Nole clinches 80th win in 2015, sets Nadal semi-final clash!
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.
Novak downs Berdych, faces Federer for 50th career crown!
Novak will attempt to clinch his 50th tour-level title and his second of the year, when he takes on second seed Roger Federer on Saturday.
VIDEO: Novak vs. Berdych (Highlights)
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.