Novak Djokovic had a scary match against Ukrainian Alexandr Dolgopolov but managed to win and set up a quarterfinal clash with David Ferrer. On his part, Ferrer defeated Frenchman Gilles Simonin a 95-minute match. In a duel between two big-serving players, USA’s John Isner edged out Canada's no.5 seed Milos Raonic and Great Britain’s Andy Murray completed his 500th victory on the ATP World Tour. In other men’s singles matches, Tomas Berdych came through as Frenchman Gael Monfils injured himself in an acrobatic tumble and retired; Japanese Kei Nishikori had