In pictures: Spain edges past tenacious Iran

Diego Costa's 54th minute strike helped Spain to victory over Iran after Saeid Ezatolahi's equalizer was ruled out for offside.

Lucas Vazquez started ahead of Koke in the attack and Dani Carvajal replaced Nacho in defence for Spain.(Getty Images) Photo: Getty Images
Iranian fan enjoys the atmosphere in Kazan Arena ahead of the kick off between Spain and Iran.(Getty Images) Photo: Getty Images
Diego Costa scored his third goal of the tournament, now stands one goal behind club rival Cristiano Ronaldo for the Golden Boot.(Getty Images) Photo: Getty Images
Iranian keeper Ali Beiranvand makes an acrobatic save to keep David Silva's shot out of the goal.(Getty Images) Photo: Getty Images
Referee Andres Cunha awards goalkick to Spain after Iran's Saeid Ezatolahi was deemed offside while scoring the equalizer.(Getty Images) Photo: Getty Images
Sergio Ramos and Gerard Pique celebrate Spain's win after full-time whistle. The win puts Spain on verge of qualifying for the Round-of-16 alongside Portugal.(Getty Images) Photo: Getty Images