French Open: Andy Murray aims to play dictator against David Ferrer

• Murray confident but has never beaten Spaniard on clay
• Warmer weather could help Murray in quarter-finalAndy Murray and Novak Djokovic have much in common from adjacent birthdays to a spirit-sapping defensive game. The most important similarity between them right now, however, is the lack of a French Open title and, after four of seven matches, it is the world No1 who looks more likely to leave Paris smiling on Sunday.Djokovic is approaching such a pitch of excellence that even those smi