Tennis - a sport in which two players play against each other, or two teams of two players in each, a team against the team, on a court - court, divided in half by a cross-grid.The goal of the game is to roll the ball through the grid on the side of the partner so that the ball falls within the rival's area and that he could not beat him back.During the game players use additional gaming equipment - a racket. It is designed to reflect, change the direction and power of the flight of a rubber ten