SportNovak Djokovic fears Andy Roddick's powerFirst Serb: Djokovic's fears may not matter, as his qualification could be decided by Rafa Nadal's match with Tomas BerdychHenry Swarbrick13 April 2012Novak Djokovic is wary of Andy Roddick's huge serve as he prepares to face the American at the Barclays ATP World Tour Finals tomorrow night.The world No3's 7-5, 6-2 loss to Rafael Nadal last night means his chances of qualifying for the semi‑finals are reliant on the Spaniard's match with Tomas Berdych earlier the same day.But the Serb is focused on his own affairs and is aware that although Roddick is out of the tournament he still poses a serious threat. "He's a huge server; it's always tough to play him. He played great against Nadal," he said."You know the group is still open, both matches will decide who's going to go through."Andy Murray is due to face David Ferrer in a crucial group match tonight after Roger Federer's clash with Robin Soderling.MORE ABOUTRafael NadalSerbiaSpainTennis
