Tennis is one of the most popular sport in the world. Around 87 million people play tennis and more than a billion people around the world count themselves as tennis fans,watching matches in-person and on televison.
Some positions in tennis is baseliners,serve-and volley players,and all court players.
The inventer of modern tennis has been disputed,but the officially recognized centennial of the game in 1973 commemorated its introduction by Major Walter Clopton Wingfield in 1873