Italy's Sara Errani returns the ball to Eugenie Bouchard of Canada during the women's singles match of the Mexican Open Tennis Tournament in Acapulco, State of Guerrero, Mexico, on Feb. 27, 2013. (Xinhua/Bao Feifei)

Italy's Sara Errani returns the ball to Eugenie Bouchard of Canada during the women's singles match of the Mexican Open Tennis Tournament, in Acapulco, State of Guerrero, Mexico, on Feb. 27, 2013. (Xinhua/Bao Feifei)

Italy's Sara Errani returns the ball to Eugenie Bouchard of Canada during the women's singles match of the Mexican Open Tennis Tournament, in Acapulco, State of Guerrero, Mexico, on Feb. 27, 2013. (Xinhua/Bao Feifei)

Canada's Eugenie Bouchard returns the ball to Sara Errani of Italy during the women's singles match of the Mexican Open Tennis Tournament, in Acapulco, State of Guerrero, Mexico, on Feb. 27, 2013. (Xinhua/Bao Feifei)