Mark Chilivetis has been with the Plano Wildcats Baseball staff, coaching Junior Varsity since 2013. Coach Chili graduated from the University of Texas at Austin before moving to North Texas in 2009. Prior to joining Plano Senior High, he was at both Jasper High School and Clark High School, where he taught history and coached freshman football and track. Coach Chili currently teaches Government and Economics and is the Receivers Coach and Special Teams Coordinator for the Plano Varsity Football Team. He and his wife Emily, live in the Plano area with their two children, Abby and Hayes. Coach Chili is excited to continue the tradition of Plano Wildcat Baseball.

Coach Zeller started teaching at Plano Senior High School in 2025 after spending previous years as a long term substitute. He currently teaches in the Strive Special Education Department. Before transitioning into education, Coach Zeller had a successful career in the retail industry, focusing on corporate training and new store development for several Fortune 500 companies.
A proud alumnus of the University of Nevada, Las Vegas (UNLV), Coach Zeller earned a bachelor’s degree in business management, finance, and accounting while also playing on the university’s baseball team. He served as a volunteer for the Plano Baseball program in 2024 and is now a JV coach.
Coach Zeller is a proud parent to both a daughter and son, who are recent graduates of Plano Senior. He and his wife have been actively involved in the school community, serving on the PTA Board. You may have also seen him hosting one of the Senior lunches.