In Tennis, India's Leander Paes and his Czech team-mate Radek Stepanek will play their Men's Doubles second Group-B match of the ATP World Tour Finals at London, England today. The seventh seeded Indo-Czech pair will clash with the sixth seeded Spanish duo of David Marrero and Fernando Verdasco. Paes and Stepanek, who are currently second in 4-pair Group-B, behind Marrero and Verdasco, yesterday defeated the Austrian-Brazilian combination of Alexander Peya and Bruno Soares, 6-3, 5-7, 10-8.In the Singles, World Number One Rafael Nadal of Spain will take on Swiss Stanislas Wawrinka in Group-A, while third seed David Ferrer will meet Czech Tomas Berdych in Group-B.In yesterday's results, World Number Two Novak Djokovic beat Swiss Roger Federer, 6-4, 6-7, 6-2 in Group-B, and Nadal got the better off compatriot Ferrer, 6-3, 6-2.This tournament features a round-robin format, with 8 players in the Singles and 8 pairs in the Doubles, divided into two groups. The top two from each group will advance to the play-offs.