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 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 3? and 4 are for juniors where 4¼, 4 3/8, 4½, and 4 3/8 are
for adults. The average size for female is 4¼, while the average size
for male is 4 3/8. 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 in 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 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.
Racquet Length
The standard
length of a tennis racquet is 27 inches. However, in recent years,
manufacturers introduced extra long or stretch racquets which ranges
from 27.5 to 29 inches long. These racquets, called extended length
racquets, can give players more power and slightly extra reach.
Usually, the extra long racquet is lighter in weight compared to its
standard length counterpart to keep it maneuverable.
Flex
The flex or
stiffness of a tennis racquet is the racquet?s resistance to bending or
deforming upon impact with the ball. A stiffer racquet bends less, thus
depleting less energy from the ball and offers more power. A flexible
racquet bends more, resulting in more energy loss and less power, but
more control of the ball. Players with short swing would want to have
stiffer racquets since it will give the most power. A much less stiff
racquet give less power and would suit players with longer swing who
can generate their own power. Stiff racquets also offer solid feel
while less stiff racquets have a softer feel. One thing to keep in mind
is the highly stiff racquets tend to give players tennis elbow.
String Pattern
String
pattern is measured by how many strings go up and down (called mains)
and how many strings go side to side (crosses) when the racquet is
fully strung. An open string pattern is one where there is a lot of
empty space in the string bed because there are fewer strings. A 16 x
18 is a common "open" string pattern where 18 x 20 is an example of a
?closed? string pattern. Open string patterns are popularly thought to
allow for more spin potential, as the ball can embed itself into the
strings more, due to their wider spacing. However, recent scientific
studies have found that stringbed properties do not directly affect
spin potential of a racquet. A more open string pattern does make for
higher deflection angles, which results in higher arch in ball's
trajectory - this difference in deflection angle may give an impression
of more spin. One drawback of open string pattern is it reduces the
string?s durability. Open string patterns place more impact stress on
individual strings and also allow the strings to move more freely,
increasing abrasion which causes string breakage.
Weight
Technology
has played a large role in racquet weights. Until the 1990s, tennis
racquets weighed an average of 12-13 ounces. When Hammer technology was
introduced by Wilson, it reduced the weight to 10-11 ounces. Nowadays,
most manufacturers offer sub 10 ounces racquets. Heavier racquets are
less maneuverable but more powerful and more stable than the lighter
counter part. Lighter racquets generally are best suited for beginner
and intermediate players because of their maneuverability. More
accomplished players tend to prefer heavier racquets. When examining
the weight of the racquet, it is also important to understand the
weight balance.
Balance
Racquets with
the same weight could have different balance. A racquet with more
weight distributed on the head rather than the handle is called a head
heavy racquet, and the opposite is called a head light racquet. Head
heavy racquets give players more power but lack maneuverability because
of weight distribution. On the other hand, head light racquets provide
more control and maneuverability. Most accomplished players tend to
choose head light racquets.