BERLIN, Sept 27 (Reuters) - Werder Bremen saw off an heroic fightback from newcomers Hoffenheim to snatch a 5-4 win on Saturday, while misfiring Bayern Munich lost 1-0 at Hanover 96.
Bremen, 5-2 winners away to Bayern last weekend, picked up where they left off in Saturday's Bundesliga clash at home to Hoffenheim as they built up a 4-1 lead in the first half.
The visitors recovered to 4-4 before 10-man Bremen grabbed a late winner through Mesut Ozil.
While Bremen were running riot, Bayern were utterly devoid of ideas against Hanover, who took the lead with a Szabolcs Huszti free kick and held on comfortably.
Hamburg SV lead the standings with 13 points from six games after a 1-0 win at home to Borussia Moenchengladbach, courtesy of a Mladen Petric goal. Bayer Leverkusen are second on 12 points after a nervy 3-2 win at Bochum.
Bremen are up to third place on 11 points after their latest scoring spree, while Bayern, with just two wins to their name, are down in ninth place on eight points.
Once again Bayern were let down by a mistake from goalkeeper Michael Rensing, who could not get across quickly enough to keep out a clever free kick from Huszti in the 23rd minute.
Franck Ribery, recovered from his ankle injury, came on for a second substitute appearance of the season but even the French playmaker could not inspire a comeback.
The lack of bite in attack will be a worry for Klinsmann before Tuesday's Champions League clash with Olympique Lyon.
Werder, by contrast, can hardly stop scoring ahead of their Champions League trip to face Inter Milan on Wednesday.
Ozil struck a carbon copy of his goal against Bayern last Saturday to make it 1-0, cracking in a 20-metre shot at the near post before Hoffenheim equalised through Demba Ba.
Werder recovered the lead almost immediately through Claudio Pizarro and a Diego half-volley followed by an Aaron Hunt blast from outside the area made it 4-1.
Hoffenheim got one back before half-time via a 25-metre free kick from Sejad Salihovic and Vedad Ibisevic made it 4-3 from the penalty spot just past the hour mark.
Almost immediately Werder had Per Mertesacker sent off for bringing down Ibisevic and Marvin Compper headed in the equaliser with 20 minutes to go.
That was plenty of time for a grand finale and it came when Ozil clattered in a long-range shot for his second of the game.