Match ends, Borussia Dortmund 0, Hannover 96 1.
Borussia Dortmund's losing run in the Bundesliga stretched to four games as a 1-0 home defeat by Hannover 96 left them a point above the relegation zone.
Dortmund boast a 100% record in the Champions League after three straight victories but are without a domestic league win in six games.
Hiroshi Kiyotake scored Hannover's winner from a 61st-minute free-kick.
Dortmund coach Jurgen Klopp said: "We have to keep going and ensure that we no longer feel like this after games."
He added: "We aren't in a good situation in the Bundesliga and that's something we haven't come to terms with until now."
Hannover, who finished with 10 men after Turkey midfielder Ceyhun Guelselam was sent off for two bookable offences, ended a three-game losing run as Japan international forward Kiyotake, 24, curled home their first goal in 416 minutes.
Dortmund are away to champions and Bundsesliga leaders Bayern Munich next weekend.
- 37DurmSubstituted forPapastathopoulosat 77'minutes
- 8GündoganBooked at 60minsSubstituted forKagawaat 66'minutes
- 10MkhitaryanBooked at 51mins
- 11ReusBooked at 80mins
- 20RamosSubstituted forImmobileat 77'minutes
- 1ZielerBooked at 90mins
- 18StankeviciusSubstituted forHirschat 72'minutes
- 25Guedes FilhoBooked at 68mins
- 20Trevizan Martins
- 8SchmiedebachBooked at 50mins
- 6GülselamBooked at 89mins
- 21BriandSubstituted forSchlaudraffat 90+4'minutes
- 28KiyotakeSubstituted forSobiechat 73'minutes
- 11JoseluBooked at 36mins
- Tobias Stieler
- Shots on Target
Second Half ends, Borussia Dortmund 0, Hannover 96 1.
Foul by Neven Subotic (Borussia Dortmund).
Maurice Hirsch (Hannover 96) wins a free kick in the defensive half.
Corner, Borussia Dortmund. Conceded by Manuel Schmiedebach.
Substitution, Hannover 96. Jan Schlaudraff replaces Jimmy Briand.
Foul by Shinji Kagawa (Borussia Dortmund).
Maurice Hirsch (Hannover 96) wins a free kick in the attacking half.
Ron-Robert Zieler (Hannover 96) is shown the yellow card.
Attempt missed. Henrikh Mkhitaryan (Borussia Dortmund) right footed shot from outside the box is close, but misses to the left. Assisted by Pierre-Emerick Aubameyang.
Attempt missed. Ciro Immobile (Borussia Dortmund) right footed shot from the centre of the box is too high. Assisted by Neven Subotic with a headed pass following a corner.
Corner, Borussia Dortmund. Conceded by Felipe.
Neven Subotic (Borussia Dortmund) wins a free kick in the defensive half.
Foul by Joselu (Hannover 96).
Offside, Borussia Dortmund. Mats Hummels tries a through ball, but Marco Reus is caught offside.
Second yellow card to Ceyhun Gülselam (Hannover 96) for a bad foul.
Marco Reus (Borussia Dortmund) wins a free kick on the right wing.
Foul by Ceyhun Gülselam (Hannover 96).
Ciro Immobile (Borussia Dortmund) wins a free kick on the left wing.
Foul by Marcelo (Hannover 96).