Union Saint-Gilloise secured a historic 0-1 away victory over Galatasaray in the UEFA Champions League on November 26, 2025, a result that shook up the group standings. The Belgian side's disciplined and courageous performance at the intimidating Rams Park earned them a famous win that kept their own qualification dreams alive. In a match of few clear chances, Union SG scored the decisive goal against the run of play in the second half, capitalizing on a defensive error to slot home. Galatasaray threw everything forward in search of an equalizer, but found the Union defense superbly organized and their goalkeeper in unbeatable form, making several key stops in the dying minutes. The match's focus was on Union's tactical discipline, as they frustrated Galatasaray's attackers throughout. The defeat was a significant setback for Galatasaray's knockout stage aspirations. The Union manager described it as the "biggest win in our club's modern history," while a frustrated Galatasaray coach criticized his team's "lack of creativity in the final third."