Dortmund's performance was not very good, I thought they would score much easier and win with a few goals difference. Even though they dominated the game, they could only score one goal. It might be enough to get 3 points but I think they could have played better. Next is to win the Champions League match 
I dont know what is wrong with this team,they barely won against Werder Bremen that is awful this season. Dortmund dosent look good at all this season and i think something needs to change really quick if they want a chance to win the title this season.