Unlike with human umpires, who studies have shown adjust the strike-zone parameters based on the count, ABS maintains a rigid definition of the strike zone based on each batter's height.

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 ...

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.

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 ...

Veteran MLB umpire Mike Muchlinski went viral on social media for his sense of humor after he got one of his strike zone calls challenged. Muchlinski was the home plate umpire for Tuesday’s ...

The Automated Ball-Strike System allows the players closest to the strike zone — the pitcher, catcher and batter — to dispute a call by the home plate umpire. A simple tap of their helmet or ...

Based on the visible loadout, the pilot’s mission was to carry out a ground strike against a pre-planned target and avoid engagements with Russian aircraft, at least until delivering its air-to-ground ...