Cobresal claimed a valuable 1-0 away victory against Union Espanola in the Chilean Primera División on May 3, 2025. This narrow win on the road was a significant result in the context of the Chilean league title race, showcasing Cobresal's resilience. The only goal of the game came in the second half, likely from a set-piece or a swift counter-attack, as Cobresal's organized defense successfully frustrated the home side's attacks. Union Espanola pressed for an equalizer but found it difficult to break down a disciplined Cobresal backline, with the visitors' goalkeeper making a key late save to preserve the lead. The three points propelled Cobresal up the Liga de Primera table, while Union Espanola's inconsistent form continued. The Cobresal manager hailed his team's fighting spirit, a hallmark of their campaign.