Bayer Leverkusen claimed a shock 2-0 Bundesliga win at Borussia Dortmund on Saturday, while Hannover beat Schalke.
Hoffenheim began their Bundesliga campaign with a 2-0 win over Augsburg on Saturday afternoon.
Sky Sports understands Derby County are poised to sign German youngster Tom Koblenz from Hoffenheim.
Bayern Munich bounced back from their German Supercup disappointment by beating Preussen Munster 4-1 in the German Cup.
Hoffenheim have bolstered their attacking options by signing winger Steven Zuber from CSKA Moscow.
Hamburg have appointed Bernhard Peters as their new sporting director a day after parting company with Oliver Kreuzer.