Roger Federer of Switzerland returns a shot
Roger Federer of Switzerland returns a shot to Gilles Simon of France during the men's singles final match at the Shanghai Masters tennis tournament in Shanghai October 12, 2014. Reuters

Is 2015 already the right time for Roger Federer to end his well-known career in sports? His comments in some interviews make people think that he will then retire soon.

It appears that the former world no.1 is giving signs that he must retire already because of the upsetting 2013 and slow first half to 2014. Although the Swiss Maestro managed to get back and showed that he can still play just the way he played when he was younger, he hints that a retirement will come soon.

Despite being a former world no. 1, Roger Federer missed the Grand Slam 18 last season. It's not that he wasn't good enough to make it, but Federer was rejected in the Wimbledon final and he surrendered in the US Open semi-finals to the winner Marin Cilic. But then again, the 17-time Grand Slam champion won many master championships, won a good tournament at the ATP Finals and gained a maiden Davis Cup trophy for Switzerland in 2014.

Last Christmas, he was interviewed by BBC Radio Four and he said: "I must say - and this is honest - I don't know if I would still be playing if they put me on Court 4 every day." "That would be difficult for me, having played on all these wonderful courts around the world and now playing in front of a fraction of those people - that would be rough."

Federer until now is a Centre Court attraction wherever he goes because of his great form, but it seems like this year's levels would be difficult for him. On the other hand, his rival Rafael Nadal has already recovered from his various injuries and believed to regain all his lost time in 2014. Apart from the current world no. 1, Novak Djokovic, Nadal is one of the great opponents of Federer. The world no.1 has his own league now, and we can see him at more finals this year.

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