Hoffenheim moved to within two points of the top six as they downed struggling Mainz 2-0 in Sinsheim.
Mainz halted their slide towards the Bundesliga relegation zone with a 3-1 win over Eintracht Frankfurt.
Bundesliga side Mainz have parted company with coach Kasper Hjulmand after winning just one of 13 league games.
Borussia Dortmund completed back-to-back Bundesliga wins for only the second time this season by beating Mainz 4-2.
Pal Dardai celebrated a winning start as coach of Hertha Berlin as they picked up their first points of 2015.
Bayern Munich failed to win for the second match in a row as they were held to a 1-1 draw by Schalke at the Allianz Arena.
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