Technology Rumors

Weighing less than an ounce, these devices are worn underneath a player’s jersey. They track basic movement data, including distance traveled and running speed, but the real value comes from the health- and fatigue-related information they spit out. The monitors track the power behind a player’s accelerations and decelerations (i.e., cuts), the force-based impact of jumping and landing, and other data points. Team sports science experts scour the data for any indication a player might be on the verge of injury — or already suffering from one that hasn’t manifested itself in any obvious way.