Borussia Dortmund exacted partial revenge on Bayern Munich for their Champions League final defeat with a 4-2 win in a gripping German Super Cup encounter on Saturday.
Dortmund, undone 2-1 at Wembley and distant runners-up to champions Bayern in the Bundesliga, deprived new Bayern coach Pep Guardiola of his first piece of silverware and inflicted his first loss since the former Barcelona boss took over from Jupp Heynckes.
The home side took a sixth-minute lead, largely due to a mistake by Bayern keeper Tom Starke, who after a poor clearance was unable to keep out Marco Reus's diving header.
The match, in front of a sell-out 80,645 crowd, exploded in the second half, with three goals in the space of as many minutes.
First up was Arjen Robben, who levelled with a header by the far post after a fine cross from Philipp Lahm.
Dortmune went back in front seconds later when a mix up at the other end resulted in Bayern defender Daniel van Buyten's back header slipping past a distraught Starke, and stretched their advantage when Ilkay Gundogan curled a shot from the edge of the box into the bottom corner.
The game had barely time to draw breath when Robben gave fresh hope to Bayern after the hour, the Dutch star linking up well with Lahm for the game's fourth goal inside ten minutes.
Dortmund snatched a fourth via Reus, set up by Aubameyang, the pulsating win giving Klopp's side a timely boost ahead of the start of the new Bundesliga campaign on August 9.
Berlin: With the Bundedesliga set to restart on August 9, Guardiola said the errors will be fixed. "Overall, I am happy with the performance," said the 42-year-old ex-Barcelona coach, who suffered his first defeat in ten pre-season games since taking charge last month.
"Even though we lost, I didn't get the feeling that Dortmund were better than us. We still have ten days to get ready for the Bundesliga restart and to correct our minor errors."
Despite the defeat, captain Philipp Lahm said there was no cause for concern. "We are still in our pre-season phase and conceeded the goals at the worst possible time," said Lahm.