BILBAO, Spain: Athletic Bilbao powered to a convincing 2-0 victory over a flat Atletico Madrid on Saturday in La Liga to close the gap on the top four. Ernesto Valverde’s side, fifth, moved within two points of champions Barcelona, fourth, who visit Valencia later on, and third-place Atletico. Gorka Guruzeta and Nico Williams struck second-half goals to deservedly secure the points for the intense Basques who dominated at a jubilant San Mames. Atletico have lost four games in La Liga this season, each away from home, while winning all eight matches they have played at their Metropolitano stadium. “I think we played badly,” Atletico goalkeeper Jan Oblak told Movistar. “We cannot play like this, one way at home, another away, you can’t win titles like this, you can’t win leagues...