Cologne - This Saturday sees two modern rivals of the German game go head to head for the 92nd time as the Bundesliga's very own Klassiker hits the Signal Iduna Park (kick-off 18:30 CEST / 16:30 GMT).
There may be ten positions and 31 points between the two sides coming into this Matchday 27 encounter, but as soon as the two sides march out of the tunnel side by side this Saturday, there will be little between them.
bundesliga.com previews one of the biggest games on the European club calendar.
Click here to find your local broadcaster for this match.
Dortmund: Weidenfeller - Sokratis, Subotic, Hummels, Durm - Gündogan, Bender - Kampl, Kagawa, Reus - Aubameyang
Bayern: Neuer - Rafinha, Benatia, Boateng, Bernat - Lahm - Xabi Alonso, Schweinsteiger, Müller, Götze - Lewandowski
To see how passionate previous Klassikers have been, check out this video courtesy of the Bundesliga's official YouTube channel.