But last week’s developments — Major League Baseball’s test of the automated strike zone, and the possibility of this rule change taking effect in regular season games as early as 2026 or ...

Posted on a bulletin board in the Nationals’ clubhouse in West Palm Beach: WiFi passwords, hitting groups and a new chart that breaks down swing decisions in spring training games.

One of the biggest adjustments is that the zone called by umpires isn't a rectangle and tends to bulge in the middle. MLB research also found that the human strike zone tightens from 550 square ...

Players can call for a challenge by tapping their helmet or hat, at which point the scoreboard shows whether the pitch was in or out of the strike zone as determined by the Hawk-Eye tracking system.

The system is capable of pinpointing where the ball was in relation to the strike zone as it crosses the plate. It is similar to the line-calling system used in tennis. The minor leagues have been ...