POV: Bad Umpiring Hurt Baseball in 2021, Especially in the Playoffs. It's Time for Change, BU Today
Do AL and NL MLB umpires wear a patch on their hats for their league? - Quora
America's pastime has a new ritual: Frisking pitchers for sticky stuff
Little born to be major-league umpire
American League Umpire
Jamie Samuelsen: Bad umps like Hernandez should be held more accountable
MLB umpires would be better served to calm down
Umpire Angel Hernandez loses again in lawsuit vs MLB when appeals court refuses to reinstate case
Fay Vincent has some good ideas on improving umpiring - NBC Sports
MLB Chronicles: The umpires are losing their minds - McCovey Chronicles