BoxMatrix

Developing Stronger, More Durable Baseball Players

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MARR STRENGTH® Featured On

Built for Baseball Players. Backed by Proven Training.

BoxMatrix® is a structured strength training system built to support injury prevention, strength development, and balanced movement to increase on-field output. You’ll train with proven methods used at MARR STRENGTH®—plus exclusive shoulder work and optional monthly in-person guidance.

What You Receive.

Get full access to our online strength training system—plus one in-person training session each month in Southlake, TX for hands-on coaching and guidance.

Best Content

Matrix Essentials Program

Your starting point for developing a strong foundation.
Best Content

Shoulder Matrix (Exclusive)

Protect your arm. Support velocity.
Best Content

Workouts of the Day

Progressed training. Updated daily.
Best Content

Train With Us — Southlake, TX

Hands-on coaching. Real feedback.

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price option MONTHLY
MONTHLY

$35

This subscription will give you unlimited access to all of our content monthly + Gym access to our Southlake location.

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