Having won the second division title last season, Karlsruhe had Hungarian international midfielder Tamas Hajnal to thank as his goals either side of half time sealed the 2-0 win at German Cup holders Nuremberg.

"We have only won one game, but the three points is important to us," Karlsruhe coach Eduard Becker.

"We have still 33 difficult games ahead of us. We made mistakes, especially in the first-half and we still have a lot of work to do."

Fellow promoted side Duisburg enjoyed a convincing 3-1 win over Borussia Dortmund thanks to Nigerian striker Manasseh Ishiaku who bagged goals either side of the break.

Ishiaku put his side 1-0 up after eight minutes before Romanian midfielder Mihai Tararache converted a 62nd minute penalty.

The Nigerian then struck again two minutes later before Dortmund's Florian Kringe grabbed a late consolation goal.

Dortmund coach Thomas Doll was bitterly disappointed with his side's performance.

"The football we showed today was more akin to the sort of thing you see on a practice field," the coach grumbled.

And his Duisburg counterpart Rudi Bommer also had his feet firmly on the ground.

"We played well in places, but we have nothing to celebrate. This was only the first game of the season and we only have three points," he said.

On Saturday, Bayern Munich's 23-million-euro strike force of Luca Toni and Miroslav Klose gave their employers an instant return as newly-promoted Hansa Rostock were beaten 3-0 at the Allianz Arena.

Bayern top the Bundesliga after the opening weekend on goal difference as they start their campaign to win their 21st crown as German champions.

Bayern's 69 million euros summer spending spree was rewarded after just 14 minutes as Klose, a 12-million-euro signing from Werder Bremen, drew the goalkeeper for 11-million-euro man Toni to knock the ball into an empty net.

Klose, the top-scorer at last year's World Cup, put Bayern 2-0 ahead as he followed up defender Philipp Lahm's shot to slot home on 66 minutes, before adding his second on 84 minutes, heading home Lahm's cross.

Last season's third place finishers Werder Bremen charged into a 2-0 lead against Vfl Bochum with Brazilian midfielder Diego and summer signing Boubacar Sanogo netting, before Bochum fought back in a 2-2 draw.

Hamburg started the season with a 1-0 win over Hanover, while Eintracht Frankfurt enjoyed a 1-0 win over Hertha Berlin after Greek striker Ioannis Amanatidis struck with a header on 31 minutes.

Bayer Leverkusen and Energie Cottbus played out a 0-0 draw, while Arminia Bielefeld enjoyed a 3-1 win at VfL Wolfsburg with goals from Polish striker Artur Wichniarek, fellow forward Christian Eigler and defender Oliver Kirch.

And on Friday, last season's runners-up Schalke 04 came away from defending champions VfB Stuttgart with a precious point after a 2-2 draw.