Daniel Schwaab, who put past his own keeper against his former club, was understandably disappointed with the result, but for Stefan Kießling three points were all that mattered.
bundesliga.com rounds up the post-match views of those involved...
Daniel Schwaab: I'm just disappointed, we performed well and set up well early on after changing our system. We nullified Leverkusen and their strengths, while demonstrating our own. No one could have predicted what happened, and conceding such a stupid goal, which proved decisive, is doubly hard to take.
Christian Gentner: We dominated the game, but generally our crossing wasn't accurate enough. With regards to the own goal, I certainly apportion no blame to Daniel [Schwaab], the mistakes had happened earlier. The change of system was smooth, and the fans were outstanding, as usual, which always helps.
Moritz Leitner: Two games, two defeats - not an ideal start. We'll keep working though, it's certainly not all bad.
Bayer 04 Leverkusen:
Stefan Kießling: We'll happily take the three points back to Leverkusen. It doesn't matter how you earn them. We know it probably wasn't our best match, but throughout a long season, wins like this will happen. We're not complaining.