Derin McMains

Director of Mental Conditioning at ReliaQuest

A former professional baseball player, McMains pairs his sports psychology education with extensive experience as a mental performance coach for Major League Baseball teams, including the Arizona Diamondbacks, San Francisco Giants and Seattle Mariners, as well as top-tier organizations. He leverages his past experience to train ReliaQuest on using the power of mindset to drive desired outcomes.


  • Director of Mental Conditioning

    January, 2021 - present


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