MLB will be testing an automatic balls and strikes challenge system this spring training. Here's how it works.

ABS is MLB’s name for an automated strike zone — also known as robot umps. In a full ABS game, there will be a human umpire ...

The body is CNC-machined from a solid block of ABS material before sanding and polishing by hand. The cars are then finished with the highest-grade automotive paint, which includes a glossy UV ...