Robot umpires: New baseball innovation points towards society's demise - Sports Illustrated
They're testing a ball/strike challenge system in the minor leagues - Bleed Cubbie Blue
Baseball's experimental rules won't apply to Iowa Cubs home games
Robo-ump challenge system, shift ban among experimental rules MLB to use in minors
MLB umpires are good at calling balls and strikes, but they need help - The Washington Post
Instant replay in Major League Baseball - Wikipedia
Automated Ball-Strike Challenge System in Action!
Robot umpires to be used in all 30 triple-A ballparks this season
MLB's Rob Manfred says automated strike zone is coming to league
Robot umpires and a ball/strike challenge system are coming to Triple-A in 2023 - Bleed Cubbie Blue
Humans are out! Hawk-eye robo ump, a new strike-calling system, will debut this week at Harbor Park. – The Virginian-Pilot
Korean baseball league introduces automated ball-strike system for 2024 as MLB mulls future with robot umps