Vol 4 Chapter 9: Can't touch the ball

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After a brief absence, Roches regained his normal thinking: "I have been paying attention to Zhang Guan's serve, so I didn't see clearly how this ball came, and I didn't even see where the ball was. Has the referee already awarded an ace ball, indicating that it is within the bounds, but will the referee misread it? Do I try to challenge the eagle eye? But if the referee does not make a mistake, I will waste it in vain A chance to challenge."
The Eagle Eye system is also called an instant playback system. It is a computer system used in tennis to track the path of the recorded ball and display a graphical image of the actual path recorded. It can also predict the future path of the ball. The entire system uses eight to ten high-resolution fast cameras to capture the trajectory of the tennis ball at all angles of the court, and then uses 3D technology to simulate the presentation.
This system can help the referee to make a penalty to determine whether the ball is out of bounds. And when the athlete thinks that the referee made a mistake, he can also ask for an eagle eye challenge. According to the rules, each athlete has a total of 3 chances of eagle-eye challenge in each set. If the athlete enters the first 7 rounds, the chance is increased. If the athlete succeeds in the challenge, the challenge opportunity is still retained. If the athlete fails in the challenge, Will lose a chance to challenge.
This technology came out in 2001. The 2006 US Open became the first Grand Slam tournament to be assisted with eagle eyes, and this year's Australian Open was the first to use the eagle eye system. At the same time, the eagle eye system is not available in every course. Only the stadium will be equipped with the eagle eye system, and the small stadium will not spend money to install the eagle eye system.
Today Vodafone Stadium where Zhang Guan and Roches are located, as the second largest stadium in the Australian Open, is of course equipped with an eagle eye system.
Just when Roches was still hesitating whether to challenge the Hawkeye, there was an exclamation in the audience. Everyone's eyes turned to the display card showing the speed of the serve, Roches Looking down, I just saw the number "208".
"Serving at 208 kilometers per hour! It was so fast!" Roches thought of another possibility immediately after he was shocked: "Serving so fast. The referee may not be able to see clearly. And this is also Zhang Guan's first place in tennis. For a serve, if the referee cannot see clearly, in order to encourage the players, it will probably be counted in the circle. In this case, I have a great chance of success in challenging Eagle Eye!"
Roches thought of this and immediately signaled to the referee that he would challenge the Hawkeye system.
The 3D simulation of the ball quickly appeared on the big screen on the field. The ball clearly fell within the boundary, and there was a full distance from the sideline.
"Oops, wasting a chance to challenge. With such an obvious in-bounds ball, if you just focused a little bit, you can definitely see that it is in-bound. How can Zhang Guan send such a fast ball? It must be a coincidence. Roche's face was frustrated, and then he was ready to catch the ball again.
Zhang Guan started his second serve, tossing, swinging and hitting the ball, all in one go.
This time, Zhang Guan still used a flat shot to serve, and Zhang Guan adjusted this time to serve, and the ball he chose to fall closer to the sideline.
"Whoosh!" Roches had a lot of attention this time. He saw the ball coming, and then just about to make a catch, but suddenly realized that his action was late, and the ball must not be caught.
This time. Roches did not hesitate. Since he is destined to not receive the ball, he must carefully see if the ball is out of bounds.
"Out of bounds!" Roches shouted in his heart. However, the ball fell within the bounds.
"Ace, 30-0." The referee broke the score again. However, a ball speed of 207 kilometers also appeared on the display next to it.
"Oh...oh...oh..." There was another startling voice in the audience.
"207 kilometers, as fast as before! The speed of serving twice in a row exceeds 200 kilometers per hour! This is difficult to achieve. Zhang Guan is just a track and field athlete. Why is his arm strength so amazing? He does not seem to have engaged in throwing events. Is this Is it a coincidence? Or is this a method of serving that he is good at?" Roches vaguely felt a little bad.
"The third ball, if he still serves it just like that, it is not a coincidence!" Roches stared at Zhang Guan, and the opposite Zhang Guan made preparations to serve the third ball.
"The same ball has been served twice in a row, and Roches may have found some patterns, this time it is more necessary to pursue the angle." Zhang Guan thought of this and directly aimed at the position of the sideline and issued this ball. .
"Come! The sideline!" Roches rushed quickly, but the quality of Zhang Guan's ball was very good, and Zhang Guan's luck was also very good, the ball just flew out against the sideline.
In the rules of tennis, seeking pressure on the line, even if it is only suppressed a little, can be regarded as in-bound.
"Ace, 40-0." The referee announced the score.
"It's an in-bounds ball! Just by holding the line, Zhang Guan's luck is really good. With such a fast ball, it's a little bit out of bounds. Zhang Guan's serve is the same as the previous two, extremely fast Serve the ball flat, I am afraid the ball speed will be more than 200 kilometers!" Roches looked at the display card. The speed of this ball is 204 kilometers. Although it is slower than the first two balls, the ball speed is more than 200 kilometers. Serve.
"204 kilometers, as it is, like my previous judgment, the first two shots are not coincidences. This is the service method that Zhang Guan is good at! It's incredible, serving speeds over 200 kilometers per hour! But serving speed is not enough, I Now that you have figured out your routine, I can try to catch it next time." Rochester was full of fighting spirit.
Zhang Guan, who was standing opposite, silently recalled the situation of the last ball.
"I used the same method of serving three times in a row, so the last time, Roches had already judged the right point of the ball. If he continues to serve according to the original, he may be able to catch the next ball. See It's time to add some spins!" Zhang Guan decided to serve a top spin this time.
In the top-spin serve, the ball is mainly top-spin, and the side-spin is secondary. Since the ball is up-spinned in the air, it will show an arc-shaped flight path from top to bottom. The arc of this ball is extremely large. , The hit rate is relatively high.
The racket in Zhang Guan's hand hit the tennis ball fiercely, making a clear sound, and then the tennis ball spun out and flew out, crossing an arc in the air.
"The speed of this ball is slower than before! Three consecutive high-speed flat shots, is Zhang Guan no more energy now? This time he can certainly receive it!" Roches rushed up immediately, but then Roches hesitated.
"This ball seems to be out of bounds, well, it must be out of bounds like a flat serve, maybe you don't have to worry about it!" Roche's hesitation, the ball was close to the ground, and at this time Roches also looked It is clear that the tennis ball is spinning at high speed.
"No, it's not a flat serve, it's a top serve!" Roches screamed badly. The topspin is easier to control the landing point than a flat shot. If this is a flat shot, it will definitely go out of bounds, but if this is a topspin, the power of the topspin will cause the tennis ball to fall within the bounds.
Roches made a remedy immediately, but at this time it was too late to go up again. The ball landed in the field and spread quickly. Roches did not touch the tennis ball again.
"Love-game!" The referee announced the result of this round. The word "love" means zero points in tennis terms, and "love-game" means that the opponent won without getting any opponents. One round.
Roches did not win a goal, he was shaved by Zhang Guan.
For four consecutive aces, Roches didn't even hit the ball during the whole game. (To be continued.)
ps: The first chapter is delivered. The new week is also the last week of this month. Please ask for a guaranteed monthly ticket and a recommended ticket. Thank you, the main leader, Wu Ma, for feeding the sheep one hundred thousand points. I have to go to work during the day. Thank you book buddy Red Sleeve for love Tim Hong, smashing a mobile phone for another place, dflzw 10,000 points award, thank you!