Two of the World Cup's less fancied nations met in Curitiba, Brazil, on Monday, as Iran faced Nigeria.
The Africans had the majority of first-half possession but Iran came closest to breaking the deadlock when Vincent Enyeama turned away this Reza Ghoochannejhad header:
Unfortunately the second-half failed to muster a clear cut opportunity and the game ended in a dour goalless draw.
Group F opened up on Sunday night with Argentina's 2-1 win over Bosnia-Herzegovina.
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