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Point (tennis)
A point in tennis is the smallest subdivision of the match. A point can consist of a double fault by the server, in which case the point is automatically won by the receiver. In all other cases, a point begins when a legal serve is hit by the server to the receiver on the opposite side of the court, and continues until one side fails to legally return the ball to the opposite side. Whichever side fails to do so loses the point and their opponent wins it. In the advantage scoring system, the first side to win four points by a two-point margin wins the game. To start a game, both sides begin at "love" (zero points). The first point won by a side is called "15," the second point is "30," and the third point is "40." If both sides have won three points in a game (i.e., 40-40), the score is called " deuce." From deuce, whichever side wins the following point is said to have "advantage" and can win the game by winning the next point (two-point margin). If the side with advantage loses t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennis
Tennis is a racket sport that is played either individually against a single opponent ( singles) or between two teams of two players each ( doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court. The object of the game is to manoeuvre the ball in such a way that the opponent is not able to play a valid return. The player who is unable to return the ball validly will not gain a point, while the opposite player will. Tennis is an Olympic sport and is played at all levels of society and at all ages. The sport can be played by anyone who can hold a racket, including wheelchair users. The modern game of tennis originated in Birmingham, England, in the late 19th century as lawn tennis. It had close connections both to various field (lawn) games such as croquet and bowls as well as to the older racket sport today called real tennis. The rules of modern tennis have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Video Tracking
Video tracking is the process of locating a moving object (or multiple objects) over time using a camera. It has a variety of uses, some of which are: human-computer interaction, security and surveillance, video communication and compression, augmented reality, traffic control, medical imaging and video editing. Video tracking can be a time-consuming process due to the amount of data that is contained in video. Adding further to the complexity is the possible need to use object recognition techniques for tracking, a challenging problem in its own right. Objective The objective of video tracking is to associate target objects in consecutive video frames. The association can be especially difficult when the objects are moving fast relative to the frame rate. Another situation that increases the complexity of the problem is when the tracked object changes orientation over time. For these situations video tracking systems usually employ a motion model which describes how the image ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USTA
The United States Tennis Association (USTA) is the national governing body for tennis in the United States. A not-for-profit organization with more than 700,000 members, it invests 100% of its proceeds to promote and develop the growth of tennis, from the grass-roots to the professional levels. The association was created to standardize rules and regulations and to promote and develop the growth of tennis in the United States. The USTA runs the USTA Billie Jean King National Tennis Center which hosts the US Open every year. The USTA has leagues in most places for adults skill levels between beginner and pro. The USTA also hosts tournaments across the country every weekend for club players or professionals. History The USTA was previously known as the United States National Lawn Tennis Association (USNLTA) and was established in 1881 by a small group of tennis club members in New York City and northeastern clubs, where most lawn tennis was played. In 1920 the word 'National' w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Tennis Federation
The International Tennis Federation (ITF) is the governing body of world tennis, wheelchair tennis, and beach tennis. It was founded in 1913 as the International Lawn Tennis Federation by twelve national tennis associations. As of 2016, there are 211 national and six regional associations that make up ITF's membership. The ITF's governance responsibilities include maintaining and enforcing the rules of tennis, regulating international team competitions, promoting the game, and preserving the sport's integrity via anti-doping and anti-corruption programs. The ITF partners with the Women's Tennis Association (WTA) and the Association of Tennis Professionals (ATP) to govern professional tennis. The ITF organizes the Grand Slam events, annual team competitions for men (Davis Cup), women ( Billie Jean King Cup), and mixed teams ( Hopman Cup), as well as tennis and wheelchair tennis events at the Summer Olympic and Paralympic Games on behalf of the International Olympic Committee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Collegiate Athletic Association
The National Collegiate Athletic Association (NCAA) is a nonprofit organization that regulates student athletics among about 1,100 schools in the United States, Canada, and Puerto Rico. It also organizes the athletic programs of colleges and universities in the United States and Canada and helps over 500,000 college student athletes who compete annually in college sports. The organization is headquartered in Indianapolis, Indiana. Until 1957, the NCAA was a single division for all schools. That year, the NCAA split into the University Division and the College Division. In August 1973, the current three-division system of Division I, Division II, and Division III was adopted by the NCAA membership in a special convention. Under NCAA rules, Division I and Division II schools can offer scholarships to athletes for playing a sport. Division III schools may not offer any athletic scholarships. Generally, larger schools compete in Division I and smaller schools in II an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawk-Eye
Hawk-Eye is a computer vision system used in numerous sports such as cricket, tennis, Gaelic football, badminton, hurling, rugby union, association football and volleyball, to visually track the trajectory of the ball and display a profile of its statistically most likely path as a moving image. The onscreen representation of the trajectory results is called Shot Spot. The Sony-owned Hawk-Eye system was developed in the United Kingdom by Paul Hawkins. The system was originally implemented in 2000 for television purposes in cricket. The system works via six (sometimes seven) high-performance cameras, normally positioned on the underside of the stadium roof, which track the ball from different angles. The video from the six cameras is then triangulated and combined to create a three-dimensional representation of the ball's trajectory. Hawk-Eye is not infallible, but is advertised to be accurate to within 3.6 millimetres and generally trusted as an impartial second opinion in sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASDAQ-100
The Nasdaq-100 (^NDX) is a stock market index made up of 101 equity securities issued by 100 of the largest non-financial companies listed on the Nasdaq stock exchange. It is a modified capitalization-weighted index. The stocks' weights in the index are based on their market capitalizations, with certain rules capping the influence of the largest components. It is limited to companies from a single exchange, and it does not have any financial companies. The financial companies are in a separate index, the NASDAQ Financial-100. History The NASDAQ-100 was launched on January 31, 1985 by the Nasdaq. It created two indices: the NASDAQ-100, which consists of Industrial, Technology, Retail, Telecommunication, Biotechnology, Health Care, Transportation, Media and Service companies, and the NASDAQ Financial-100, which consists of banking companies, insurance firms, brokerage firms, and Mortgage loan companies. The base price of the index was initially set at 250, but when it close ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Wells, California
Indian Wells is a city in Riverside County, California, in the Coachella Valley. Incorporated in 1967, it lies in between the cities of Palm Desert and La Quinta. As of the 2010 Census, the city population was 4,958. The city hosts the sixth-largest tennis tournament in the world, the Indian Wells Masters tennis tournament, presently known as the ''BNP Paribas Open''. The Indian Wells Masters is one of nine ATP World Tour Masters 1000 high-level events operated by the Association of Tennis Professionals, and one of the four WTA Premier Mandatory tournaments of the Women's Tennis Association. It is held at the Indian Wells Tennis Garden, which contains the second-largest tennis-specific stadium in the world. History As early as 1820, the area now known as Indian Wells was the site of a thriving Indian village, as reported by W.P. Blade, a Smithsonian Institution geologist. A decade later, when gold was discovered on the Colorado River, William D. Bradshaw built a trail fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ivan Ljubičić
Ivan Ljubičić (; born 19 March 1979) is a Croatian former professional tennis player. He reached a career-high Association of Tennis Professionals (ATP) world No. 3 singles ranking on 1 May 2006. His career highlights include reaching a Grand Slam semifinal at the 2006 French Open, and an ATP World Tour Masters 1000 title at the Indian Wells Masters in 2010 as well as 3 other finals, 2 of them coming in 2005 at Madrid and Paris, and the other at the Miami Masters in 2006. Since retiring, Ljubičić has coached ATP top 3 players Milos Raonic and Roger Federer. He was credited with Federer's improved backhand, especially evident on high shots, and tactical change of taking shots much earlier, taking more time, pace, and rhythm off his opponents at the same time making his overall game more offensive. Tennis career Ljubičić turned pro in 1998. During his career, he achieved his best results in indoor tournaments played on carpet or hardcourt. He reached consecutive indoor Mast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andy Murray
Sir Andrew Barron Murray (born 15 May 1987) is a British professional tennis player from Scotland. He was ranked world No. 1 by the Association of Tennis Professionals (ATP) for 41 weeks, and finished as the year-end No. 1 in 2016. Murray has won three Grand Slam singles titles, two at Wimbledon (2013 and 2016) and one at the US Open ( 2012), and has reached eleven major finals. Murray was ranked in the top 10 for all but one month from July 2008 through October 2017, and was no lower than world No. 4 in eight of the nine year-end rankings during that span. Murray has won 46 ATP singles titles, including 14 Masters 1000 events. Originally coached by his mother Judy alongside his older brother Jamie, Murray moved to Barcelona at age 15 to train at the Sánchez-Casal Academy. He began his professional career around the time Roger Federer and Rafael Nadal established themselves as the two dominant players in men's tennis. Murray had immediate success on the ATP Tour, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Justine Henin-Hardenne
Justine Henin (; born 1 June 1982) is a Belgian former professional tennis player. She spent a total of 117 weeks as the world No. 1 and was the year-end No. 1 in 2003, 2006 and 2007. Henin, coming from a country with limited success in tennis, helped establish Belgium as a leading force in women's tennis with Kim Clijsters, and led the country to its first Fed Cup crown in 2001. She was known for her all-court style of play and for being one of the few female players to use a single-handed backhand. Henin won seven Grand Slam singles titles: winning the French Open in 2003, 2005, 2006 and 2007, the US Open in 2003 and 2007 and the Australian Open in 2004. At Wimbledon, she was the runner-up in 2001 and 2006. She also won a gold medal in the women's singles at the 2004 Olympic Games and won the year-ending WTA Tour Championships in 2006 and 2007. In total, she won 43 WTA singles titles. Tennis experts cite her mental toughness, the completeness and variety of her game, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Fault (tennis)
In tennis, if a player serves a double fault, they make a mistake with both serve (tennis), serves and lose the point (tennis), point. Amateur Era singles records Gerald Patterson allegedly holds the record for the most double faults committed in a Grand Slam (tennis), Grand Slam final: he committed 27 double faults in a 71-game match against John Hawkes (tennis), John Hawkes in the 1927 Australian Championships – Men's singles, 1927 Australian Championships, but still managed to clinch the victory. At the 1957 Wimbledon Championships – Women's singles, 1957 Wimbledon Championships, Maria de Amorin committed 17 doubles faults in a row in his second-round encounter against Berna Thung. De Amorin took a set off her opponent, but eventually lost the match. Open Era singles records Double faults have been officially recorded by the top-level professional tennis circuits since 1991. Only main draw (tennis), main draw singles matches are included here. ATP Tour Among all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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