“At Functional Precision, we believe that every elite athlete is built, not born. Our mission is to empower the next generation of student athletes by refining their movement patterns and engineering a foundation of excellence that translates from our lab to the field of play.”
“Founded by Dr. Rettig, a board-certified specialist in both Pediatrics and Sports Medicine, Functional Precision was born out of a unique understanding of how young bodies grow, move, and excel. We don’t just look at how an athlete plays; we look at how they move. By applying a developmental lens to performance training, we help athletes tune their bodies to move with maximum efficiency and minimum waste.”
Whether you are a middle schooler finding your footing, a high school standout, collegiate or recreational athlete looking for that competitive edge, our approach remains the same: Performance Refined. We treat every athlete like a high-performance machine that requires precise calibration.
We are a cash-only operation and do not accept health insurance (including FSA/HSA). We ask that all participants be pain and injury-free so we can focus entirely on taking your game to the next level.
While Dr. Rettig brings extensive medical expertise to the table, Functional Precision is a performance venture, not a medical clinic. Our goal is to optimize healthy athletes, not to diagnose injuries or provide rehabilitation.
To empower the next generation of athletes by refining their movement mechanics and building a foundation of performance excellence that translates from the lab to the field.
To cultivate a community of elite athletes who move with purpose, play with precision, lead with excellence and find greater enjoyment in their sport.
We analyze biomechanics and use data-driven methods to pinpoint and resolve performance barriers, helping you reach your peak.
We analyze movement inefficiencies, correct them, and rebuild your mechanics for maximum power, efficiency, and consistency.
Vision drives timing, reaction, and decision-making. We assess how quickly and accurately athletes process visual information under game conditions.
Functional Precision offers a proprietary, data-driven assessment that reveals how an athlete’s movement patterns impact performance. We provide a clear, actionable roadmap to enhance efficiency, power, and overall athletic potential.
Pricing plans are designed to improve movement, power, and overall athletic performance.
No. Functional Precision is not a medical clinic.
While our founder, Dr. Rettig, is board-certified in Pediatrics and Sports Medicine, our focus is strictly on performance optimization, not injury diagnosis or rehabilitation. We specialize in biomechanics, movement efficiency, and athletic development for healthy athletes.
Not at all.
Your coach focuses on strategy, skill, and competition. We focus on how your body moves.
We support your training by refining movement patterns so you can better execute what your coaches are teaching. We enhance your performance system; we don’t replace it.
No.
Our services are performance-based and not medical treatment, so they are not covered by insurance. Functional Precision operates as a cash-only service and does not accept health insurance, FSA, or HSA payments.
No.
All athletes must be fully pain-free and cleared for activity before participating. If you are recovering from an injury, we recommend completing your medical treatment or physical therapy before beginning performance training with us.
It means we focus on how you move, not just how you play.
We don’t change your style. We refine it by removing inefficiencies that limit speed, power, and consistency, so your performance becomes more efficient, repeatable, and effective.
It will improve how you perform, not change who you are as an athlete.
Our goal is to enhance your natural abilities by improving movement efficiency so your performance shows up more consistently under pressure.
We work with student-athletes of all skill levels. This includes:
Regardless of where you are in your journey, our analysis is designed to identify and bridge the gap in your physical performance.
To maximize your results, keep these three pillars in mind:
We know investing in performance training comes with questions. Here you’ll find clear answers about our approach, process, and how we help athletes move better.

Working with Functional Precision completely changed how I understand my swing. I always thought I just needed more strength, but the analysis showed me it was actually my movement patterns holding me back. Everything finally clicked.

I had never seen my mechanics broken down like this before. The 2D and movement analysis showed things I was completely unaware of. My consistency and power improved within weeks.

I always struggled with my serve consistency. After the assessment, I realized my mobility and sequencing were the issue. The clarity I got from Functional Precision was unlike anything I’ve experienced in training.

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