Cologne struck twice in three minutes to edge past Hertha Berlin 3-1 on Sunday for their third straight league win, putting them in contention for European competition next season.
At 0-0 Hertha had the best chance of the game in the 29th minute but keeper Marvin Schwaebe denied Myziane Maolida with a superb save.
A minute later Cologne scored with their top striker Modeste powering in a header from a central position for his 12th goal of the campaign.
In the 32nd minute they found themselves 2-0 up after Duda fired in a low drive from the edge of the box.
Vladimir Darida's 58th minute free kick gave Hertha hope, but the hosts' finish lacked precision as they gradually ran out of steam.