Mr. Shearn throws four pitches. K-means clustering struggles with the smaller data set from Milwaukee, but the PFX graph still makes it clear. The full sample is shown, and I think exhibits the need to normalize data. 
Using the "All" as reference, here are the average specs on the pitches:
| Cluster | Start Speed | pfx_x | pfx_z | Spin Direction | Spin Rate |
| 1 | 68.7 | 3.6 | -9.9 | 200.2 | 964.8 |
| 2 | 85.6 | -6.3 | 10.1 | 211.8 | 1386.8 |
| 3 | 80.5 | 3.3 | 3.3 | 139.1 | 553.8 |
| 4 | 87.6 | -2.0 | 13.0 | 188.5 | 1558.3 |
I'll update later with a look at pitch effectiveness, and maybe a little in-progress stuff.
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