Micah Daley-Harris finds that the arc angle of a batted ball is the best way to classify it as a line drive or fly ball.
Across all cut points we see a significant discrepancy between BIS’s batting averages and those found using arc angle. This now makes it abundantly clear that no matter who’s scoring or stringing, the task of classifying batted balls is simply too difficult for the naked eye alone, and it’s time we moved to using arc angle instead.
The whole point of batted-ball statistics is to get less noisy numbers that are still meaningful. So now that we have an objective measure of batted-ball type, let’s look at how it predicts batting average.
It turns out to be a very good predictor. There are lots of graphs and videos at the link, and the research is well worth your read.
from baseballmusings.com http://ift.tt/2mjE4lL
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