Umpire, Baseball Wiki
Hey MLB, learn from the NFL's referee debacle before baseball loses its integrity – New York Daily News
Why is MLB still using 6 umpires in postseason games? - Bleed Cubbie Blue
Looking Official: The Umpire Uniform - Little League
Umpire (baseball) - Wikipedia
MLB 2020: Umpires Joe West, Gerry Davis differ on COVID-shortened season
MLB umpires would be better served to calm down
Tim Tichenor will be plate umpire for MLB's All-Star Game at Seattle on July 11
Umpire (baseball) - Wikipedia
MLB umpires have a new signal to call this spring - Sports Illustrated
Confident umpires can improve baseball's pace issues
MLB Umpire Bios
MLB Umpire Microphones in Action as 2022 Season Nears - Crew Chief Ted Barrett's PA Announcements
Ten MLB Umpires Set To Retire Ahead Of The 2023 Season
A New Study Shows Umpire Discrimination Against Non-White Players - Baseball ProspectusBaseball Prospectus