The 22 -year -old Chinese player announced two days ago that he had to undergo arthoscopic surgery due to continuous pain in his right elbow. The world’s sixth ranked player Zheng lost in the first round in Wimbledon last month. Zheng said that she felt that it would take them months to recover, so it is certain that she would not be able to participate in the US Open starting on August 24. He has been replaced by Leolia Genzen of France in the main draw of the US Open.