Mexico defeated South Korea 1-0 in a World Cup match held at Guadalajara Stadium on November 18th. The game represents a setback for South Korea’s campaign in the tournament’s group stage. Details regarding the goal scorer and specific match events were not provided in the source text. This result impacts South Korea’s chances of advancing to the knockout rounds, depending on outcomes of other matches in their group. The match took place at Guadalajara Stadium, indicating it was part of the tournament’s group stage schedule. Further reporting would be needed to analyze the game’s implications and South Korea’s overall World Cup prospects. The provided information is limited to the final score and location.