Defending champion advanced into the Barclays ATP World Tour Finals last four with a 6-3, 7-5 victory over Tomas Berdych in his final Sam Smith Group round robin match at the O2 arena on Thursday.
Serbian third seed Nole Djokovic showed his desire to regain the ATP World Tour Finals crown as he started his campaign with a 6-3, 6-3 win over the Czech Republic's Tomas Berdych on Monday.
