However Dortmund make it five straight wins with a topsy - turvy 3 - 2 Bundesliga victory at Cologne . Mats Hummel opened the scoring in the 28th minute and doubled Dortmund 's lead in first-half injury time . Kevin Martin pops up in injury time to seal the victory for the visitors who are two points off the top . Kevin Kuranyi scores the only goal for Schalke as they beat Dortmund 1 - 0 to return to second in league .
However Dortmund make it five straight wins with a topsy - turvy 3 - 2 Bundesliga victory at Cologne . Kevin Martin pops up in injury time to seal the victory for the visitors who are two points off the top . Kevin Kuranyi scores the only goal for Schalke as they beat Dortmund 1 - 0 to return to second in league .