BERLIN — Borussia Dortmund slumped to a 4-2 loss at promoted Holstein Kiel on Tuesday, piling the pressure on coach Nuri Sahin after the team’s worst opening half to the Bundesliga for 10 years.
The 36-year-old Sahin has vowed to take "consequences" in response to recent struggles, but uncertainty remains the defining feature of Dortmund's current state. While club leaders are publicly ...