Meet Your Coach, David Zetts

Business coach and personal trainer for referees

Years of Experience
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Clients Coached
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Helping Referees Stay in the Game—Stronger, Faster, and Longer

With a degree in Exercise Physiology and over a decade of experience as a basketball referee, I know firsthand the physical and mental demands of officiating.

Most referees juggle full-time jobs, families, and other responsibilities, leaving little time for fitness—yet staying in peak shape is non-negotiable if you want to perform at your best.

For five years straight, I was a top-performing personal trainer at Equinox, coaching clients to reach their athletic potential. But I saw a gap: referees, the ones responsible for maintaining the integrity of the game, rarely had access to targeted training designed for their specific needs.

That’s why I created Referee Advantage—a comprehensive, time-efficient training system built specifically for sports officials.

What I Do

I work with male and female referees in every sport, helping them:

My Mission

Whether you’re calling games at the high school level or officiating professionally, your fitness matters. My mission is to help you become a better referee by getting into the best shape of your life—without wasting time on workouts that don’t deliver results.

Ready to Level Up Your Game?

Apply to Referee Advantage to see if you're a good fit for the program.

Apply Now →Learn More