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KC@LAD: Umpire Danley leaves after foul tip hits mask - YouTube
Dale Scott, first openly gay MLB umpire, retires - Outsports
Baseball Is Back, but How Does an Umpire Social Distance at Home Plate? | Vanity Fair
January 26, 1919: The Flu Mask Baseball Game – Society for American Baseball Research
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MLB Umpire Head Injury: Mask vs. Helmet Debate and the Value of Tradition | Bleacher Report | Latest News, Videos and Highlights
NFL warns not to approach referees without masks on
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MLB: Pirates manager, ump calmly put on masks before arguing ejection
How to handicap MLB umpire betting stats
Korean Baseball Organization sends message to umpires
14-year-old umpire in Lakewood youth baseball brawl gets new gear
MLB umpire Eric Cooper, 52, dies from blood clot following knee surgery | Daily Mail Online
Preventing Umpire Interference - Referee.com
January 26, 1919: The Flu Mask Baseball Game – Society for American Baseball Research
The Secret Lives of 8 Baseball Umpires | Mental Floss
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Coronavirus: Inside MLB's long history of dealing with illness - Sports Illustrated
Baseball back in South Korea but no spitting or high 5s