Serhou Guirassy has contributed to goals in his last four home games in the Bundesliga
Serhou Guirassy scored either side of half-time as Borussia Dortmund beat Union Berlin to secure their first win of the season.
The striker made Dortmund's dominance count a minute before the break, then struck again 13 minutes after the restart at Signal Iduna Park.
Maximilian Beier, who is reportedly the subject of interest from Premier League side Brentford, registered his first assist of the season when supplying Guirassy for his second of the game.
Jobe Bellingham started the game in the heart of Dortmund's midfield before being replaced by Felix Nmecha in the 71st minute.
Germany midfielder Nmecha then rounded off Dortmund's dominant display with the third goal of the game with 10 minutes to spare.
