Roger Federer has withdrawn from the French Open, claiming he would be taking an "unnecessary risk" with his fitness.
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The 2009 champion at Roland Garros has been struggling in recent weeks, having withdrawn from the Madrid Open with a back problem before being beaten by Dominic Thiem in the third round of the Internazionali d'Italia.
"I regret to announce that I have made the decision not to play in this year's French Open," he wrote on his official Facebook page.
"I have been making steady progress with my overall fitness, but I am still not 100 per cent and feel I might be taking an unnecessary risk by playing in this event before I am really ready.