It is 3 feet (0.91 meter) far above the ground at the center and 3.6 feet (about 1 meter) at the sideline posts. On either side of the net, 21 feet (6.4 meters) from it and parallel to it, are the service lines. A centerline between the service lines and parallel to the sidelines creates two service courts, each 13.5 feet (about 4 meters) wide. Common fabrics are cotton (this is used due to its softness and breathability), nylon (this one is used because of its durability) and spandex (due to its elasticity). The most popular brand of spandex is lycra. Also a necessary part of choosing skirts is the buyer's personal style. A serious woman, for instance would not want to go for the loud colored-fabrics or cuts that are sure to turn every head. For the very first robin round, a match was made between circuit leaders Andy Roddick and Ivan Ljubicic, which had thirty five aces. The ATP Tennis auction for charity was held at the Stadium of Qi Zhong and also featured banners and t-shirts autographed by various ATP Tennis stars. Roger Federer s shirt fetched the highest bid that amounts to twenty eight thousand RMB. For you tennis players out there, here are some tips you should have in mind when dressing to play tennis. If your prefer comfort and style, choose a light colored fabric for your tennis outfit. Light colors reflect light, making you absorb heat less. This is why traditionally, tennis players wore all-white outfits. In addition, tennis elbow is also evident in those engaged in playing golf, and fencing, to name a few. Symptoms and Signs Difficulty to hold, squeezes, or clasp things Point softness at or around area of the lateral or medial elbow muscles Forearm muscle stiffness Soreness, stiffness, or not enough elbow and hand action Not enough forearm useful power The disorder is treated by avoiding stress, or in severe cases, by immobilizing the elbow. The necessary specifications for tennis racquets are: Size of the head Length Weight (while without strings) Composition Weight of the 'swing' Balance Width of the beam Stiffness Level of power Speed of the 'swing' Pattern of the strings Tension of the strings Now, think of the many available tennis racquets in the market today.