James Clark, Owner and Coach at United Pitching Academy
Coach SpotlightUnited Pitching Academy

The 2–3 mph was already there. James Clark helped athletes unlock it.

James Clark, Owner & Coach of United Pitching Academy, can watch a pitcher throw and quickly identify where a pattern breaks down. After 19 years coaching fastpitch pitchers, that’s not the hard part. The hard part is understanding why.

What shows up on the mound, an arm path that collapses, a hip that won’t clear, a release point that drifts, often reflects influences earlier in the movement sequence. Pitching is a full-body action, where force is generated and transferred across multiple segments. Limitations in mobility, stability, or coordination at one joint can contribute to compensations elsewhere.

Coach the breakdown at the surface and you may get temporary fixes. Identify and address contributing factors earlier in the chain, and changes are more likely to persist. That’s the difference between adjusting mechanics and supporting them.

“Students who are compensating around immobile or weak joints often have difficulty maintaining mechanical changes, especially when the underlying limitation isn't addressed.”

James built his coaching system around this principle: identify what may be limiting efficient movement, address it where possible, and then layer skill-specific coaching on top. The goal isn’t to replace mechanics work. It’s to support it with a body that can better execute it.

The right method needed the right tool.

James was already doing corrective work before Demotu. The approach was sound. What the manual process couldn’t provide was speed and consistency at scale.

Running a full assessment, joint by joint, identifying potential compensations, and matching exercises to athlete needs, takes time. Across a full roster, this could significantly limit time available for actual throwing and coaching.

“Doing an assessment took a lot of time out of my day. Then I had to determine which exercises were most appropriate to address what I was seeing.”

The methodology was never in question. The challenge was executing it efficiently and consistently across athletes.

What Demotu makes possible.

James now runs a full movement screen on each athlete in under 60 seconds. Borelli AI breaks the movement data down joint by joint, identifying granular inefficiencies, flagging compensations, and generating a targeted corrective program directly from the findings. The prescription isn’t an interpretation. It comes from what the body actually showed.

Athletes get their program on their own device. They work their correctives between sessions, track their own progress, and show up already further along. They’re not waiting on the next appointment to move forward. They own the process. When athletes can see their own movement data and understand what they’re building toward, they engage differently. The work continues outside the facility because they’re invested in it.

James Clark coaching a pitcher at United Pitching Academy

“I love the time saving aspect for myself, as the assessment process and summarization of results takes a lot of time when done manually. Secondly, I love the fact that they can be responsible for themselves by having the app on their own device.”

James walks into every session with a complete picture of each athlete. The assessment is done. The program is running. He’s coaching from precise, objective data, which is exactly how he’s always approached the work, now at the speed and scale his operation demands.

What it produces.

When contributing limitations are addressed alongside technical coaching, movement patterns often become more consistent. Mechanics that were previously difficult to maintain may improve as the athlete develops the capacity to support them.

At United Pitching Academy, many pitchers have shown velocity increases in the range of 2–3 mph over a 10–12 week period, along with improved pitching consistency. These outcomes likely reflect a combination of mechanical refinement, physical development, and practice.

The improvements are not created in isolation. They are the result of a more connected system working together more effectively.

“Don’t hesitate. Demotu is a game changer.”
James Clark · Owner & Coach, United Pitching Academy
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