So, a lot of people are very competitive in everything they try. They want to have the best business if they get into it, they want to be the best at their job when they get it, etc. If you are that sort of person and you look for excellence in your game but do not want to commit professionally to this then it is going to take an upwards of 5-10 years to play at some decent level like club level or USTA sponsored tournaments.
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."[123] Martina Navratilova has included Graf on her list of great players.[123] 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.[124] 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.[125]
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.[23] 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.
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Tie-break sets are now nearly universal in all levels of play, for all sets in a match; however, the tie-break is not a compulsory element in any set, and the actual formatting of sets and tie-breaks depends on the tournament director in tournaments, and, in private matches, on the players' agreement before play begins. Tie-breaks are not used in the final set in the Australian Open for singles before 2019, the French Open for singles, Wimbledon before 2019, or the Fed Cup, nor were they used for final sets in Davis Cup play or the Olympics before 2016. The US Open now uses a tiebreak in the final set, both in singles and in doubles, and was the only major tournament to use a tiebreak in the final set for singles before 2019, but the Australian Open and French Open do use a final set tiebreak in both men's and women's doubles.
Tennis balls were originally made of cloth strips stitched together with thread and stuffed with feathers.[44] Modern tennis balls are made of hollow vulcanized rubber with a felt coating. Traditionally white, the predominant colour was gradually changed to optic yellow in the latter part of the 20th century to allow for improved visibility. Tennis balls must conform to certain criteria for size, weight, deformation, and bounce to be approved for regulation play. The International Tennis Federation (ITF) defines the official diameter as 65.41–68.58 mm (2.575–2.700 in). Balls must weigh between 56.0 and 59.4 g (1.98 and 2.10 oz).[45] Tennis balls were traditionally manufactured in the United States and Europe. Although the process of producing the balls has remained virtually unchanged for the past 100 years, the majority of manufacturing now takes place in the Far East. The relocation is due to cheaper labour costs and materials in the region.[46] Tournaments that are played under the ITF Rules of Tennis must use balls that are approved by the International Tennis Federation (ITF) and be named on the official ITF list of approved tennis balls.[47]
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