DORTMUND, Germany — Jadon Sancho starred as Borussia Dortmund beat Bayern Munich 2-0 in the season-opening German Supercup on Saturday. Sancho scored one goal and brilliantly set up Paco Alcacer for the other as Dortmund secured a morale-boosting victory over its old rival and delivered a statement of intent for the season ahead. Dortmund is
