Nineteen years
in pro baseball.
One idea for youth.
See what Matt built: the ACWR dashboard and every shipped feature, or parent and coach pricing.
The job
For eight seasons with the Seattle Mariners, I helped manage the arms. Workload monitoring, recovery protocols, return-to-throw progressions. ACWR was one of the frameworks we used daily. The work was invisible when it went right.
The gap
Every winter, clinics filled with kids coming back from Tommy John or labrum work. Most were preventable in hindsight. Too many throws across too many teams. Not enough recovery. Nobody watching the trend line. The tools we had in pro ball had never made it down.
The idea
DAL is what I wish every parent and coach had. The pro-level framework, translated for a 13-year-old and the adults who care about them. Not another training app. Not a coach replacement. A number on a screen that starts a conversation before the arm tells us something worse.
The principle
DAL doesn't make decisions. It starts conversations. The data is clear. The next step is always yours.