Major League Baseball announced this week it will be extending video review into the last stubbornly human corner of the game: balls and strikes. Beginning next year, each team will be allowed two challenges of an umpire’s call at the plate,

In every NFL stadium, there are six ultra-high-definition cameras that, coupled with computer-vision software, can measure the distance between a football and a first-down line. And in every NFL football, there is a coin-sized chip that, coupled with radio ...