Bayern Munich's Jerome Boateng scored a last-minute winner to deny Manchester City a point in their opening Champions League group game.
City came close to equalising in stoppage time when substitute Sergio Aguero burst past Dante Bonfim Costa Santos but poked his shot wide.
The German side controlled the majority of the match and Manchester City goalkeeper, Joe Hart, was put to the test.
Hart remains confident despite the loss, "Last year we had a poor start against Bayern but we won the rest of our games and qualified - we're confident we can do it again this time."
In another Champions League match, Chelsea drew 1-1 against FC Schalke of Germany.
Cesc Fabregas scored his first goal for Chelsea before Klaas-Jan Huntelaar equalised.
Loic Remy had a shot cleared off the line as Schalke held on for a point.
Elsewhere, Barcelona won 1-0 against Apoel Nicosia at the Nou Camp.