A computerized system that calls balls and strikes is being tested during Major League Baseball spring training exhibition games after four years of experiments in the minor leagues.

Here's a first look at MLB's Automated Ball-Strike challenge system, a compromise between full robot umpires and human umpires, in action during spring training.

Major League Baseball this week will begin testing an automated system that will keep count of balls and strikes. The tests will take place during spring training and could be rolled into regular season play in 2026.