Robot umpires approved for MLB in 2026 as part of challenge system

Major League Baseball’s 11-man competition committee has approved use of the Automated Ball/Strike System in the major leagues in 2026. Human umpires will still call balls and strikes, but teams can challenge two calls per game. Challenges must be made by a pitcher, catcher or batter. A team retains its challenge if successful. Reviews will be shown as digital graphics on outfield videoboards. Adding robot umps could reduce ejections, as most are related to balls and strikes. The Automated Ball/Strike System has been tested in the minor leagues since 2019. The challenge system allows for ABS without eliminating pitch framing, a skill for catchers. This is MLB's first major rule change since 2024.

AP News
The crazy part is that we have a system to call the pitches perfectly, they admit that umps are wrong 6% of the time, and they are still doing this halfway nonsense instead of just calling the pitches correctly instead of letting umps continue to be wrong
I think the players like the fact that some umps have slightly different zones. As long as the zones are consistent, it can give observant players an edge.
Nothing in the rules of baseball says umps are allowed to make their own zones. They are instead saying they want to play a different made up game
The game as it’s been played for 120+ years, though.

Well no. The rule itself has changed several times over the years. It now reads:

The official strike zone is the area over home plate from the midpoint between a batter’s shoulders and the top of the uniform pants – when the batter is in his stance and prepared to swing at a pitched ball – and a point just below the kneecap.

www.mlb.com/glossary/rules/strike-zone

Which, when you think about it, isn’t really all that precise. Where exactly are the shoulders in a stance? How is a “kneecap” measured? What if the batter hops around a bit when he swings? I hate to break it to you, but the robo-ump is probably guessing too, at least on the high and low calls.

And it’s not so much that they call the rule differently, but they are human and see the strike zone differently.