Interesting matches in the quarterfinals.
Considering how the teams have performed for now Schwerin, Stuttgart, Potsdam and Aachen should make it.
But it will be interesting to see how Suhl will do against Stuttgart.
Stuttgart won (too) easily the league match against Suhl, managing to keep them out of the match all the time. I don't expect it being so easy again, but still Stuttgart to win. Erfurt has good chances against Aachen IMHO, Aachen is playing really bad so far most of the time.