Dortmund has not found its best performance and many people are talking too much about the positive results they achieved in several previous matches so that finally this week's defeat with a fairly big score occurred, there is no reason for this defeat because Dortmund deserved to lose, they played very badly.
Nuri Şahin must immediately improve, what he has done so far has not shown the best performance for the Dortmund team.
And for Stuttgart I think it also does not prove anything because of this victory, so far Stuttgart has indeed been a strong team but they have not been able to maintain the consistency of their performance.
A team as big as Dortmund, even though they haven't found their best game, they shouldn't lose with a score like that, it's questionable why Dortmund is like that this season. I actually feel Dortmund is worse than last year, in this match they fired two shots on goal throughout the match. Even though Stuttgart is not the first ranked team, or even the top five ranked team, how will Dortmund be when they play against strong teams in the Bundesliga.
Nuri Sahin not only has to improve himself immediately but he also has to be given pressure from the club if he doesn't improve his team immediately he will be fired. Because Dortmund's biggest problem is that they can't handle the pressure, they don't have an answer and give up easily. Then they lose confidence and Dortmund's defense line is very bad in this match, they let the opposing players always have full freedom in the penalty area.
So I think Dortmund should give a warning to their coach to improve himself immediately if he doesn't change immediately he will be fired immediately. Because Dortmund needs a coach who dares to make decisions and can make his players not give up easily.