Andy Murrsy
Andy Murray continues his preparations for the US Open which begins at Flushing Meadows on 25 AugustGetty

Andy Murray is through to the third round at the 2015 Cincinnati Masters (Western and Southern Open) following a straight-sets victory over Mardy Fish. The new world number two, who beat rival Novak Djokovic for the first since 2013 to win the Rogers Cup in Montreal and also overtake Roger Federer in the ATP world rankings last week, needed one hour and 44 minutes to dispatch his American opponent 6-4, 7-6 at the Lindner Family Tennis Center in Mason, Ohio.

Having suffered from anxiety problems in the aftermath of a heart condition and only competed on the tour in a handful of events over recent years, former Wimbledon quarter-finalist Fish is due to retire following the culmination of his final US Open campaign in September.

After the match, Murray paid tribute to the 33-year-old on social media and wished him the best of luck for the future. "With @MardyFish after our match tonight/this morning!," he posted via his official Twitter account alongside a picture of the duo. "One of my trickiest opponents. Good person, fun guy who's been very unfortunate these last few years... All the best for the us open and your life after tennis!"

Murray will face Grigor Dimitrov in round three after the Bulgarian won two consecutive tiebreaks to see off the challenge of Vasek Pospisil 7-6, 7-6. Tomas Berdych is also through after emerging victorious from his match against Thomaz Bellucci, while Milos Raonic fell victim to Feliciano Lopez and Marin Cilic beat Joao Sousa. Bernard Tomic is out having lost 6-4, 6-1 to qualifier Alexandr Dolgopolov.

Twitter/@andy_murray