10 Worst Umpires in Major League Baseball

How MLB umpire grades really work, and what it means for the future of balls and strikes - ESPN

2021 MLB Umpire Power Rankings: First Third of the Season - Diamond Digest

This is the worst blown call in the history of baseball

Mets' Drew Smith suspended 10 games for banned sticky stuff at Subway Series - The San Diego Union-Tribune

Major League Baseball Umpire Loses Appeal of Discrimination Lawsuit

Umpire Angel Hernandez loses again in lawsuit vs MLB when appeals court refuses to reinstate case - The San Diego Union-Tribune

MLB's Worst Umpire Had a Dreadful Performance in Return to Job - Sports Illustrated

The first openly gay Major League Baseball umpire reflects on coming out, Coors Field and the 'robo-umpire

Angel Hernandez proves he is MLB's worst umpire after embarrassing Phillies, Brewers performance

Joe West to retire as MLB umpire - The Washington Post

Chart: Which MLB umpires performed the worst in replay reviews? – The Denver Post