Morocco were dominant in the early stages and looked for an early goal, while Iran were struggling to get out of their own half in the first quarter of an hour.
Defensive midfielder Saeid Ezatolahi is suspended for Iran and will miss the match.
Morocco in particular have been in excellent form, winning four and drawing one of the five games they've played since reaching the tournament.
Iran coach Carlos Queiroz is refusing to be distracted by Spain's coaching calamities as his team prepare to kick off their 2018 World Cup campaign against Morocco in Saint Petersburg. They do not want to see players who are just coming (here).
FC's Stewart Robson wasn't overly impressed with Iran and doesn't feel there's a way back for Morocco after their late capitulation.
Morocco's impeccable record in qualifiers of not conceding a single goal will play a massive role in Renard and his team selections.
"Superman is only in the cartoons", Queiroz said.
Mustapha Hadji believes Morocco must play with "guts and heart" if they are to enjoy a successful World Cup in Russian Federation.More news: An Angry Ronaldo Refuses to Renew Contract With Real Madrid
Renard knows, if there is any chance for Morocco to get past this group and into the knockout phase, they have to make this game against Iran count and grab all three points. Morocco started well but then faded.
Morocco, chief instigators of the vuvuzela revival, lost out in their attempt to host the 2026 World Cup, beaten by the joint US/Canada/Mexico bid, which means, thankfully, the vuvuzela's imprint on major worldwide football tournaments will be a temporary one.
"We are in this World Cup under the umbrella of Federation Internationale de Football Association and the main value of Federation Internationale de Football Association it is to put politics apart, but this is not what is going on", he said.
If one team can nick the win, it might be Morocco.
- Aziz Bouhaddouz's own-goal in the 95th minute was only the second own-goal scored in the 90th minute in a World Cup match, after Joseph Yobo for Nigeria against France in June 2014.
The north African nation's most obvious weakness is in goal, as first-choice keeper Munir Mohamedi has barely featured for second-division Spanish side Numancia all season.
"We made mistakes in the build-up to the goal against a team that was on the back foot for most of the match and that's one of the factors that led to this crucifixion", he said.