BERLIN, Sept 30 (Reuters) - Defender Christian Schulz scored twice to lead Hanover 96 to a 2-1 victory over MSV Duisburg in the Bundesliga on Sunday while Energie Cottbus let slip a 2-0 half-time lead against Eintracht Frankfurt. Schulz scored in the seventh minute and got the match winner just past the hour. Nigeria's Manasseh Ishiaku scored in the 20th minute for Duisburg with his fifth goal of the season. Hanover climbed to seventh place with 13 points. It was the fourth successive defeat for newly promoted Duisburg, who fell into the relegation zone with six point. In Sunday's other match, bottom club Energie Cottbus had a 2-0 lead at half-time in new coach Bojan Prasniker's first match thanks to early goals from Dimitar Rangelow goals. Greece striker Ioannis Amanatidis got one back for Eintracht Frankfurt in the 49th minute and equalised with a penalty 11 minutes from time. On Saturday, Bayern Munich beat Bayer Leverkusen 1-0 in a top-of-the-table clash. Italy striker Luca Toni got the match winner just before half-time, his sixth goal of the season, after tapping in a superb cross from Miroslav Klose. Werder Bremen tuned up for their Champions League match against Olympiakos Piraeus on Wednesday by crushing Arminia Bielefeld 8-1.