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Super Tie-break
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennis
Tennis is a List of racket sports, racket sport that is played either individually against a single opponent (singles (tennis), singles) or between two teams of two players each (doubles (tennis), doubles). Each player uses a tennis racket strung with a cord to strike a hollow rubber tennis ball, ball covered with felt over or around a net and into the opponent's tennis court, court. The object is to manoeuvre the ball in such a way that the opponent is not able to play a valid return. If a player is unable to return the ball successfully, the opponent scores a Point (tennis), point. Playable at all levels of society and at all ages, tennis can be played by anyone who can hold a racket, including Wheelchair tennis, wheelchair users. The original forms of tennis developed in France during the late Middle Ages. The modern form of tennis originated in Birmingham, England, in the late 19th century as lawn tennis. It had close connections to various field (lawn) games such as croqu ... [...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 Sport governing body, 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 (tennis), 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 wa ... [...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. there are 211 national and six regional associations that make up the 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 Association of Tennis Professionals (ATP) and the Women's Tennis Association (WTA) to govern professional tennis. The ITF organizes 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. The ITF sanctions circuits th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Collegiate Athletic Association
The National Collegiate Athletic Association (NCAA) is a nonprofit organization that regulates College athletics in the United States, student athletics among about 1,100 schools in the United States, and Simon Fraser University, 1 in Canada. It also organizes the Athletics (physical culture), athletic programs of colleges and helps over 500,000 college student athletes who compete annually in college sports. The headquarters is located in Indianapolis, Indiana. Until the 1956–57 academic year, the NCAA was a single division for all schools. That year, the NCAA split into the NCAA University Division, University Division and the NCAA College Division, College Division. In August 1973, the current three-division system of NCAA Division I, Division I, NCAA Division II, Division II, and NCAA Division III, Division III was adopted by the NCAA membership in a special convention. Under NCAA rules, Division I and Division II schools can offer athletic scholarships to students. Divi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawk-Eye
Hawk-Eye is a computer vision system used to visually track the trajectory of a ball and display a profile of its statistically most likely path as a moving image. It is used in more than 20 major sports, including cricket, tennis, Gaelic football, badminton, hurling, rugby union, association football and volleyball. 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. It works via the use of up to ten high-performance cameras, normally positioned on the underside of the stadium roof, which track the ball from different angles. The video from the cameras is then Triangulation, 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 2.6 millimetres and is increasingly used as an impartial review in sports. It has been accepted by governing bodies in tennis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASDAQ-100
The Nasdaq-100 (NDX) is a stock market index made up of 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 closed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Wells, California
Indian Wells is a city in Riverside County, California, United States, in the Coachella Valley. Incorporated in 1967, it lies in between the cities of Palm Desert and La Quinta, California, La Quinta. As of the 2020 United States census, 2020 census, the city population was 4,757. 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 Masters 1000 tournaments operated by the Association of Tennis Professionals, and one of the four mandatory WTA 1000 tournaments of the Women's Tennis Association. It is held at the Indian Wells Tennis Garden, which contains the List of tennis stadiums by capacity, second-largest tennis-specific stadium in the world. History The city derived its name from a historic Cahuilla Native American water reservoir, which served as a crucial water supply for nearby tribes. As early as 1820, the area now known as Indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ivan Ljubičić
Ivan Ljubičić (; born 19 March 1979) is a Croatian former professional tennis player, coach and Tennis TV commentator. 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 major semifinal at the 2006 French Open, and a Masters title at the Indian Wells Masters in 2010. He also contested three other Masters finals, two in 2005 at Madrid and Paris, and the other at the 2006 Miami Open. Since retiring, Ljubičić has coached ATP top-3-ranked players Milos Raonic and Roger Federer. He was credited with Federer's improved backhand later in his career, especially evident on high shots, as well as introducing tactical changes of taking shots much earlier: taking more time, pace, and rhythm off opponents and simultaneously making Federer's game more offensive. Tennis career Ljubičić turned pro in 1998. During his career, he achieved his best results in indoor tournaments played on ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andy Murray
Sir Andrew Barron Murray (born 15 May 1987) is a British former professional tennis player and coach. He was ranked as the List of ATP number 1 ranked singles tennis players, world No. 1 in men's singles by the Association of Tennis Professionals (ATP) for 41 weeks, including as the year-end No. 1 in 2016 ATP Tour, 2016. Murray won 46 ATP Tour-level singles titles, including three Grand Slam (tennis)#Tournaments, majors at the 2012 US Open – Men's singles, 2012 US Open, 2013 Wimbledon Championships – Men's singles, 2013 Wimbledon Championships, and 2016 Wimbledon Championships – Men's singles, 2016 Wimbledon Championships. He also won two gold medals at the Tennis at the Summer Olympics, Summer Olympics, the 2016 ATP World Tour Finals – Singles, 2016 ATP World Tour Finals, 14 ATP Masters 1000 tournaments, Masters events, and contested a total of eleven major finals. Originally coached by his mother Judy Murray, Judy alongside his older brother Jamie Murray, Jamie, Murr ... [...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 was ranked as the world No. 1 in women's singles by the Women's Tennis Association (WTA) for 117 weeks, including as the year-end No. 1 in 2003, 2006 and 2007. Henin won 43 WTA Tour-level singles titles, including seven majors (four at the French Open, two at the US Open and one at the Australian Open), as well as an Olympic gold medal at the 2004 Athens Games and two Tour Finals titles. Coming from a country with little success in the sport, Henin helped establish Belgium as a leading force in women's tennis alongside Kim Clijsters, leading it to its first Fed Cup crown in 2001. Henin was known for her all-court style of play and for being one of the few female players to use a single-handed backhand. Tennis experts cite her mental toughness, the completeness and variety of her game, her footspeed and footwork, and her one-handed backhand (which all-time great John McEnroe described as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Fault (tennis)
In tennis, if the serving player makes two mistakes in the same point, it is called a double fault, and they lose the point and the point is awarded to their opponent. Amateur Era singles records Gerald Patterson allegedly holds the record for the most double faults committed in a Grand Slam final: he committed 27 double faults in a 71-game match against John Hawkes in the 1927 Australian Championships, but still managed to clinch the victory. At the 1957 Wimbledon Championships, Maria de Amorin committed 17 double faults in a row in her 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 singles matches are included here. ATP Tour Among all players, active or retired, the worst average of double faults per match, shared between Henrik Holm and Radomír Vašek, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
