Bayern Munich captain Philipp Lahm has admitted that the team are finding it "tough" coming up against defence-minded sides after the goalless draw with Eintracht Frankfurt.

Pep Guardiola's side were denied an 11th successive Bundesliga win as the hosts fought impressively to claim a point, and Lahm was left frustrated by the tactics adopted by Frankfurt boss Armin Veh.

"You don't think it can get more defensive, and then another opponent arrives and they are...it's tough," the World Cup winner told reporters.

"I don't know what formation Eintracht Frankfurt were playing today. I think 6-3-1. It was tough."

Borussia Dortmund beat Werder Bremen 3-1 on Saturday to cut Bayern's lead at the top of the table to five points.