Isco has praised interim Spain coach Fernando Hierro for having the wisdom not to make significant changes since taking the reins from the sacked Julen Lopetegui, as they aim to get their first World Cup win against Iran on Wednesday.
Following a thrilling 3-3 draw to Portugal on Friday, Spain will look to bounce back against an Iran side high on confidence after their late win against Morocco.
The second half saw Spain attack with more intent but it was a stroke of luck that saw them take the lead in the 54th minute.
Spain's Diego Costa (second left) is spoken to by referee Andres Cunha from Uruguay after appearing to stand on Iran goalkeeper Ali Beiranvand foot, who sits on the ground.
Iran equalized the match in the 64th minute but Saeid Ezatolahi's goal was disallowed after VAR rueled it offside.
Carlos Queiroz's team fashioned chances of their own, and came close through Madhi Taremi who put a powerful header over when well placed just 10 minutes from time.
Iran went down narrowly to Argentina at the last World Cup with a similarly battling performance only, exhausted by their efforts, lost 3-1 to Bosnia and Herzegovina in their final group match.
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But the Persians kept their shape superbly, restricting Spain to a handful of chances from David Silva in the first half.
Diego Costa was the star against Portugal with a brace, but Iran are likely to be rather more compact than the European champions.
"Everybody knows that Spain is one of the greatest teams in football history, and one thing that we can guarantee is that the Spanish team will not have an easy time against us", he told reporters.
Patience is a virtue, and Spain showed plenty of it to overcome a tough challenge from Iran at the World Cup.
With qualification for the knockout phase yet to be sealed, Spain will be reliant on Silva, as well as his midfield colleagues, to clinch their round two berth with a victory against Morocco. Labelled the "Iranian Messi" Azmoun will be facing Spain in the familiar surroundings of the Kazan Arena.
It was far from a handsome win, but the goal was enough to make Spain coach Fernando Hierro smile. Fubo TV also offers three days of auto recording and 30 hours of Cloud DVR service in case you're busy at work for the Spain Iran soccer game.
The FIFA World Cup 2018 Iran vs Spain match will take place on Wednesday, June 20, 2018. He has scored three goals in two matches, but he can do even better.