What is the proposed ball-strike challenge system in MLB? - AS USA

Robo-umps have arrived — and they're not far from landing at

Robot umps, challenge system, or neither? WooSox players weigh in

Major League Baseball need automated ball and strike system, even

MLB Commissioner Rob Manfred praises computer challenge system

Triple-A parks to use new electronic strike zone

MLB testing new technology during games to help settle balls vs

Automated ball-strike (ABS) system, pitch timer, bigger bases

Developing MLB's Automated Ball/Strike System (ABS)

Automated Ball-Strike Challenge System in Action!

Jacksonville Jumbo Shrimp use Automatic Ball-Strike System

MLB's automated strike zone debuts in Triple A Pacific Coast

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