Borussia Dortmund head coach Jurgen Klopp has conceded that his side's 0-0 draw with Koln yesterday afternoon was "a fair result".
Hosting Dortmund created more chances and dominated possession at the Westfalenstadion, but were unable to find a way through the visiting defence.
Speaking to the club's official website after the final whistle, Klopp said: "They stand deep, they don't give you space [and] that is just the way they play. The more the game went on, the more pressure we put on them and we tried a lot.
"Even though the real bright sparks were missing, of course we could have won this game by one goal, but in the end we have to admit that 0-0 was a fair result."
The draw has seen Dortmund slip to 10th in the Bundesliga standings, eight points above the relegation zone.