Dortmund defeat title rivals Bayern in Munich with former defender Mats Hummels applying the nail to the coffin of the champion's title bid...
Lucas Barrios opened the scoring on nine minutes only for Luiz Gustavo to volley an equaliser seven minutes later. Nuri Sahin immediately restored Dortmund's lead on 18 minutes with a beautiful curling effort and Mats Hummels gave the Bundesliga leaders some breathing space with his powerful header on the hour mark.
The result opens up a massive 16 point gap between Dortmund and fourth-placed Bayern with Juergen Klopp's men looking increasingly like champions.
Dortmund made a confident start to the game and shocked the home faithful when they took the lead on nine minutes. Bastian Schweinsteiger was casual in possession as Kevin Grosskreutz sneaked up on his German international team-mate before dispossessing him and sliding a precise through ball to Lucas Barrios. The Argentinian-born hitman was cool, calm and collected as he slid the ball past Thomas Kraft from 12 yards out.
Bayern reacted well to going a goal down and clawed their way back into the game with an equaliser on 16 minutes. Franck Ribery curled a corner into the box and with BVB's defence late to react, Luiz Gustavo was on hand to volley the ball into the top corner from eight yards out, a terrific strike from the former Hoffenheim man.
Amazingly the score was not level for long as Juergen Klopp's men took the lead again two minutes later. Barrios did well to find Mario Goetze in space on the edge of the Bayern box. The 18-year-old wonder-kid held the ball up before laying the ball back to Nuri Sahin who curled a delicious effort into the far corner from 25 yards out.
The home side thought they had found another equaliser on 26 minutes but the goal was ruled out for offside. Thomas Mueller played Mario Gomez through on goal with the Bundesliga top scorer confidently slotting the ball past Mitchell Langerak only for the flag to go up to disallow the goal, a controversial decision with the home contingent.
The second half was played at a less frenetic tempo in comparison to the first but there was to be a fourth goal in this game and it was the Bundesliga leaders who scored it on the hour mark. Goetze's curling corner was met by an outstanding leap from Mats Hummels. The former Bayern man headed the ball into the far corner leaving Kraft completely helpless.
Louis van Gaal's men came close to pulling a goal back on 75 minutes. Daniel Pranjic did well to get the better of Piszczek down the left before crossing for Gomez. The German international got a strong right-footed shot away but Langerak made a superb save to divert the ball to safety.
Die Roten continued to press and were inches away from scoring their second goal of the game on 79 minutes when Ribery's low 20 yard effort sailed narrowly wide of the post with the 'keeper left rooted to his spot.
However, Dortmund continued to threaten and came mightily close to making it four on 84 minutes when Robert Lewandowski met Goetze' deep corner at the back-post only for Pranjic to clear the ball unconventionally off the line.
The 3-1 victory is the first time BVB have won at Bayern in 20 years and Klopp's first points against the Bavarian giants.