Every single Klassiker looms large on the German football calendar, and Saturday’s edition will see Bayern Munich host Borussia Dortmund aiming to build a gulf between the two sides at Allianz Arena.

Álex Grimaldo scored twice and was booked for complaining as Bayer Leverkusen almost squandered a two-goal lead before beating Mainz 4-3 in the Bundesliga on Saturday.