Manchester City boss Pep Guardiola admits they weren't at their best for Tuesday night's 0-0 draw at Champions League opponents Borussia Dortmund.'
Riyad Mahrez missed a penalty also on the night.
Guardiola said: "In the first half, we realised we made a good build up, played defensively, the same way we have played these years, and every time we lost simple balls. In this country they punish you well in the transitions like no other country in the world.
"We missed some passes. In the first half we had problems with our high pressing because [Niklas] Sule was so down and the distance for Joao [Cancelo] was so big and that's why we corrected things in the second half and played differently.
"It was much much better and more productive and we didn't suffer. In the second half the result was good for us and for them. They defended 5-4-1, striker dropping and they didn't want to push so we created possession and both teams were happy with that.
"We are first in the group again and Dortmund are happy because they will also be in the last 16."
