Kevin-Prince Boateng scored his first goal for Schalke 04 on Saturday to earn his team a 1-0 win at Mainz 05 and champions Bayern Munich beat Hanover 96 2-0.
Mario Mandzukic and Franck Ribery scored in the second half to put Bayern on 13 points from their first five games.
Stefan Kiessling struck twice in Bayer Leverkusen's 3-1 victory over VfL Wolfsburg and two goals from Vaclav Kadlec helped Eintracht Frankfurt win 3-0 at Werder Bremen, who had Franco di Santo sent off after only 26 minutes.
Photograph: Kai Pfaffenbach/Reuters
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