Baseball Prospectus on Twitter: A New Study Shows Umpire Discrimination Against Non-White Players by @No_Little_Plans / Twitter
Robotic Umpires: Baseball's Future or Doom? – The University School News
Are You Interested In Becoming A High School Baseball Umpire? – OCBOA
Baseball Umpires Aren't Perfect, OK? : 13.7: Cosmos And Culture : NPR
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Umpire Angel Hernandez sues MLB over alleged racial discrimination, MLB
Baseball and race in Baltimore
BASEBALL; No Runs, No Hits, No Errors: Baseball Goes on Strike - The New York Times
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In Defense of Umpires: Why Complaints About MLB's 'Ump Show' Problem Miss the Mark, News, Scores, Highlights, Stats, and Rumors
Standout 2022, 2023 Players At The Minority Baseball Prospects All-American Games — College Baseball, MLB Draft, Prospects - Baseball America
Baseball, Bias and Decision-making - Knowledge at Wharton
High School Baseball Umpires Quiz 2022