NEW YORK -- Major League Baseball teams won 52.2% of their ball/strike challenges during the spring training test of robot umpires, and catchers had a markedly better success rate than pitchers.

The move paves the way for one of the most radical changes in major-league history: so-called robot umps making ball-strike calls in real games. MLB is currently testing a challenge system instead ...

While the use of the ABS challenge system during spring training seemed to go smoothly, it does not have a unanimously positive rating among MLB players. One anonymous player told The Athletic's ...