Angry Antwerp fans staged riots after their football team missed the league title in the second division.
Trouble erupted at Saturday's Serbian Super Liga clash between Crvena Zvezda and Partizan as rival fans threw flares and seats at each other and riot police.
A fight broke out between rival fans during Friday’s Dublin derby between Bohemians and Shamrock Rovers at Dalymount Park.
Two Ruch Chorzów fans clashed with away fans.
A Rapid București fan snatched a banner from Rapid CFR Suceava fans during their Liga II match at the Areni Stadium on Sunday.
Manchester United and Liverpool fans clashed in the stands at Old Trafford.
Guaraní Antonio Franco fans fought among themselves in the stands during their Torneo Federal A match with Sol de América on Monday.
Fortaleza and Sport Recife fans clashed during the half-time.
Tottenham and Arsenal fans clashed ahead of the north London derby.
PAOK's Greek Cup semi-final against Olympiacos was abandoned on Wednesday as home fans clashed with riot police on the Toumba Stadium pitch.
Marseille fans wreak havoc on the streets of Bilbao.
Diagoras fans invaded the pitch and attacked Ialysos fans.