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.

Major League Baseball players like to believe that they could call a game better than the umpire standing behind home plate. Now they’re finally getting a chance to prove it.

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 ...

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 ...

PHOENIX — The robo ump could kill K-Zone. On Thursday, Major League Baseball will employ what it calls the automated ball-strike system, or ABS, in a big-league spring training game for the ...

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 ...

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.