MLB's New Crew Chiefs for 2023 - 7 Umpires Promoted to Leadership

Robo umps reach Triple-A, but MLB rollout still uncertain

Adrian Johnson, Alan Porter named crew chiefs

1999-2023 MLB Umpire Rosters, Post Season and All Star Game Crews

MLB umpiring promotions for 2023

Umpire Angel Hernandez loses again in lawsuit vs MLB when appeals court refuses to reinstate case

Ten MLB umpires are 'set to retire at the end of the month' - the LARGEST turnover since 1999

MLB umpire not victim of discrimination by Joe Torre: judge

Umpire Angel Hernandez sues MLB over alleged racial discrimination, MLB

1999-2023 MLB Umpire Rosters, Post Season and All Star Game Crews

Umpire (baseball) - Wikipedia

You can't take the 'Cowboy' out of Joe West, who will umpire 5,000th game - Los Angeles Times

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