The ABS challenge system leaderboard ranks batters, pitchers, catchers, teams and umpires throughout the MLB season.

How have the Houston Astros been handling the new ABS Challenge System this season?

CLEVELAND, Ohio — The automated ball-strike challenge system (ABS) was supposed to be a tool, a weapon even, that teams could ...

From the moment MLB began testing an automated strike zone in the minor leagues, its eventual arrival to regular season MLB ...

Similar to regular instant replay, the goal of the ABS challenge system is to correct the most egregious missed calls, though we will inevitably see some ticky-tack replays as well. More than a few ...

Major League Baseball changed forever last week with the opening act of the Automated-Ball Strike challenge system. Now, for ...

MLB has put in place a lot of rule changes over the last six years. There’s the automatic runner in extra innings, but only a small percentage of games go into extra innings. The pitch clock changed ...

Saw a hitter, catcher, or pitcher tap their helmet after a pitch and wondered what just happened. Here’s a clear guide to MLB ...

Stephen Vogt sees Cleveland's 2-for-12 challenge record as a teaching moment, telling his players to keep using MLB's new ...

The Miami Marlins have not hesitated with the ABS Challenge System, but how successful have they been?

MLB implemented its first-ever ball-strike challenge system this season, and the early reviews are positive — if not, in some ...

The high-speed-camera technology that lets players challenge pitch calls makes its full-time major-league debut this season.