Leverkusen made it difficult for Dortmund to achieve victory but I saw Dortmund never stop fighting to create opportunities. Even though they lost in the dominance of the match, Dortmund had a number of accurate chances to score goals so that Leverkusen could not avoid defeat from Dortmund in the match. But unfortunately in one remaining match it was not able to help Dortmund qualify for the Champions League if Freiburg managed to beat Frankfurt even though the chance is still open because Frankfurt is much better than Freiburg.
All the chances to stop Dortmund from winning did not work so this is more reason why experience is actually a good tool because if you look at it there is no way that Dortmund would have given them a easy win so there is a lot more why we need to be very careful when you are placing a bet.
And even if Dortmund are not doing to well you can not over underestimate them so there is enough reasons for you to actually not to play with them because the game ended 4:2 and Dortmund did not show any weakness at all so there is enough reasons for to play smart. And the game of Freiburg beating Frankfurt is not a big deal.