The hosts were humiliated by Freiburg in a 5-0 drubbing last time out, whereas Hertha suffered a dismal defeat of their own to newly-promoted Arminia Bielefeld.
Koln ended 2020 in rather solid fashion with just one defeat from their final five, but their start to 2021 will certainly have fans fearing for the remainder of the campaign.
A 1-0 home loss to Augsburg was followed up with a humbling 5-0 defeat at the hands of an in-form Freiburg side, with Ermedin Demirovic, Nicolas Hofler, Roland Sallai, Philipp Lienhart and Lucas Holer all helping themselves to goals.
Still winless and goalless in 2021, Koln have now slipped into the bottom three after Arminia came up trumps in their clash with weekend opponents Hertha, and only four points separate the Billy Goats from the automatic relegation places following Schalke's first win of the campaign over Hoffenheim.
In fact, Markus Gisdol's side failed to score for the fourth league game in a row during their thrashing at Freiburg, and the return of Sebastian Andersson cannot come soon enough as Anthony Modeste flatters to deceive up top.
Furthermore, Koln's only victory of the season on home soil came against VfL Osnabruck in the DFB-Pokal, and the Billy Goats are one of only three teams in the Bundesliga yet to register a league win on familiar territory - the other two being Stuttgart and Mainz 05.
The hosts will welcome a familiar face back to the RheinEnergieStadion in the form of Hertha striker Jhon Cordoba, who returns to the side for whom he struck 37 goals during his three-year stay in North Rhine-Westphalia.
There will be no room for sentiment on Saturday, though, as Hertha will be equally determined to rectify last weekend's mistakes against Arminia, who scraped a 1-0 win courtesy of Reinhold Yabo's goal just after the hour mark at the SchucoArena.
Saturday's visitors can now only boast one win from their last five attempts in the German top flight, and any slim chances of a European berth are slowly dissipating as they lie nine points adrift of the top six after 15 matches.
While Koln's home form leaves a lot to be desired, Hertha will be aiming to put an end to their four-game winless run on the road, but they are now travelling to a ground where they have enjoyed an unparalleled spate of success in recent years.
Bruno Labbadia's men trounced the Billy Goats 4-0 in this fixture last season, and only Bayern Munich (10) can boast more victories than Hertha (8) on Koln's turf since 2004.
FC Koln Bundesliga form: DWLDLL
FC Koln form (all competitions): WLDWLL
Hertha Berlin Bundesliga form: WDDLWL
Gisdol opted for a 4-2-3-1 against Freiburg but should revert to his more familiar three-man defence here after last weekend's humiliation.
Rafael Czichos should therefore return to the rearguard, but the hosts will still be without Andersson as he struggles to battle his way back from a knee problem.
Cordoba could find his spot up top under threat from Krzysztof Piatek, but the Colombian will be desperate to get one over his former club and should spearhead the Hertha attack once more.
FC Koln possible starting lineup:
Horn; Bornauw, Czichos, Mere; Wolf, Hector, Skhiri, Jakobs; Rexhbecaj; Thielmann, Duda
Hertha Berlin possible starting lineup:
Schwolow; Pekarik, Stark, Alderete, Mittelstadt; Tousart, Darida, Guendouzi; Lukebakio, Cordoba, Ngankam
We say: FC Koln 1-1 Hertha Berlin
Neither of these two sides inspire much confidence given their respective home and away forms, which should act as an added incentive for both Koln and Hertha to get the job done on Saturday. The visitors could struggle on the attacking front if Cunha and Ngankam are both ruled out, but Koln have significant problems of their own to overcome in the final third, and we expect the two teams to cancel each other out at the RheinEnergieStadion.