BERLIN, Sept 28 (Reuters) - The Bundesliga's last remaining unbeaten record fell on Sunday when VfL Wolfsburg suffered a surprise 2-1 defeat away to Karlsruhe.
A big win would have taken Wolfsburg up as high as second but they suffered a spectacular comedown from last weekend's 3-0 victory over Hamburg SV.
Karlsruhe took the lead with a Massimilian Porcello free kick at the start of the second half and Wolfsburg were further hit when Grafite was sent off for a second booking.
Sebastian Freis made it 2-0 when he knocked in a cross from Alexander Iashvili and although Wolfsburg gave themselves hope when Ricardo Costa headed down and in with around 10 minutes to go they could not complete the comeback.
With six games played, Hamburg are the new leaders with 13 points after they recovered from that mauling by Wolfsburg to win 1-0 at home to Borussia Moenchengladbach on Saturday.
Bayer Leverkusen are second on 12 points, while Werder Bremen are third, a point further back, after their jaw-dropping 5-4 win over 1899 Hoffenheim.
Schalke 04, who went into the latest round of matches as the league leaders and the only other unbeaten team, have dropped to fourth on 11 points after they lost 1-0 at Cologne on Friday.
Champions Bayern Munich are down in ninth place with eight points after their season took another turn for the worse with a 1-0 defeat away to Hanover 96 on Saturday.