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Serve (tennis)
A serve (or, more formally, a service) in tennis is a shot to start a point. A player will hit the ball with a racquet so it will fall into the diagonally opposite service box without being stopped by the net. Normally players begin a serve by tossing the ball into the air and hitting it (usually near the highest point of the toss). The ball can only touch the net on a return and will be considered good if it falls on the opposite side. If the ball contacts the net on the serve but then proceeds to the proper service box, it is called a ''let''; this is not a legal serve in the major tours (but see below) although it is also not a ''fault''. Players normally serve overhead; however serving underhand is allowed. The serve is the only shot a player can take their time to set up instead of having to react to an opponent's shot; however, as of 2012, there is a 25-second limit to be allowed between points. The serve is one of the most difficult shots for a novice, but once mastered it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tommy Haas Serves
Tommy may refer to: People * Tommy (given name) * Tommy Atkins, or just Tommy, a slang term for a common soldier in the British Army Arts and entertainment Film and television * ''Tommy'' (1931 film), a Soviet drama film * ''Tommy'' (1975 film), a British operetta film based on the Who's album ''Tommy'' * ''Tommy'' (2015 film), a Telugu drama film * ''Tommy'' (TV series), a 2020 American drama series Literature * ''Tommy'' (King poem), by Stephen King, 2010 * ''Tommy'' (Kipling poem), by Rudyard Kipling, 1892 Music * ''Tommy'' (The Who album), 1969 ** ''Tommy'' (London Symphony Orchestra album), 1972 ** ''Tommy'' (soundtrack), a soundtrack to the 1975 film ** ''The Who's Tommy'', a stage production, premiered 1992 * ''Tommy'' (The Wedding Present album), 1988 * ''Tommy'' (Dosh album), 2010 * ''Tommy'' (EP), a 2017 EP by Klein * ''Tommy'', a 2022 EP by Kiesza * ''Tommy'', a 1965 album by Tommy Adderley * ''Tommy'', a 1970 EP by The Who * "Tommy", a 1991 song by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnus Effect
The Magnus effect is an observable phenomenon commonly associated with a spinning object moving through a fluid. The path of the spinning object is deflected in a manner not present when the object is not spinning. The deflection can be explained by the difference in pressure of the fluid on opposite sides of the spinning object. The Magnus effect is dependent on the speed of rotation. The most readily observable case of the Magnus effect is when a spinning sphere (or cylinder) curves away from the arc it would follow if it were not spinning. It is often used by association football and volleyball players, baseball pitchers, and cricket bowlers. Consequently, the phenomenon is important in the study of the physics of many ball sports. It is also an important factor in the study of the effects of spinning on guided missiles—and has some engineering uses, for instance in the design of rotor ships and Flettner aeroplanes. Topspin in ball games is defined as spin about a ho ... [...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] |
Pat-a-cake, Pat-a-cake, Baker's Man
"Pat-a-Cake, Pat-a-Cake, Baker’s Man", "Pat-a-Cake", "Patty-cake" or "Pattycake" is an English nursery rhyme. It has a Roud Folk Song Index number of 6486. Verse :Pat-a-cake, pat-a-cake, baker's man. :Bake me a cake as fast as you can :Roll it, pat it, and mark it with a B :Throw it in the oven for Baby and me. I. Opie and P. Opie, The Oxford Dictionary of Nursery Rhymes' (Oxford University Press, 1951, 2nd edn., 1997), pp. 341–2. . Origins The earliest recorded version of the rhyme appears in Thomas D'Urfey's play ''The Campaigners'' from 1698, where a nurse says to her charges: ...and pat a cake Bakers man, so I will master as I can, and prick it, and prick it, and prick it, and prick it, and prick it, and throw't into the Oven. The next appearance is in ''Mother Goose's Melody'' (c. 1765) in the form: :Patty Cake, Patty Cake, :Baker's Man; :That I will Master, :As fast as I can; :Pat it and prick it, :And mark it with a T, :And there will be enough for Tommy and m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nick Kyrgios
Nicholas Hilmy Kyrgios ( ; born 27 April 1995) is an Australian professional tennis player. In singles, Kyrgios' career-high Association of Tennis Professionals, ATP singles ranking of world No. 13 was achieved on 24 October 2016. He has won seven ATP Tour singles titles, including the 2019 Citi Open – Men's singles, 2019 and 2022 Citi Open, 2022 Washington Open, and reached eleven finals, most notably a Grand Slam (tennis)#Tournaments, major final at the 2022 Wimbledon Championships – Men's singles, 2022 Wimbledon Championships, and a ATP Tour Masters 1000, Masters 1000 final at the 2017 Western & Southern Open – Men's singles, 2017 Cincinnati Masters. In doubles, during his professional career, Kyrgios has a career-high ranking of world No. 11, achieved on 7 November 2022, winning a major doubles title at the 2022 Australian Open – Men's doubles, 2022 Australian Open and reaching the semifinals of the 2022 Miami Open – Men's doubles, Miami Open, both times partnering T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1999 French Open
The 1999 French Open was a tennis tournament that took place on the outdoor clay courts at the Stade Roland Garros in Paris, France. The tournament was held from 24 May until 6 June. It was the 103rd staging of the French Open, and the second Grand Slam tennis event of 1999. Seniors Men's singles Andre Agassi defeated Andrei Medvedev, 1–6, 2–6, 6–4, 6–3, 6–4 :• It was Agassi's 4th career Grand Slam singles title and his 1st and only title at the French Open. Women's singles Steffi Graf defeated Martina Hingis, 4–6, 7–5, 6–2 :• It was Graf's 22nd and last career Grand Slam singles title and her 6th title at the French Open. Men's doubles Mahesh Bhupathi / Leander Paes defeated Goran Ivanišević / Jeff Tarango, 6–2, 7–5 :• It was Bhupathi's 1st career Grand Slam doubles title. :• It was Paes' 1st career Grand Slam doubles title. Women's doubles Serena Williams / Venus Williams defeated Martina Hingis / Anna Kournikova, 6–3, 6� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martina Hingis
Martina Hingis (, sk, Martina Hingisová; 30 September 1980) is a Swiss former professional tennis player. Hingis is the first Swiss player, male or female, to win a major title and attain a world No. 1 ranking. She spent a total of 209 weeks as the singles world No. 1 and 90 weeks as doubles world No. 1, holding both No. 1 rankings simultaneously for 29 weeks. She won five major singles titles, 13 major women's doubles titles (including the Grand Slam in 1998), and seven major mixed doubles titles, for a combined total of 25 major titles. In addition, she won the season-ending WTA Finals twice in singles and thrice in doubles, an Olympic silver medal in doubles, and a record 17 Tier I singles titles. Hingis set a series of "youngest-ever" records during the 1990s, including youngest-ever Grand Slam champion and youngest-ever world No. 1. Before ligament injuries in both ankles forced her to withdraw temporarily from professional tennis in early 2003, at the age of 22, she had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ivan Lendl
Ivan Lendl (; born March 7, 1960) is a Czech–American former professional tennis player. He is widely regarded as one of the greatest tennis players of all time. Lendl was ranked world No. 1 in singles for 270 weeks and won 94 singles titles. He won eight major singles titles and was runner-up a joint record 11 times (tied with Roger Federer and Novak Djokovic), making him the first man to contest 19 major finals. Lendl also contested a record eight consecutive US Open finals, and won seven year-end championships. Lendl is the only man in professional tennis history to have a match winning percentage of over 90% in five different years (1982, 1985, 1986, 1987, and 1989). He also had a comfortable head-to-head winning record against his biggest rivals, which translates to a 22-13 record (4-3 in major matches) against Jimmy Connors and a 21-15 record (7-3 in major matches) against John McEnroe. Lendl's dominance of his era was the most evident at the year-end championships, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1989 French Open
The 1989 French Open was a tennis tournament that took place on the outdoor clay courts at the Stade Roland Garros in Paris, France. The tournament was held from 29 May until 11 June. It was the 93rd staging of the French Open, and the second Grand Slam tennis event of 1989. For the first time in French Open history the Singles championships were won by two teenagers – Michael Chang (17 years, 3 months) and Arantxa Sánchez (17 years, 6 months). Chang still holds the record for youngest ever male Grand Slam singles title winner. He gained admirers for his audacious style of play and battling qualities. Sánchez broke the record for the youngest champion at Roland Garros, a record bettered the following year by Monica Seles (16 years, 6 months). Sánchez's victory made her only the seventh woman to win a Grand Slam tournament in the 1980s; the others being Martina Navratilova, Chris Evert, Tracy Austin, Evonne Goolagong, Steffi Graf and Hana Mandlíková. Steffi Graf's l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael Chang
Michael Te-pei Chang (born February 22, 1972) is an American former professional tennis player and coach. He is the youngest man in history to win a singles major, winning the 1989 French Open at 17 years and 109 days old. Chang won a total of 34 top-level professional singles titles, (including seven Masters titles) was a three-time major runner-up, and reached a career-best ranking of world No. 2 in 1996. Since he was shorter than virtually all of his opponents, he played a dogged defensive style utilizing his quickness and speed. In 2008, Chang was inducted into the International Tennis Hall of Fame. He has coached Kei Nishikori since 2014. Early life After moving from Hoboken, New Jersey, to St. Paul, Minnesota, where Michael learned tennis, the Changs moved first to Placentia, California, and then Encinitas, California, to increase the tennis opportunities for Michael and his older brother, Carl. Growing up Chang learned some Chinese from his Taiwanese parents and can s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arc (geometry)
In mathematics, a curve (also called a curved line in older texts) is an object similar to a line, but that does not have to be straight. Intuitively, a curve may be thought of as the trace left by a moving point. This is the definition that appeared more than 2000 years ago in Euclid's ''Elements'': "The urvedline is ��the first species of quantity, which has only one dimension, namely length, without any width nor depth, and is nothing else than the flow or run of the point which ��will leave from its imaginary moving some vestige in length, exempt of any width." This definition of a curve has been formalized in modern mathematics as: ''A curve is the image of an interval to a topological space by a continuous function''. In some contexts, the function that defines the curve is called a ''parametrization'', and the curve is a parametric curve. In this article, these curves are sometimes called ''topological curves'' to distinguish them from more constrained curves su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dwight F
Dwight may refer to: People * Dwight (given name) * Dwight D. Eisenhower (1890–1969), 34th president of the United States and former military officer *New England Dwight family of American educators, military and political leaders, and authors * Ed Dwight (born 1933), American test pilot, participated in astronaut training program * Mabel Dwight (1875–1955), American artist * Elton John (born Reginald Dwight in 1947), English singer, songwriter and musician Places Canada * Dwight, Ontario, village in the township of Lake of Bays, Ontario United States * Dwight (neighborhood), part of an historic district in New Haven, Connecticut * Dwight, Illinois, village in Livingston and Grundy counties * Dwight, Kansas, city in Morris County * Dwight, Michigan, an unincorporated community * Dwight, Nebraska, village in Butler County * Dwight, North Dakota, city in Richland County * Dwight Township, Livingston County, Illinois * Dwight Township, Michigan Institutions * Dwight Correc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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