Today (27th), the Major League Baseball (MLB) office announced a definitive 10-game suspension for Go Woo-seok, a Triple-A pitcher under the Minnesota Twins' minor league system (brother-in-law of Lee Jung-hoo), on suspicion of using foreign substances in pitching. Go Woo-seok accepted the discipline without filing an appeal.

The MLB office issued a 10-game suspension to Go Woo-seok today, with the discipline retroactively applied from the 26th. This incident, which occurred just days after being demoted from the major leagues, is expected to be a major obstacle in Go Woo-seok's path to returning to MLB.

The incident occurred on the 25th during a home game between the Saint Paul Saints of Triple-A and the Columbus Clippers, a Cleveland Guardians affiliate. Go Woo-seok was found to have foreign substances on his glove during an umpire's inspection before taking the mound as a relief pitcher and was immediately ejected. The glove he used at the time was confiscated by the umpire and sent to the MLB office for investigation.

Go Woo-seok, who entered the American baseball stage in 2024, joined the MLB roster on July 8th after moving through the minor leagues, finally stepping onto the major league stage of his dreams. He made his MLB debut on July 10th against Cleveland, but after appearing in four games total and recording one hold with a disappointing 9.00 ERA, he was demoted back to the minor leagues on July 21st. Less than a week after his demotion, he became involved in this unfortunate incident.

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The use of foreign substances by pitchers to increase spin rate on the ball in order to enhance velocity and the effect of breaking pitches is strictly prohibited in both MLB and the minor leagues. MLB strictly regulates the use of foreign substances, and this discipline against Go Woo-seok once again confirmed that rigorous enforcement is applied without exception to minor league players as well.

With this discipline, concerns have emerged that a "red light" has been turned on for Go Woo-seok's return to MLB. With the difficult MLB debut followed by demotion due to poor performance and now compounded by the unfortunate discovery of foreign substance use, his path to returning to the major leagues appears to be increasingly difficult.

As Korean-American major leaguers experience mixed fortunes, this disciplinary news is expected to bring considerable disappointment to domestic baseball fans. As this incident is added to Go Woo-seok's attempt at a comeback in the minor leagues, his future career path has become even more uncertain, making particular caution by players necessary under MLB's strict regulations.