For generations, baseball has followed a simple rule. The umpire calls balls and strikes, and that call stands. That changes now. This season, Major League Baseball is introducing something that once ...

Here's what to know about MLB's robot umps. How does the Automated Ball-Strike System work? Stadiums are outfitted with cameras that track each pitch and judge whether it crossed home plate within the ...

The New York Yankees' José Caballero lost the first challenge taken to Major League Baseball's so-called robot umpire, unsuccessfully appealing a strike by San Francisco Giants right-hander Logan Webb ...