Borussia Dortmund slumped to a 2-1 defeat to visitors VfB Stuttgart on Saturday in a disappointing debut for new coach Niko Kovac that dropped his team further away from the Champions League qualification spots.

Borussia Dortmund fell to a 2-1 home defeat to Stuttgart on Saturday in Niko Kovac's first game at the helm, slipping further away from the Bundesliga's top four.

Borussia DortmundKovac is set to take over the reins from interim boss Mike Tullberg, who took charge of three matches following Nuri Şahin’s dismissal last month. Tullberg started his temporary