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Summary Serena Williams returned to the practice court, after being recovered from an illness.
The world number 10 did not play a match since winning the Wimbledon last year due to a series of health problems, including blood clots on her lung.The multiple-grand slam champion announced her return on her Twitter account.Williams was ranked number 1 in the world following her win at 2010 Wimbledon. She retained the spot till October 2010 before being passed by Caroline Wozniacki -- the current world number 1. Williams number 10 ranking is her first double-digit ranking since March 2008.
