Bayer Leverkusen defeated its host Hamburg 1-0 in the match that brought them together on Wednesday evening in the German League «Bundesliga».The winning goal for Leverkusen was scored by Ivorian striker Christian Kovani in the 73rd minute, with the help of Algerian Ibrahim Mazza.Leverkusen raised its score to 43 points in sixth place, while Hamburg's score stopped at 26 points in eleventh place.