Bremen, Germany (SportsNetwork.com) - Bayern Munich will look to make it 40 straight Bundesliga matches without defeat when the club heads to the Weserstadion to face Werder Bremen on Saturday.

The European champions, who last lost in Bundesliga action in October 2012, are in fine shape this season, entering the weekend four points clear atop the league while having qualified for the last 16 of the Champions League and advanced to the quarterfinal in the German Cup.

But Bayern is refusing to rest on its laurels with Matthias Sammer, the club's Director of Sport, insisting there is plenty more to come.

"We have only been German champions once in the last three years," said Sammer. "There is this stupid debate about how dominant we are, which is superficial and implies we should win games like this, just by turning up."

Bayern, however, has managed to win matches this season simply by turning up. The Bavarians have dropped points just twice this term and were far from their best in their last Bundesliga outing when they managed a 2-0 win over lowly Braunschweig.

But the reigning champions will find Saturday's tilt at Bremen to be a bit more difficult due to their injury concerns. Arjen Robben will miss the trip with a knee injury while captain Philipp Lahm and star midfielder Bastian Schweinsteiger are set to miss the contest as well, but Pep Guardiola will have Franck Ribery available for selection as the France international has resumed training following a rib injury.

While Bayern looks to extend its lead atop the Bundesliga, second place will be up for grabs when Borussia Dortmund and Bayer Leverkusen, separated by three points, meet at Signal Iduna Park on Saturday.

Also on Saturday, Borussia Monchengladbach and Schalke square off in a massive clash at Borussia Park, Hoffenheim will look to snap a four-game winless run when it heads to Commerzbank Arena to face Eintracht Frankfurt, Stuttgart will hope to rebound from back-to-back defeats when it welcomes Hannover to the Mercedes Benz Arena, and Augsburg will look to gain further separation from Hamburg when the two sides meet at the Imtech Arena.

On Sunday, last-place Braunschweig hosts Hertha Berlin and Wolfsburg travels to Freiburg, while Friday's lone Bundesliga contest saw Nurnberg squander a one-goal lead to settle for a point in a 1-1 draw with Mainz.