"I trained with Frank throughout the 2015 offseason at Cressey Sports Performance in Hudson, Masschusetts. He always brought his A-game to the facility, delivering tons of energy and serving as a positive influence to all the younger athletes. Frank has a lot of focus and intends on making his athletes better every single time they walk through the door. Between arm-care protocols and heavy lifts like squats and deadlifts, Frank has a strong understanding on how the human body works to go along with his outgoing and caring personality."

Austin DeCarr
Pitcher, New York Yankees Organization

"I worked with Frank at Cressey Sports Performance in Hudson, Massachusetts. It was a pleasure to train with him this past off-season. He is extremely knowledgeable and passionate about helping his athletes. His attitude was infectious and he made the gym a more pleasant environment for everyone. Frank took a vested interest in my journey with gaining weight, constantly pushing me to maximize my diet and workouts. After an off-season of working with him, I am excited to see how my training translates onto the field this upcoming season."

Morgan McSweeney
Pitcher, Wake Forest (Class of 2020)

"Frank assisted me through my initial assessment at Cressey Sports Performance in the fall of 2015. I came to CSP to increase my overall strength while maintaining the proper health needed to compete on a daily basis throughout the season. Frank brought 110% energy day in and day out, and made sure my technique was solid on every rep of every set. I'm excited to see how the 2016 season developed, after aid from Frank and the rest of the CSP staff."

Carson Cross
Pitcher, St. Louis Cardinals Organization


"Frank Duffy’s expertise was, without question, a valuable asset in my development during the 2015 offseason at Cressey Sports Performance. His guidance has helped in arming me with the knowledge necessary to continue to grow and progress. Better yet, Frank takes a genuine interest in the success of the athletes he serves, and I know without a doubt that whoever he works with in the future not only benefits from a fantastic strength coach, but an even better person."

Andrew Chin
Pitcher, New York Yankees Organization

Fitness Professionals

"I had the pleasure of working alongside Frank during his internship at Cressey Sports Performance and can safely say that he possesses a level of technical coaching skill and confidence well beyond his years. Frank always amazes me with his willingness to put others first, a quality often forgotten in an industry full of oversized egos. I know that anyone who trains with Frank will get top-notch coaching and a highly-entertaining experience.

Tony Bonvechio
Strength Coach, Cressey Sports Performance


"Frank Duffy is among the most driven and informed young fitness professionals I've ever seen come through the doors of Cressey Sports Performance. Having completed both our CSP internship and mentorship programs, I can say with confidence that his coaching skill set is every bit as big as his personality."

Pete Dupuis
Business Director and Co-Founder, Cressey Sports Performance