You know sometimes when you have those nights where you feel tired and you want to sleep, but can't? I think Rafael Nadal and his fans are probably feeling a similar style frustration at the moment. This year cannot end soon enough for the beleaguered Spaniard.
Ever since Wimbledon it seems to have been one long tale of woe for the former world No.1, and the bad news hasn't ended yet either.
While his friends and rivals battle it out in the ATP World Tour Finals in London, Nadal has only just emerged from hospital following surgery to repair the appendix injury that prevented his participation at the O2 Arena. The same appendix injury that flared up right on his return from a wrist problem.
Back to bad back
If that wasn't bad enough, it would appear that his long-standing back injury has reared its ugly head once more. Three major injuries in a few months; the world no.3 cannot catch a break at the moment.
According to his doctor, the 28-year-old is going to need stem cell treatment to repair some of the damaged cartilage in his back, it's an injury which affects many athletes. It will most likely prevent Nadal from training for another month.
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“Nadal has a problem typical in tennis with a back joint, he had it at the Australian Open, and we have decided to treat it with stem cells,” revealed Dr Angel Ruiz-Cotorro. “We are going to put cells in a joint in his spine."
As eluded to by Ruiz-Cotorro, the 14-time Grand Slam champion has played through the pain barrier throughout the season. Many attributed Nadal's severe pain as the reason behind his loss in the final of the Australian Open, which gave Stanislas Wawrinka his maiden Major title.
The 'King of Clay' then struggled through the spring and early summer on his favourite surface, though he did overcome a flare-up of the problem at the French Open to go-on and lift a record ninth trophy in Paris, at the expense of great rival Novak Djokovic.
Nadal hoping for better 2015
However, the injury that really stopped him in his tracks was a wrist issue, which went some way to ensuring an early exit from Wimbledon at the hands of Australian teenager Nick Kyrgios. His long-awaited return last month proved unfruitful due to appendicitis.
Nadal will be hoping for a clean bill of health so he can get back-on-track in 2015. Djokovic and Roger Federer have runaway at the top of the world rankings, therefore the Majorcan-born superstar will look to claw back some of the ground he lost, having started this year as No.1.