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Wednesday, April 1, 2009

Tennis Racquets

Modern tennis racquets vary in length, weight, and head size. 21" to 26" is normally a junior's length, while 27" or 27.5" are for stronger and taller adult players. Weights of a racquet also vary between 8 ounces unstrung and 12.5 ounces unstrung. Head size also plays a role in a racquet's qualities. A larger head size generally means more power, and a larger "sweet spot" that is more forgiving on off-center hits. A smaller head size offers more precise control. Head sizes of recent racquets vary between 90 sq. inches and 137 sq. inches as the Pro Staff 6.0 (85 sq. inches) went out of production last year.
Throughout most of tennis' history, racquets heads were around 65 square inches and racquets were made of laminated wood. In the late 1960s, Wilson produced the T2000 steel racquet with wire wound around the frame to make string loops. It was popularized by American top player Jimmy Connors. In 1975, aluminum construction allowed for the introduction of the first "oversized" racquet which was manufactured by Weed. Prince popularized the oversize racquet, which had a head size of approximately 110 square-inches and opened the door for the introduction of racquets having other non-standard head sizes such as midsize 90 square-inches and mid-plus size 95 square-inches. In the early 1980s, "graphite" (carbon fibre) composites were introduced, and other materials were added to the composite, including ceramics, glassfibre, boron, and titanium. The Dunlop Max200G used by John McEnroe from 1983 was an early graphite racquet, along with the very popular Prince "Original" Graphite. Composite racquets are the contemporary standard.
Longer racquets were introduced by Dunlop in order to give additional reach for shots such as the serve and volley where shorter players may be at a disadvantage. Midsize or mid-plus racquets are the general standard for professional players.
Stringing (material, pattern, tension) is an important factor in the performance of a tennis racquet. A few elite players use natural gut, but the vast majority of strings are a nylon or polyester synthetic. Some (American champion Pete Sampras is a prominent example) consider the natural string to be more responsive, providing a better "feel", but synthetic is favored for its much superior durability, consistency, as well as much lower cost. String pattern (the vertical/horizontal grid) is a function of the racquet head size and design. A tighter pattern is considered to deliver more precise control; a more "open" pattern to offer greater potential for power and spin. Modern racquets are marked with a recommended string tension range. The basic rule is that a lower tension creates more power (from a "trampoline" effect) and a higher string tension creates more control (the ball stays on the strings longer, for more "feel" and shot direction.) Double strung tennis racquets were introduced in 1977 and then banned because they permitted excessive spin. A modern version of a legal double strung racquet has been introduced.

Choosing a tennis racquet:
Choosing the right racquet will often boost a player's game. Racquet manufacturers such as Head, Wilson, Prince, Yonex, and Babolat, just to name a few, constantly introduce new lines of racquets each year. Depending on the budget, there are plenty of racquets to choose from; however, choosing the right one for a player's game is the key. There are several guidelines such as grip size, head size, length, flex, string patterns, weight, and balance to take into considerations before making the investment. The best thing to do is to demo different type of racquets to feel the difference before deciding on which one to buy. Most tennis equipment shops provides a demo program for their customers.

Grip size:
Choosing the right size of grip is essential. The grip size is measured as the length of the perimeter of the octagonal cross-section of the handle. Grip sizes 3⅞ and 4 are for juniors where 4¼, 4⅜, 4½, and 4⅝ are for adults. The average size for female is 4¼, while the average size for male is 4⅜. A method for determining the right grip size is to hold the racquet where the palm is on the same bevel as the string face. It should be possible to comfortably fit the index finger of your non-racquet hand into the space created between the ring finger and the palm that is holding the racquet. If there is not enough space for the index finger, then the grip is too small. If there is too much space then the grip is too big. If one is in between two grip sizes, the advice is to pick the smaller one. It is always possible to make the grip bigger by adding an overgrip which will increase the size by 1/16 or half a grip size.

Head size:
Head size is the measure of the hitting area. A midsize racquet has a hitting area of 85–95 square inches, mid-plus 95–105 square inches, and oversize greater than 105 square inches. Bigger head size racquet offer more power and spin, however; they lack maneuverability and stability. Smaller head size racquet offer more control and less power. In general, more accomplished players tend to use mid-size and mid-plus racquet because they can generate more power on their own and need a racquet that they can control their power with. Larger racquets usually appeal more to beginner and intermediate players who are looking for more power and larger sweet spot.

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