Should MLB umpires really be wearing advertisements?

Fact Check: Is Rob Manfred bringing robot umpires to MLB in 2024? Commissioner's latest comments examined

Some Thoughts on the 2021 MLB All-Star Game

Barksdale, Hoye, Iassogna and Porter will be the umpire crew chiefs for Wild Card Series

Minor League Umpires To Receive Significant Pay Raise In 2022 — College Baseball, MLB Draft, Prospects - Baseball America

Major league umpires wear wristbands to protest 'escalating verbal attacks' from players

MLB umpire shares his opinion of new rules: Ken Rosenthal's conversation with Dan Bellino - The Athletic

Twins making careful decision about ad patches on players' jerseys

What does an MLB home plate umpire wear for protection? - Quora

Gibson makes final call: MLB umpire retires after 24-year career, Sports