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A tennis tour (or tennis circuit) is tennis played in tournament format at a series of venues over during a set period of weeks or months. Professional tour tennis is played globally with one season consisting of one calendar year. Several tournaments are held each week as players win prize money and earn ranking points. A player's ranking determines her or his ability to enter a particular tournament, as tournaments vary in the amount money and points obtainable. Winning a tournament typically requires winning four to six matches in succession, generally a match a day, as play is single-loss elimination. ==Current professional tour tennis== Currently professional male tennis players compete in one of three tours, while there are two tours for female pro players. The highest level of tour tennis is the ATP World Tour and the WTA Tour, for men and women respectively. The ATP World Tour is integrated with the second tier ATP Challenger Tour and the third tier ITF Men's Circuit, as a single, unified global ranking system is kept, the ATP Rankings. For women, a player's results on both the WTA Tour and ITF Women's Circuit determine her WTA Ranking. Female players are free to play in events in either tour, although top-ranked players almost always play just in WTA Tour events. In fact, they are obliged to appear in certain of the most prestigious tournaments and in a certain number of these during the year or face being penalized by the tour. The same is true of male players. For singles tennis, both men and women ranked outside of the world top 40 or so and inside the top 180 or so will compete in both the top and second tier tour events. For male players, those ranked outside of the top 180 will then compete on both the ATP Challenger Tour and ITF Men's Circuit, while most players ranked outside the top 400 or so must compete on the ITF Men's Circuit. (A few players, despite their ranking, have a certain personal stature that allows them to be granted wild cards into tournaments. It may be that they were once ranked higher or have a certain level of fame, either globally or where the tournament is being held.) A ranking cut-off is maintained that varies for each tournament - players ranked above the cut-off gain direct entry in that event's main draw while players ranked below it yet above a second cut-off gain entry into a qualifying tournament for the main draw. In singles tennis, such a player typically needs to win two or three qualifying matches to qualify for entry into the main draw. Matches are nearly always contested best two-of-three sets. Tiebreaks are the norm in deciding sets level at six games apiece. A typical tournament in any tier main draw for singles consists of 32 entrants, while the ATP 1000 events feature 58. For doubles, generally 16 teams compete and matches tied at one set each are settled by match tiebreaks. A few tournaments, notably the season-ending championship, feature round-robin play where players play initially in a mini-league instead of in the typical single-loss elimination. Generally in such events however, the final few rounds are still played in the typical knock-out format. The ATP and WTA tours generally hold more than one tournament each week, while the ITF circuits, which oversees several events weekly, hold a few events during the month of December, the top tier tours' off-season. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「tennis tour」の詳細全文を読む スポンサード リンク
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