For more than a century, baseball’s home plate umpires have called a ball or strike based on interpretation of a vague, loosely defined strike zone.

NEW YORK (AP) — Richie Garcia is worried about the impact that robot umpires will have on their human counterparts. Major League Baseball introduced the Automated Ball-Strike System for regular-season play this season starting with the New York Yankees' opener at San Francisco on Wednesday night,

One of the most recognizable Major League Baseball TV graphics will look different this season.

The robot umpires aren’t on the field. Instead, they are a “network of specialized cameras set up in every ballpark to track the baseball’s exact location,” said The New York Times. The system, officially called the (ABS) Challenge System,

SAN FRANCISCO (AP) — New York's José Caballero thought for sure the pitch from Logan Webb had missed the strike zone, so he challenged — making major league history in the process. Caballero lost the first challenge taken to Major League Baseball's so-called robot umpire,