MLB
The Automated Ball-Strike Problem System lets gamers attraction umpire calls, aiming so as to add accuracy and technique to the sport.
The Boston Red Sox open their 2026 season Thursday in opposition to the Cincinnati Reds with a notable change to the sport: MLB’s new Automated Ball-Strike Challenge System.
The system, generally known as the ABS Problem System, permits gamers to problem an umpire’s ball-or-strike name in actual time, aiming to make sure accuracy and add a component of technique to the game.
Powered by T-Cell, the ABS Problem System tracks the exact location of every pitch relative to the batter’s individualized strike zone. When a problem is initiated, the result’s transmitted over a 5G community and displayed virtually immediately on stadium videoboards and broadcast feeds.
The know-how has been examined within the minor leagues since 2022 and was used throughout Main League spring coaching in 2025.
The Purple Sox received an early look this year throughout the Grapefruit League play: In a recreation in opposition to the Minnesota Twins in early February, cleanup man Willson Contreras challenged a strike-three name that was overturned to a ball within the first inning.
How the system works
Every crew begins a recreation with two challenges. If a problem is profitable — which means the unique name is overturned — the crew retains it. If the decision stands, the problem is misplaced.
Further challenges are awarded in additional innings.
Solely the batter, pitcher, or catcher can provoke a problem, they usually should accomplish that instantly by tapping their helmet or cap. Managers and different gamers aren’t permitted to help, and umpires can deny a problem in the event that they imagine outdoors enter influenced the choice.
Not each ballpark will function the system. Whereas the ABS Problem System might be accessible in all commonplace MLB stadiums, it won’t be used throughout sure particular occasions — together with the Mexico Metropolis Sequence, the Field of Dreams game, and the Little League Traditional — attributable to technical limitations.
Ballparks will show the variety of remaining challenges for every crew utilizing “ABS” indicators, and every assessment is designed to take solely seconds earlier than play resumes.
For broadcasters, MLB has issued new steering: Whereas networks should still show a strike zone graphic, they’re being requested to not visually distinguish between balls and strikes inside that field.
Past accuracy, the system introduces a strategic factor. As a result of challenges are restricted, gamers should resolve when it’s value risking one — weighing early-inning calls in opposition to probably extra consequential moments later within the recreation.
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