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Greg Chertok is an experienced professional in the fields of performance, leadership, and sport psychology. Currently serving as an Executive Optimization Consultant at R3 Continuum since February 2021, Chertok also acts as a Performance and Leadership Consultant with telos Sport Psychology Coaching from October 2012 to the present. Additionally, Greg functions as a Human Performance Specialist at O2X Human Performance since May 2020 and has been the Owner and Director of Operations at Pitch By Pitch Baseball, Inc. since June 2006. Previously, Chertok served as the Director of Mental Training at CourtSense until August 2022 and as an Adjunct Lecturer at Dominican College of Blauvelt from September 2014 to February 2021. Earlier experience includes serving as the Director of Sport & Exercise Psychology at The Physical Medicine & Rehabilitation Center from 2007 to September 2013. Academic qualifications include a Master’s degree in Sport Psychology from Boston University and a Bachelor's degree in Psychology from Tufts University.