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Baseball Is Back, but How Does an Umpire Social Distance at Home Plate? | Vanity Fair
NFL warns not to approach referees without masks on
You're Out! No Fans — Or Spitting — As Baseball Returns To South Korea : NPR
The Secret Lives of 8 Baseball Umpires | Mental Floss
MLB: Pirates manager, ump calmly put on masks before arguing ejection
Baseball Is Back, but How Does an Umpire Social Distance at Home Plate? | Vanity Fair
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Korean Baseball Organization sends message to umpires
Rays workout more interesting with Joe West behind the plate
Professional Woman Umpires – Society for American Baseball Research