SpinAxis decodes pitching mechanics into four core signal metrics. No hardware required. Enter the data from any Rapsodo, Trackman, or pitch-tracking session and get instant signal intelligence.
Analyze a PitcherEvery pitcher emits a mechanical signal. SpinAxis reads it through four dimensions inspired by the UBKT measurement framework.
How efficiently the arm converts rotational energy into ball spin. The signature of arm efficiency and repeatability.
Quality of the delivery path — measured through extension toward the plate and release point consistency.
How effectively energy moves through the entire kinetic chain from ground force to ball release.
Harmonic coherence — how well all biomechanical components synchronize into a unified delivery.
Pull the numbers from any Rapsodo, Trackman, or HawkEye session. SpinAxis does the rest.
Velocity, spin rate, extension, and release height — the four inputs from any pitch-tracking system.
The engine computes four core metrics and two headline scores using pitch-type-calibrated ranges.
A complete pitcher signal profile card with scores, bar charts, and an AI-generated assessment.
From travel ball to the front office, SpinAxis makes rotational athletics legible.
Stop guessing what the numbers mean. See which dimension of a pitcher's mechanics needs work — Rotational Integrity, Signal Efficiency, or the kinetic chain.
A single Signal Score and Development Index that cuts through noise. Compare pitchers across pitch types with a consistent signal framework.
Get the same quality of pitching intelligence that MLB analytics departments use — without the $3,000 devices or PhD-level analysis.
Free to use. No account required. Just enter the data.
Analyze a Pitcher