The Bundesliga champions enjoyed the majority of possession but it was Lucien Favre side that came out on top as Borussia Dortmund washed away some of the pains of losing the league title last term.
Bayern manager Niko Kovac has offered explanations regarding why is team lost a game they dominated from start to finish.
Dortmund defeated Bayern with a 2-0 win on Saturday in the DFL-Supercup with goals from Paco Alcacer and Jadon Sancho preventing Bayern from winning the German season's curtain-raiser for a fourth consecutive year.
The Croatian manager afterwards lamented the mistakes that cost his team the match.
“Of course, we're sad we lost the match today. I think we turned in a decent display, not a very good one, but decent.
“We were dominant, we made two mistakes Dortmund capitalised on. We failed to take our chances, which is why we lost the match.
“We're in the fourth week of pre-season. It was the first match where everyone played 90 minutes, you can't expect more in this situation. I'm not dissatisfied, of course it wasn't an outstanding performance.
“We must take our chances and not play into Dortmund's hands, losing the ball and allowing counters.”
