Bayern Munich continued their unbeaten start to the Bundesliga season with a 2-0 win over Freiburg on Tuesday night.
Hannover got back to winning ways at home with a 2-0 win over Augsburg, who have now lost two in a row.
Bayern Munich went 10 points clear in the Bundesliga with a 4-0 win over Augsburg, while Dortmund lost to Hertha Berlin.
Werder Bremen and Hannover shared six goals in a northern Germany derby which ended in a 3-3 draw.
Bayern Munich remain seven points clear at the top of the Bundesliga after a 1-0 home win over Bayer Leverkusen.
Wolfsburg kept up the pressure on Bayern Munich at the top of the Bundesliga with a 3-1 victory at Hannover.
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