If you don’t own a Blast Motion baseball sensor, you should. We’ve been using Blast sensors for quite some time now and we are very impressed. Frankly they are very easy to use and they don’t require calibration prior to hitting. The only shortfall we discovered early on was how all the metrics related to each other, which actually prompted this internal write-up. Blast reports 3 swing quality scores, Plane, Connection and Rotation, which they also refer to as PCR. Their scores (20-80) are based on relative measurements of similar age groups and skill levels. The sensor provides 10 pre-contact metrics categorized as follows:
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