The visitors gained momentum and had a golden chance when Jonas Hector's header on target rattled the bar in the 70th minute.

Even though Cologne were on the front foot it were the hosts who restored their three-goal lead through winter signing Haaland, who came off the bench to tap home a rebound and his fourth goal in his second game in the 77th minute.

The new arrival wasn't done with the scoring and wrapped up his brace in the Bundesligaclosing period after rounding Horn to curl home from sharp angle.

With the result, Dortmund climbed on the 3rd place of the standings and ended Cologne's four-game unbeaten streak. Meanwhile, the "Billy Goats" remain on the 13th place of the table.

The following games are set for Saturday: Borussia Monchengladbach host Mainz, Wolfsburg see Hertha Berlin, Eintracht Frankfurt clash with front runners Leipzig, Freiburg face bottom side Paderborn, newly promoted Union Berlin encounter Augsburg and Schalke travel to runner up Bayern Munich.

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