Fans of Spain's Rafael Nadal hold a sign which reads: "Rafa No 1" as Nadal leaves the court after his opponent Tomas Berdych of the Czech Republic retired from their men's singles semifinal match of the China Open tennis tournament in Beijing, Oct 5, 2013. Nadal will return to the top of the men's world rankings after Berdych retired with a back injury during their China Open semifinal on Saturday. [Photo/Agencies] |