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THE BOOK--Playing The Percentages In Baseball

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Wednesday, December 15, 2010

Strike zone, based on fastball v off-speed

By Tangotiger, 05:51 PM

Great stuff:

While the off-speed zone is clearly larger than the fastball zone, it is also higher. This is important, as only 25% of pitches thrown in the legal zone arrive in the top third. So while off-speed pitches are gaining more favor in the top third of the zone, they lose favor in the bottom third (which sees over 50% more pitches). Moreover, off-speed pitches left high in the zone are far more likely to make contact or elicit a swing, and thus have no impact on real-world zone advantage.

(10) Comments • 2010/12/17 • SabermetricsBall_Tracking
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December 15, 2010
Strike zone, based on fastball v off-speed