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Instant replay in Major League Baseball - Wikipedia
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Tim Timmons (umpire) - Wikipedia
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D. J. Reyburn - Wikipedia
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Bob Davidson (umpire) - Wikipedia
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Jim Joyce - Wikipedia
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Jim Reynolds - Wikipedia
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Ángel Hernández (umpire) - Wikipedia
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Wally Bell - Wikipedia
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Mike Winters - Wikiwand
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Adam Hamari - Wikipedia
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Who is the most famous umpire in MLB history? - Quora
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Doug Eddings - Wikipedia
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Brian Knight - Wikipedia
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Rob Drake - Wikipedia
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Jerry Meals - Wikipedia