Robot umpires' make independent league baseball debut

MLB 2020 Should Have Been the Season of the Robot Umpire

Robot umpires will continue to be used in Atlantic League for remainder of 2019 season

Robot umpires' debut in independent Atlantic League

Robot umpires' coming to minor league, but still a while away from majors

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Robot umpires' make independent league baseball debut

Major League Baseball considers dramatic change with robot umpires - CBS News

Robo-umps reach Triple-A, but MLB rollout still uncertain

Robot umpires make their professional baseball debut

Robot umpires are coming to Atlantic Baseball League