London, June 27 British tennis star Andy Murray is using an improved serve to blast his way into the second week of Wimbledon.

The No.3 seed, who faces Serbia's Viktor Troicki in the third round on Centre Court today, has acquired quite a reputation for being a decent tactician and an extremely good returner of the serve.

Over the last six months, Murray's serve is giving his opponents major problems, particularly on grass.

During his match against Ernests Gulbis in the second round on Thursday, Murray lost just one point on his serve.

"I have become physically stronger, I'm now a lot more balanced throughout the whole serving motion. Before, my legs were stronger than my upper body and I would collapse a little bit. And when you do that you hit a lot of serves long and it's not as good. Now, I'm staying taller for longer and it's less effort to hit a hard serve than it used to be," The Sun quoted Murray, as saying.

"I have always practised my serve a lot. Maybe I spend a little bit more time on it than before but it's always been a very important part of my game. If you can take care of your own service game then it puts an awful lot of pressure on your opponent, and I have done that since I first came on the tour, I have tried to improve it," he added.

Murray should not have too many problems against 30th seed Troicki. (ANI)