My column this week on Baseball Prospectus included a return of the Fish/Eye chart I built to illustrate the continuum of plate discipline. I've added a new metric this time called Square which tracks the percentage of pitches in the strike zone swung at and made contact with. A high value here (relative to the average of over 87 percent) indicates that when the batter offers at a strike he usually makes contact. On the contrary, a lower value indicates hitters who, for reasons such as a long swing, are more apt to swing through strikes. In any case, I also relate this metrics to Wily Mo Pena and my discussion from a previous column.
Several readers have alerted me to the fact that the group charts I showed cut a few players off at the edges. New charts coming soon...
Update: I posted new charts and some additional information about performance by quadrant on BP's Unfiltered blog.
Dan, have you thought about looking into how far each hitter is into each quadrant. You can use a radial coordinate system, and use the length of the line to see if it correlates to performance in each quadrant.
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