What makes Rafael Nadal the ``King of clay''?
Rafael Nadal is considered by many to be the greatest clay court player of all time, having won an incredible six French Opens and 35 ATP titles on the surface, but what is it that makes him the ``King of Clay``?
After four straight defeats, Rafael Nadal returns to his favourite clay surface when he plays Tomas Berdych in the opening match of the Davis Cup on Friday as Spain sets out to defend its title against the Czech Republic.