FC Seoul faced a critical setback in their quest to advance to the quarter-finals of the AFC Champions League (ACL) following a 0-1 defeat against Japan's Vissel Kobe in the first leg of the round of 16, held at the Seoul World Cup Stadium. The loss puts immense pressure on Seoul, which must secure a victory in the second leg in Kobe to keep their hopes alive for advancing. Coach Kim Ki-dong's team entered the match with aggressive intentions, employing a 4-4-2 formation, making several attempts to score but failing to capitalize on their opportunities.

The decisive moment came in the first half when Vissel Kobe's Matheus Thuler scored a crucial header in the 23rd minute, capitalizing on a defensive error that saw the ball deflect into position. Despite having a chance to equalize in the second half with a penalty kick, FC Seoul could not convert as their shot was saved by the opposing goalkeeper, leading to frustrations for the team. The missed opportunities to score left Seoul fans anxious about the team's prospects in the upcoming match.

In the post-match press conference, Coach Kim expressed determination, assuring that the team would prepare intensively for the second leg in Kobe. His remarks highlighted the team's refusal to give up on a quarter-final ticket, indicating that they are still hopeful of turning the situation around. The return leg on July 11 is now crucial for FC Seoul to keep their AFC Champions League ambitions alive.