Kevin Grosskreutz scores twice as Borussia Dortmund take Bundesliga lead . Stefan Kiessling finally pulled one back for Leverkusen with 10 minutes to play as he bravely poked in a cross by Renato Augusto before colliding with the goal-post . He also sets up third goal for Mario Müller in 3 - 1 win at FC Leverkusen . Hamburg fall 13 points behind and drop to third place on goal difference . Dortmund , seeking first German league title since 2002 , have 15 wins from 18 matches .
Kevin Grosskreutz scores twice as Borussia Dortmund take Bundesliga lead . He also sets up third goal for Mario Müller in 3 - 1 win at FC Leverkusen . Hamburg fall 13 points behind and drop to third place on goal difference . Dortmund , seeking first German league title since 2002 , have 15 wins from 18 matches .