Werder Bremen lifted themselves out of the bottom three and up 12th in the Bundesliga thanks to two goals from Franco Di Santo on his comeback from injury.
The Argentinian netted at the end of the first half and again in the 69th minute to seal a 2-0 win over Hertha Berlin, who slip to within a point of the danger zone.
It was a one-sided encounter at the Weser Stadion and one which will raise a lot of concern for Hertha coach Jos Luhukay, whose side ended 2014 with a 5-0 defeat at home to Hoffenheim...
Germany youth international Hany Mukhtar has joined Benfica from Hertha Berlin.
Mukhtar, 19, was under contract at Hertha until 2015, but was not interested in staying at his hometown club beyond the summer and has made the move for 500,000 euros.
Hoffenheim brought a spectacular end to their 2014 with a 5-0 win at Hertha Berlin on Sunday, moving them to within a point of the top six for the duration of the winter break.
John Anthony Brooks gave them a leg-up with an own goal which was followed by two penalties from Sejad Salihovic before half-time.
Hertha, who led Frankfurt by three goals in midweek and ended up drawing 4-4, this time had to come from behind, but they were not able to as Sven Schipplock and Sebastian Rudy completed the rout.