Now, fans can check not only the speed of the ball but also the movement and rotation speed of the ball.
The numbers have begun to be numerically calculated, including swing of batters, speed of fielders and strikeouts. However, are they all real? Is it right that Korean baseball, like the Major League Baseball, is checking the exact number? This paper examined the KBO League data measurement issues that have recently emerged through the introduction and review of the emergency tracking data inspection series.
<Sang> Why was Won Tae-in's restraint low by 4~5km/h
<Ha> 99.9%? Is ABS really accurate
Which one is the "real number".
The special match between MLB and KBO League teams held at Gocheok Dome last month was an opportunity to check the pitching capabilities of Korean young guns. Won Tae-in (Samsung Lions) took the mound against the San Diego Padres and posted an average fastball speed of 146.9 kilometers/h (maximum 149.5 kilometers/h based on trackman). Kim Taek-yeon (Doosan Bears) drew attention as his fastball speed was higher than that of MLB pitchers who took the mound on the same day. All of their pitching data were released to the world through Baseball Servant, the official record website of MLB.
Unlike MLB, KBO League has limited data release. Clubs use equipment such as PTS, Trackman, and Hawk Eye, but only a few of them are open to the public. You can only check some PTS measurement results through Sports2i's website.
However, the numbers are slightly different. Based on PTS last year, Won recorded an average speed of 143.8 km/h on his fastball. The speed is more than 3 km/h lower than that of his base ball service. The PTS measurement results may be worrisome for a pitcher whose speed is "spec." Won already complained on his social media last year that his average speed is 4 to 5 km/h per game is low.
PTS and Hawk-Eye use optical and trackman use radar technology, but the speed measurement points are different. Trackman measures the pitcher's speed in other words, 50 feet (15.24 meters) from the home plate.
KBO League club analyst A said, "Usually, what we often call a speed limit refers to the moment the ball leaves the pitcher's hand, or speed per second. PTS cannot measure the point. If a pitcher's average extension is about 1.8 meters, the difference between the point where he leaves the hand and the point where he measures PTS is about 1.5 meters. This is the result of the numerical difference."
Why don't we adjust the numbers and unify them? Sports2i is negative. After this newspaper inquired through the Korea Baseball Organization (KBO), Sports2i said, "Compared with PTS and other systems is difficult for the company to grasp, and it is difficult to disclose details about the system algorithm."
Adjustment itself is also difficult. For example, Moon Dong-joo (Hanwha Eagles) recorded the highest speed of ball speed (160.1 km/h) in the history of Korean pitchers last year, which was measured 161.1 km/h by a Hawkeye at the time. On the other hand, Ahn Woo-jin (Kium Heroes) recorded 158.2 km/h based on PTS in the same month, while his trackman recorded 159.8 km/h. "Even though Ahn and Moon's pitches have the same speed, Moon Dong-joo's PTS speed is higher. This is because Moon's extension is longer than Ahn's, so he is faster at 50 feet."
It is not necessary to measure the speed of a ball. "Hawkeye has the same optical technology, but it measures when a ball leaves its hands like a trackman," A said. "The two companies are not unique. They measure the speed of a speed gun in the first place. All equipment is the same, but only the PTS shows relatively low speed at different points."
Analysts B asked back, "You might think a 50-foot point closer to the batter is useful, but for that purpose, it's better to have a trackman and a Hawk-Eye that can also check the dependence." Experts pointed out that the speed of rotation provided by the PTS is also not accurate. It was only a reverse calculation based on the ball's speed and movement, and it is different from the state-of-the-art equipment that actually measures and provides it.
After all, this is the limitation of the old technology. "The key point is not whether it is optical or radar," a team analyst C said. "The distance from the pitcher's plate to the home plate is 18.44 meters, but only 10 to 15 meters can be tracked by the three cameras installed by the PTS."
"The PTS was introduced by MLB in 2006," A said. "It is nonsense to combine the PTS with Hawkeye just because it is an optical device. While Hawkeye is a foldable smartphone, the PTS is like a Lollipop folder phone that was released in 2009. It means that the two will be grouped together with the same folder phone." https://www.totositenet.com/
Присоединяйтесь к ОК, чтобы посмотреть больше фото, видео и найти новых друзей.
Нет комментариев