Bayer Leverkusen climbed above Hannover and up to fourth in the Bundesliga with a 3-1 win at the Niedersachsenstadion.
Speculation has suggested that Philipp Wollscheid could see a loan deal at Mainz cut short but he is ignoring move talk.
Bayern Munich won to move seven points clear in the Bundesliga as a Werder Bremen win sent Borussia Dortmund bottom.
Bayer Leverkusen were frustrated in their search for three points as they were held to a goalless draw by Mainz.
A second-half double from Son Heung-min earned Bayer Leverkusen an impressive 2-1 win at Zenit St Petersburg on Tuesday.
Bayern Munich took the honours in the big clash in the Bundesliga, coming from behind to beat Borussia Dortmund 2-1.
Hamburg stunned high-flying Bayer Leverkusen to pick up a rare win and move out of the Bundesliga bottom three.
Borussia Dortmund's wretched start to the Bundesliga season continued against Hannover, while Roberto Di Matteo lost his first game at Schalke.
Roberto Di Matteo lost his first game as Schalke boss as Bayer Leverkusen took the honours with a 1-0 win at the BayArena.
Bayer Leverkusen boosted their hopes of advancing from Champions League Group C with a 2-0 win over Zenit St Petersburg.
Mario Gotze and Philipp Lahm hit braces as Bundesliga leaders Bayern Munich romped to a 6-0 victory over Werder Bremen.
Stuttgart came from three goals down to snatch a 3-3 draw at home to Bayer Leverkusen and continue their recent revival.
Hamburg picked up their first Bundesliga win to pile misery on Borussia Dortmund, while Bayern Munich thrashed Hannover.
Karim Bellarabi grabbed a last-minute equaliser to salvage a 2-2 draw for Bayer Leverkusen at home to Paderborn.
Bayer Leverkusen won 3-1 to open their account in Champions League Group C and leave Benfica staring at an early exit.
Bayer Leverkusen director of sport Rudi Voller was critical of Bundesliga refereeing after his club's draw at Freiburg.
Freiburg were left still waiting for their first win of the season after being held to a goalless draw by Bayer Leverkusen.
Son Heung-Min helped get Bayer Leverkusen back to winning ways with the only goal of the game against Augsburg.
Wolfsburg bounced back from their humbling at the hands of Everton on Thursday by beating 10-man Bayer Leverkusen.
Wolfsburg bounced back from defeat at Everton by beating Bayer Leverkusen 4-1 in the Bundesliga on Sunday.
Who's going through? Who's going out? We assess the permutations ahead of Matchday 5.