Lamine Yamal wrapped up a statement win 13 minutes from time to surely put the quarter-final tie beyond the reach of Dortmund ahead of next week’s return fixture at Signal Iduna Park. Substitute Maximilian Beier thought he had grabbed a late consolation for Niko Kovac’s men, only to see his effort chalked off for offside on a miserable night to forget for last season’s losing finalists.