Coach Niko Kovac made his debut for Borussia Dortmund with a 2-1 defeat at home against VfB Stuttgart on Saturday in the Bundesliga, while champions Bayer Leverkusen were held to a goalless draw at VfL Wolfsburg.

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.

DORTMUND, Germany (Reuters) -Ten-man 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.

VfB Stuttgart hope to beat Borussia Dortmund again on Saturday in the Bundesliga but coach Sebastian Hoeness has admitted that the arrival of Niko Kovac as Dortmund coach is complicating matters for them.