Magnus Carlsen, 22 year old Norwegian, highest rated chess player in history versus Vishy Anand, 43 year old Indian, World Chess Champion since 2005.
This is game 6 of their 12 game match, and Magnus just won the last two games. The score is 3.5 to 1.5 for Carlsen. Anand will have to pull off a miracle to climb back from this so expect fireworks.
Go here to watch it live starting in 30 minutes
Go here to watch video analysis of their last game