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How the MLB's new pitch clock could change baseball this season : NPR
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Why is MLB still using 6 umpires in postseason games? - Bleed Cubbie Blue
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Angel Hernandez now interim umpire crew chief after opt outs
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2023 MLB Umpire Crew List & Call-Up Umpires - Opening Day Update
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Beyond the grunt: Umpires mic up, and baseball changes a bit
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World Series umpire, Santa Cruz native Bill Miller talks all things baseball in crazy COVID-19 season – Santa Cruz Sentinel
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Major League Baseball umpire loses appeal of discrimination lawsuit
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POV: Bad Umpiring Hurt Baseball in 2021, Especially in the Playoffs. It's Time for Change, BU Today
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MLB Crew Chiefs to Wear PA Microphones, Starting in 2022
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Umpire Larry Vanover released from hospital two days after being hit in head by relay throw
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Umpire, Baseball Wiki
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MLB umpires will have a new view this season — on Zoom
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MLB playoffs: Umpires for 2023 ALDS, NLDS series