1. Tennis is a sport that is practiced in a plain,
rectangular, divided by an intermediate
network, which is called cancha.2 is disputed
between two players (singles) or between two
pairs (doubles) playing with bats and balls and
is to hit the ball with the racket to go from one
side to another field happening above red.3
The word 'tennis' comes from English, tennis,
which in turn has its origin in the French
language word tenez, 4 expression howling
coming tennis player (called tennis), who by
launching the pelota.5

2. HISTORY
The Egyptian, Roman, Greek and Aztec
similar games played and tennis. The
first references of tennis take place in
France, named 'Jeu de Paume' because
initially hit the ball with his hand. He
later began using snowshoes. The
original tennis courts played on natural
grass. It originated in Europe in the late
eighteenth century [citation needed]
and expanded at first by English-
speaking countries, especially among
the upper classes. Today's tennis has
become universal, and is played in
almost every country in the world. Since
1926, with the creation of the first tour,
is a professional sport. It is also an
Olympic sport since the 1896 Athens
Olympics.

3. Measurements of the track
Measurements of the tennis court.
Tennis is played on a rectangular court. Its exact measurements are
defined in units of the imperial system and vary depending on the
mode you play (single or double). For individuals is 78 feet (23.78
meters) long and 27 feet (8.23 meters) wide. For doubles, the length is
the same and the width is 36 feet (10.97 meters). These limits are
marked by lines, which are considered part of the track. A mesh-
shaped track network divided into two halves that correspond to the
opponents. The height of the poles network is 3 feet 6 inches (1.06
meters), and in the center of 3 feet (0.914 meters). On each side of the
net there are two rectangles, measuring 21 feet (6.40 meters) long and
13.5 feet (4.11 meters) wide, which serve only to determine whether a
serve is valid or not.

5. Score
A tennis match is composed of sets (sets in English). The first to win a certain number of
partial wins. Each part consists of games. In each game there is a player who draws, which
alternates. In turn, the games consist of points.
The first to win 4 points with a minimum difference of 2 points compared to its rival is the
winner of a game, in case none of the two players or teams have a two to reach four points
wins the game the first to achieve a difference of 2 points. The account is quite particular
points: when a player wins his first point, the score is 15, when you win 2 points, 30, and
when you win 3 points, 40. For example, if the server of that game has won 3 points and 1
point receiver, the score is 40-15. Always named first punch punctuation. When both
players are tied at 40 is said to be deuce or "equal". The first player or team to win a point
after deuce achieved an 'advantage', and if he wins the next point wins the game, otherwise
it is back on deuce until there is the difference of two points.
The player takes the part is getting to six games with a difference of two. In case a player
reaches 6 games, but unlike 1 (6-5) will be followed until one gets the appropriate
difference. If the tournament regulations set a limit game, have to play a special game
called tie-break or "sudden death", in which the outcome is decided by correlative points
(one-zero-two-zero-three-zero, etc..), until someone gets reach 7 points, with difference of
2. If you get to 7 points without difference of 2 (eg 7-6), will have to wait for one of the two
players get a difference of 2 points, which is the that gets the win in the tie-break and the
partial 7-6. The player who starts taking on a tie-break only has a kick turn (with first and
second serve from the right side) and from there, will alternate two shifts per player pull up
the completion.

6. Technique
Tennis is a sport that requires players to master techniques such as: strokes, grips, effects, body
positions and movements, as well as physical stamina needed to endure long rallies.
Knocking
During the game, using many types of shots, each with their techniques, the hits are: the
serve, the right, the back, the globe, with it, the left and the top.
Serve
The serve is the most important hit of tennis, as this starts the point, and its correct application
can allow the person taking be in an advantageous position upon return or achieve one ace or
ace (earned point without impact the opponent the ball), or the impact of the adversary after the
ball does not come to pass the network or it will go beyond the limits of the bands (in which case
it is called ace, but off spot). By having good serve, the player learns to finish better shocks
made ​​without the ball touches the ground and make it hard for the opponent can score a point
after you make a cut.
The second serve is usually done seeking safer outcome. This often made topspin serves, cut or
kick to cause greater difficulty rival, since those usually dangerous serves to change the direction
of the ball or the speed after the bounce. One of the changes as does each serve is that the
cut, try to make the ball run across the strings from side to side of the upright bike, and equals
topspin but horizontally.
Among the best punches of the Open Era are called Croats Goran Ivanicevic and Ivo
Karlovic, Americans Pete Sampras, Andy Ruddick and John Isner, Roger Federer and Dutchman
Richard Krajicek.

7. Drive
Preparation for the drive (left-handed).
The drive or right is the basic beat. Is to hit the
ball after the bounce, directly, on the same side of
the business arm of the player. For most players is
the ultimate weapon to win a point and the most
control.
For proper drive, it should be shaped to the ball,
in the case of a right-handed, the stroke begins on
the right side of the body, continuing there
through to hit the ball and ending at the left side
of the body.
The impact should be in the area between
shoulder and hip, and the movement is from
bottom to top. Once the ball hits the racket, the
tennis player puts his arm straight before closing
the blow. At the moment the ball comes up, the
player makes the decision to give a powerful blow
or cross somewhere.
It is the easiest stroke to learn, being also the most
natural.

8. Setback
One-handed backhand.
The reverse is the blow to the side opposite the drive. Despite being a natural
mechanical stroke is usually one of the hardest to master when you start in tennis.
It is very important to position the body, which should be placed in profile, used
as a technique for this, lower the shoulder to point towards the network, while the
right arm for right-handed and left on the left-handed passes without being
deflected by under the chin, to settle back before returning to hit the ball, always
in front of the body. It is important, as the drive, that the body weight is moved
back and forth at the time of ball impact
Decades ago, the backhand was taught to hit it taking the racquet with one hand
(a great exponents of this technique were Ivan Lendl, Gustavo Kuerten, Ken
Rosewall, Guillermo Vilas, Gaston Gaudio, Stefan Edberg, Pete Sampras and Boris
Becker. At present they are Stanislas Wawrinka, Roger Federer, Richard
Gasquet, Fernando Gonzalez. Nowadays two-handed backhand is gaining more
and more ground, players like David Nalbandian, Rafael Nadal, Juan Martin Del
Potro, Novak Djokovic and already retired Marcelo Rios and Andre Agassi make
use of this coup. would be worth remembering Jimmy Connors and Bjorn Borg
whose strokes inspired two-handed backhand which is currently popularizing
this form of scrimmage.

10. Forehand
The volley or air blow is the stroke that is performed before the ball bounce on the
ground. It is usually performed near the net to define a point. Because the player closer
to the opponent, is a blow that needs to be done with great speed and reflex. The racket
must be at all times in front and high. The coup was carried carrying on foot opposite the
side where the ball will hit simultaneously with the shaping of the body, so that the
racquet can do a quick backward movement to hit the ball forward and from top to
bottom, using the force that brings the ball itself, if possible without using extra energy
without bending the wrist. The blow that is used to reach the network in a play called
approach
Let
The left or drop shot (English drop, 'drop') is a hit in which power is subtracted from the
ball with the intention of dropping as close to the network, the other side. It is usually
performed to drive, but you can also do reverse. Beat The preparation is similar to the
preparation of the drive (or reverse), and must be made at the last moment, to surprise
the opponent, waiting for a shot at the bottom. Upon impact, instead of realizing the
large swing, the racquet must fall perpendicular to the ball with a flick of the wrist, to
produce that will trickle down to the ball and have a good network.
It is generally used when the opponent player is far behind the strap of the back of the
court, and not a knock that should be used with great regularity, since the aim is to
surprise the opponent.

11. Contradejada
The counter is usually left to a left adequate response, which the player comes shortly before the
second bounce. As the ball is usually very low and close to the net, it is not possible to use a powerful
blow, thus, the player only has the option to perform a soft knock on the merits, i.e., a new left
response , this time made from near the net. Contradejada is one word, not two.
Attempt or smash
The smash or closing is a blow that is done on the head with a kick like motion. Usually you can hit
with great force relatively safely and is often a defining shot. Most are performed near the net or in
the middle of the track before the bounce of the ball. It is often the answer to a balloon made by the
opponent was not high enough. It can also be done from the baseline after the chop, although less
defining. It is a high punch, made from the top down, before the ball bounces, or after it does, but
only if this takes a parable more vertical than horizontal. To be effective, it is essential to be very
powerful and not given an opportunity to answer the contrary, since it is always a hit in definition. It
is done when the ball is very high, up to the outstretched arm of the player.
The coup is prepared outlining the body, bringing the racket back and placing it behind his
head, while his free hand pointing to the top, towards the ball. At the moment of impact, the rear
foot goes forward, while leaving behind the racket body in a movement similar to the serve. Upon
ball impact, the wrist should be flexed downward, ending the coup similarly to serve. The ball must
bounce before the return instead. Main article: Big Willy. player Guillermo Vilas.

12. Ways to hit the ball
In different strokes the ball may be impacted
in different ways, thereby giving impact and
impede the return paths. They are obtained
with different handles and ball impact
shapes.
Each of the strokes, with their respective
paths as the effect applied on the ball and
the respective types of boat against the
surface are explained below.

13. Hit topspin
Ball dragged from the bottom up, to produce topspin.
The topspin shot or top spin (literally in English "effect from above") is a type of
impact on the ball, by which it is "brushed" from below, "wrapping" with a twist of
the wrist, imposing an effect forward rotation, which makes the ball bounce when,
from flying upward and forward, the opposing player sending back. Notably topspin
also be produced with a rapid acceleration of the elbow, allowing us to print more
power to the ball. This shot requires fast movements, especially of the legs, as it
requires hitting the ball in front of the player, however, if played wrist, can hit from
more points, as it is a safer stroke, although less potent .

14. BIOGRAPHY: WIKIPEDIA
http://es.wikipedia.org/wiki/Tenis