Dortmund and Schalke hooligans clashed briefly at the Westfalenstadion after their Bundesliga match on Saturday.
Karlsruher hooligans clashed with their Waldhof Mannheim rivals in the southwest German city of Mannheim on Wednesday.
Bayern Munich and Wolfsburg hooligans clashed in a mass brawl before yesterday's Bundesliga match.
Hertha Berlin ultras clashed with riot police at the Westfalenstadion during Saturday's Bundesliga match with Borussia Dortmund.
Hamburg fans delayed the end of their Bundesliga match against Gladbach on Saturday after learning their side will be relegated to the second tier.
Schalke and Eintracht Frankfurt hooligans clashed in the stands following the full-time whistle of their DFB Pokal match on Wednesday.
Borussia M'gladbach hooligans managed to pinch a Köln flag during Köln's away match against Hoffenheim on Saturday.
FC Köln hooligans managed to pinch a flag from Borussia M'gladbach ultras during the half-time break of Sunday's Bundesliga match.
Holstein Kiel hooligans stormed the pitch in an attempt to attack their St. Pauli rivals in 2. Bundesliga match on Tuesday.
A German Cup first round game between Hansa Rostock and Hertha Berlin on Monday night was halted twice due to fan trouble.
Friday's Regionalliga Nordost match between Babelsberg and Energie Cottbus was halted twice because of fan trouble.
A mass brawl erupted on the streets of Berlin on Saturday ahead of the Hertha BSC vs Eintracht Frankfurt Bundesliga clash.