Cobresal fell to a narrow 0-1 defeat at home against Deportes La Serena in a CHI Liga de Primera match on February 28, 2026. The result was a significant away victory for La Serena, secured by a solitary goal that proved decisive in a tightly contested fixture. The match saw Cobresal, typically strong at their home ground, struggle to break down a resolute La Serena defense. The visitors scored the only goal of the game in the second half, capitalizing on a defensive lapse to take all three points. This result impacted the early-season league table, handing Deportes La Serena a valuable away win while leaving Cobresal to rue missed opportunities in front of their own supporters.