Borussia Dortmund are hunting a win at second-placed RB Leipzig on Saturday to get back in the Bundesliga title race while elsewhere two German league records could be equalled this weekend.
At the top of the table, Bayern Munich coach Hansi Flick can claim 100 league points in his first 39 games if the league leaders win at Borussia Moenchengladbach on Friday.Pep Guardiola is the only other Bundesliga coach to have reached the milestone in the same number of games after taking charge of Bayern in 2013.
At the other end of the table, bottom side Schalke could equal the league record of 31 games without victory if they lose or draw at home to Hoffenheim.
In Saturday night's top match, Dortmund head to Leipzig in the "role of the hunter", according to sports director Michael Zorc, chasing an away win to trim the eight-point gap behind leaders Bayern.
A late Jadon Sancho goal sealed their 2-0 win at home to Wolfsburg last Sunday, but Dortmund are fourth after defeats to Stuttgart and Union Berlin in December dented their title hopes.