They showed how much they deserved the Champions League ticket by winning every match in the last weeks. They started this year badly, we saw from the beginning that they would not finish second in the league, but we did not think at the beginning of the season that they would fall so far behind. The team recovered very well in the last 1 month and did not give the opponents any chance, if they had made a mistake even in one match, they would not have gone to the Champions League next season.
Borussia Dortmund is the best team in Bundesliga when we take a look on the last month mainly. It is true they started badly the season but they finished it very well and deserved to pick the last ticket for UEFA Champions League. I think they could do better in the next season if they continue like that.
Freiburg, Mainz, Leipzig, Stuttgart and M'Gladbach aren't consistent at all and missed many opportunities to compete Borussia Dortmund. Some of them were able at some point to pick Europa League at least..