Two of German football's fiercest rivals go head to head this week end when Schalke host Borussia Dortmund in the Revierderby.
Title contenders Dortmund travel to the Veltins Arena in fourth place just one point ahead of their local foes who sit seventh. A win could hypothetically see either side go top of an immensely packed Bundesliga table, where the top nine sides are separated by just two points.