Bayern Munich continued their unbeaten start to the Bundesliga season with a 2-0 win over Freiburg on Tuesday night.
Mainz's winless run in the Bundesliga stretched to eight games as they came away from Cologne with just a point.
Bayern Munich went 10 points clear in the Bundesliga with a 4-0 win over Augsburg, while Dortmund lost to Hertha Berlin.
The Bundesliga's two most out-of-form teams played out a 1-1 draw as Stuttgart salvaged a point at Mainz.
Hamburg claimed a crucial 2-1 win over Mainz in the Bundesliga on Sunday, while Eintracht Frankfurt beat Werder Bremen
Hamburg moved out of the Bundesliga's bottom three with a comfortable 2-1 win over Mainz
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