Badminton rackets are light, with top quality rackets weighing between about 70 and 95 grams (with guts ). Modern rackets are composed of carbon fiber composite (graphite reinforced plastic), which may be augmented by a variety of materials. Carbon fiber has an excellent strength to weight ratio, is stiff, and gives excellent kinetic energy transfer. Before the adoption of carbon fiber composite, rackets were made of wood to their excessive weight and cost.
This article is very helpful. I played tennis quite a bit during teenage years and now I am getting back in to tennis in my 40s. My serve and backhand feels very natural but my forehand feels really awkward right now. I started to focus on technique and it’s not going well. After reading this, it makes me think that I should focus more on timing and position with comfortable swing and come back to technique once some of the rust wears off.
The string pattern of a tennis racquet plays a large part in how the ball is hit and what it does after impact. Racquets are typically strung in a grid with patterns of 16 by 18, 16 by 19, and 18 by 20. The first two options allow for a more open string pattern whereas the second pattern has strings that are more closely packed together, creating a variety of differences in how the ball reacts when hit. The type of racquet that you should choose largely depends on your tennis goals:
A great way of understanding this shot is by observing different professional tennis players who are good at different things. I find that you can learn tennis pretty fast by visualization. For example, Novak Djokovic, currently ranked as the number one tennis player in the world is famous for his flat forehand and backhand. Caroline Wozniacki, currently ranked as the best female tennis player is admired worldwide for her two-handed backhand. Observe such players and practice as much as you can so that you can play tennis to the best of your abilities!
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. 
Van Alen called his innovation a "tiebreaker", and he actually proposed two different kinds or versions of it: best-five-of-nine-points tiebreaker and best-seven-of-12-points tiebreaker. The first lasts a maximum of 9 points, and awards victory in the set to whichever player or team first reaches 5 points – even if the other player or team already has 4; the margin of victory can be a single point. Because this "9-point" tiebreaker must end after a maximum of 9 points, even if neither player or team has a 2-point (or greater) margin, Van Alen also called it a "sudden-death tiebreaker" (If and when the score reached four points all, both players faced simultaneous set point and/or match point.). This type of tiebreaker had its Grand Slam debut at 1970 US Open and was employed there until 1974. Apart from being used for 5 years at US Open it was also used 1 year at Wimbledon and for a while on the Virginia Slims circuit and in American Colleges.
A well-constructed, properly maintained concrete court can provide decades of recreational enjoyment. But you'll have to pay to play. The cost of a regulation-size post-tensioned concrete tennis court with a cushioned surface can be double that of an equivalent asphalt court. "The basic asphalt court starts at about $40,000 to $45,000, with the average price probably in the mid $50s to low $60s. For a post-tensioned court, you'll pay in the low $100,000 range," says Kolkmann.
The International Tennis Federation has tested the typical ball speed for various court surfaces, and classifies them as slow, medium, or fast. Generally, a hard concrete surface—with no surfacing system applied—provides a fast speed of play. If that's not your preference or you want a more resilient surface to reduce the impact on your joints, an abundance of acrylic color coatings and cushioning systems are on the market that allow you to adapt the court surface to your style of play.
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." Martina Navratilova has included Graf on her list of great players. 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. 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.
In Tennis: A Cultural History, Heiner Gillmeister reveals that on December 8, 1874, British army officer Walter Clopton Wingfield wrote to Harry Gem, commenting that he (Wingfield) had been experimenting with his version of lawn tennis “for a year and a half”. In December 1873, Wingfield designed and patented a game which he called sphairistikè (Greek: σφαιριστική, meaning "ball-playing"), and was soon known simply as "sticky" – for the amusement of guests at a garden party on his friend's estate of Nantclwyd Hall, in Llanelidan, Wales. According to R. D. C. Evans, turfgrass agronomist, "Sports historians all agree that [Wingfield] deserves much of the credit for the development of modern tennis." According to Honor Godfrey, museum curator at Wimbledon, Wingfield "popularized this game enormously. He produced a boxed set which included a net, poles, rackets, balls for playing the game – and most importantly you had his rules. He was absolutely terrific at marketing and he sent his game all over the world. He had very good connections with the clergy, the law profession, and the aristocracy and he sent thousands of sets out in the first year or so, in 1874." The world's oldest annual tennis tournament took place at Leamington Lawn Tennis Club in Birmingham in 1874. This was three years before the All England Lawn Tennis and Croquet Club would hold its first championships at Wimbledon, in 1877. The first Championships culminated a significant debate on how to standardize the rules.