November 17, 2007
Visual Aid
Josh Kalk introduced his first version of a web based tool for viewing PITCHf/x data. Right now, it allows you to see in two dimensions where a pitch passed the batter. For example, here's Alex Rodriguez. Compare him to Alfonso Soriano. Soriano swings at a lot more pitches out of the strike zone. However, when Alex swings out of the zone, it's usually a swing and a miss, while Soriano often makes contact. Alex appears to look for a ball in the strike zone, and when he's fooled the result is a swinging strike. Soriano appears to do a better job of putting the bat on the ball, although the result is often a foul tip on what should be a ball. I hope Josh's next enhancement is a way to view a particular result. I'd like to explore, for example, what batters get the most called strikes outside the zone. Does lack of selectivity really expand the strike zone from the umpires view?
Posted by David Pinto at
11:22 AM
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