Gimcheon Sangmu Football Club pulled off a major upset in the K League 1, defeating reigning champions Ulsan HD FC 2-0 at home on April 27, 2025. In a stunning result, Gimcheon's disciplined and energetic performance completely nullified Ulsan's attacking threats and punished them on the counter-attack. The home side scored a goal in each half to secure a famous victory, with their defensive organization and work rate being particularly impressive. This result sent shockwaves through the league, proving Gimcheon Sangmu's capability to compete with the very best and halting Ulsan's momentum. The three points significantly boosted Gimcheon's standing in the table, while for Ulsan, it was a surprising setback in their title defense. The Gimcheon manager hailed it as a perfect tactical performance, while the Ulsan coach admitted his team was second-best on the day.