Post-tensioned concrete is reinforced with a grid of high-strength sheathed steel tendons, or cables. While the concrete is curing, the cables are tensioned in both directions and held permanently under stress by anchoring them in a perimeter beam. This squeezing action keeps the concrete in compression, improving its tensile (or bending) strength. The more the concrete is squeezed together, the less likely it is that shrinkage cracks will develop or open. (See a more complete description of post-tensioning from the Post-Tensioning Institute.)
By 1975, aluminum construction improvements allowed for the introduction of the first American "oversized" racket, which was manufactured by Weed. Prince popularized the oversize racket, which had a head size of approximately 110 square inches (710 cm2). Howard Head was able to obtain a broad patent for Prince, despite the prior art of the Bentley Fortissimo (the first oversize, made in Germany of fiberglass) and the Weed. The patent was rejected by Germany but approved in the USA. The popularity of the Prince aluminum oversize had the side effect of popularizing rackets having other non-standard head sizes such as mid-size 85–90 square inches (550–580 cm2) and mid-plus sizes 95–98 square inches (610–630 cm2). Fairly quickly, midsize frames began to become the most-used frames in the pro tours. Martina Navratilova popularized the midsize graphite racket, with her wins using the Yonex R-7, the first midsize graphite racket made by Yonex. Nearly at the same time, however, she said the "jumbo" rackets (midsize included) should be removed from the sport for making it easier. She said she would use them only because other players could, as they were tournament-legal. Fewer players chose to use oversize rackets, and some switched to midplus frames after their earliest career for more control. Fiberglass frames also had a brief period of limited popularity, making fewer inroads among top players than aluminum. Also, the earliest composites, such as the Head Competition series, used by Arthur Ashe, were made without graphite. These were more flexible than a typical early graphite composite but stiffer than wood, fiberglass, and aluminum.
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The White House tennis court has been a favorite outdoor recreation area for many presidents and their families. Tennis courts were first installed in the Theodore Roosevelt years on the near south side of the West Wing. The court was moved further south around 1910, to where the swimming pool is today, and were enjoyed by the Wilson daughters and Coolidge sons, among others. Florence Harding hosted the first women's tennis exhibition at the White House. And it was on the old White House tennis court that Calvin Coolidge, Jr. got a blister after playing without socks, which led to his death by blood-poisoning at the age of 16.


To begin to learn to play tennis, you need to understand its unusual scoring method. As a tennis beginner, you must understand how to keep score. Scoring doesn’t start with 1 or 0 — it starts with the term “love”, equivalent to zero. The first point is then 15 followed by the next point, 30, and the next point, 40. The following point is the winning point and it’s called game point or set point or match point — depending on which you are playing.
For right-handed players, the backhand is a stroke that begins on the left side of their body, continues across their body as contact is made with the ball, and ends on the right side of their body. It can be executed with either one hand or with both and is generally considered more difficult to master than the forehand. For most of the 20th century, the backhand was performed with one hand, using either an eastern or a continental grip. The first notable players to use two hands were the 1930s Australians Vivian McGrath and John Bromwich, but they were lonely exceptions. The two-handed grip gained popularity in the 1970s as Björn Borg, Chris Evert, Jimmy Connors, and later Mats Wilander and Marat Safin used it to great effect, and it is now used by a large number of the world's best players, including Rafael Nadal and Serena Williams.[77]

"The biggest drawback of asphalt courts is not that they crack, for even a post-tensioned slab may crack from shrinkage or even develop minor structural cracking, but that the cracks continue to widen year after year," says Kolkmann. "I have seen asphalt courts with cracks as wide as 2 to 3 inches, making them a hazard to the players. The advantage with a post-tensioned slab is that it will not allow the crack to widen, but will keep it compressed to a very thin line."
Play all your practice games in sets. Tennis is played in sets--you don’t just play one game and then go home! Sets consist of at least six games. The set doesn’t end until one player wins six games and has a margin of two wins over their opponent. For example, if one player has won six games and the other has won five, they’ll have to keep playing until the winner has two more wins than the loser.[6]
If you learn to play tennis, it can be your first step toward a lifetime of fitness and pleasure. And now that we’ve discussed how to learn to play tennis with the basics, you’re ready to get out on the court. There’s no better way to learn to play tennis than with practice; with practice, you’ll not only learn to play tennis, you’ll learn to play tennis well.
The origin of the use of "love" for zero is also disputed. The most likely explanation is that it derives from the French expression for "the egg" (l'œuf) because an egg looks like the number zero.[8][9] This is similar to the origin of the term "duck" in cricket, supposedly from "duck's egg", referring to a batsman who has been called out without scoring a run. One possibility comes from the Dutch expression iets voor lof doen, which means to do something for praise, implying no monetary stakes.[10] Another theory on the origins of the use of "love" comes from the notion that, at the start of any match, when scores are at zero, players still have "love for each other".[11]
Any court surface may be used indoors. Hard courts[8] are most common indoors, as they are made with the most versatile materials and surface finishes. Clay courts are installed indoors with underground watering systems, and used mostly for Davis Cup matches. The conclusion of the Wimbledon Championships, in 2012, was played on the lawn of Centre Court under the closed roof and artificial lights. The Halle Open has also seen a number of matches played on its grass court in the Gerry Weber Stadion with the roof closed. Carpet surfaces have been used both on the ATP World Tour and World Championship Tennis circuit, though no events currently use them. Historically, other surfaces have been used indoors such as hardwood at the defunct World Covered Court Championships and London Indoor Professional Championships. Currently, the ATP World Tour Finals event is the most important indoor tennis tournament.
The tiebreaker – more recently shortened to just "tiebreak", though both terms are still used interchangeably – was invented by James Van Alen and unveiled in 1965 as an experiment at the pro tournament he sponsored at Newport Casino, Rhode Island,[23] after an earlier, unsuccessful attempt to speed up the game by the use of his so-called "Van Alen Streamlined Scoring System" ("VASSS"). For two years before the Open Era, in 1955 and 1956, the United States Pro Championship in Cleveland, Ohio, was played by VASSS rules. The scoring was the same as that in table tennis, with sets played to 21 points and players alternating five services, with no second service. The rules were created partially to limit the effectiveness of the powerful service of the reigning professional champion, Pancho Gonzales. Even with the new rules, however, Gonzales beat Pancho Segura in the finals of both tournaments. Even though the 1955 match went to 5 sets, with Gonzales barely holding on to win the last one 21–19, it is reported to have taken 47 minutes to complete.[24] The fans attending the matches preferred the traditional rules, however, and in 1957 the tournament reverted to the old method of scoring.

Keeping in mind that you will have to dedicate a lot of time each week with a private preferably to achieve this level. But if you have the money and mind to do this then you can do this no matter what age you essentially start at because you can play tournaments at any level except the pro ATP or WTA level because you need sponsors and dedicate time fully for that.
After this Incident 6 Month Later I injured my Left Ankle in The MRI Scan I found my ankle Ligament is tear so I visited the doctor After getting the report and checking my ankle doctor said you need to take rest couple of month after getting lot of ERP and NIDDLE THERAPY finally after 1.5 year later my ankle is now in that position so that I can play tennis.
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After this Incident 6 Month Later I injured my Left Ankle in The MRI Scan I found my ankle Ligament is tear so I visited the doctor After getting the report and checking my ankle doctor said you need to take rest couple of month after getting lot of ERP and NIDDLE THERAPY finally after 1.5 year later my ankle is now in that position so that I can play tennis.

The ProCushion System, depicted in the illustration above, is the ultimate professional and residential cushioned option for tennis court surfaces. This 100% acrylic coating system is designed to provide optimum resilience and spin responsive play. The shock absorbing layers of the ProCushion system provide unparalleled player comfort at an affordable cost. Flexible acrylic binders maximize the feel of the rubber granules for decades after application.
Points are counted using ordinary numbering. The set is won by the player who has scored at least seven points in the tiebreak and at least two points more than their opponent. For example, if the score is 6 points to 5 and the player with 6 points wins the next point, they win the tiebreak (7 points to 5), as well as the set (7 games to 6). If the player with 5 points wins the point instead (for a score of 6–6), the tiebreak continues and cannot be won on the next point (7–6 or 6–7), since no player will be two points ahead. In the scoring of the set, sometimes the tiebreak points are shown as well as the game count, e.g., 710–68. Another way of listing the score of the tiebreak is to list only the loser's points. For example, if the set score is listed as 7–6(8), the tiebreak score was 10–8 (since the 8 is the loser's score, and the winner must win by two points). Similarly, 7–6(3) means the tiebreak score was 7–3.
To promote her works to American audiences, Lorde held her first US show at Le Poisson Rouge in New York on 6 August 2013 and performed "Tennis Court" among songs from The Love Club EP.[75] She subsequently included the song on the set list for her debut concert Pure Heroine Tour, which ran from late 2013 throughout 2014 in support of her debut studio album.[76][77] On 13 November 2013, Lorde performed "Tennis Court" among five other songs from The Love Club and Pure Heroine on Live on Letterman.[78] Six days later, Lorde held her first UK concert at Soho, London, where she performed several tracks from Pure Heroine including "Tennis Court".[79] She also performed the track during the "Almost Acoustic Christmas" event on KROQ-FM radio station on 9 December.[80]

A tie-break set is played with the same rules as the advantage set, except that when the score is tied at 6–6, a tie-break game (or tiebreaker) is played. Typically, the tie-break game continues until one side has won seven points with a margin of two or more points. However, many tie-break games are played with different tiebreak point requirements, such as 8 or 10 points. Often, a 7-point tie-breaker is played when the set score is tied at 6–6 to determine who wins the set. If the tiebreak score gets to 6-6, then whichever player to win the best of two points wins the set. [19]
Another alternative set format are so called "short sets" where the first to four games to win by two games. In this format a tie-break is played at four games all. The ITF experimented with this format in low level Davis Cup matches, but the experiment was not continued. Nevertheless, this alternative remains as an acceptable alternative in the ITF rules of Tennis.[32]

Advanced players improve their performance through a number of accoutrements. Vibration dampeners may be interlaced in the proximal part of the string array for improved feel. Racket handles may be customized with absorbent or rubber-like materials to improve the players' grip. Players often use sweat bands on their wrists to keep their hands dry and head bands or bandanas to keep the sweat out of their eyes as well. Finally, although the game can be played in a variety of shoes, specialized tennis shoes have wide, flat soles for stability and a built-up front structure to avoid excess wear.
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