Bayern Munich 1-0 Cologne

Robert Lewandowski scored his 15th goal in 16 league games as Bayern Munich beat Cologne to move nine points clear at the top of the Bundesliga.

Bayern's performance was below par but the Poland international earned his side victory in the 60th minute when he tapped home after being set up by captain Thomas Muller.

Lewandowski now has 21 goals in all competitions this season.

Cologne, meanwhile, are without a win and are now 13 points from safety.

"We didn't do enough and didn't let the ball run," said Muller.

"You can't attack against every opponent like we did in the second half - we have to do more."

Bayern have won 13 of their 14 games since Jupp Heynckes replaced Carlo Ancelotti as coach at the start of October.