Dortmund had dominated from the start but failed to turn possession into chances. St. Pauli goalkeeper Nikola Vasilj twice denied Guirassy when it seemed the Guinea star had to score. Ramy Bensebaini broke the deadlock in the 43rd with a header to Pascal Groß' cross. St. Pauli had a goal by Morgan Guilavogui ruled out through VAR for offside in the 30th.