Former major league outfielder Eric Byrnes uses a computerized video system to call balls and strikes at an independent minor league baseball game between the San Rafael Pacifics and Vallejo Admirals Tuesday, July 28, 2015, in San Rafael, Calif. On Tuesday night, the computer system stood in for pitch calls in what is considered to be the first professional game without the umpire making those decisions. A full umpiring crew will be there for everything else. (AP Photo/Eric Risberg)
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