Robot Umpires Are Here: ABS and the Mistakes It May Create | Mistake of the Week

Baseball has always made room for human error. Umpires miss calls. Fans complain. Life goes on.

But this season, MLB is rolling out the Automated Ball-Strike challenge system -- ABS -- giving teams two challenges per game to contest ball-and-strike calls.

The idea is to reduce bad calls. The likely side effect is a whole new category of mistakes.

In this "Mistake of the Week," Mark Graban looks at what happens when correcting human error depends on another human decision -- and what one anonymous coach predicted, vividly, about how this will play out.