The theme is that the caddy system is not well understood. Let me feel the theme. The main reasons are as follows: 1 caddy is an indispensable player on 1920 court, and caddy was introduced from Wimbledon. Boys are selected from the school. Female players were introduced to Wimbledon in 1977. Due to the nature of this sport, it is necessary to retrieve loose tennis balls quickly and send them to the server. Each stadium has a well-trained caddy/girl phalanx, and their positions and movements are designed to maximize efficiency without interfering with active competition. In addition to handling balls, caddies can also provide other help to athletes, such as delivering towels and drinks. Https://en.wikipedia.org/wiki/ball_boy simply said that caddies were introduced to save unnecessary time in picking up the ball and provide other services for players, such as towel handling. Is it important to help catch the ball? I think this is very important. It can save energy and time for athletes. Nadal and Djokovic scored 335 points and 277 points respectively in the men's singles semi-final of the 20 13 French Open. I wonder if the subject has ever played tennis. If I want to pick up more than 400 balls in four and a half hours, I will be really exhausted. I can't stand it anyway. In terms of time, in order to speed up the process and reduce the time between balls, it is essential for caddies to send the ball. As for towels and umbrellas, it is easy to understand that Nadal's face is always covered with sweat and the tennis court is scorching in the sun. Caddy is a volunteer. How to choose a caddy? There are many ways to choose boys and girls to take part in the competition. Many competitions, such as Wimbledon and Queen's Club Championship, are selected from or applied for by the school, and the selection in the school through the championship has to go through some selection and testing. In other competitions, such as the Australian Open and the US Open, there are advertisements and open trials. Applicants must pass the physical fitness assessment. Besides health and endurance, the ability of concentration and vigilance is also essential. In short, cadres come from school selection and public election. Katie has no salary. It belongs to the whole volunteer system. Generally speaking, caddies should be the luckiest part of the volunteer system. All three cadres are welfare benefits! Theme, can't you see it? Oz, do you know how expensive tickets for the Grand Slam are? ! ! You know warm tennis tickets are hard to buy, even if you have money! ! ! Do you know how crazy it is for fans to wait for players' autographs at the training ground? ! ! Compared with fans sitting in front of computers and televisions all over the world, fans who spend a lot of money or can only sit in their own seats, and players who stand in the same stadium and may get in touch with players at any time are not the luckiest people! ! ! Not to mention the revenge experience of caddies inviting them to rest together, such as Dede and Siavoni holding caddies to comfort them (yes, they are old and not beautiful, but they are grand slam champions after all). Didn't you see how happy the caddy was laughing? If I can be Li Na's caddy, I think I will wake up laughing next year. Generally speaking, this is a great benefit for fans. Traditionally, this welfare is to spread tennis to teenagers. Of course, caddies are not just children now. There is a saying in Baidu Encyclopedia that this is the legacy of tennis and aristocratic sports. But I think, based on the above considerations, this system still exists. As for whether the theme is cold or not. I don't think children of this age are that vulnerable. Children abroad are usually in better health.