A lucky goal by Atletico Madrid striker Diego Costa handed Spain their first win of the tournament following a 3-3 draw with Portugal last week.
Iran, 1-0 winners over Morocco, fought a valiant battle in Kazan to maintain hopes of qualifying for the last 16. They next face Portugal in Group B.
The Iranians thought they had scored an equalizer, but Saeid Ezatolahi's header was disallowed for offside after the referee consulted the Video Assistant Referee.
"He went to the hospital. We hope everything will be alright." "Our prayers go out to him at this moment."
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