Champions Bayern Munich continue to set the pace at the top of the Bundesliga with a 1-0 win at home to Hannover giving them a maximum 15 points from five matches.
An early goal from Martin Demichelis was sufficient to separate the sides and keep the Bavarian giants two points clear at the summit.
Their closest challengers are now Werder Bremen, 3-2 victors at home to Borussia Dortmund – a result that kept them two points behind the leaders.
Hamburg, level with Bremen on points at the start of play, took their unbeaten run in all competitions to 14 matches but lost ground on Bayern after being held 1-1 by Eintracht Frankfurt.
Giovanni Trapattoni picked up his first Bundesliga win as Stuttgart coach with a 2-1 triumph at struggling Mainz.
Whether a 1-1 draw at former club Wolfsburg can save Wolfgang Wolf his job as Nurnberg coach remains to be seen.
Cologne registered a 2-1 win over local rivals Borussia Monchengladbach.
The match between Arminia Bielefeld and Kaiserslautern finished goalless.