Following a battle with glandular fever spanning over five years, former world number four Robin Soderling has announced his retirement from professional tennis.
The 31-year-old Swede, who resides in Monte Carlo, is most famous for being the first man to defeat the 'King of Clay', Rafael Nadal, at the French Open in 2009.
The two-time Roland Garros finalist had revealed in May that he was aiming to return to the ATP Tour in 2016, but since then his recovery not gone to plan, making a return unrealistic.
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His illness had prevented him from competing since 2011, with his last win coming against Spaniard David Ferrer to claim the Swedish Open in Bastad that same year.
Therein lies the problem - having contracted the illness weeks before his triumph in Bastad, the initial symptoms were overlooked as Soderling soldiered on.
"Since I was not aware of the seriousness of this [illness], I made the mistake of continuing to train and compete with the virus in my body, which resulted in a sharp overtraining syndrome. I have since struggled to recover completely from this," Soderling told BBC Sport.
In May he had told BBC Radio 5 live that he was 'not very far from' being 100%, but clearly various factors have hindered his recovery to the point of no return.
A man who may have gone on to bring back Grand Slam success to Sweden - following in the footsteps of Stefan Edberg, Mats Wilander and the great Bjorn Borg, reached the quarter-finals at both Wimbledon and the US Open, as well as his two French Open final appearances.
He confirmed his retirement from the ATP Tour via Twitter: