ArenaMetrix Performance System
ThrowMetrix
A throwing program built on mechanics, arm care and honest measurement — so added velocity comes with added durability, not added risk.
Velocity, command and arm health
What we measure
- Throwing velocity and intent across drill and mound work
- Delivery mechanics through video capture and side-by-side review
- Arm care markers: range of motion, shoulder and elbow screening
- Command metrics — strike percentage and location by pitch type
- Workload tracking across the training block and season
- TrackMan radar data on velocity, spin rate and pitch movement
Built for: Pitchers and position players who want a structured throwing plan rather than more unmeasured reps.
How the program runs
Assessment
Throwing evaluation with our trainers and physical therapy (Dr. Albert LeFran, Athletik RX), plus mobility screen and video capture to establish a baseline and flag the limiting factor.
Build phase
Drill progressions, weighted and constraint work, plus arm care assigned to the athlete's specific needs.
Mound transfer
Movement gains are carried into bullpens and live work, with command tracked as velocity climbs.
Throwing Performance System
The Throwing Performance System is a complete year-round development program led by former professional pitchers Matt Heidenreich and Alex Speas. Designed for pitchers, infielders, outfielders, catchers, and athletes returning from arm injuries, TPS helps players throw harder, move more efficiently, stay healthier, and compete with confidence.
Unlike occasional lessons or one-size-fits-all throwing programs, TPS provides every athlete with an individualized plan based on their age, position, goals, movement patterns, playing schedule, workload, and current needs. As practices, games, tournaments, and recovery demands change, the program adjusts with them.
What’s Included
- Personalized year-round development plan
- Progressive throwing and arm-care programming
- Access to a physical therapist to help prevent injuries and build individualized throwing routines
- Mechanical analysis and skill development
- Velocity, power, accuracy, and command training
- Position-specific throwing instruction
- Strength, mobility, recovery, and workload management
- Regular evaluations, video analysis, and coach feedback
- Remote access to programming and direct coach communication
- Flexible Monday-Friday training around school and team schedules
TPS supports the specific demands of every position. Pitchers can build velocity, improve command, strengthen their arms, and manage workloads. Position players can develop arm strength, faster transfers, better accuracy, and efficient throwing patterns from multiple angles. Athletes returning from arm injuries receive a progressive approach that considers mechanics, movement quality, strength, mobility, recovery, and workload—not simply their symptoms. Athletes also have access to a physical therapist who can help identify movement limitations, support injury prevention, and assist in developing safe and effective throwing routines.
Development continues beyond the facility. Athletes can access their personalized programming, upload videos for analysis, communicate with coaches, and receive adjustments as their schedules and workloads change.
A youth position player, high-school pitcher, college athlete, and athlete returning from injury should not follow the same plan. TPS is built around the individual—not a generic template.
Why a monthly membership works
An athlete’s arm needs care all year, not just during the season. Consistent, year-round work is what keeps athletes healthy, builds velocity and turns progress into results. We also know school schedules, practices and games can get in the way of coming in person every week. That’s why every TPS membership includes virtual programming and flexible scheduling within the month, so your athlete never loses momentum, even during the busiest stretches. Commit to the month, and we’ll work around your life to make every week count.
Ready to get on the schedule?
Complete our form and our instructors will reach out to discuss our program!
Already enrolled
Pick your training days
Current ThrowMetrix athletes select their days below. Once you join you will receive an email from your trainers to set up your Scheduler PW.
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