Union Saint-Gilloise pulled off a major upset, defeating PSV Eindhoven 3-1 in a UEFA Champions League match at the Stade Joseph Marien on September 17, 2025. The Belgian side, making a rare appearance in the group stage, announced their arrival with a confident and disciplined victory over the more fancied Dutch champions. Union took a shock early lead and doubled their advantage before halftime, stunning the visitors. PSV managed to pull a goal back early in the second half to set up a tense finale, but Union sealed the famous win with a breakaway goal in stoppage time. The match was a testament to Union's organized defense and effective counter-attacking strategy. The result sent shockwaves through the group and immediately made Union Saint-Gilloise a team to watch. The Union coach called it the greatest night in the club's modern history, while the PSV manager admitted his team was not at the races.