Luiz Gustavo's injury-time winner earned Bayern Munich a 1-0 win at Wolfsburg yesterday, while defending champion Borussia Dortmund was beaten 1-0 at Hoffenheim.

Franck Ribery cut the ball back for Brazilian midfielder Luiz Gustavo to shoot from outside the penalty area, Diego Benaglio getting his hands to the ball but failing to keep it out.

Patrick Helmes had a goal ruled out in the 39th, when television replays showed the Wolfsburg striker was onside.

Sejad Salihovic's free kick in the 9th was enough for Hoffenheim to beat Dortmund.

Elsewhere, Schalke beat Cologne 5-1, Hamburger SV drew 2-2 with Hertha Berlin, Nuremberg lost 2-1 at home to Hannover, and Mainz won 2-1 in Freiburg.

Wolfsburg will feel hard done by after making the better start and frustrating Bayern for long periods.

Ribery's petulant swipe at Mario Mandzukic betrayed Bayern's tension after its opening loss to Moenchengladbach — it had never started a Bundesliga campaign with two losses — and it took some time for the visiting side to settle.

Despite seeing more of the ball, however, Jupp Heynckes' side looked short of ideas and failed to really trouble Benaglio in the first half.

Mario Gomez tried his luck from distance in the 30th, before a Helmes effort was blocked by Jerome Boateng at the other end.

Helmes' disallowed goal left Wolfsburg coach Felix Magath fuming on the sideline, before the game sparked to life.

Toni Kroos was booked for diving in the penalty area a minute later, and Benaglio blocked a Gomez effort.

Bastian Schweinsteiger should have scored after the interval, shooting a yard over from a promising position, and Bayern improved in the second half.

Heynckes introduced Takashi Usami for the Japanese midfielder's Bundesliga debut in the 69th, but the final word fell to a Brazilian.

All eyes were on Dortmund's midfielder Mario Goetze to continue his good form at Hoffenheim, but the 19-year-old was faced with three players anytime he received the ball.

Salihovic settled the issue when his perfectly struck effort from the right of the penalty area gave Dortmund keeper Roman Weidenfeller no chance.

Offseason signing Ivan Perisic hit the crossbar for Dortmund in the 63rd, when Felipe Santana was too surprised to react for the rebound.

It was new coach Holger Stanislawski's first win in 14 games, and his first ever win over Dortmund.

The bus carrying Schalke's players was delayed by traffic on the way to the Veltins-Arena, leading to a delay in kickoff.

Cologne's Lukas Podolski opened the scoring in the 12th when rounded off an incisive counterattack, and Schalke was fortunate to equalize before halftime when Kevin McKenna was adjudged to have handled the ball in the penalty area.

Kyriakos Papadopoulos' header hit the Canadian defender's arm from short range, and Klaas Jan Huntelaar converted the resultant spot kick in the 42nd.

Huntelaar rose highest to meet new signing Marco Hoeger's cross in the 47th, and Hoeger capitalized on some sloppy Cologne defending to set Lewis Holtby up for another a minute later.

Raul Gonzalez made it 4-1 with his trademark chip over the helpless Michael Rensing in the 59th, before Huntelaar completed his hat trick in the 84th.

In Nuremberg, Mohammed Abdellaoue scored from close range for Hannover in the 16th, before earning a penalty for Konstantin Rausch to convert in the 27th.

American international Timothy Chandler provided the cross for Tomas Pekhart to score a consolation in the 56th.