Koln lost to Borussia Dortmund in their previous outing and last won in the Bundesliga more than a month ago when they beat bottom-placed Greuther Furth 3-1.
Union Berlin, on the other hand, are not in the best of form either, having failed to win their last two games in the league.
In fact, Urs Fischer’s side have won just one out of their last five games across all competitions and have struggled after a bright start to the season.
Both teams will want a positive result heading into the international break, so we could be in for a thrilling game of attacking football.
Koln vs Union Berlin Head-to-head
Since their promotion to the Bundesliga more than two years ago, Union Berlin have won all four meetings between the two sides.
The overall head-to-head record, however, is close as Koln have five wins while Union Berlin have won the fixture six times. Just one game has ended as a draw.
Koln form guide: W-L-D-W-L
Union Berlin form guide: L-D-W-L-L
Koln vs Union Berlin Team News
The hosts are likely to be without Jannes Horn, Ellyes Skhiri and Niklas Hauptmann for the clash against Union Berlin on Sunday.
Injured: Jannes Horn, Ellyes Skhiri, Niklas Hauptman
Max Kruse is still not fit enough to be part of the matchday squad. The German is likely to be ready post the international break.
Apart from Kruse, Fischer has a fully-fit squad to choose from.
Unavailable: Max Kruse
Koln vs Union Berlin Predicted Lineups
FC Koln Probable XI (4-4-2): Tim Horn; Jonas Hector, Timo Hubers, Luca Kilian, Benno Schmitz; Dejan Ljubicic, Florian Kainz, Salih Ozcan, Mark Uth; Jan Thielmann, Anthony Modeste
Union Berlin Probable XI (3-5-2): Andreas Luthe; Marvin Friedrich, Robin Knoche, Timo Baumgartl; Niko Giesselmann, Genki Haraguchi, Rani Khedira, Christopher Trimmel, Grischa Promel; Taiwo Awoniyi, Sheraldo Becker
Koln vs Union Berlin Prediction
Both teams are in a bit of a rut, especially Koln, who have found it hard to score goals. Union Berlin, however, have failed to keep a clean sheet in their last five games across competitions.
Koln might take advantage of Union Berlin’s poor defensive record to pick up a win at home.
Prediction: Koln 2-1 Union Berlin