Dortmund tops Bayern Munich in feisty Klassiker

Berlin - Borussia Dortmund defeated champion and arch-rival Bayern Munich 1-0 on Saturday in a bad-tempered clash in "Der Klassiker" to leave upstart RB Leipzig the shock Bundesliga leader.

Related - Watch: Dortmund cuts Bayern open to tee up Aubameyang goal

Pierre-Emerick Aubameyang prodded in on 11 minutes at Signal Iduna Park to propel Dortmund up to third on 21 points, three points behind Bayern.

But RB Leipzig is top, three points clear of the mighty Bayern, after a thrilling 3-2 win at Bayer Leverkusen on Friday.