Paul Lambert has claimed his Borussia Dortmund have to win the biggest grudge match in German football on Tuesday night to stay in the Bundesliga title race.
The Scot insists Der Klassiker clash between his former club and Bayern Munich rivals the Old Firm clash for intensity. The two German clubs not only hail from the historic warring states of Bavaria and Prussia, they also have conflicting images with Dortmund traditionally a working-class club against the glamorous Munich outfit nicknamed FC Hollywood.
The rivalry has become the biggest in the Bundesliga this century with the two clubs meeting in the 2013 Champions League final at Wembley.
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