Andy Murray says he will definitely be fit to defend his Cincinnati Masters title this week.

Having risen to No2 in the world rankings, the Briton rounded off a fantastic week by beating Juan Martin del Potro 6-7, 7-6, 6-1 in the final of the Montreal Masters.

There was some concern that Murray (right) would not be able to take part this week after he was seen clutching his hip during the presentation ceremony.

However, the 22-year-old said: “I'm just a little bit stiff but I plan on going to Cincinnati to try to defend my title.

“It was a pretty intense match and first tournament on hard courts for so long. The hard courts are the most brutal on your body.”

Last year's triumph in Cincinnati set Murray up perfectly for the US Open at Flushing Meadows, where he finished as runner-up.

Murray fancies his chances of going one better than last year but insists defending his Masters title is foremost in his mind at the moment.

“I feel I've got a good chance of doing well at the US Open, but I won't get too far ahead of myself,” he said.