Mainz's dream start to the new Bundesliga season continued this evening as they maintained their 100 per cent record with a 2-0 home win over Cologne.
Lewis Holtby struck twice inside the final 20 minutes as Mainz won their fifth straight game to make it 15 points out of a possible 15 at the start of the campaign.
Hannover continued their strong start with an impressive 4-1 win at home against struggling Werder Bremen.
Clemens Fritz's own goal in the 11th minute gave Hannover the lead before a Torsten Frings penalty after 36 minutes levelled things up.
Didier Ya Konan restored Hannover's lead in the 53rd minute before Christian Schulz and Mohammed Abdellaoue added gloss to the scoreline.
The win sees Hannover move up to third place on 10 points while Bremen drop to 12th with just four points from five matches.
Bayern Munich secured only their second win of the season thanks to a last-minute goal from Daniel van Buyten in a 2-1 win at Hoffenheim.
The hosts led after less than a minute with Vedad Ibisevic on target, but Thomas Muller equalised for the defending champions just over an hour into the contest.
Van Buyten stole all three points for Bayern as the game entered stoppage time.The win lifts Bayern to seventh, while Hoffenheim stay second, ahead of Hannover on goal difference.
