Rafael Nadal says he is injury-free and focused ahead of quarter-final

• Nine-times French Open champion in imperious form so far at Roland Garros• 'Maybe I'll lose easy, maybe I'll win easy,' says opponent PabloCarreño Busta Rafael Nadal is looking every inch the champion he was here five years ago and it is clearly going to take someone playing special tennis to stop the Spaniard winning his 10th title at Roland Garros. With all the generosity one could muster, that person is unlikely to be PabloCarreño Busta, his Spanish friend, who took 4hr17min to defeat...