After a brief absence, Roches returned to normal thinking: "I had been paying attention to Zhang Guan's serving action just now, so I didn't see clearly how the ball came, and I didn't even see clearly where the ball landed. Is it out of bounds? The referee has already awarded an ACE ball, which means it is in bounds. But will the referee make a mistake? Do I want to 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 Hawkeye system, also known as the instant replay system, is a computer system used in tennis to track and record the path of the ball and display a graphic image of the recorded actual path. 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 tennis balls from various angles on the court, and then simulates and presents them using 3D technology.
This system can help the referee make penalties to determine whether the ball has gone out of bounds. When athletes believe that the referee's penalty is wrong, they can also request a hawk-eye challenge. According to the rules, each athlete has a total of 3 opportunities to challenge in each set. When the game enters the tie-break, one more opportunity will be added. If the athlete succeeds in the challenge, the opportunity to challenge will still be retained. If the athlete fails to challenge, A challenge opportunity will be lost.
This technology came out in 2001. The 2006 US Open became the first Grand Slam event to use Hawkeye to assist, and this year's Australian Open was the first time to use the Hawkeye system. At the same time, the Hawk Eye system is not available in every stadium. Only large stadiums will be equipped with the Hawk Eye system, and small stadiums will not spend money to install the Hawk Eye system.
As the second largest stadium in the Australian Open, the Vodafone Stadium where Zhang Guan and Roaches are today is of course equipped with the Hawkeye system.
Just when Roches was still hesitating whether to challenge the Hawkeye, there was a sudden exclamation from the audience, and everyone's eyes turned to the display board on the side of the court that showed the speed of the serve. Roches I looked along and happened to see the number "208".
"A serve with a speed of 208 kilometers per hour! It's so fast!" After Roches was shocked, he immediately thought of another possibility: "The referee may not be able to see such a fast serve clearly. And this is Zhang Guan's first time in a tennis match. If the referee cannot clearly see a serve, in order to encourage the players, it will probably be counted as in-bounds. In this case, my challenge to Hawkeye has a high chance of success!"
When Roches thought of this, he immediately signaled to the referee and asked to challenge the Hawkeye system.
A 3D simulation of the ball quickly appeared on the big screen on the field. The ball clearly landed in bounds and was still a full finger's distance from the sideline.
"Oops, I wasted a challenge opportunity. Such an obvious inbound ball. If I had paid more attention just now, I would have definitely seen that it was inbounds. How could Zhang Guan hit the ball so fast? It must be a coincidence. !" Roches looked frustrated, and then he was ready to catch the ball again.
Zhang Guan started his second serve, throwing the ball, swinging the racket, and hitting the ball all at once.
This time, Zhang Guan still used a flat serve, and Zhang Guan made adjustments in this serve. The landing point of the ball he chose was closer to the sideline.
"Whoosh!" Roches had to concentrate a lot more this time. He saw the ball flying over, and just as he was about to make a move to catch the ball, he suddenly realized that his move was too late, and the ball would inevitably be caught again. Not here.
This time, Roches did not hesitate. Since he was destined to miss the ball, he had to carefully check whether the ball went out of bounds.
"Out of bounds!" Roches shouted in his heart, but the ball fell inside the bounds.
"ACE, 30-0." The referee announced the score again. However, the ball speed of 207 kilometers also appeared on the display board next to it.
"Oh... oh... oh..." Surprised voices sounded again from the audience.
"207 kilometers, just as fast as before! The speed of serving twice in a row exceeded 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 seems to have never been engaged in throwing events. Could it be that this Is it a coincidence? Or is this the way he is good at serving?" Roches vaguely felt something was wrong.
"It's the third ball. If he still serves like he did just now, just say it's not a coincidence!" Roches glared at Zhang Guan, while Zhang Guan on the opposite side was preparing to serve the third ball.
"I have served the same ball twice in a row. Roches may have found some patterns. This time I have to pursue the angle more." Zhang Guan thought of this, directly aimed at the sideline, and fired the ball. .
"Here it comes! Sideline!" Roches rushed over quickly, but the quality of Zhang Guan's ball was very good, and Zhang Guan was also very lucky. The ball just hit the sideline and flew out.
In the rules of tennis, if the player is pressed on the line, even just a little bit, it is considered inbounds.
"ACE, 40-0." The referee announced the score.
"It's an inbounds ball! It just hit the line. Zhang Guan's luck with this ball is really good. Such a fast ball can go out of bounds if it misses just a little bit. This time Zhang Guan's serve is the same as the previous two, extremely fast. If you hit the ball flat and serve, I'm afraid the ball speed will exceed 200 kilometers again!" Roches looked at the display board. The speed of this ball was 204 kilometers. Although it was slower than the previous two balls, it still exceeded 200 kilometers. serve.
"204 kilometers, it is true. As I judged before, the first two goals are not a coincidence. This is the serving method that Zhang Guan is good at! It is incredible, a serve with a speed of over 200 kilometers per hour! But the speed of the serve is not enough. I Now that I have figured out your routine, I can try to catch the next ball." Roches was suddenly full of fighting spirit.
But Zhang Guan, who was standing on the opposite side, silently recalled the situation of the last ball.
"I used the same serving method three times in a row, so Roches had already correctly judged the landing point of the ball on the last ball. If he continued to serve the same way as before, he might be able to catch the next ball. Look. Time to add some spin!" Zhang Guan decided to serve a topspin ball this time.
In a topspin serve, the ball is mainly topspin, supplemented by side spin. Since the ball is in a topspin state 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 also relatively high.
The racket in Zhang Guan's hand hit the tennis ball hard, making a crisp sound, and then the tennis ball spun rapidly and flew out, drawing an arc in the air.
"The speed of this ball is slower than before! Three consecutive high-speed flat balls, does Zhang Guan have no strength now? I will definitely catch it this time!" Roches immediately rushed forward, but then Roches hesitated.
"This ball seems to have gone out of bounds. Well, the flat serve must have gone out of bounds like this. Maybe we can ignore it!" As soon as Roches hesitated, the ball was already close to the ground, and at this time Roches also looked at it. It is clear that the tennis ball is spinning at high speed.
"No, it's not a flat serve, it's a topspin serve!" Roches secretly screamed. It is easier to control the landing point of a topspin ball than a flat shot. If it is a flat shot, it will definitely go out of bounds, but if it is a topspin ball, the power of the topspin will make the tennis ball fall in bounds.
Roches immediately made a remedy, but by this time it was too late. The ball fell in bounds and spread out quickly. Roches once again did not touch the tennis ball.
"Love-game!" the referee announced the result of this game. The word "Love" in tennis terms means zero points, and "Love-game" means winning without letting the opponent get any points. One round.
Roches did not win a goal, and his head was shaved by Zhang Guan.
With four consecutive ACE balls, Roches didn't even touch the ball in the entire game.
The first chapter is here. It’s a new week and it’s also the last week of this month. Please buy a guaranteed monthly ticket and a guaranteed recommended ticket. Thank you to the leader of the alliance for the huge reward of 100,000 red points for feeding sheep. I have to go to work during the day, so there is no way to update the red chapter. I owe it now, and I will make up two chapters for you on the weekend. Thanks to the book friend Hongxiu Ai Tianxiang, smashing a mobile phone to change places, and the dflzw 10,000-point reward, thank you!
(End of chapter)