Behind every world powerhouse is a great manager.
Managers don't always receive as much attention as their players but that doesn't make them any less important.
From selection to tactics to substitutions, managers have to take risks and have the final say in make or break decisions.
When they fail, managers are the first to get blamed and when they succeed, they are the last to get the credit.
In no particular oder, these are the managers who can get the most out of their teams in next month's World Cup.