Bayern Munich's Arjen Robben (L) fights for the ball with Freiburg's Pavel Krmas during their German first division Bundesliga soccer match in Munich December 16, 2014 (Photo: Reuters)
Arjen Robben scored his 100th goal for Bayern Munich in a 2-0 victory over Freiburg on Tuesday that stretched his team's unbeaten run to 20 matches in the Bundesliga.
Thomas Mueller added another goal after the break as coach Pep Guardiola celebrated his 50th match in charge with another victory. Since he took over as coach last season, Guardiola has six draws and two defeats to go with 42 wins in the Bundesliga.
Elsewhere, 10-man Stuttgart held on for a 1-0 victory at fellow struggler Hamburger SV, Hannover beat Augsburg 2-0 and Mainz drew 0-0 in Cologne.
Stuttgart's second away victory under new coach Huub Stevens lifted the team from the bottom of the table, at least until the 16th round is completed on Wednesday.
Robben scored in the 41st after Xavi Alonso sent a long ball to Franck Ribery. The Frenchman nodded the ball down for Robben and the winger headed home from close range.
Mueller completed the win in the 48th, with another close-range header after an effort by Juan Bernat had crashed off the crossbar.
"We could have scored a few more goals but it's good to win, no matter what the result is," Mueller said. "They defended with five, six men in their area and they defended well. How many goals we score is not important, we did what we set out to do and that was to win."
Bayern outshot Freiburg 30-2.
"They were so dominant, we couldn't do anything," Freiburg's Julian Schuster said.
In Hamburg, Florian Klein capitalized on an error by Rafael van der Vaart to score the winning goal shortly before halftime and Stuttgart protected the victory despite losing Georg Niedermeier to a red card in the 53rd. Van der Vaart, the Hamburg captain, fired against the crossbar from the ensuing free kick.
Stuttgart rose to 15th, just behind Hamburg.
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