John O’Neil


John O’Neil became a Co-Owner at CSP-MA in the fall of 2022 after serving as the Director of Performance since 2018. John oversees strength & conditioning coaching, program design, and continuing education at CSP-MA. An accomplished public speaker, John has lectured at more than a dozen national events, including the 2019 ABCA, 2022 World Baseball Coaches’ Convention, and three MA Baseball Coaches Association annual clinics. John coaches youth baseball during his free time, including his work with the Lincoln-Sudbury High School Varsity Baseball Program. He interned in player development for the Baltimore Orioles in 2012. He graduated from Dickinson College with a Bachelor of Science in Mathematics in 2014.

Free Access to Eric’s 47-Minute UNE Lecture

Hip-Shoulder Separation in Rotational Athletes: Making Sense of the Thoracic Spine.

Welcome to Cressey Sports Performance

Over the years, Eric Cressey’s given this lecture to more than 10,000 coaches, players, sports medicine professionals and enthusiasts and it’s been a huge hit. In the video, you will observe a lot of our CSP athletes training and learn:

  • Why different athletes need different approaches to power development?

  • Why it’s essential that you learn to train outside the sagittal plane?
  • Which medicine ball and plyometric variations I use with baseball players?
  • Why not all throwers have identical deceleration patterns or training needs?

  • How your arm care programs can be improved to reduce the risk of injury and improve throwing velocity?