Image source, Sharemytactics

Cameroon line up in a 4-3-3 formation, with Samuel Eto'o the focal point of their attack. Their pacy frontline could be key to snatching a victory against Mexico, particularly with the ageing Rafael Marquez in the centre of their defence.

Mexico: Ochoa, Layun, Moreno, Marquez, Rodriguez, Aguilar, Guardado, Vazquez, Herrera, Giovani, Peralta. Subs: Corona, Salcido, Reyes, Fabian, Jimenez, Pulido, Hernandez, Ponce, Brizuela, Aquino, Pena, Talavera.

Cameroon: Itandje, Djeugoue, N'Koulou, Chedjou, Assou-Ekotto, Song, Mbia, Enoh, Moukandjo, Eto'o, Choupo-Moting. Subs: Feudjou, Nounkeu, Aboubakar, Makoun, Bedimo, Webo, Fabrice, Salli, Matip, Nyom, N'Djock.

Referee: Wilmar Roldan Perez (Colombia)

Chelsea forward Demba Ba:, external All the best to Samuel Eto'o. I'm watching you. Strength and honour.

Andy via text: It looks like there are more Mexican fans inside the Estadio das Dunas in Natal than there were Brazilian fans inside the stadium in Sao Paulo for the World Cup opener on Thursday. Remind me, whose home World Cup is this again? Unbelievable travelling support from the Mexicans.

Cameroon are competing in their seventh World Cup - an African record - after finishing top of their qualifying group, but their path to the finals was not without its problems.

They used three coaches, produced a number of disjointed performances while soon-to-be-out-of-contract Chelsea striker Samuel Eto'o claimed his teammates were conspiring in a "plot not to pass to me"., external

Even in the days before the tournament, there were signs of a lack of unity as the players refused to travel to Brazil because of a dispute over bonuses. An agreement was ultimately reached and it will be the job of coach Volker Finke to prove none of those issues will affect performances on the pitch.

Image source, Getty Images

So to Cameroon.

It seems like a long, long time ago since Roger Milla danced his famous dance as the African side surprised all to reach the quarter-finals of Italia 1990.

But since then the Indomitable Lions have been, well, not so indomitable, particularly in the last World Cup when they finished bottom of their group after losing all three of their games to Japan, Denmark and the Netherlands.

The Lions' pride is at stake in Brazil.

Image source, Getty Images

Brazil, Argentina and Spain are among the favourites to win the World Cup but no doubt plenty of you out there will have pulled out a less-than-fancied team in the office sweepstake.

However, worry not as your £2 might not go completely to waste. There have been plenty of underdog stories at World Cups over the years, with Cameroon's magical run to the quarter-finals in 1990, South Korea's sparkling semi-final run in 2002 or even Australia's passage to the knockout stage eight years ago.

Mexico coach Miguel Herrera believes his side can go all the way this year so, with that in mind, which team do you think will provide the underdog story of 2014 and why? Can anyone outside the favourites claim a surprise victory?

Let us know via #bbcworldcup,, external text us on 81111 or have your say on the BBC Sport Facebook, external and Google+, external pages.

As terrible as Mexico's qualifying campaign was, it did result in some absolute commentary gold.

When the USA equalised against Panama, the Mexican TV commentary on the game erupted: "GOAAAAAAAL!! The USA puts us in the play-offs! It is because of the USA ...not any of you in the green shirts...they did it, not you! You do nothing for the shirt, you do not put in any effort for the team....Mexico is a horror, just terrible. A failure."

Miguel Herrera needs to stick that up in the Mexico dressing room before kick-off. Surely it will be all the motivation they need?

Just how Mexico struggled so badly to qualify for the World Cup is a mystery after a hugely impressive 2012.

They won just two of their 10 Concacaf group games, three managers came and went, before two late, late goals gave the USA a win in their final qualifying game against Panama, denying the latter a play-off spot, with Mexico snatching it instead.

Miguel Herrera, Mexico's fourth coach in six weeks, got them over the line with a comfortable victory against New Zealand in the play-off to secure their World Cup place and a nation sighed in relief. Can they now go on to cause a shock?

Image source, Getty Images

Mexico are fantastically consistent at World Cups, having reached the last 16 in each of the previous five tournaments.

It has, though, been a while since they progressed further than that, 28 years to be exact, when they were knocked out on penalties by West Germany in the quarter-finals of the 1986 World Cup, a tournament they hosted.

Hopes they could, at the very least, replicate that achievement this time were raised when they had a stunning 2012 - winning 10 of 12 internationals and taking Olympic gold with victory against Brazil.

Those hopes, though, were dashed by a nightmare World Cup qualifying campaign...

BBC Radio 5 live

BBC Sport's Darren Fletcher in Natal: "Roads are underwater around the ground in Natal. We are concerned we might get blown away. It's blowing a gale. It's been raining all the way through and it's going to make it treacherous under foot for both teams."

BBC Radio 5 live

BBC Radio 5 live has already started its build-up to the game, with full match commentary to follow from 17:00 BST.

You can then watch highlights on the website as soon as the game finishes, with extended highlights on World Cup Match of the Day on BBC Two, Saturday, 14 June at 10:30 BST.

For information on how to follow all of the World Cup games on the BBC, head to the BBC Sport website.

Mexico boss Miguel Herrera's team line-up confirms that he has left out Manchester United striker Javier Hernandez as he opts for Giovani Dos Santos up front with Oribe Peralta. Guillermo Ochoa also gets the nod instead of Jesus Corona in goal.

Cameroon striker and captain Samuel Eto'o starts despite concerns over his fitness, while midfielder Stephane Mbia is also passed fit to play.

Robbie Savage
BBC Radio 5 live in Natal

Image source, @robbiesavage8

"I've never seen rain like it. The weather is horrendous but the pitch is fantastic. This is Brazil's group so both of these teams will be going for the win. I fancy Cameroon. I watched them recently in a friendly against Germany that finished 2-2. I was impressed with them."

BBC World sports reporter Alex South in Natal: "The rain isn't dampening the mood of the Mexican fans in Natal. Full wrestling gear as they take over the Arena dos Dunas. Around 80% of the stadium will be filled with Mexican fans."

Conditions could hardly have been much better for yesterday's World Cup opener, with the sky above the Arena de Sao Paulo a brilliant blue.

The same can't be said for today's fixture at the Estadio das Dunas in Natal, however, where it has been hammering it down for the last few hours. Still, it has not dampened the spirits of those on the way to the game....

Image source, Getty Images

If, somehow, you have made it this far into the second day of the World Cup and are not aware of what happened in yesterday's opening match between Brazil and Croatia, then let me provide a little recap.

After an opening ceremony involving walking flowers, men dressed as trees on stilts and Jennifer Lopez singing with rapper Pitbull, the first of 64 games kicked off in frenetic fashion.

A Marcelo own goal gave Croatia a surprise lead but Brazil roared back as Neymar equalised before converting a controversial penalty. Chelsea's Oscar wrapped up a 3-1 win in stoppage time.

Don't just rely on my words, though, because you can get all the best action from day one in under 10 minutes with Match of the Day's World Cup Catch-Up on the BBC Sport website.

Knives and forks at the ready? Because there is plenty for us to tuck into today.

After Brazil, and namely Neymar, served up a feast of goals complimented with a side order of controversy, it is a veritable three-course meal of football action today.

For starters, two-times quarter-finalists Mexico take on Cameroon before a recreation of the 2010 World Cup final acts as the main course, when world champions Spain come up against the Netherlands (20:00 BST).

Finally, our late-night dessert sees Chile and Australia go head-to-head (23:00 BST). Sumptuous stuff.

Image source, Getty Images

The official song has been sung, the celebratory ticker tape has been swept off the streets and sore heads have been nursed. Now it is time for the rest of the world to get in on the action.

Hosts Brazil kicked off the 2014 Fifa World Cup with both a thrilling and controversial 3-1 victory against Croatia yesterday, and for the next two weeks there will be at least three games a day as the 32 teams battle it out for a place in the knockout stage.

Heroes will be born, villains will be found and history will be made.

Are we all set?