Not guesswork. Peer-reviewed biomechanics.

Built on ASMI research

The American Sports Medicine Institute (ASMI) has published the foundational biomechanics literature for baseball and softball since the 1980s. SwingCheck's scoring engine draws on work by Fleisig, Solomito, Escamilla, Fortenbaugh, Werner, Wilk, Reinold, and other ASMI-affiliated researchers — the same studies used by MLB teams, college programs, and orthopedic surgeons.

Why this matters

Most youth players who end up needing Tommy John surgery had mechanical warning signs years earlier — elbow varus torque above age-adjusted thresholds, late arm cocking, poor hip-shoulder separation. Research lets us flag those patterns before they become injuries. Every red flag in SwingCheck maps back to a published study and an age-appropriate safe range.

Scoring is age-group specific. A 10-year-old hitting 65° of hip-shoulder separation is elite for their age. A 17-year-old at the same number is leaving power on the table. We score what's good for you, not what's good for an adult.

Sport-specific, not recycled

Softball windmill pitching is not baseball pitching with a softer ball. It's a fundamentally different motion — different stride, different arm path, different stress distribution. We use softball-specific reference ranges from softball-specific studies. No shortcuts.

Benchmarked against MLB Statcast

Academic studies tell us what mechanics are safe and efficient. Statcast data tells us what the top of the sport actually looks like. SwingCheck's Pro Prospect Combine scores your exit velocity, bat speed, sprint speed, pop time, and pitch velocity against real MLB distributions — the same data feed used by major-league front offices.

Every combine number you post rolls up into a percentile against the pros. A 14-year-old with a 75 mph exit velocity isn't just "good" — they're in the top X% for their age and pointed at the top Y% of MLB draftees at their position.