Bayer Leverkusen maintained their unbeaten record and moved to the top of the Bundesliga after an easy 4-0 victory over Nurnberg.

The game was effectively over by the interval thanks to an early Toni Kroos effort, a Simon Rolfes penalty and an Erden Derdiyok strike. Stefan Kiessling (68) rounded off the scoring.

Juup Heynckes' team leapfrog Hamburg at the top of the table with 20 points, although their rivals can regain the lead with a win at Hertha Berlin tomorrow.

Reigning champions Wolfsburg stumbled to a 1-1 draw with 10-man Bochum.

Vahid Hashemian gave the home side the lead after 53 minutes but they had Shinji Ono sent off 10 minutes later for a second bookable offence.

Wolfsburg finally broke through with 75 minutes gone as Edin Dzeko equalised.

Bayern Munich were held to their first goalless draw of the Bundesliga season by a defensive Cologne at the Allianz Arena.

The hosts hit the woodwork twice, but failed to break down a well-organised Cologne side.

Promoted Mainz snapped Hoffenheim's four-game winning streak with a 2-1 victory.

Andreas Ivanschitz gave Mainz the lead after six minutes and Aristide Bance made it 2-0 in the 11th minute.

Hoffenheim came into the game with 12 goals in their last three matches but could only manage a consolation from Andreas Ibertsberger in the 87th minute.

Hannover collected their first home victory of the season by beating Freiburg 5-2.

Sofian Chahed and Arnold Jan Bruggink made it 2-0 for the hosts after just 10 minutes.

Ivica Banovic pulled a goal back in the 35th minute but Karim Haggui made it 3-1 in first-half injury-time.

Julian Schuster cut the gap to 3-2 in the 82nd minute but Didier Ya Konan and Sergio Pinto completed the scoring in the closing minutes.

In the day's late game, Lucas Barrios scored his first goal of the season as Borussia Dortmund won their first Bundesliga match since early August at Borussia Monchengladbach.

The Argentinian struck the only goal of the game in the first half in a match which saw few chances for either side.