MLB Automated Ball-Strike System Debuts with 61% Success Rate

Managers and players adjust to new technology as baseball enters a new era of automated umpiring.

Mar. 28, 2026 at 10:56am

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A fractured, cubist-style painting depicting a baseball game in progress, with the players, field, and umpire broken down into sharp, overlapping geometric shapes and planes, capturing the dynamic motion and tension of the sport.The debut of automated umpiring in Major League Baseball introduces a new era of technological disruption to the national pastime.Boston Today

In the opening games of the 2026 MLB season, the new Automated Ball-Strike System saw a 61% success rate in correctly calling balls and strikes. Longtime Cincinnati Reds manager Terry Francona acknowledged that pitchers and teams will need to adapt to the new technology, which can sometimes overturn what players and coaches think are clear outs or walks.

Why it matters

The Automated Ball-Strike System represents a major shift in how baseball is officiated, with the goal of increasing accuracy and consistency. However, the early results show there is still work to be done to perfect the system, which is causing adjustments for managers, players, and fans alike as the sport enters a new technological era.

The details

In the Reds' 3-0 loss to the Boston Red Sox on Opening Day, the Automated Ball-Strike System overturned a full-count walk by Reds player Eugenio Suarez, changing it to a strikeout. Reds manager Terry Francona noted that pitchers and teams will have to get used to the idea that an inning might not be over when they think it is due to the new technology.

  • The Automated Ball-Strike System debuted on Opening Day of the 2026 MLB season (March 28, 2026).
  • In the Reds' game against the Red Sox on March 28, 2026, the new system had a 61% success rate in correctly calling balls and strikes.

The players

Terry Francona

The longtime manager of the Cincinnati Reds.

Eugenio Suarez

A player for the Cincinnati Reds.

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What they’re saying

“I think our pitchers are going to have to get used to thinking the inning might be over, and it's not.”

— Terry Francona, Cincinnati Reds Manager

What’s next

MLB officials have said they will continue to monitor the performance of the Automated Ball-Strike System and make adjustments as needed throughout the season.

The takeaway

The debut of the Automated Ball-Strike System in MLB represents a significant technological shift that will require players, managers, and fans to adapt. While the system aims to improve accuracy, the early results show there is still work to be done to perfect the technology and integrate it seamlessly into the game.