The defeat means Dortmund are 13th and must get a result against Shakhtar Donetsk in their final league phase game to have the chance to qualify automatically for the knockouts. For the first time in the competition, the German side have lost multiple games after scoring the opening goal.

Bologna had never won a game in the Champions League before. Borussia Dortmund’s 2-1 loss to the Italian team on Tuesday could be the last for coach Nuri Sahin who has now overseen four straight defeats this year.

Borussia Dortmund coach Nuri Sahin said he still felt the trust from his players but would talk to club bosses after Tuesday's shock 2-1 loss to Bologna in the Champions League that stretched their losing run to four games across all competitions.

The manager is taking the brunt of the criticism for a poor season but issues off the pitch are as significant as those on it

Borussia Dortmund coach Nuri Sahin failed to receive the full backing of managing director Lars Ricken on Tuesday after the 2-1 Champions League defeat at Bologna. The Germans took the lead in Italy but ended up with a fourth straight defeat in all competitions.