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Wimbledon 2012: Serena Williams can be defeated - Virginia Wade
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Former Wimbledon champion Virginia Wade believes Victoria Azarenka will overcome Serena Williams to reach the women's final.
However, Wade says the other the semi-final clash between Agnieszka Radwanska and Angelique Kerber is "too close to call".
The semis take place on Thursday from 1300 BST on Centre Court.
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