A superb goal from Brahim Diaz helped Real Madrid maintain its dominance of the Madrid derby on Europe’s biggest stage with a 2-1 victory over bitter rival Atletico in the first leg of their Champions League last 16 tie on Tuesday. Atletico has been beaten by the record 15-time European champion in both Champions League final matchups and has won only three of 11 meetings with their city rivals in UEFA competitions. A tense encounter in the Spanish capital was decided by a moment of individual brilliance. Diaz scored the winner for Real Madrid after squeezing past a couple of Atletico players and curling a low strike into the far corner in the 55th minute.