Andy Murray downplays chances of overhauling Roger Federer and Novak Djokovic by end of year I mean, I haven't felt so different. I felt, yeah, a lot of relief. It was a big weight off my back at the time. So, you know, getting on the practice court, getting in the gym and stuff, has become a bit easier probably. Murray, whose highest ranking was number two, said the top spot was a reward for playing consistently good tennis throughout the whole season. You need to focus more on the process and not so much just 'number one, number one'. I need to concentrate on the tournaments and the events that I'm playing," said the Scot. I'll try to do as well as I can between now and the end of the year. If I do that, there's a possibility to get to number one next year. But it's so hard to do just now because of what the guys ahead of me are doing every single week. But to get to number one, you need to win Grand Slams. The Australian Open is obviously the next major focus for me. Murray opens his defence of his Shanghai Masters crown on Wednesday with a second-round match against Germany's Florian Mayer, with Federer and Djokovic as his main rivals in the eastern Chinese city. Serbia's Djokovic, who on Sunday won the China Open, reiterated on Tuesday his desire to return to the top of the rankings. Well, number one of the world is a goal for me till the end of the year, definitely an objective, something I try to achieve. But it's not daily on my mind. You know, I obviously try to focus on my day-to-day commitments that I have," added Djokovic, who will meet Bulgaria's Grigor Dimitrov in his opener. The top eight seeds have first-round byes.