Schalke are in decent shape, with two wins and two draws in their last five games. Union Berlin are going through a tough spell, losing three of their last five, including one heavy defeat. Their one bright moment came against Schalke themselves back in September, when they won comfortably.

Recent meetings between these two have been mixed - some ended with no goals at all, while others were very open. Overall, this looks like a close game, but Schalke's better recent form gives them the edge at home. I'd lean toward a Schalke win.