Li Na Retires from Professional Tennis — bleacherreport.com

Citing the continued erosion of her ailing knees, two-time Grand Slam winner Li Na announced her retirement from professional tennis in a lengthy statement released on her official Facebook page. "Representing China on the tennis court was an extraordinary privilege and a true honor," Li wrote. "Having the unique opportunity to effectively bring more attention to the sport of tennis in China and all over Asia is something I will cherish forever. But in sport, just like in life, all great things must come to an end."

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