Sources: 10 MLB umps retiring, most since '99 : r/baseball
Joe West to retire as MLB umpire - The Washington Post
Record-breaking umpire Joe West to retire after postseason - ESPN
What do MLB umpires do in the off-season? - Quora
Joe West to retire as MLB umpire - The Washington Post
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Joe West calls a pitch straight down the middle a ball : r/baseball
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Record-breaking umpire Joe West to retire after postseason - ESPN