Serhou Guirassy scored four goals to lead Borussia Dortmund to a 6-0 demolition of Union Berlin in the Bundesliga on Saturday in its first league win under new coach Niko Kovac.
The Guinea international scored three of his goals in an eight-minute span late in the second half to take his league tally to 13 goals, along with another 10 in the Champions League, where Dortmund will face Lille in the Round of 16 next month.
The host, which had lost its two previous league games under Kovac and earned only its second win in its last eight matches, moved into 10th place on 32 points.
Dortmund opened its account when former Union player Julian Ryerson saw his shot deflected in for an own goal by Diogo Leite in the 25th minute.
We were a bit slow to start, but after the first 15 minutes, we found our way into the game, and the own goal settled our nerves,” Kovac said.
Dortmund hit the crossbar with a Maximilian Beier header four minutes later but did everything right in the 40th when Guirassy headed in a Pascal Gross cross.
The Guinea international added his second in the 75th minute from close range before pushing the ball over the line after good work from Beier five minutes later to complete his hat-trick.
With the Union defence collapsing completely, he bagged a fourth goal when he headed in another Gross cross in the 83rd before Beier sealed the win in the 90th.