Tapping, twirling and “T” signs: Sports replays have a language all their own

Every moment of any major sporting event can be dissected in high-definition these days, meaning officials and umpires ...

Through MLB’s first weekend, Salvador Perez and the Royals are ABS winners

Salvador Perez and the Kansas City Royals have been baseball’s best at utilizing their robot challenges through the first ...

Inside MLB’s new ABS challenge system: Which umpires, teams and players thrived and struggled

In just one weekend with ABS, several games have been flipped on their heads as a result of a literal tap on the head.

So far, MLB’s highly-riveting ABS is proving to be a good call

Over time, some fans likely will call for “full ABS,” in which the robots make every ball-strike call and the plate umpire is rendered obsolete. Bad idea. The human element is part of what makes the ...