MLB, umpires agree on deal that would allow for computerized ball
Why does MLB need umpires for home plate when a computer could easily determine strikes/balls/ etc? - Quora
Robot Umpires: Coming Soon To A Major League Baseball Diamond Near You?
Robot umpires. Make it happen, MLB. Jays fans have seen enough of not seeing enough
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Report: Umpires agree to development of automated ball-strike system – The Morning Call
The computerized strike zone: Is baseball ready?