WTFACTS Major League Baseball: Umpires are required to wear black underwear

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MLB Umpires Must Wear Black Underwear, In Case They Split Their Pants. - South Florida Reporter

MLB umpires have an underwear requirement?! 😳😂⚾️ #mlb #baseball #mlb

What is the difference between umpires who wear black and white stripes and those who wear blue in Major League Baseball (MLB)? - Quora

MLB umpires have an underwear requirement?! 😳😂⚾️ #mlb #baseball #mlb

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Look Like a Pro Inland Baseball Umpires Association

Major League Baseball umpires are required to wear black underwear while on the job in case they split their pants. #ATTwitter #AT4all