Rafael Nadal has conceded that his best days are behind him, but that doesn't mean he has any intention of hanging up his racquet just yet.
The 29-year-old has endured a frustrating few years blighted by injuries, and he has struggled to rediscover the form that saw him win 14 grand slams and enjoy a spell as the world's top ranked player.
Nadal dropped to tenth in the world rankings in June, before recovering to ninth after winning the Hamburg Open. And, having failed to reach the semi-finals of any of the year's first three grand slams, the 2015 season currently stands as one of his least successful in some time.
However, speaking ahead of this week's Montreal Masters, Nadal insists that retirement is not on the cards.
“For sure, there is more behind than in front in my career. I’m sure of that,” he said. “But I don’t think about retirement.
"Day by day is my way to work. In 2005, I was aged 19 and I’m sure that I won’t be playing tennis until 39.
“I have motivation to keep going so it’s difficult to think about not playing. But when it comes, I will know.
“When I wake up without motivation to improve, that will be the end. But until that day arrives, I’m here and enjoying it.”
And Nadal isn't letting his on-court problems get on top of him, he acknowledges that he lives a fortunate life and he is determined to enjoy it.
"Normally I don't lose the smile. I do not have one reason to lose the smile, even if I lose 100 tennis matches in the future," he said. "In general, I feel very lucky about my life, how it goes.
"I have the people that I love around me. I have the general health of myself. I enjoy playing golf. My life is very close to the sea. I enjoy being in the sea. I enjoy scuba diving, swimming, fishing. When I'm at home, I do the normal life of a 29 years old guy. I go out with friends, I visit family, cinema, golf … normal things. I enjoy the life outside of tennis.
"Tennis has been a very important part of my life, for sure, but I always say the same: Tennis is not everything for me."
Nadal arrives in Montreal on the back of victory in Hamburg at the start of the month, and he is hoping to carry that momentum into this week's event.
"One of the weeks I'm more happy with the whole season," he said of his time in Germany. "Playing worse or playing better, I have to remain very stable. I was not able to do it very often this season. That should be the way that I have to play, because one of the stronger points over my career (is) obviously the shots, but the mental part.
"This year, I've felt the mental part was more up and down than usual. (Now), I'm working well and I'm hoping that week (in Germany) will help me here."