The loss meant Dortmund dropped to seventh place in the standings on 10 points, with Union now one place and one point above them

Borussia Dortmund slumped to a 2-1 loss at Union Berlin in the Bundesliga on Saturday, only days after its 7-1 demolition of Celtic for its biggest European win.

Vertessen 45'After thrashing Celtic in midweek, Borussia Dortmund were brought firmly back down to earth as they fell to a 2-0 defeat to Union Berlin. Nuri Şahin's side

After thrashing Celtic in midweek, Borussia Dortmund were brought firmly back down to earth as they fell to a 2-0 defeat to Union Berlin. Nuri Şahin's side looked pedestrian in the first half, and were punished just before the half hour mark when Nico Schlotterbeck conceded a penalty which veteran defender Kevin Vogt confidently dispatched.