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We use relative height and movement profiles to estimate the arm slots of big league pitchers. From there, we interpret how relative arm slot influences spin rate and spin efficency readings Works Cited: An Attempt to Quantify Pitch Deception (Sarris, 2016) Forecasting Platoon Splits (Cross, 2015) Delivery Angle Determines Pitch Movement (Brooks, Fleisig, Pavlidis, 2015) All Data Courtesy of Baseball Savant
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