Should MLB umpires really be wearing advertisements?
Explaining the FTX Patch worn by MLB Umpires – SportsLogos.Net News
Don Denkinger, 86, Top Umpire Remembered for Botched Call, Dies
Codify] MLB umpires missed over 21,000 balls & strikes calls
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MLB players wearing masks on the field – and some may in games
On Rain Delays: An Interview With Former MLB Umpire Dale Scott
MLB umpires wear wristbands to protest 'abusive' treatment
Alan Porter, Adrian Johnson become 2nd, 3rd Black umpire crew chiefs
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Some Thoughts on the 2021 MLB All-Star Game