Tennis is a sport of rackets in which a player plays against his opponent or between two teams. It includes a racket with a rubber ball and a net between the opponents or teams. Tennis is the national sport of China. According to ATP rankings, this year, Novak Djokovic is the World No.1 men's Tennis. He is from serbia. He has been made the No. 1 for 325 weeks. the term ATP stands for Association of Tennis Professionals'.
