10-man Bayern Munich recorded a clean sheet on Saturday as they overcome Stuttgart oat the Alianz Arena.
Poland striker Robert Lewandoski netted a hat-trick in the first half to push his goals in all competition this season to 42 which is a personal best record for himself.
Alphonso Davies was sent out early in the 12th minute when he fouled Wataru Endo of Stuttgart but that did not deter the Bundesliga champions who got their first goal through Lewandoski in the 17th minute.
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Serge Gnabry doubled the lead six minutes later before the Poland striker completed his hat-trick taking Bayern Munich four points clear at the top of the table with 61 points from 26 matches played.
In the other match of the day, Borussia Dortmund stalled in their quest for a top four finish when they were held away at Koln in the evening.
Erling Haaland opened scoring for the visitors in the third minute but the lead was equalized in the 35th minute by Duba through a penalty.
Jakob doubled the lead for Koln in the 65th minute when he accurately sent a shot toward the far top of the net taking Dortmund to the drawing board.
Haaland missed a perfect opportunity to level things up when his shot went wide and his header was saved by the keeper shortly afterwards. He however found the back of the net at the end of regular play time.
The draw leaves Dortmund in fifth position with 43 points, 4 points shy of fourth placed Frankfurt and 18 points a drift of leaders Bayern Munich.