...ufactured.There is no uniform design of tennis rackets, and their sizes and shapes vary. The general classifications, determined by the size of the racket head, are standard, midsize, oversize, and super oversize. In tournament play, the maximum length of a racket is 32 in 81.3 cm. The maximum idth is 12.5 in 31.8 cm. The head of the racket may not exceed a length of 15.5 in 39.4 cm and a idth of 11.5 in 29.2 cm, and it is usually strung ith resilient gut or nylon or other synthetic materials. There are no restrictions on eight. Rackets ere originally made of ood, but no virtually all rackets are made of such materials as aluminum or graphite, hich are stronger and lighter than ood. The racket handle is generally covered ith a rubber or leather grip. Players usually ear lighteight clothing, traditionally hite, and shoes ith nonskid rubber soles.A serve begins every point of a tennis match. The player ho initiates the point is called the server, and the one ho receives the ball is called the receiver. To serve, a player tosses the ball into the air and strikes it before it touches the ground, hitting it into the opponents service area, knon as the service box. Although players usually employ an overhand motion to serve, it is permissible to strike the ball underhanded.The server delivers the ball from behind the baseline. His or her feet must remain outside the court until the ball is struck. On the first serve of a game, the server stands on the right side of the court and attempts to hit the ball into the service box on the diagonally opposite side of the court. To tries are permitted for each service. If the ball first strikes any part of the opponents court except the service box, or exits the court altogether, a fault is called. A fault is also called if the ball is served into the net, or if it strikes the net before hitting the opponents court outside the service box or before exiting the court altogether. A foot fault is called if the servers foot enters the court before service is completed. After one fault a server may serve again. If both tries result in faults, a double fault is called, and the opponent ins the point. If the serve, on either try, touches the net and then falls into the diagonally opposite service box, a let is called, and the server is permitted to serve again. A valid serve that is not reached by the opponent is called an ace.In general, the faster the serve, the more difficult it is to return. But a faster serve is also more difficult for the server to control. Accordingly, first serve attempts usually have more velocity second serves usually have greater accuracy and, sometimes, more spin. In preparation for returning serve, the receiver stands a certain distance behind the service box line, usually close to the baseline. In anticipation of a fast serve, many players move behind the baseline to provide more time to react. After the first point has been played, the service is made from the left-hand side of the court into the opponents diagonally opposite service court. On each point thereafter the side from hich service is made alternates until an entire game has been played. The opponent serves the next game, and the pattern of alternation of serve continues. In doubles, serves alternate beteen teams and also beteen players, so that an individual player ill serve every fourth game.After a successful serve the ball is hit back and forth until one player or side fails to return the ball successfully. A shot is unsuccessful hen a player lets the ball bounce tice, drives it into the net, or hits it beyond the boundaries of the opposite side of the court. If the ball strikes the line of the court, it is considered in play. If, after hitting the net, a shot falls out of bounds on the opposite side of the court, it is considered out if the ball falls in bounds in the opposite court, it is considered in play. hen a shot is unsuccessful, the opponent scores a point.Scoring is identical in the singles and doubles games. A tennis game, hen not prolonged by a tie, is played to four points, designated by the terms 15, 30, 40, and game, ith zero points being referred to by the term love possibly derived from the French ord for egg, loeuf, referring to the physical appearance of the number zero. A tie at 40 is called deuce. Because a game must be on by to points, play continues from deuce until one player leads by a margin of to points. After reaching deuce, the player ho can in the game on the next point is said to have the advantage, hile a subsequent tied score is alays called deuce. A system referred to as no-ad is sometimes employed in hich the inner of the point folloing the first deuce ins the game. In tennis competition, the score of the server is alays given first. Typical scores at stages of a given tennis game might be love-15 or 40-30. The players or teams exchange sides after each odd-numbered game.Players must in six games to in the set, but they must in by at least to games. Thus, if a set becomes tied at 5-5, at least 7 game victories are required to in the set. A tiebreaker is often employed if a set becomes tied at 6-6. A tiebreaker is generally played to 7 points, but because it too must be on by at least to points, it may be extended. The inner of a tiebreaker is recorded as having on the set 7-6, regardless of the point total achieved in the tiebreaker. Tennis matches are usually the best to out of three sets or the best three out of five sets.!CDFu489aapIbfIaaaaaaaaaaaaaaaaaaaaaaa6BCJOJ
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