For the occasion, Köln coach Peter Stöger wants his side to give the fans a treat at the RheinEnergieStadion against a side struggling for form. bundesliga.com has all the most important pre-match information...
Both sides find themselves at arm's length from the relegation zone but still a little too close to the bottom three for comfort, which is why a win would provide some serenity heading into their final encounters of the calendar year against VfL Wolfsburg and FC Bayern respectively.
Köln's weekend win in Gelsenkirchen justified Stöger's (r.) first-team choices and the chances are he will stick with the same selection on Tuesday. The Austrian had no new injuries to report when he met the media on Monday.
Mainz coach Kasper Hjulmand leapt to the defence of (l.), who had been made the scapegoat for his side's going a seventh game without a win. "It's not all Nikolce's fault," said Hjulmand, who should keep faith in his captain. "Nikolce actually had a decent game."
Coolness from the penalty spot is not the only string on 's bow, even if that has helped him to three goals this season. The 31-year-old organises Köln's action and was sorely missed in the defeat to Augsburg. It is no coincidence, therefore, that the Billy Goats got back to winning ways upon his return.
Mainz have lacked a bit of invention in recent weeks, but if anybody can provide that, it is (l.). The summer recruit from FC Sevilla has the skill and technique to drive opponents dizzy, and that is what his team need right now. "He's a really, really good lad," said Hjulmand.
Peter Stöger: "We hope to give our fans joy in our own stadium. We're not going to sit on our win in Schalke."
Kasper Hjulmand (r.): "I have a feeling of frustration - not for our performances, but for our lack of points."
Mainz's last Bundesliga win dates back almost two months to 18 October, since which they have lost four and drawn three. Köln, meanwhile, snapped a three-game losing streak with their win at the Veltins Arena on Saturday.
These two Carnival clubs have met eight times with Köln victorious on three occasions and Mainz four. The 05ers won the last meeting 4-0 in April 2012 while the last meeting at the RheinEnergieStadion ended all square. Köln knocked Mainz out of the DFB Cup last season with a 1-0 away win.
Köln: Horn - Olkowski, Maroh, Wimmer, Hector - Vogt, Lehmann - Risse, Osako, Gerhardt - Ujah
Mainz 05: Karius - Brosinski, Bell, Wollscheid, Junior Diaz - Geis, Parker - Jairo, Malli, Allagui - Okazaki