Bayern Munich are starting to pile on the pressure now, with Borussia Dortmund having to defend for their lives as the hosts attempt to turn the screw. A Franck Ribery-inspired attack ends up with the ball ricocheting around Roman Weidenfeller's area until the visitors were finally able to clear and launch an attack of their own, which is eventually thwarted when Shinji Kagawa inadvertently blocked Kevin Grosskreutz's cross.
Most teams going up against Bayern, especially away from home, wouldn't attack like crazy rabid badgers, but Dortmund clearly feel that they can get three points from this match and so are pouring forward whenever they can. So far, it's worked well enough - Bayern have edged proceedings so far but still haven't scored, nor have the come particularly close to doing so. The longer the match goes scoreless, the more likely that Dortmund can nick a goal (and maybe all three points) on the break.