Will emotional frailty cost Neymar-led Brazilians the World Cup in Russia?

Brazil look to build on their morale-boosting 2-0 win over Costa Rica and seal a berth in the knockout stages but the emotional fragility among the players is alarming

Brazil's inability to keep their emotions in check contributed to a spectacular 7-1 implosion at the 2014 World Cup, so the common fear back in Rio is that once again the pressure might prove too much for the Selecaos in Russia.

The enduring image of the 2-0 win over Costa Rica in Saint Petersburg last Friday was Neymar's tears at full-time after he scored the goal that clinched the victory.

The world's most expensive player is carrying the footballing nation on his shoulders, and only recently returned from three months out after a foot operation.

However, seeing Neymar cry also