99% Invisible artwork

Apr 14, 2026 · 31m, Episode 663

RoboUmp Hits the Big Leagues

From 99% Invisible

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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 ep...

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