MLB umpires wear white wristbands against player abuse
Umpires Wear Wristbands to Protest 'Abusive Player Behavior' - The New York Times
MLB umpires wearing white wristbands in protest of 'escalating verbal attacks
Joe West wears armband to protest verbal attacks on umpires, stares down player when calling strikes outside strike zone
MLB umpires wear white wristbands against player abuse
Baseball umpires aren't blind. They just have trouble breathing, study of balls and strikes shows
MLB umpires wear white wristbands against player abuse
Animal rights activist tackled after bolting on court in ref jersey during Grizzlies-Timberwolves Game 4
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