MLB will test its robot umpire system at the next All-Star Game

While human umpires will still make the first call at the All-Star Game on July 15, Major League Baseball plans to let teams use a robot umpire to challenge rulings, ESPN reports. The automated ball-strike (ABS) system has been around for years in one form or another, but relying on a computer's judgement of a pitch has yet to become a permanent fixture of major league play.

MLB is essentially porting over the ABS challenge system used during spring training for the upcoming All-Star Game in Atlanta. Human umpires will call balls and strikes as they normally would, but teams will be given two opportunities to challenge the call, using ABS as backup. "Only a pitcher, catcher or hitter can ask for a challenge and it has to happen almost immediately after the pitch," ESPN writes."The player will tap his hat or ...