Universidad de Chile fans clashed with riot police at Santiago’s National Stadium before their match against Colo Colo on Saturday.
Around 200 Lazio hooligans clashed with riot police near the Stadio Olimpico ahead of the side’s Italian cup final against Atalanta on Wednesday.
Grasshopper Club Zurich fans forced the side’s players to hand over their shirts during Sunday’s Swiss Super League match at FC Luzern.
A brawl broke out between Wloclavia Wloclawek and Legia Chelmza fans during their Polish IV Liga match on Sunday.
PAS Giannina fans clashed with riot police during their side’s defeat to PAOK on Sunday 5th May.