Stuttgart secures top-four spot, Leverkusen's title hopes take a hit

BERLIN, Feb. 8 (Xinhua) -- Stuttgart spoiled Niko Kovac's debut in charge of Dortmund as the Swabians ran out 2-1 winners, while defending champion Bayer Leverkusen was held to a goalless draw by Wolfsburg at the 21st round on Saturday.

From the start, Stuttgart concentrated on its defense, while BVB controlled possession without doing any damage to the visitor's bulwark.

Ramy Bensebaini had two half-chan