Borussia Dortmund continues to struggle to begin the 14-15 season, losing on Saturday to Hamburg.
Jürgen Klopp is taking responsibility for Dortmund's issues.
"With all our ambitions and goals, that [performance] was well short," Klopp said on Dortmund's official website.
"I put the blame on myself. I am responsible for the preparation and adjustment of the players.
"We are left with seven points. We currently do not look confident going forward."