However , the usually accurate and decisive service which has led the World Number 3 to Master Series success , deprived him at crucial moments against Ferrer .
Murray 's vastly improved serve is recognised as one of the most useful on the circuit .
The usually accurate and decisive service which has led the World Number 3 to Master Series success , deprived Murray at crucial moments against Ferrer .
Murray 's vastly improved serve is recognised as one of the most useful on the circuit .