World Number One Novak Djokovic has moved into the last eight of the ATP Dubai Open Tennis Championships . In a one sided match on Wednesday, the Serb defending champion outclassed Ukrainian S Starkovsky 7-6, 6-3.Djokovic takes on fellow serbian Janko Tipsarevic in the Quarter finals. Earlier, Fourth seed Andy Murray became the first player to reach the quarter-finals. Murray overpowered Marco Chiudinelli 6-3, 6-4 in straight sets.