Ivica Olic put Bayern ahead but Christian Traesch and Ciprian Marica scored for Stuttgart to hand Bayern its first loss in 17 home games. Bayern's afternoon got worse when Dutch international Arjen Robben pulled up lame, an injury that could prove costly ahead of Tuesday's Champions League quarterfinal tie against Manchester United.

Bayern will be knocked out of first place in the Bundesliga if Schalke beats Bayer Leverkusen later Saturday.

In other games, Werder Bremen beat Nuremberg 4-2, Cologne won 4-1 in Hannover, Wolfsburg was a 2-0 winner in Mainz and Borussia Dortmund drew 0-0 at Hertha Berlin.

Bayern coach Louis van Gaal started with Robben and France playmaker Franck Ribery on the bench after Wednesday's extra-time win over Schalke in their German Cup semifinal.

Both came on after the break but neither made much of an impact. Robben pulled up lame with a left-calf injury after a late shot; his absence from Tuesday's tie against Manchester United would be a serious blow to Bayern's European ambitions.

Stuttgart started brightly against the Bundesliga leaders, Sami Khedira forcing goalkeeper Joerg Butt into a save in the 24th minute. At the other end, Daniel van Buyten came close for Bayern.

Olic opened the scoring for Bayern in the 32nd, connecting with a low cross from Croatia teammate Danijel Pranjic to bury the ball into the roof of the net.

But Stuttgart was uncowed and Traesch equalized in the 41st when his shot from 20 meters (yards) was deflected past Butt and into the net.

Stuttgart kept pressing. Timo Gebhart tested Butt, who barely managed to turn away his shot, before Marica scored the winner in the 50th.

Bayern's defense failed to clear a corner and Cacau floated a cross to the far post, where the unmarked Marica nodded the ball home.

Bayern should have equalized when Miroslav Klose's header off a cross from Philipp Lahm hit Stuttgart goalkeeper Jens Lehmann, but was also fortunate when Zdravko Kuzmanovic narrowly missed the target in the 78th after shaking off Bayern defender Diego Contento.

“Stuttgart is a good team and it created chances,” van Gaal said. “We conceded an unlucky goal on a deflected shot and we were unlucky in front of Stuttgart's goal.” Bayern faces a series of decisive games, with another trip to Schalke on April 3, the return leg at Manchester United, and a visit to third-place Leverkusen in the Bundesliga.

Lehmann, the Stuttgart goalkeeper, said Bayern, which lost 2-1 at Eintracht Frankfurt last week, could be feeling the burden of playing in three competitions.

“We have only one game a week and maybe we were the fresher team,” Lehmann said.

Werder Bremen, which will play Bayern in the German Cup final, moved closer to a place in next season's Europa League by beating Nuremberg behind two goals from Germany defender Per Mertesacker.

Tim Borowski added another one before halftime and Werder appeared to be cruising until Nuremberg pulled two back through Mike Frantz and a penalty from Eric Maxim Choupo-Moting. Clemens Fritz secured the win in stoppage time.

Cologne got two goals from Zoran Tosic and one each from Milivoje Novakovic (penalty) and Armando Petit to end Hannover's two-game winning run. Steve Cherundolo scored from a late free kick for Hannover, which finished with 10 men after Hanno Balitsch was sent off.

Edin Dzeko scored both goals for Wolfsburg late against Mainz to bring his season total to 16.

Bottom-place Hertha had a late strike by Fanis Gekas disallowed for offside and is now four points behind Freiburg and Hannover.