Anthems done.

Handshakes done.

Team photos done.

Coin toss done.

It's time for some more World Cup football.

Kyle: Looking forward to seeing Ziyech play. He's a brilliant player. Should be a quality game as both sides surely have to win with Portugal and Spain in the same group.

Chris Sutton
Ex-Chelsea striker on BBC Radio 5 live

It is colorful in the stadium. At one end you have got the deep red of Morocco and at the other is the green, white and red of Iran. These are sides that have underachieved at the World Cup but they will see today as an opportunity.

Both sides have qualified for the finals on solid defences but this game is an opportunity to lay down a marker and put pressure on Portugal and Spain.

Here are the anthems - Morocco first, followed by Iran.

BBC Radio 5 live

You can listen to commentary of Morocco v Iran over on BBC Radio 5 live.

Join Alistair Bruce-Ball and Chris Sutton by clicking the tab at the top of this page.

Image source, Reuters

Here come the sides.

Seven Nation Army plays, the crowd gamefully chanting along.

Heck of a noise. Will we get the game to match?

Right, it looks a gorgeous day in St Petersburg for this one.

Morocco are gathered in the tunnel, soon to be joined by Iran.

The two nations' badges have been unfurled on the pitch. Kick-off should be just under 10 minutes away...

Carlos Queiroz has qualified for a World Cup with three countries - South Africa (2002), Portugal (2010) and Iran (2014 and 2018).

The Portuguese quit as South Africa coach prior to the 2002 tournament and went on to became assistant at Manchester United.

His best performance at the World Cup was in 2010, when he led Portugal to the last 16 before being knocked out by eventual winners Spain.

He obviously comes up against his native country later in Group B.

Image source, Getty Images

The charismatic Herve Renard guided Zambia to the Africa Cup of Nations title in 2012, one of the greatest upsets in African football.

He then became the only manager to win the competition with two different teams by guiding Ivory Coast to the 2015 title.

He also used to manage Cambridge United!

This is his first World Cup as manager, meaning the whole world finally gets to see his collection of dashing white shirts...

Image source, Getty Images

Keep your texts and tweets coming in, but you can also get involved by using our player rater.

You'll be able to tap to give your rating for each player out of 10 - it will be available from 30 minutes into the game until 30 minutes after full-time.

I'll give you a heads up.

Image source, BBC Sport

This is also Iran's fifth World Cup appearance, having played in the 1978, 1998, 2006 and 2014 tournaments.

They've never been beyond the group stage and have recorded just one win in 12 games.

That was a famous 2-1 victory over the USA at France 1998.

Russia 2018 is Morocco's fifth World Cup apperances, having played in the 1970, 1986, 1994 and 1998 tournaments.

They've been to the knockout stage once - topping their group in 1986 thanks to draws against Poland and England and victory over Portugal, before losing to West Germany in the last 16.

Their only other World Cup win was a 3-0 victory over Scotland at France 1998.

None of Morocco's 12 goals at the World Cup have been scored from a set-piece, all of them coming from open play.

Okonkwo: OK the Egypt match didn't go as planned but let's go Morocco #teamafrica, external

Hakim Ziyech is Morocco’s star attacker, leading the way with 11 assists in qualifying – more than any other player in Africa. The Ajax playmaker also made a league-high 15 assists in the Eredivisie as he was voted the player of the season.

Image source, Getty Images

So a few names that may be familiar to you on each side. Morocco's starting XI includes Wolves' Romain Saiss and Watford's Nordin Amrabat, as well as Juventus' Mehdi Benatia and Real Madrid's Achraf Hakimi.

Then on the Iranian bench - Nottingham Forest's Ashkan Dejagah and former Charlton striker Reza Ghoochannejhad.

Morocco XI: Munir Mohamedi, Achraf Hakimi, Mehdi Benatia, Romain Saiss, Hakim Ziyech, Karim El Ahmadi, Ayoub El Kaabi, Younes Belhanda, Moubarak Boussoufa, Nordin Amrabat, Amine Harit.

Subs: Yassine Bono, Ahmad Reda Tagnaouti, Manuel da Costa, Nabil Dirar, Hamza Mendyl, Youssef Ait Bennasser, Sofyan Amrabat, Faycal Fajr, Khalid Boutaib, Aziz Bouhaddouz, Mehdi Carcela, Youssef En Nesyri.

Image source, Getty Images

Iran XI: Alireza Beiranvand, Ehsan Haji Safi, Rouzbeh Cheshmi, Masoud Shojaei, Morteza Pouraliganji, Omid Ebrahimi, Karim Ansarifard, Vahid Amiri, Alireza Jahanbakhsh, Sardar Azmoun, Ramin Rezaeian.

Subs: Mohammad Rashid Mazaheri, Amir Abedzadeh, Majid Hosseini, Mohammad Reza Khanzadeh, Pejman Montazeri, Milad Mohammadi, Saeid Ezatolahi, Mehdi Torabi, Mehdi Taremi, Reza Ghoochannejhad, Saman Ghoddos, Ashkan Dejagah.

Image source, Getty Images

Alireza Jahanbakhsh had an exceptional season in the Dutch Eredivisie with Alkmaar and ended the campaign with 21 goals – making him the first Asian player to finish as the top scorer in a European League.

Image source, Getty Images

Mark Lawrenson
Former Liverpool defender on BBC Radio 5 Live

Iran coach Carlos Queiroz is not exactly known for attacking football and Morocco also play in quite a pragmatic style. They only conceded one goal in eight games in qualifying - in a second-round win over Equatorial Guinea.

Looking at the other teams in Group B, you could say that this is a must-win for both sides if they are to have any chance of reaching the last 16, but it is probably more of a 'must-score'.

Prediction: 0-0

Right, the team news has just come out.

Give me a sec, there are a few tricky names in there.