Dortmund's away struggles as Union claims win
Borussia Dortmund slumped to a 2-1 loss at Union Berlin in the Bundesliga as its struggles away from home continued.
In a match that took place just four days after Dortmund's 7-1 demolition of Celtic in the UEFA Champions League – its biggest European win – familiar domestic away woes returned in the German capital.
Union's Kevin Vogt ended a 10-year Bundesliga goal drought after converting a 26th-minute penalty.
Vogt's previous goal was scored on 18 October, 2014, making it a record 275 Bundesliga matches between goals for an outfield player.
Dortmund showed none of the aggression it produced in the win over Celtic and before half-time it conceded another with Yorbe Vertessen's low strike from the edge of the box.
Julian Ryerson pulled a goal back for the visitors just past the hour, but they could not find an equaliser despite applying some late pressure.
The loss means Dortmund drops to seventh place in the standings with 10 points, with Union now one place and one point above it.
Dortmund has now collected just one point from its past five Bundesliga road matches.
It has failed to score more than once in any of those games.