Italy's Paolo Lorenzi returns the ball to David Ferrer of Spain during the men's singles quarterfinal at the Mexican Open Tennis Tournament held in Acapulco, State of Guerrero, Mexico, on Feb. 28, 2013. Ferrer won 2-0. (Xinhua/Bao Feifei)

David Ferrer of Spain returns the ball to Italy's Paolo Lorenzi during the men's singles quarterfinal at the Mexican Open Tennis Tournament held in Acapulco, State of Guerrero, Mexico, on Feb. 28, 2013. Ferrer won 2-0. (Xinhua/Bao Feifei)

David Ferrer of Spain returns the ball to Italy's Paolo Lorenzi during the men's singles quarterfinal at the Mexican Open Tennis Tournament held in Acapulco, State of Guerrero, Mexico, on Feb. 28, 2013. Ferrer won 2-0. (Xinhua/Bao Feifei)

David Ferrer of Spain celebrates after the men's singles quarterfinal against Italy's Paolo Lorenzi at the Mexican Open Tennis Tournament held in Acapulco, State of Guerrero, Mexico, on Feb. 28, 2013. Ferrer won 2-0. (Xinhua/Bao Feifei)

David Ferrer of Spain returns the ball to Italy's Paolo Lorenzi during the men's singles quarterfinal at the Mexican Open Tennis Tournament held in Acapulco, State of Guerrero, Mexico, on Feb. 28, 2013. Ferrer won 2-0. (Xinhua/Bao Feifei)

Italy's Paolo Lorenzi returns the ball to David Ferrer of Spain during the men's singles quarterfinal at the Mexican Open Tennis Tournament held in Acapulco, State of Guerrero, Mexico, on Feb. 28, 2013. Ferrer won 2-0. (Xinhua/Bao Feifei)