Club Atlético Lanús earned a narrow 1-0 victory over Central Córdoba SDE in the first leg of their CONMEBOL Copa Sudamericana knockout tie. A single goal gives the Argentine side a slight but valuable advantage to take into the second leg. The match was a tense, tactical affair with few clear opportunities for either side. The decisive moment came in the second half when Lanús won a free-kick in a dangerous area. The delivery was met by a powerful header that flew into the net, breaking the deadlock. Central Córdoba pushed for an equalizer in the final stages but found Lanús's defense difficult to penetrate. This result leaves the tie finely balanced, with everything to play for in the return match in Santiago del Estero.