RoboUmp Hits the Big Leagues episode artwork

EPISODE · Apr 14, 2026 · 31 MIN

RoboUmp Hits the Big Leagues

from 99% Invisible · host Chris Berube

One study from 2018 found that Major League Baseball umpires blow about 14 calls every game. That’s 34,000 bad calls every year. And it makes a difference. A blown strike call can decide a win or a loss, a championship or six months at home, wondering what could have been. And while umpires are about 97% accurate in calling balls and strikes, Major League Baseball has been considering something drastic. Something to take us up to 100% accuracy. They have a plan to replace human umpires with robots. Now, with an update! Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.  Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Episode metadata supplied by the publisher feed · Published Apr 14, 2026

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The surprisingly long history of trying to use robots to call balls and strikes in baseball. With an update!

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RoboUmp Hits the Big Leagues

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