in Motion. His expertise in speed, agility, and strength training has made him a sought-after trainer for athletes looking to take their game to the next level. At Grit Athletics LI, he is committed to providing elite-level training programs that empower athletes to maximize their potential and achieve their goals.

TRAINER

TRAINER

TRAINER