Roger Federer pulled out of the Qatar Open due to back pain on Friday only 10 days before the start of the Australian Open.
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Federer pulls out of Qatar Open
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Djokovic pulls out of China Open
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Roddick withdraws from French Open
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Federer wins battle of former champions
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Roger Federer overcomes sluggish start
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Roger Federer handed tough draw for Wimbledon
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Nadal withdraws from Paris Masters with shoulder injury
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Roger Federer cruises in French Open
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Woods withdraws with neck injury
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Rafael Nadal will skip Dubai Tennis Championships to rest a minor knee injury
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Murray withdraws from French Open
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Roger Federer skips from seven ATP events in 2013
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Isner withdraws from Australian Open
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Federer wins opening set against Murray
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Roddick pulls out of French Open
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Roger Federer breezes into fourth round of Australian Open
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Andy Murray withdraws from Rogers Cup