Aguirre made it clear that mental toughness will be a key factor in determining who earns a place on his World Cup roster.
“You either handle the pressure, or you don’t belong here,” the Mexican coach said. "The ones who can’t take the heat don’t have the strength to play in a World Cup. A World Cup in Mexico is the best thing that could happen to them. I don’t use social media, but these guys do - they see the criticism, and if they can’t block out the noise, they can’t be here.
"They’re the protagonists, they’re the ones getting paid to perform, and they have to prove why they deserve to wear this jersey."