Fedderer Withdraws from Qater Open: Back Pain Can Be a Serious Injury for Athletes Yahoo! Sports Federer's withdrawal from the competition is the result of back pain that has been unresponsive to treatment and pain medication. Federer experienced back spasms during multiple matches and fears the injury could become worse if he continues to compete ..
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Fedderer Withdraws from Qater Open: Back Pain Can Be a Serious Injury for Athletes – Yahoo! Sports
