“Ryu Hyun-jin’s ‘Ball’ decision ABS is strange? No, ‘Ball’ is correct” Wedge… KBO reveals pitch tracking data: ZUM News

(Xports News Reporter Jo Eun-hye) In response to questions from Hanwha Eagles Ryu Hyun-jin, who expressed disappointment with the ABS (Automatic Pitching System) strike zone, the KBO unusually released data.

KBO said on the 26th, “In response to many inquiries about ABS judgment data for Hanwha Ryu Hyun-jin’s specific pitch against Suwon KT on the 24th and Hanwha Moon Dong-ju’s specific pitch against Suwon KT on the 23rd, the pitch tracking judgment provided by ABS operator Sports2I. “We share data,” he said, releasing some of the game data between KT and Hanwha on the 23rd and 24th.

Ryu Hyun-jin, who started as a starting pitcher on the 24th, did not receive any offensive and defensive help from his teammates and collapsed with 7 hits, 2 walks, 4 strikeouts, and 7 runs (5 earned) in 5 innings, becoming the losing pitcher. The result was a 1-7 complete defeat for Hanwha. On this day, Ryu Hyun-jin, who had maintained his composure despite a series of mistakes by his teammates, changed his expression because of the strike zone. As if the decision was different from the strike zone he had thought and set, Ryu Hyun-jin came down the mound shaking his head.

The next day, Ryu Hyun-jin claimed that there seemed to be a change in the strike zone on the 23rd and 24th. This was what not only Ryu Hyun-jin but most Hanwha players felt. On the 23rd, when Moon Dong-ju took the mound as a starter, Hanwha confirmed that most balls outside the left-hander and inside the right-hander resulted in strikes. Hanwha judged this to be a characteristic of the strike zone at Wiz Park and made a game plan for the 24th. However, on the 24th, Ryu Hyun-jin tilted his head because a ball in a similar position outside the left-hander was judged to be a ball.

On the 24th, Ryu Hyun-jin’s first opponent, leadoff hitter Cheon Seong-ho in the top of the first inning, was ruled as balls for the first three pitches. According to Ryu Hyun-jin’s analysis, three balls were hit in a row on the outside of the left-hander, and if it had been the day before, they should have been strikes. Ryu Hyun-jin also gave walks to Cho Yong-ho and Kim Sang-soo in the top of the third inning, and Ryu Hyun-jin seems to have judged that most of these pitches should have been strikes.

Ryu Hyun-jin threw the first two pitches to the outside to Cho Yong-ho in the third inning, and threw a low ball on the third pitch, but both balls were hit. Both the pitcher and the batter seemed to think the ball to the inside of the 4th pitch was a strike, but he was ruled a ball. In the game against Kim Sang-soo, when all four balls were ruled balls and a straight walk, Ryu Hyun-jin made a gesture toward the dugout as if checking to see if it was a ball.

ABS, which the KBO League is implementing in the first team this year, is based on a tracking system in which a camera installed in a baseball field captures the trajectory of a pitcher’s ball, and a computer determines whether it is a strike or a ball and transmits it as an audio signal to an umpire wearing earphones. The strike zone is set considering the height of the batter. The strike zone height was set to be 27.64% to 56.35% of the batter’s height from the ground, and the width was increased by 2cm on each side from home plate.

To be considered a strike, the ball must pass through the strike zone at both the middle and end surfaces of home plate. By calculating the value of the ball falling due to gravity, the end of the strike zone was set to be 1.5cm lower than the middle.

As questions were raised, KBO released some ABS data on the 26th. KBO explained, “At the bottom of the third inning of the game in which Ryu Hyun-jin pitched, KT Cho Yong-ho’s third ball at bat passed the bottom of the ABS middle zone by 0.15 cm, but did not pass the bottom of the ABS end zone by 0.78 cm, so it was ruled a ball.” did.

In addition, “The 4 pitches of KT Cheon Seong-ho’s at-bat in the bottom of the 4th inning pitched by Moon Dong-ju on the 23rd (strikes), and the 3 pitches of KT Cheon Seong-ho’s at-bat in the bottom of the 1st inning pitched by Ryu Hyun-jin on the 24th (ball ruling) can be seen in the graphic. “The position where it was pitched is different,” he pointed out.