Robot umps and dogs, minor league ball back after lost year
Pirates' Derek Shelton has MLB's first socially distanced umpire argument
Umpires roll with the punches of officiating during COVID, Coronavirus
Can the manner in which a catcher frames the ball actually influence whether a baseball umpire calls that pitch a ball or a strike? - Quora
Do safety protocols not pertain to travel teams? - Oak Park
Pirates manager Derek Shelton engages in masked, socially distanced argument with home plate umpire
Baseball Is Back, but How Does an Umpire Social Distance at Home Plate?
Why Phillies' Joe Girardi believes moving plate umpire behind pitcher is better than robo umps
MLB umpire Paul Emmel doesn't need surgery to be bigger man
After a long break, baseball is back
Mets Get Controversial Win on Walk-Off Hit-by-Pitch - The New York Times