Tuesday, November 22, 2022
Seam Orientation Update
We've updated the animation of the pitcher pages to now use their actual(*) seam orientation, rather than the default seam orientation.
For example, we noted a while ago that Felix Bautista throws a 2-seam fastball. This would almost always make us call it a sinker. However, it behaves like a 4-seamer. So the old animation would show a 4-seam orientation. Instead, now it accurately shows a 2-seam orientation.
Corey Kluber throws a Kluberball. If you call it a curveball, then we'd show a 4-seam orientation. We do in fact call it a curveball, but it actually is closer to a 2-seam orientation. Now you can see that.
Some pitchers throw 2-seam changeups, and other 4-seam changeups. Now we show it accurately. (Well, except for pitchers who throw BOTH, in which case, we choose the one that is most popular.)
(*) The actual that I am referring to, right now, is based on the longitude of the seam orientation. This works fine for most fastballs, curves, changeups, cutters. It does NOT work for sliders, which really needs the latitude as well. All in due time. Right now, our animation just lets us do one dimension, but we've got the second dimension in the pipeline. So someone like Stroman (not that there's anyone like Stroman!) will have his sinker with a pure 2-seam orientation, when it's really more of a 1 seam as he calls it.
Anyway, coupled with the pre-existing spin axis, what you see is the actual spin of the ball, both on the spin axis and the seam orientation.
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