Before and during the open era, Rod Laver remains the only male player in history to have won the calendar year Grand Slam twice in 1962 and 1969  and also the calendar year Professional Grand Slam in 1967. More recently Björn Borg and Pete Sampras were regarded by many of their contemporaries as among the greatest ever. Andre Agassi, the first of two male players in history to have achieved a Career Golden Slam in singles tennis (followed by Rafael Nadal), has been called the best service returner in the history of the game. He is the first man to win grand slams on all modern surfaces (previous holders of all grand slam tournaments played in an era of grass and clay only), and is regarded by a number of critics and fellow players to be among the greatest players of all time. However it must be noted that both Rod Laver and Ken Rosewall also won major Pro Slam tournaments on all three surfaces (grass, clay, wood) Rosewall in 1963 and Laver in 1967.
In most professional play and some amateur competition, there is an officiating head judge or chair umpire (usually referred to as the umpire), who sits in a raised chair to one side of the court. The umpire has absolute authority to make factual determinations. The umpire may be assisted by line judges, who determine whether the ball has landed within the required part of the court and who also call foot faults. There also may be a net judge who determines whether the ball has touched the net during service. The umpire has the right to overrule a line judge or a net judge if the umpire is sure that a clear mistake has been made.
Keeping in mind that you will have to dedicate a lot of time each week with a private preferably to achieve this level. But if you have the money and mind to do this then you can do this no matter what age you essentially start at because you can play tournaments at any level except the pro ATP or WTA level because you need sponsors and dedicate time fully for that.
For length, 21 to 26 inches (53 to 66 cm) is normally the junior racket range, while 27 inches (69 cm) is for stronger more physically-mature players. Some are also available at lengths of 27.5 to 29 inches (70 to 74 cm). The Gamma Big Bubba was produced with a 32 inches (81 cm) length but it is no longer legal in that length. Gamma responded by changing the length of the grip portion of the racket, to continue sales. The length restriction was based on the concern that such long rackets would make the serve too dominant, but that concern has never been objectively supported with testing. Moreover, some players, such as John Isner, are much taller and have longer arms than average professionals (and especially low stature ones), giving them a much larger advantage in terms of height for the service than is possible with several inches of racket length. This makes the length restriction more questionable. Finally, the professionals who nearly always choose to use the longest rackets typically choose them because they use two-handed groundstrokes for both forehand and backhand, using the extra length to improve their reach. An example is Marion Bartoli. As this type of player is not dominant in the sport, or even close to being average in terms of per capita representation, the length restriction seems even more unnecessary. Despite Prince's attempt to market longer length "longbody" rackets in the 1990s, standard length remains the overwhelming choice of players, further negating the argument in favor of the length restriction. When most players who choose to use a longer racket than 27 inches (69 cm) choose one, they typically only use a 27.5 inches (70 cm) model, rather than one approaching 30 inches (76 cm). Longer rackets were introduced by Dunlop
Choosing the right tennis racquet can help you play your best on the court. No matter what type of player you are, there are racquets of all shapes and sizes, and one is sure to match your needs and help you to take your gameplay to the next level. You can find a range of new, used, and pre-owned tennis racquets on eBay that you'll be excited to carry onto the court, including ones from brand names such as Babolat, Wilson, Prince, and Head.
Historians believe that the game's ancient origin lay in 12th century northern France, where a ball was struck with the palm of the hand. Louis X of France was a keen player of jeu de paume ("game of the palm"), which evolved into real tennis, and became notable as the first person to construct indoor tennis courts in the modern style. Louis was unhappy with playing tennis outdoors and accordingly had indoor, enclosed courts made in Paris "around the end of the 13th century". In due course this design spread across royal palaces all over Europe. In June 1316 at Vincennes, Val-de-Marne and following a particularly exhausting game, Louis drank a large quantity of cooled wine and subsequently died of either pneumonia or pleurisy, although there was also suspicion of poisoning. Because of the contemporary accounts of his death, Louis X is history's first tennis player known by name. Another of the early enthusiasts of the game was King Charles V of France, who had a court set up at the Louvre Palace.