tennis

Professional tennis player Roger Federer won his 20th Grand Slam title recently. He’s…

Serena Williams, who plays tonight in the U.S. Open semifinal, might be the…

Damien Saunder, a cartographer at ESRI, likes to use mapping methods to evaluate…

Watch video clips from the judge’s point of view and try to make the call.

Hawk-Eye is a collection of technologies that allows high-granularity sports tracking, most notably…