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.)
If you find reading boring then you can try watching free instructional videos on the internet. The best part about these videos is that it is made by tennis pros who are passionate about teaching tennis, so you won’t find the videos hard to understand. Between reading and watching the instructional videos, you will pick up important details about tennis on your own.
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Now that you know the basics about the game, it is time you start practicing with your tennis buddy. There is nothing like whacking a ball after a hard day at work to relieve stress. However, as a tennis coach, I do not encourage you to whack the ball because you will end up picking balls rather than rallying with your buddy. I strongly encourage that you start slow. You can start from the service line and then gradually progress to the baseline. So plan regular meetings with your tennis buddy.
The comprehensive rules promulgated in 1924 by the ILTF, have remained largely stable in the ensuing eighty years, the one major change being the addition of the tiebreak system designed by Jimmy Van Alen.[32] That same year, tennis withdrew from the Olympics after the 1924 Games but returned 60 years later as a 21-and-under demonstration event in 1984. This reinstatement was credited by the efforts by the then ITF President Philippe Chatrier, ITF General Secretary David Gray and ITF Vice President Pablo Llorens, and support from IOC President Juan Antonio Samaranch. The success of the event was overwhelming and the IOC decided to reintroduce tennis as a full medal sport at Seoul in 1988.[33][34]
The new, extremely thin high-tech carbon fibre is a very interesting material for tennis rackets: as used in Prince’s TXT Warrior rackets, for example, in the shaft and heart area, it brings the typical advantages of a rigid frame (stability, control, power). Unlike a conventional stiff racquet, the Textreme racquets are comfortable and playable without the slightest compromises!
The set is won by the first player (or team) to have won at least six games and at least two games more than his or her opponent. Traditionally, sets would be played until both these criteria had been met, with no maximum number of games. To shorten matches, James Van Alen created a tie-breaker system, which was widely introduced in the early 1970s. If the score reaches 6–5 (or 5–6), one further game is played. If the leading player wins this game, the set is won 7–5 (or 5–7). If the trailing player wins the game, the score is tied at 6–6 and a special tiebreaker game is played. The winner of the tiebreak wins the set by a score of 7–6 (or 6–7).
In 2004, the ITF implemented a new rankings scheme to encourage greater participation in doubles, by combining two rankings (singles and doubles) into one combined tally.[64] Junior tournaments do not offer prize money except for the Grand Slam tournaments, which are the most prestigious junior events. Juniors may earn income from tennis by participating in the Future, Satellite, or Challenger tours. Tournaments are broken up into different tiers offering different amounts of ranking points, culminating with Grade A.

“Gerry,” he began, “you yourself have said you want to get better, and you are getting better.” There followed a series of rhetorical questions involving whether the Utah coach was getting better, anyone else my age was getting better — whether he himself was getting better. He swept his arm up toward the main courts and noted that some of the players in the midst of matches up there, men in their 40s or early 50s, had been on high school teams and college teams. Wasn’t I holding my own in playing doubles with them?

A tennis match is intended to be continuous.[65] Because stamina is a relevant factor, arbitrary delays are not permitted. In most cases, service is required to occur no more than 20 seconds after the end of the previous point.[65] This is increased to 90 seconds when the players change ends (after every odd-numbered game), and a 2-minute break is permitted between sets.[65] Other than this, breaks are permitted only when forced by events beyond the players' control, such as rain, damaged footwear, damaged racket, or the need to retrieve an errant ball. Should a player be determined to be stalling repeatedly, the chair umpire may initially give a warning followed by subsequent penalties of "point", "game", and default of the match for the player who is consistently taking longer than the allowed time limit.[66]

Moving, always moving, and all the time thinking and checking off: Maintain the continental grip, the base knuckle of the index finger of my left hand resting on the bevel one notch counterclockwise from the racket handle’s high noon. (Check.) Keep the racket in front and the racket head up. (Check.) Knees slightly bent. (Check.) Turn sideways quickly, and punch with your shoulder, don’t swing; and tighten your grip at the moment the ball is about to hit the strings.
Steffi Graf is considered by some to be the greatest female player. Billie Jean King said in 1999, "Steffi is definitely the greatest women's tennis player of all time."[123] Martina Navratilova has included Graf on her list of great players.[123] In December 1999, Graf was named the greatest female tennis player of the 20th century by a panel of experts assembled by the Associated Press.[124] Tennis writer Steve Flink, in his book The Greatest Tennis Matches of the Twentieth Century, named her as the best female player of the 20th century, directly followed by Martina Navratilova.[125]
“Gerry,” he began, “you yourself have said you want to get better, and you are getting better.” There followed a series of rhetorical questions involving whether the Utah coach was getting better, anyone else my age was getting better — whether he himself was getting better. He swept his arm up toward the main courts and noted that some of the players in the midst of matches up there, men in their 40s or early 50s, had been on high school teams and college teams. Wasn’t I holding my own in playing doubles with them?
Tennis is played on a rectangular, flat surface. The court is 78 feet (23.77 m) long, and 27 feet (8.2 m) wide for singles matches and 36 ft (11 m) for doubles matches.[48] Additional clear space around the court is required in order for players to reach overrun balls. A net is stretched across the full width of the court, parallel with the baselines, dividing it into two equal ends. It is held up by either a metal cable or cord that can be no more than 0.8 cm (1⁄3 in).[49] The net is 3 feet 6 inches (1.07 m) high at the posts and 3 feet (0.91 m) high in the center.[48] The net posts are 3 feet (0.91 m) outside the doubles court on each side or, for a singles net, 3 feet (0.91 m) outside the singles court on each side.
"Tennis Court" was played during the 2013 Wimbledon Championships – Women's Singles Final by British Broadcasting Corporation (BBC).[88] "Tennis Court" was remixed by Australian musician Flume in 2014.[89] In July 2014 American producer Diplo released his version, titled the Diplo's Andre Agassi Reebok Pump Mix.[90] In 2014, "Tennis Court" was featured in the soundtrack of the PlayStation 4, Xbox One and Microsoft Windows versions of Grand Theft Auto V.[91]
When both sides have won the same number of points then: when each side has won one, or two, points, the score is described as "15-all" and "30-all" (or "15-up" and "30-up"), respectively. However, if each player has won three points, the score is called as "deuce", not "40–all". From that point on in the game, whenever the score is tied, it is described as "deuce", regardless of how many points have been played.
The purpose of the Northwest Louisiana CTA is to make an positive impact on the tennis community by providing support and resources in the development of programs, events, leagues, and facilities promoting tennis as a lifetime healthful sport within North Louisiana to all ages and all skill levels. The NWLACTA will collaborate with the USTA and other associations and programs in the pursuit of these goals.
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