MLB to Implement Automated Ball/Strike Challenge System in 2026 Season
Major League Baseball will implement an Automated Ball/Strike (ABS) challenge system in 2026, allowing teams to appeal umpire calls. This follows extensive minor league testing and aims to reduce disputes.

MLB will allow players to challenge balls and strikes starting in 2026

MLB will use robot umpires for ball-strike appeals in 2026
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Overview
Major League Baseball will introduce an Automated Ball/Strike (ABS) challenge system for the 2026 season, allowing teams to appeal ball and strike calls made by human umpires.
Teams will receive two challenges per game, retaining successful appeals, with an additional challenge granted in extra innings, aiming to reduce disputes over calls.
The ABS system, utilizing Hawk-Eye cameras, has undergone extensive testing in minor leagues since 2019, including Triple-A and spring training, to refine its accuracy and implementation.
While human umpires will continue to call balls and strikes, the challenge system incorporates ABS technology, allowing for reviews displayed as digital graphics on outfield videoboards.
The decision to implement a challenge format, rather than full automation, was influenced by player feedback and preserves the skill of pitch framing by catchers.
Analysis
Center-leaning sources cover this story neutrally, focusing on factual reporting of MLB's new challenge system for balls and strikes. They explain the system's mechanics, its development through minor league testing, and include perspectives from various stakeholders like the commissioner, a player, and an owner. The coverage avoids loaded language and provides context on the decision-making process, including acknowledging alternative preferences.