This aspect of it, on the other hand, sounds seriously cool:
data is pulled directly from IBM tracking technology used to collect data on live Grand Slam tennis matches. This data is applied in near real-time to a virtual tennis ball and two participating avatars in a 3D reconstruction of the Melbourne Tennis Centre. Those watching the match are able to view the proceedings from the bleachers and also from the eyes of the players.
I also like Tony Walsh's description of this situation as "Mixed Reality".