Brazil's Neymar (front) takes part in a training session for the FIFA World Cup in Teresopolis, Rio de Janeiro, Brazil on Saturday (Brazilian time). Brazil now lead Group A on goal difference after the first two games. They will take on Cameroon in their last group-stage match on Monday in Brasilia. Photo: AFP

Monday kicks off the first of four days of nail-biting 90 minutes running side by side as the group stage wraps up and everyone finds out who could possibly stand between them and immortality.

The teams in Group A have it all to play for as no one is yet through to the knockouts, while those in Group B are playing for pride or position as they try to sort out the order in which they will finish.

Group A's last set of fixtures is played out in the form of Brazil vs. Cameroon and Croatia vs. Mexico.

Brazil will be looking to secure the top spot that everyone predicted them to samba into before the tournament ­began. It's not been that easy so far, but a close victory over Croatia in the competition opener and a frustrating draw with Mexico has put the hosts on four points and the brink of qualification. Once again, everyone expects Brazil to win and Neymar to be the man to inspire the victory. Now is the ideal time for their craque to come good and make the country believe that this could be the year for their sixth crown.

Meanwhile, Cameroon have been utterly without merit. There's no ­sugarcoating it for a squad that was in such disarray they threatened not to ­attend the World Cup. Many of the fans, ­players and backroom staff will have wished they didn't. A needless red card and Benoit Assou-Ekotto headbutting a teammate in the loss to Croatia will have the Indomitable Lions wanting to put Brazil 2014 behind them as soon as possible. They have a chance to do that by putting some goals past Brazil and finishing with some pride if not a point.

Croatia impressed in the initial stages of the opening game before tiring but ran rampant against Cameroon to look a worrying prospect for anyone should they make it through.

Mexico will ­certainly be worried, ­after they played Cameroon off the park they then relied on Ochoa's goalkeeping ­heroics to earn a point off Brazil. This is shaping up to be unmissable, as a win for either side sends them through, perhaps in top spot were Brazil to only draw.

The nightmare scenario for FIFA is that Croatia narrowly beat Mexico and Cameroon shock Brazil with a heavy win. That would knock Brazil out on goal difference and throw the World Cup off its axis.

Group B is as simple as it comes for the final group game. The Netherlands are top and will remain so unless Chile beat them and take top spot and with it the supposedly easier draw for the ­second round. Both teams are capable of winning but there is a chance that they could play out a draw, utilizing the squad and saving their better players for the next round.

Elsewhere, in the Spain vs. Australia match, it's solely for pride.

Xavi and Tim Cahill are also making their World Cup curtain call, and others might be joining them in retiring. This is also a chance for Vicente del Bosque to play some of his enviable bench and begin the task of rebuilding ­Spanish ­soccer. A farewell to the past and a ­possible glimpse of the future, for what is essentially an international friendly this game has everything.

You can't go wrong whichever Group B match you catch.

Personally, I'll be watching both Group B games, as for some reason they are on before Group A, and then ­spending the Brazil game on a flight from Rio to Fortaleza ahead of the Group C finale.

I have a feeling delays may be ­expected.