The rules of tennis Single category competition (The singles Game)1 Court (The Court)Pitch must be rectangular, length 78 feet (23.77 m) wide and 27 feet (8.23 meters) and will be divided into two parts by a mesh (Net), which is hanging down from the rope stretched mesh (Cord or Metal Cable) diameter not exceeding 1/3 inch (0.8 centimeter) at the end of a rope stretched mesh must be stretched to head poster?The two towers poster through aphat (Post) must be a square pillar. Aspect does not exceed 6 inches (15 cm) or a round pole size diameter no more than 6 inches (15 cm) These two poles must not be higher than the top of the rope stretched mesh 1 inch beyond the midpoint of the two pillars and the need to stay away from the side of each 3 feet (0.914 m) The height of the mast, the upper part of the slack rope mesh are 6 ft 3 Stadium floor inches (1.07 m)In a single-class tournament, which uses a pair of mesh and types (see the rules for article 34) will have to adjust the mesh, 6 ft 3 inches high (1.07 meters) by adding two poles. This added antenna called "crutches mesh" (Singles Sticks) This pillar must be a square pillar. No more than 3 aspect inches (7.5 cm) or a round pole size diameter no more than 3 inches (7.5 cm) Midpoint of the crutches mesh must stay away from single category per above 3 feet (0.91 meters).Mesh stretched to full shut out Sao, both between. The mesh must be small enough to not let the ball get through tennis. Match the center of the mesh must be higher from the ground 3 feet (0.91 meters) and must have a stretched mesh bars (Strap) khaokwang color does not exceed 2 inches (5 centimeters) anchored to the floor on each side of the mesh, mesh-covered bar must have at least one (Band) cover the slack rope white mesh and the top edge of the mesh. This tongkwang not be less than 2 inches (5 cm) and must not be more than 2 1/2-inch (6.3-centimeter) there must not be any advertising on a mesh-covered bar, mesh, mesh, or crutches.The end of both sides is called "senlang" (Base-Line) T-line side of the stadium, both sides called "side-line" (Side-Lines) A line drawn parallel with mesh on both sides and a side mesh from 21 feet (6.40 meters), called "lines served" (Service Lines) a straight line is drawn from the midpoint of a line parallel to the side lines on one side, served to the midpoint of the line served the other side. Called "lines served middle" (Centre-Service-Line) This line tongkwang 2 inches (5 cm) and divide the space on each side of the mesh between the two lines served with a side of equal section. Each section is called a "Court served" (Service-Courts) senlang on both sides will be halved by the middle (Centre Mark), which is a stroke, touch, and is perpendicular to senlang into the stadium with the line served the Middle middle length 4 inches (10 centimeters) wide and 2 inches (5 cm) Other lines also tongkwang at least 1 inch (2.5 cm) and no more than 2 inches (5 cm) unless senlang atkwang has no more than 4 inches (10 cm) The width and size of different parts of the course must be measured from the outside edge of each line. All paths must be the same color.Ads or any object that is on the back of the Court must not be white, yellow, light may be used if they do not interfere with the sight of players ad that is stuck to the Director's Chair line, sitting in the back of the airport. No white light may be used if they do not interfere with the eyes of the players.Note in the final tournament of the country (Davis cup) or final competition organized by the International Tennis Federation. Have been defined to require space after each line into no less than 21 feet (6.4 meters), and an area next to each side of the stadium, no less than 12 feet (3.66 meters) Director Chair lines must be placed at the back pitch within less than 21 feet, and the side of the pitch in no more than 12 feet, but is slated to have no more than 3 feet. 2 what is a fixed installation (Permanent Fixtures)What is a fixed installation of tennis does not mean crutches mast mesh netting? The slack rope mesh net stretched bar Only mesh-covered bar, including a blocking back, and side to side courts. The chairs are installed with the amphitheatre or at the airport, as well as the period in which those sitting on those things. Other installation tools, which are around and above the airport. Organisers (Umpire), a member of the Internet (Judge Net-Cord) the default track feet (Footfault Judge) (Lonesmen), the line Director and children keep the ball (Ball Boys), as well as functional.Note: according to the intention of these rules, the term "the judge" means a judge and all the organisers helper.3 tennis ball (The Ball)ผิวนอกของลูกจะต้องกลมเรียบเสมอกันทั้งลูก ลูกต้องมีสีขาวหรือสีเหลือง ถ้ามีรอยต่อจะต้องไม่เป็นตะเข็บ ลูกต้องมีเส้นผ่าศูนย์กลางมากกว่า 2 1/2 นิ้ว (6.35 เซนติเมตร) แต่น้อยกว่า 2 5/8 นิ้ว (6.67 เซนติเมตร) มีน้ำหนักมากกว่า 2 ออนซ์ (56.7 กรัม) แต่น้อยกว่า 2 1/16 ออนซ์ (58.5 กรัม) การกระดอนของลูกเมื่อทิ้งลงจากที่สูง 100 นิ้ว (254 เซนติเมตร) บนพื้นคอนกรีตจะต้องกระดอนสูงกว่า 53 นิ้ว (135 เซนติเมตร) แต่ต่ำกว่า 58 นิ้ว (147 เซนติเมตร) เมื่อกดปลายทั้งสองข้างของเส้นผ่าศูนย์กลางของ ลูกด้วยกำลัง 18 ปอนด์ (8.165 กิโลกรัม) ผิวของลูกจะยุบเข้าไปมากกว่า 0.022 นิ้ว (0.56 เซนติเมตร) แต่น้อยกว่า 0.290 นิ้ว (0.75 เซนติเมตร) ส่วนที่โปร่งออกมาต้องมากกว่า 0.350 นิ้ว (0.89 เซนติเมตร) แต่น้อยกว่า 0.425 นิ้ว (0.08 เซนติเมตร) ตัวเลขเหล่านี้คิดเฉลี่ยจากการกดลูกในแนวแกนทั้งสามของลูก และค่าที่ได้จากการกดในระหว่างแกนที่ต่างกันคู่หนึ่งต้องไม่ต่างกันมากกว่า 0.030 นิ้ว (0.08 เซนติเมตร)หากมีการแข่งขันในสถานที่อยู่สูงจากระดับน้ำทะเลเกิน 4,000 ฟุต (1,219 เมตร) อาจใช้ลูกเพิ่มได้อีกสองแบบ-The first model looks like the above, but there must be raengkradon higher than 48 inches and under 53-inch internal pressure must be higher than the pressure outside. This tennis ball known as the tennis ball with pressure (Perssurised)-The second looks similar to these, but must be raengkradon higher than 53 inches lower than 58 inches would require internal pressure with the external pressure and the punishment must be taken at the race location and approximately 60 days or more, so that the condition is equal to the air. This is called a tennis ball tennis ball pressure wireless (Non Pressurised)
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