1. FC Köln overturned a half-time deficit to beat FSV Mainz 05 2–1 at home on Saturday, 17 January 2026. The Bundesliga Matchday 18 fixture kicked off at 14:30 UTC under the supervision of referee Felix Zwayer. Mainz held a 1–0 lead at the break, but Köln responded with two goals after the interval to secure all three points in front of their home crowd.

The win was a significant boost for Köln in the middle of the Bundesliga season. At Matchday 18, the club was fighting to establish itself in ...