The Latest 12 Basic Rules of Tennis Any Tennis Player Need To Remember (Part 2)
Article 2 – Rules of Fixed Equipment On Tennis Courts
Tennis courts are required as follows.
– Nets, net poles, support piles, wire mesh stretch, scraper nets
– Walls/screens around the yard
– Fixed steps/seats or mobile around the yard
– About the number of tennis referees: On a normal playing field, there will be a referee, a line referee and a person who picks up the ball when in the correct position is also considered a fixed device. However, there are the highest level matches, there can be up to 11 referees on the field at the same time.
Article 3 – Rules of Tennis Ball Competition
The ball must have the same exterior, covered with a felt layer and be yellow or white. If there are seams, must not reveal stitches. The ball has a diameter of 6.35 cm to 6.67 cm, the weight is from 56 g to 59.4 g and the bounce is from 134, 62 cm to 147, 62 cm when dropped from a height of 254 cm down.
Type 1 – Fast speed: forward distortion greater than 0.495 cm and less than 0.597 cm; later deformation is greater than 0.749 cm and less than 0.965 cm with 8.1165 kg impact force on the ball
Types 2 and 3 – Medium and slow speeds: forward distortion greater than 0.559 cm and less than 0.737 cm; the later deformation is greater than 0.800 cm and less than 1,080 cm when the impact force is 8,165 kg.
When playing at an altitude of over 1,219 m above sea level, two additional types of balls can be used are as follows.
– The first type has the same rules as described above, except the rebound value is within 121.92 cm to 134.62 cm and has an internal pressure greater than the outside pressure. This type is often called compression ball.
The second type also has the specifications described above, except for the bounce value between 134.62 cm and 147.32 cm and the internal pressure equivalent to the outside pressure. This type of ball is often called a ball with zero compression or a ball without compression.