Can a call of foul ball made by the home plate umpire be changed if the base umpire declares catcher's interference?
PLAYING IT SAFE: Umpires face unique challenges during pandemic
Robot umpires: MLB is testing technology in Atlantic League - The Washington Post
MLB Umpires Association, adamant that crews are simply upholding rule, address home-plate collision rule in statement - ESPN
How Rule Changes Could Save Major League Baseball's TV Future
Home plate umpires are getting better. Will that hold off the robots?
MLB umpire Paul Emmel doesn't need surgery to be bigger man
Bill Kemp: Social distancing during a baseball brawl
Are MLB catchers more likely to test positive for COVID-19?
Umpires roll with the punches of officiating during COVID, Coronavirus
Robot umps and dogs, minor league ball back after lost year