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Operator error? Here's what google AI says:
The rectangular graphic on TV broadcasts is a 2D approximation of the batter's unique strike zone, a 3D rectangular prism, created by a broadcast graphics operator. The width is fixed to the 17-inch width of home plate, while the height is adjusted for each batter based on their individual stance, typically from the midpoint between their shoulders and belt to the hollow of their knees. While this box helps viewers understand the strike zone, it's an imperfect tool because of camera angles, 2D projection of a 3D space, and potential human error by the operator.
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