‘Check Swing Controversy’ KBO, read from 19th… Notice of regulations to each team and athlete

(Sports Seoul | Reporter Lee So -young) The Korea Baseball Commission (KBO) will conduct a check swing video reading for all league games from the 19th.

The check swing video reading was decided by the 5th Executive Committee in 2025 on July 22. This is the KBO’s explanation that it improves the accuracy of the judgment and enhances fairness to increase the satisfaction of the field and fans.

The criteria are the same as the standards applied in the Futures League. When the batter is swinging the bat with the intention of hitting the pitcher’s pitch, the referee decides to be a swing strikes when the angle of the bat (determined by the end of the bat) goes in the direction of the pitcher rather than the baseline that is parallel to the front of the home plate.

If the angle of the bat is an angle of 90 degrees in the other, it is determined to be a swing, and the following is not a swing. Whether the bat has crossed the front of the home plate, the handle position and the body rotation are not considered in the judgment, and the angle at the end of the bat exceeds the baseline. For reference, the bunt attempt is not eligible for check swing video readings.

Reading opportunities are given two times per team, separately from the existing video reading vaporization. Maintain opportunities when reversing. In addition to the overtime, reading opportunities are added once in addition to the remaining opportunities.

The attack team can only request reading when the attack team is judged and the defensive team is judged in Northwing. All check swing video readings are only done by KBO camera images, not relay cameras. If one of two check swing video cameras in the stadium due to equipment failure, it is not possible to use it. However, if you can use two cameras after measures, you will immediately resume reading.

Reading requests should be made by the supervisor, and within 30 seconds of the decision (10 seconds for the outcount where the inning ends). Even within the time limit of reading request, it is impossible to request a video reading request after the next pitch of the play. In addition, if you do not find a basis for reversing the decision within three minutes, the centrifugal will be maintained.

As a result of the checking swing video reading, if the runner rearrangement is needed, the judge team leader will finally decide with the advice of the reading center by applying the runner -up regulations of the video reading regulations.

If the catcher is not completely insisted on, the reader is ready to swing and strikes out, but this is a better striking situation, but the other is declared even if the tag for the batter, or the first base throwing and the base touch is not performed. This is the same as the check swing challenge regulations in the US minor league.

However, if the ball out and the ball enters the Bolded area, the safety truth is applied to all runners, including the batter, to give the safety truth (1 base).

In addition, the principle is to recognize the play after the initial judgment as a normal play. However, if the judgment team leader judges that the reversal of the decision did not just adjust the ball count, but influenced the following play, the judge’s leader is based on the situation when the decision is correct from the beginning.

Considering the damage, disadvantages, or excessive interests due to the wrong decision, it is possible to relocate the runner’s position based on the advice of the reading center. In this case, the base that the runner did not actually reach in the play before the reversal does not allow the truth. However, the exception is that the base runner must move to the next base due to the subsequent runners.

Most of all, check swing video reading is also applied to the postseason with the same standards and rules.

KBO went through a test period to analyze check swing cases in the second half of the game to stabilize the system of each stadium. In addition, as the check swing video reading is a new regulation that is introduced during the season, the enforcement regulations were explained directly to each team and announced to the club and the team.

In addition, meetings were held for referees and video reading centers to reduce confusion in the field and to smoothly read. sshong@sportsseoul.com