My eye over yours': Ball-and-strike challenges, possibly coming to an MLB game near you - The Athletic
What is a strike in baseball? Robots, rule book and umpires view it differently
Manfred praises challenge system over fully automated strike zone
Column: Improving ball-strike calls is a challenge MLB needs to take on, Professional: All Sports
The automated strike zone is moving on up to Triple-A in 2022 - Bleed Cubbie Blue
Sources - All AAA parks to use electronic strike zone in '23 - ESPN
Letdown: Twins 3, Phillies 0 - The Good Phight
Explaining ball-strike challenge system
MLB is using an automated ball-strike challenge system in their Arizona Fall League #shorts
Robot Umpires?! No Automated Ball-Strike Challenge System for MLB in 2024 - sportstalkphilly - News, rumors, game coverage of the Philadelphia Eagles, Philadelphia Phillies, Philadelphia Flyers, and Philadelphia 76ers
What is the proposed ball-strike challenge system in MLB? - AS USA
Triple-A parks to use new electronic strike zone
Baseball's new electronic strike zone debuts in Worcester
SQUAWK BOX
Automated ball-strike (ABS) system, pitch timer, bigger bases tested at Triple-A