MLB umpires show discrimination against non-white players, according to new study
Major League Baseball umpire loses appeal of discrimination lawsuit
MLB fans distressed with umpire performance early on this year: Home plate umpires just love to f**k us with terrible calls
Angel Hernandez Claims MLB Manipulated Reviews to Disadvantage Minority Umpires - Sports Illustrated
How MLB Umpires Learned to Explain Replays to Crowds - The New York Times
MLB's Most Scrutinized Umpire Angel Hernandez Argues MLB 'Manipulated' Reviews Against Minorities – OutKick
Contract Now Please!”: Young Kid's Impeccable Umpire Impression Leaves MLB Fans Dumbfounded - EssentiallySports
Angel Hernandez had a horrific night before Kyle Schwarber's outburst
Southland Conference umpire suspended indefinitely for retaliating against player with outrageously bad call