Li Na pulls out of US Open
NEW YORK -- Two-time major champion Li Na pulled out of the US Open on Thursday because of a knee injury she said has bothered her for several months.
The only tennis player from China to win a Grand Slam singles title also withdrew from hard-court tournaments in Montreal and Cincinnati over the next two weeks.
The second-ranked Li wrote in a posting on Facebook that she has "been struggling" with her knee since March "and it is just not where I need it to be in order to ...
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