Everyone watched Borussia Dortmund's incredible performance against the Catalan football club the previous season, but they stumbled in their first match in the new German league. It was completely unimaginable that even though they were leading 3-1, the match against St. Pauli in the new Bundesliga season will remain undecided. However when Borussia Dortmund substituted one of their players in this match, i.e. Jube Bellingham was replaced by another player, his father expressed his dissatisfaction and it's very interesting that he was banned from the dressing room of a German league club. Union Berlin is certainly welcoming Borussia Dortmund for a new challenge this new season because as far as I know, Union Berlin has started this new season with a win.