<p class="title">Paco Alcacer scored the winner as Bundesliga leaders Borussia Dortmund twice came from behind to beat defending champions Bayern Munich 3-2 and move seven points clear of their third-placed rivals.</p>.<p class="bodytext">The result on Saturday piles added pressure on Bayern head coach Niko Kovac, as his side's chances of winning a seventh straight title in his first season in charge took another blow.</p>.<p class="bodytext">Bayern have now been beaten in three of their last six Bundesliga games after defeats by Hertha Berlin and Borussia Moenchengladbach, managing just eight points from the last 21 available.</p>.<p class="bodytext">They will drop to fourth in the table on Sunday if RB Leipzig beat Bayer Leverkusen at home.</p>.<p class="bodytext">Lucien Favre's Dortmund remain unbeaten and four points clear of second-placed Gladbach at the top of the table.</p>.<p class="bodytext">After Lewandowski twice gave Bayern the lead at Signal Iduna Park against his former club, Dortmund captain Marco Reus hit two equalisers before substitute Alcacer struck in the 73rd minute.</p>.<p class="bodytext">Alcacer has now scored eight goals in six league appearances since signing on loan from Barcelona.</p>.<p class="bodytext">Bayern took a deserved lead when Serge Gnabry curled in a cross for Lewandowski to power a header past stand-in Dortmund goalkeeper Marwin Hitz on 26 minutes.</p>.<p class="bodytext">It was 1-0 at the break, but Dortmund drew level when Manuel Neuer brought Reus down in the area in the 49th minute and the skipper calmly converted the penalty.</p>.<p class="bodytext">Lewandowski restored the lead three minutes later, heading home his second -- his 14th goal in 16 matches for Bayern against Dortmund, who he left in 2014 on a free transfer.</p>.<p class="bodytext">Reus had a chance cleared off the line on 59 minutes, just before Lewandowski had the ball in the Dortmund net, but was flagged for offside.</p>.<p class="bodytext">It was end-to-end stuff as Alcacer, then Reus blew golden chances before both made amends with goals.</p>.<p class="bodytext">Reus finally fired Dortmund level when he volleyed home a Lukasz Piszczek cross in the 67th minute.</p>.<p class="bodytext">Then when Franck Ribery gave the ball away, Alcacer showed some classy finishing by rounding Neuer to put Dortmund ahead for the first time.</p>.<p class="bodytext">Bayern kept the pressure on during a tense five minutes of added time.</p>.<p class="bodytext">Lewandowski had the ball in the net for a fourth time, but again the flag went up for offside to the delight of the home fans in the sell-out 81,365 crowd.</p>.<p class="bodytext">"That was a crazy game, a great advert for the Bundesliga and the win wasn't undeserved," said Dortmund boss Favre.</p>
<p class="title">Paco Alcacer scored the winner as Bundesliga leaders Borussia Dortmund twice came from behind to beat defending champions Bayern Munich 3-2 and move seven points clear of their third-placed rivals.</p>.<p class="bodytext">The result on Saturday piles added pressure on Bayern head coach Niko Kovac, as his side's chances of winning a seventh straight title in his first season in charge took another blow.</p>.<p class="bodytext">Bayern have now been beaten in three of their last six Bundesliga games after defeats by Hertha Berlin and Borussia Moenchengladbach, managing just eight points from the last 21 available.</p>.<p class="bodytext">They will drop to fourth in the table on Sunday if RB Leipzig beat Bayer Leverkusen at home.</p>.<p class="bodytext">Lucien Favre's Dortmund remain unbeaten and four points clear of second-placed Gladbach at the top of the table.</p>.<p class="bodytext">After Lewandowski twice gave Bayern the lead at Signal Iduna Park against his former club, Dortmund captain Marco Reus hit two equalisers before substitute Alcacer struck in the 73rd minute.</p>.<p class="bodytext">Alcacer has now scored eight goals in six league appearances since signing on loan from Barcelona.</p>.<p class="bodytext">Bayern took a deserved lead when Serge Gnabry curled in a cross for Lewandowski to power a header past stand-in Dortmund goalkeeper Marwin Hitz on 26 minutes.</p>.<p class="bodytext">It was 1-0 at the break, but Dortmund drew level when Manuel Neuer brought Reus down in the area in the 49th minute and the skipper calmly converted the penalty.</p>.<p class="bodytext">Lewandowski restored the lead three minutes later, heading home his second -- his 14th goal in 16 matches for Bayern against Dortmund, who he left in 2014 on a free transfer.</p>.<p class="bodytext">Reus had a chance cleared off the line on 59 minutes, just before Lewandowski had the ball in the Dortmund net, but was flagged for offside.</p>.<p class="bodytext">It was end-to-end stuff as Alcacer, then Reus blew golden chances before both made amends with goals.</p>.<p class="bodytext">Reus finally fired Dortmund level when he volleyed home a Lukasz Piszczek cross in the 67th minute.</p>.<p class="bodytext">Then when Franck Ribery gave the ball away, Alcacer showed some classy finishing by rounding Neuer to put Dortmund ahead for the first time.</p>.<p class="bodytext">Bayern kept the pressure on during a tense five minutes of added time.</p>.<p class="bodytext">Lewandowski had the ball in the net for a fourth time, but again the flag went up for offside to the delight of the home fans in the sell-out 81,365 crowd.</p>.<p class="bodytext">"That was a crazy game, a great advert for the Bundesliga and the win wasn't undeserved," said Dortmund boss Favre.</p>