We went up to SmartKage headquarters in Tyngsboro, Mass., and put the sleeves on Nate, a local high school junior. We then fired up Motus Global’s bullpen mode – first in the new motusTHROW app, and then in the legacy mThrow app. At the app’s direction, Nate threw a mix of fastballs, curveballs, and changeups. A voice from the iPhone instructed him which pitch to throw, whether to throw from the windup or the stretch, and what part of the strike zone to aim for. Each of the two sessions consisted of 21 pitches, simultaneously tracked by SmartKage’s PITCHf/x system.
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