I was born in Colombia but lived all my life in Venezuela. I got a tennis scholarship at Oklahoma, where I got my bachelor degree in Psychology. I worked as head pro at Club Nautico De Maracaibo in Venezuela for 23 years where I made lots of friends and made a lots of great players! 8 players I have taught played tennis for colleges here in the USA. I am a real friendly person and very serious about tennis. Sincerely yours, Jose
The other type of tiebreaker Van Alen introduced is the "12-point" tiebreaker that is most familiar and widely used today. Because it ends as soon as either player or team reaches 7 points – provided that that player or team leads the other at that point by at least two points – it can actually be over in as few as 7 points. However, because the winning player or team must win by a margin of at least two points, a "12-point" tiebreaker may go beyond 12 points – sometimes well beyond. That is why Van Alen derisively likened it to a "lingering death", in contrast to the 9-point (or fewer) "sudden-death tiebreaker" that he recommended and preferred.
Throughout most of lawn tennis' history, most rackets were made of laminated wood, with heads of around 65 square inches (420 cm2). A small number of them were made of metal, such as a 1920s racket by Dayton. Some, rarely, also had metal strings. In the late 1960s, Wilson popularized the T-2000 steel racket with wire wound around the frame to make string loops, after having purchased the design from René Lacoste, who produced the racket first in a more limited run. It was popularized by the top American player Jimmy Connors and was also, prior to Connors using it, by Billie Jean King in her early career. Many players said it lacked control but had more power, when compared with wood frames of the period. Connors used the rarer "firm" model that had additional throat welds to increase its stiffness. In 1968 Spalding launched an aluminum racket, called The Smasher. Aluminum, though lighter and more flexible than steel, was sometimes less accurate than wood. The biggest complaint, however, was that metal rackets caused strong cases of tennis elbow, especially the kind that had holes for the strings directly in the frame, rather than using an external wire wrapper, as in the T-2000. Because of that drawback in particular, most of the top players still preferred to use wooden frames.
The tiebreak is sometimes not employed for the final set of a match and an advantage set is used instead. Therefore, the deciding set must be played until one player or team has won two more games than the opponent. Of the major tennis championships, this now only applies in the French Open. In the US Open, a tiebreak is played in the deciding set (fifth set for the men, third set for the women) at 6–6. Starting in 2019, in Wimbledon, a tiebreak will be played if the score reaches 12–12 in the final set. In the Australian Open, a "first to 10" tiebreak is played in the deciding set if it reaches 6–6. (When the tiebreak was first introduced at Wimbledon in 1971, it was invoked at 8–8 rather than 6–6.) The US Open formerly held "Super Saturday" where the two men's semi-finals were played along with the women's final on the second Saturday of the event; therefore a tie-break was more prudent where player rest and scheduling is more important.
Tennis is played on a rectangular, flat surface. The court is 78 feet (23.77 m) long, and 27 feet (8.2 m) wide for singles matches and 36 ft (11 m) for doubles matches. Additional clear space around the court is required in order for players to reach overrun balls. A net is stretched across the full width of the court, parallel with the baselines, dividing it into two equal ends. It is held up by either a metal cable or cord that can be no more than 0.8 cm (1⁄3 in). The net is 3 feet 6 inches (1.07 m) high at the posts and 3 feet (0.91 m) high in the center. The net posts are 3 feet (0.91 m) outside the doubles court on each side or, for a singles net, 3 feet (0.91 m) outside the singles court on each side.
Tennis is played on a variety of surfaces and each surface has its own characteristics which affect the playing style of the game. There are four main types of courts depending on the materials used for the court surface: clay courts, hard courts, grass courts and carpet courts. The International Tennis Federation (ITF) lists different surfaces and properties and classifies surfaces into one of five pace settings: