Point your phone at a pitching motion. An AI trained on decades of biomechanics hands back a report card and a drill plan. That is the whole pitch.
The founder photographed the way a scout watches a bullpen: patient, unblinking, waiting for the one detail that gives the athlete away. Here the scout is a camera, and it never looks away. Mustard, Los Angeles.
Here is a fact that should bother anyone who has paid for a lesson: most of what makes elite coaching valuable is not motivation. It is measurement.
Dr. Tom House spent a career figuring out how humans throw. He caught Hank Aaron's 715th home run in the bullpen, then coached Nolan Ryan and, later, quarterbacks like Drew Brees and Tom Brady. Along the way he did something less glamorous and more durable - he measured. Motion capture, force plates, high-speed cameras, athlete after athlete, for more than four decades. The result is one of the largest throwing-biomechanics datasets on earth, and for most of its life it lived where such things usually live: inside expensive facilities, available to people who could get there.
Mustard, the Los Angeles company House co-founded in 2020 with entrepreneur Rocky Collis, mental-performance coach Jason Goldsmith, and former quarterback Luke Collis, is an argument that the dataset should not stay locked up. The argument takes the form of a free app. You film a pitch on an ordinary phone. Computer vision reconstructs the motion, compares it against the model, and returns a report card - metrics, still frames, a stick-figure overlay - plus a personalized set of drills to fix what the numbers flagged.
The interesting move is not the AI. Everyone has AI. The interesting move is refusing to sell it. Mustard does not lead with "computer vision." It leads with Tom House. The technology is the engine; the coach is the reason a parent presses record. That ordering - expertise first, model second - is what separates a useful product from a demo.
Capture the motion on a standard smartphone. No sensors, wearables, or special rig required.
Patent-pending computer vision reconstructs the mechanics and measures them against the biomechanics model.
You get a report card - metrics, still frames, and a stick-figure breakdown of your sequencing.
A personalized drill plan drawn from Tom House's methods tells you what to work on next.
The original product. Grades a pitcher's throwing mechanics from phone video, returns a metrics-driven report card, and prescribes drills using Tom House's methodology. A 2025 integration with Pocket Radar now feeds real-time velocity straight into the analysis.
Launched in 2024 with Golf Digest and major champion Justin Rose. Film your swing from a few angles; the app scores it against a model built from tens of thousands of golfers and returns an AI improvement plan featuring elite instruction.
Team-facing tools that let coaches assign individualized plans, track athlete progress over time, and manage a whole roster from one place.
The stated ambition is a digital platform for all athletic training and scouting. Near-term targets floated by the company include soccer, basketball, volleyball, and tennis.
Two rounds, roughly six million dollars, and an investor list that is hard to assemble by accident. When Nolan Ryan, Drew Brees, Ronnie Lott, Mark Cuban, and Justin Rose all write checks into the same sports app, the pattern is worth noticing.
Former minor-league pitcher turned entrepreneur, running the company that packages House's method into software.
Legendary MLB/NFL throwing coach whose 40+ year biomechanics database is the intellectual core of the product.
Mental-performance coach, bringing the psychological side of athletic development into the platform.
Former professional quarterback, part of the founding team building out the coaching platform.
Launches with $1.7M to bring AI motion analysis to baseball pitchers.
Closes a $3.75M seed round led by the Lake Nona Sports & Health Tech Fund, with Mark Cuban among the backers.
Justin Rose joins as Mustard Golf's first brand ambassador and investor.
Launches Mustard Golf in collaboration with Golf Digest, offering AI-enhanced swing tips.
Integrates with Pocket Radar, piping real-time velocity data into the biomechanical analysis.