Borussia Dortmund News"We really need to step up our game" - Kovac offers squad update ahead of Stuttgart visit
Borussia Dortmund NewsInternational Watch: Dortmund's Austrian duo Sabitzer and Chukwuemeka run riot against Ghana
Borussia Dortmund News"We definitely played far too slowly" - Kovac laments sluggish first half against Hamburg
