Djokovic extends win streak, Federer falls in Paris

Novak Djokovic kept his win streak alive at the Paris Masters on Thursday, but there was defeat for Roger Federer at the hands of big-serving American John Isner. Rafael Nadal and Andy Murray also reached the quarter-finals, but in contrasting styles. World number one and defending champion Djokovic went through to the last eight in the final tournament of the ATP's regular season with a 6-3, 7-5 victory over Gilles Simon that took his unbeaten run to 19 matches.