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In her career, Petra Kvitova has won four singles titles on the WTA Tour. Her first title came in 2009 at the Wimbledon Championships, where she defeated Maria Sharapova in the final. She then won titles at the 2011 Madrid Open, the 2012 French Open, and the 2014 Australian Open. Kvitova has also reached the final of the US Open twice, in 2011 and 2012.