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What would be the home plate umpire's role with an automated strike zone? His ball/strike signals seem to be the easiest way to signal to fans at the stadium whether a pitch is a ball or strike, since the fans are looking at the home plate area. But if he did serve in only a ceremonial pitch-by-pitch role, would he remain crouched right behind the catcher? Perhaps sit on a stool a few feet in back of home and given let's say two flags, one white for signaling balls, one red for signaling strikes?