Mark has spent over 20 years working in sports as a baseball agent, national TV & radio broadcaster, media relations director, author, producer and coaching convention director.
He is a guest professor each semester at the University of Southern California (USC), educating students of the prestigious Annenberg School for Journalism and Communication on “How To Get A Job In Sports”. Mark also lectures at colleges nationwide on that topic, including Duke, Boston College, TCU, Texas A&M, LSU and San Jose State.
As an MLB agent, his daily responsibilities include managing a myriad of off-field services for Major & Minor League clients and their families, salary arbitration preparation and contract negotiation.
Mark is also a frequent speaker at high schools on how “Character Matters”, offering guidance to families about social media dangers, volunteering and anti-bullying.
Mark was the television play-by-play announcer for MLB Network's National Youth Baseball Championship and his book, Minor Moments, Major Memories, debuted in bookstores in 2005. A dramatic television series inspired by the book was optioned to Sony Pictures Television.
Originally from New York, Mark played baseball at non-scholarship Division II Stonehill College in Massachusetts, where he was team captain his senior year, and graduated with a degree in Communication.
Read the interview in the New York Post: https://nypost.com/2021/04/29/yankees-stars-agent-are-teaching-teens-that-character-matters/
Checkout the interview Mark gave on MLB SiriusXM Satellite Radio regarding Perfect Playcement.
Meet Mark Leinweaver of Perfect Playcement in Manhattan Beach
Mark is interviewed by his Alma Mater Stonehill University. https://www.stonehill.edu/alumni-magazine/winter-spring-2021/alumni-community/hitting-it-out-of-the-park/