Swede Robin Soderling has announced his retirement from tennis more than four years after his last match due to the effects of glandular fever.
The first man to defeat Rafael Nadal at the French Open in the 2009 fourth round last played a match in July, 2011 after coming down with his illness.
"I have realised that I will not be fit enough to play tennis at the level I demand of myself," Soderling, 31, told Swedish news agency TT on Wednesday.
"Although my career as a tennis player is over I still have a bright future ahead of me and my schedule for the next few years is full," said Soderling, winner of 10 titles and currently working with the Stockholm Open ATP event.
Soderling reached the Roland Garros final in 2009 and 2010, losing to Roger Federer and Nadal, respectively, and stood fourth in the rankings in 2010.
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He is now married and has a child.
