Real Sociedad and Real Betis drew 0-0 in the Spanish league on Friday after a fan clash injured a group of Betis supporters.
Spanish media said a group of ultra Sociedad fans attacked around two dozen Betis fans in the streets of the Basque city of San Sebastián, leaving four of them slightly injured. Police said two people were arrested after the incident.
Both clubs condemned the violence.
The draw kept Sociedad and Betis in the fight for a Champions League spot with six rounds remaining.
Fifth-placed Betis could have edged past Atletico Madrid and taken fourth with a win, while sixth-placed Sociedad could have played even with Atletico before the defending champions host Espanyol on Sunday.
The match was one of two league matches for Betis before playing in the Copa del Rey final against Valencia on April 23. Manuel Pellegrini’s side host Elche on Tuesday.
Veteran Sociedad playmaker David Silva was sent off in stoppage time after receiving two yellow cards within minutes of each other.
Sociedad are unbeaten in their last seven league home games and haven’t conceded a goal. Betis are unbeaten in five consecutive league matches.
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