BERLIN — Mohammed Abdellaoue broke Bayern Munich's eight-game Bundesliga run without conceding a single goal when he scored from a penalty in a 2-1 win for Hannover on Sunday, with both teams reduced to 10 men.
Abdellaoue scored in the 23rd minute, after Bayern captain Philipp Lahm brought down Hannover captain Steve Cherundolo in the penalty area.
Manuel Neuer guessed the right way but Abdellaoue struck the ball inside the left post to end the goalkeeper's record of 770 minutes without conceding in the Bundesliga.
Bayern defender Jerome Boateng was sent off five minutes later for hitting out at Christian Schultz, who was booked, after players from both sides became embroiled in a melee after Bayern defender Rafinha cut down Sergio Pinto.
Christian Pander scored Hannover's second in the 50th, his effort taking a big deflection off Luiz Gustavo to deceive his former Schalke teammate in the Bayern goal.
United States defender Cherundolo was sent off for a second yellow card after he held Franck Ribery back in the 63rd.
Bayern substitute David Alaba scored a late consolation in the 83rd, when he converted Lahm's cross with a low shot to the left corner.
Bayern missed the chance to go six points clear of second-place Borussia Dortmund after its first defeat since the opening weekend.
Earlier Sunday, Jefferson Farfan scored late in his 100th Bundesliga appearance for Schalke in a 1-0 win at Bayer Leverkusen, to move his side to third.
Farfan scored in the 82nd minute on a counterattack when he beat Andre Schuerrle to the ball and ran to the other end of the pitch before slotting past Bernd Leno off the far post.
Former Germany captain Michael Ballack was booked for complaining that the Peru winger fouled Schuerrle before he set off on his run.
The goal came one minute after Schalke's Jermaine Jones appeared fortunate to escape a second yellow card for a foul on Michal Kadlec. United States midfielder Jones had been involved in a series of run-ins with Ballack, who pushed the back of Jones' head before a corner and later became involved in a dispute with Schalke coach Huub Stevens.
Ballack had a goal ruled out for offside in the 25th and should have scored before the interval when he shot straight at Lars Unnerstall, playing in place of Schalke's injured No. 1 Ralf Faehrmann.
Raul Gonzalez went close for Schalke either side of the break, and Jones might have scored in the 57th, when he fired over from 18 meters (yards).
In Hannover, Lars Stindl might have made it 2-0 before the break, when he hooked Abdellaoue's fine cross over from two meters (yards) under pressure from Lahm.
Zieler denied Germany teammate Gomez twice in quick succession after the break, the second save outstanding in the 49th.
Bayern found it hard to get past the well-drilled Hannover defense but began to find gaps after Cherundolo's sending off.
Bastian Schweinsteiger hit the post with two minutes remaining, and Bayern's penalty appeals were turned down when Lahm fell under Konstantin Rausch's challenge in a race for the rebound.
Rausch tried to catch Neuer out of his goal in injury time but fired wide, and Alaba sent a free kick narrowly wide in injury time.