Four umpires promoted to Major League crews
MLB announces World Series umpire crew, Sports
MLB names first Black and Latino born umpire crew chiefs – Pro Player Insiders
Nail the Postseason Transition to a Larger Crew
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Play Ball! UConn Magazine
MLB makes history by naming its first black and Latino-born umpire crew chiefs
MLB Twitter reacts to mass retirement of major league umpires: Don't let the door hit you on the way out, Wish Angel Hernandez was on this list
MLB promotes 4 umpires to replace retiring Jim Joyce, John Hirschbeck, Tim Welke, Bob Davidson - ESPN
How Many Umpires Are There in Baseball? - Ump Junk - Officials Gear
Controversial umpire Angel Hernandez loses Major League Baseball lawsuit appeal
