Former Borussia Dortmund and Bayern Munich coach Ottmar Hitzfeld believes Lucien Favre's men have crucial "momentum" going into this weekend's Klassiker.
Dortmund travel to Munich with a two-point advantage over their title rivals after Bayern surprisingly dropped points against Freiburg last time out.
With only six rounds of games remaining after Saturday's match at the Allianz Arena, a win would be a huge boost for either side.
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Hitzfeld – who coached Dortmund between 1991 and 1997 before two spells in charge of Bayern – expects a fierce battle, but believes the current pacesetters have an advantage given the last-gasp nature of their win against Wolfsburg last weekend.