Tennis fans watching the Australian Open on YouTube ended up getting an unexpected surprise, which left some with questions and many impressed. In several matches in the tournament, animated avatars ...

When 19-year-old Learner Tien broke No. 5 seed Daniil Medvedev’s serve late in the fifth set of their second-round nailbiter, tennis fans were on the edge of their seats. But on some screens, there ...

Tennis fans worldwide can stream Australian Open matches online, with a catch: The players on screen aren't real human beings, but video game-like avatars on a computer-generated court. The tournament ...