Borussia Dortmund extended its lead at the top of the Bundesliga standings with a 4-0 victory at Hannover on Sunday.
Shinji Kawaga, Lucas Barrios, Robert Lewandowski and Jakub Blaszczykowski scored for Dortmund, which also missed a penalty by Nuri Sahin in the 78th minute after Hannover's Karim Haggui was red carded.
Mainz and Hoffenheim both lost on Saturday while Bayern Munich could only salvage a draw with Gladbach, thus allowing Dortmund to stretch its lead. Dortmund is also undefeated in 10 games, a streak that includes nine victories.
Juergen Klopp's team has 28 points from 11 games for a four-point lead on Mainz, nine points up on third place Eintracht Frankfurt and a 10-point cushion over five teams on 18 points.
Reigning champion Bayern Munich is ninth with 16 points.
"The table shows that we have played a great season until now nothing more or less," Dortmund keeper Roman Weidenfeller said. "Of course you want to win every game. Then you deserve to be on top. But we have a lot of games ahead of us."
Weidenfeller said a victory on Sunday was particularly important because the schedule over the next three weeks does not include Europa League matches during the week.
"We said to ourselves going in, let's push one more time really hard because we knew Hannover would be going after us and that we would have a bit of a break afterwards," Weidenfeller added.
Sidney Sam scored two goals as Bayer Leverkusen came back from an early deficit to defeat Kaiserslautern 3-1 at home to jump to third place with 21 points.
Florian Dick had given Kaiserslautern the lead after 15 minutes but Sam equalized after 38 minutes and Patrick Helmes put his side ahead in the 68th minute. Sam added his second goal in the 84th.
Kaiserslautern has lost six of its last seven games to remain on 10 points in 15th place.
Stuttgart moved out of the relegation zone with an impressive 6-0 home victory over Werder Bremen.
Cacau scored twice in giving Stuttgart a 3-0 lead in the first half, although he missed a penalty in the second half. Bremen captain Torsten Frings also saw his penalty saved by Sven Ulreich in the 24th minute with his team down just 1-0. Frings had scored his previous 19 penalty kicks.
Goals from Christian Gentner, Georg Niedermaier and Arthur Boka completed the rout in the second half. Stuttgart has 10 points for 14th place while Bremen is in 11th place with 14 points.
In Hannover, Dortmund dominated ball possession in the early going and took the lead through the Japanese international Kawaga, who struck a fine goal just inside the right post with a left foot blast in the 11th minute.
The top offense in the league continued its march forward and doubled the advantage with a precise counter attack over the right side with Lukasz Piszczek crossing to Barrios, who held off two defenders to make it 2-0 after 72 minutes.
Referee Felix Brych sent off Tunisian international Haggui in the 77th minute for kicking Blaszczykowski in the head in the area resulting in a penalty, which Sahin could not convert with a spot kick down the middle.
Lewandowski finished off Hannover with his goal after 81 minutes and Blaszczykowski made it 4-0 in the 90th minute.
