Bolivia have played 92 World Cup qualifiers away from home. They won 4.
At home they win almost half. The reason is 3,600 metres above sea level: La Paz.
In 2009 they beat Argentina 6-1. At home they have beaten Argentina or Brazil 9 times in qualifiers. Away: never.
Points per game at home: 1.72. Away: 0.25. No national team with at least 60 home and 60 away qualifiers has a bigger gap.
Some teams have a twelfth man. Bolivia have a mountain.