Dortmund beats Bayern in Super Cup
Marco Reus scored twice in what was a rematch of the Champions League final between the sides, opening the scoring in the sixth minute and wrapping up the victory four minutes from time.
''We're delighted,'' said Dortmund goalkeeper Roman Weidenfeller. ''We won the Super Cup, especially against such a good team.''
Arjen Robben had equalized in the 54th, but Daniel van Buyten's attempted headed clearance from Ilkay Gundogan's cross flew spectacularly past his own goalkeeper a minute later.
Gundogan then followed up the minute after that by running at the Bayern defense and curling his shot inside the far post.
Robben scored again at the other end in the 64th, but offseason signing Pierre-Emerick Aubameyang set up Reus to decide the first title of the season in the 86th, though replays showed the winger was marginally offside.
''The game was simply brilliant,'' said Dortmund coach Jurgen Klopp. ''To have won it is just awesome.''
The loss ended Guardiola's perfect start at Bayern after taking over from Jupp Heynckes, who led the Bavarian side to an unprecedented treble last season.
Bayern had scored 61 goals and conceded just three in Guardiola's nine friendly games in charge.
''I don't have the feeling that they played much better than us,'' said Guardiola, who will have to wait a bit longer for his first title with Bayern. As Barcelona coach, he had taken 14 of the 19 titles on offer during four years in charge.
''It's football. It can happen,'' Guardiola said. ''We played well, we did things right. We played against a strong team, who played the Champions League final. But I'm honored for my players. It's a good lesson for us. After one month, I am very happy with our performance.''
Bayern's defense was to blame for the home side's opening goal when it failed to deal with Sven Bender's header and reserve goalkeeper Tom Starke could only parry the ball away, allowing Reus to score with a header.
Robert Lewandowski, a transfer target for Bayern, had a goal ruled offside shortly afterward, and later shot straight at Starke from close range.
Xherdan Shaqiri, playing in place of the injured Franck Ribery, was twice denied by good saves from Weidenfeller, while Mario Mandzukic came agonizingly close to converting a dangerous cross whipped in by David Alaba as Bayern sought a response.
But Dortmund finished the half strongly, with Gundogan drawing a save from Starke and having another effort deflected wide by Jerome Boateng, who berated teammate Van Buyten after another mix-up almost allowed Lewandowski through.
Robben was booed with every touch of the ball, as the home fans remembered his late winner against their side in the Champions League final, and he answered by meeting Lahm's cross to equalize.
Dortmund bounced right back through the unfortunate Van Buyten's interception and though Robben claimed his second to keep the tie in doubt after Gundogan's exquisite strike, the visitors' luck ran out when Thomas Mueller's late effort struck the crossbar.
''We wanted to win and it didn't work out,'' said Bayern captain Philipp Lahm. ''It can happen. They scored four goals and we two.''