Federer says he needs "to make sure not to strain myself because I want to play as long as possible on the ATP Tour. I'm sorry for my French fans, I'll see them next year at Roland Garros." Seeded No. 3 in Paris, Federer will be replaced by a lucky loser in the main draw.
Federer has already earned a spot at the ATP Finals, which features the top eight players in the world.
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