(CNN) -- Atletico Madrid recorded their first victory in the league over Real Madrid this century with a 1-0 victory at the Bernabeu on Saturday. A first half strike by Brazilian striker Diego Costa maintained Atletico's 100% start to the La Liga season and secured a first league win against Real, home or away, since the 1999/2000 season. The game's only goal came in the 11th minute when Costa gathered in Koke's inch-perfect through ball before executing a crisp side-foot finish past keeper Diego Lopez. Real had their chances to equalize -- Karim Benzema going close with headers in the 23rd and 26th minute -- but Atletico's defense held firm as the first half came to a close.
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Atletico beat Real in Madrid league fixture for first time since 1999
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Diego Costa's first half strike maintains Atletico's 100% start to league season
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Costa should have doubled Atletico's lead in the 60th minute but scuffed his shot after being sent through one-on-one with goalkeeper @placeholder before Real cleared their lines.