How MLB created a so-called robo-ump system that uses cameras and computers to call balls and strikes and how players are reacting at spring training.

Tampa Bay Rays catcher Ben Rortvedt tried to pull a fast one on MLB's new Automated Ball-Strike (ABS) challenge system on Friday afternoon. In the bottom of the third inning of a matchup against the New York Yankees,

MLB is weighing options to dramatically reduce or remove the ubiquitous broadcast strike-zone box as part of bringing the robo ump online.