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Rob Manfred tries to smooth out Red Sox' strike zone frustrations - The Boston Globe
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World Series: Nationals must accept controversial calls in Game 5
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Softball - Wikipedia
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Major League Baseball umpire selection process
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MLB umpires' union clarifies use of electronics at spring training sites - ESPN
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MLB Ejection 182 - Laz Diaz (1; Aaron Boone) - Close Call Sports/ Umpire Ejection Fantasy League - Umpire-Empire
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Pitch Framing Is Evolving Along With the Strike Zone
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MLB announces that Game 2 of the World Series was a perfect game
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Better Hate an Umpire: A Small Comprehensive Guide to 2023's Officiating Crews – Home of The Worst Fans in Baseball Podcast
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MLB umpires willing to let computers call balls and strikes: report
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Robot umpires already at Sugar Land Space Cowboys' ballpark could be soon heading to MLB parks - ABC13 Houston
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How well do umpires call balls and strikes? - Beyond the Box Score