Umpire Angel Hernandez alleges MLB manipulated reviews to make minorities look bad - The Athletic
Grading MLB umpires: Meet the humans behind the Twitter bots that track balls and strikes - The Athletic
Building a Robot Umpire with Deep Learning HD Video Analysis (Part Three)
Stat of the Week: Doug Eddings & Bill Miller Call A Lot Of Strikes - Sports Info Solutions
Observations of Umpires at Work – Society for American Baseball Research
Wilson's MLB Umpire Betting Guide (5/8): When To Trust a Getaway Game Under
They Call 'Em Like They See 'Em - Twinkie Town
MLB umpire in Cardinals vs. Mets hit flush in the face by errant throw
MLB's sticky stuff enforcement is flawed - Pinstripe Alley