Borussia Dortmund fans were involved in clashes with police in Lisbon on the eve of Wednesday’s Champions League match against Sporting.
Three Dutch top-flight matches were briefly interrupted when fans defied lockdown rules by breaking into stadiums.
Rangers and Hibs fans brawled on a motorway in Glasgow ahead of their Scottish League Cup semi-final at Hampden Park on Sunday.
Gremio fans stormed the pitch and smashed up the VAR system following their side’s 3-1 home defeat to Palmeiras on Sunday.
CSKA Sofia and Lokomotiv Plovdiv fans clashed at the Bulgarian Army Stadium before their match on Sunday.
Heracles Almelo and Ajax fans were involved in a brawl during Saturday night’s match at the Polman Stadium.
West Ham and Tottenham fans came to blows at the London Stadium during half-time of Sunday’s Premier League match.
Trouble flared at the Letzigrund Stadium after Saturday’s Zurich derby as Zurich hooligans tried to get at Grasshoppers fans.
Cologne hooligans attacked Genk fans during their Youth League match at Genk’s training ground on Tuesday.
NEC Nijmegen fans clashed with riot police after their 1-0 defeat to arch rivals Vitesse in the Eredivisie on Sunday.
Sunday’s derby clash between Spartak Trnava and Slovan Bratislava descended into chaos as fans clashed on the pitch.
Hungary fans clashed with police at Wembley during their side’s World Cup 2022 qualifier against England on Tuesday evening.