top of page
Meet Coach Zark

Jon Nazarko is a former 2 sport Division I athlete who prides himself on being passionate, hardworking, and diligent towards his craft in pursuit of helping his athletes reach their goals. The Connecticut native got his start at the University of Rhode Island where he worked with baseball, basketball, volleyball, football, golf, swim & dive, track & field, tennis and soccer athletes. For the last 5 years, he has been in professional baseball with the Boston Red Sox and the 2023 World Series Champion Texas Rangers where he worked with 12 current MLB players and numerous Top 100 Prospects. 
Jon holds a Master’s of Science Degree in Kinesiology from the University of Rhode Island, he is a Certified Strength and Conditioning Specialist (CSCS), a Registered Strength and Conditioning Coach (RSCC), as well as Titleist Performance Institute Certified (TPI). He has 9 years of professional experience from College to Pro, and is the Founder of Zark Athletic Performance.


Contact Jon today to set up your consultation or assessment.

Enhancing Performence


Utilizing cutting-edge research and techniques to optimize your physical abilities.


Unlock your full potential with tailored speed training programs.


Enhance your skills through precise video analysis techniques and a Constraints Led Approach.

If you’re looking for the very best in athlete development and the opportunity to achieve your goals then ATi is the place you need to be.

bottom of page