1. According to most historians, the game of tennis was invented
by Frenchmonks in the 11th or 12th century. They hit a ball with
their hands over a rope strung across a courtyard or against the
walls of the monasteries. 2. Next, players began using a glove
with webbing between the fingers or a solid paddle. 3.
Eventually players began using a piece of webbing attached to a
handle, which became the modern day racquet. 4. The first tennis
balls were made of wool or hair wrapped up in leather. 5. Tennis
is a game played indoors or outdoors by two players when playing
singles or four players when playing doubles. 6. Tennis is
played on a level court usually made of grass, clay , concrete,
or materials made for indoor use such as wood or synthetics. 7.
The length of a standard tennis court is 78 feet. The width of a
court differs with the type of match played there. For singles
match, width of tennis court is 27 feet, and for doubles match
it is 36 feet. 8. The height of the net in the middle of the
tennis court