Andy Murray believes that his next opponent at the ATP World Tour Finals, Kei Nishikori, is enjoying some of the best form of his career. Murray was speaking after opening his bid for glory at the O2 Arena in London with a 6-3 6-2 victory over Marin Cilic, with the world number one impressing after making a slow start – losing his serve in the third game of the first set.
Nishikori earns Murray praise
