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Automated Ball-Strike Challenge System
References
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Automated Ball-Strike Challenge System

baseball
Also known as: ABS
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The Information Architects of Encyclopaedia Britannica

Learn about this topic in these articles:

  • An umpire stands in front of the scoreboard at Camelback Ranch, which displays an ABS Challenge System review showing a pitch called a ball during a Dodgers and White Sox game.
    What Is Baseball’s Automated Ball-Strike Challenge System (ABS)?

    The Automated Ball-Strike Challenge System (ABS) is an instant-replay mechanism that Major League Baseball (MLB) began using in the 2026 season and that allows players to challenge ball and strike calls made by home-plate umpires. Hawk-Eye cameras on the field track the baseball as it crosses…

    Read More

    The Automated Ball-Strike Challenge System (ABS) is an instant-replay mechanism that Major League Baseball (MLB) began using in the 2026 season and that allows players to challenge ball and strike calls made by home-plate umpires. Hawk-Eye cameras on the field track the baseball as it crosses…

    Read More