LOS ANGELES, United States (AFP) — A classic David versus Goliath encounter will take centre stage at the World Cup on Friday as tiny Cape Verde face Lionel Messi and Argentina with a place in the last 16 at stake. Cape Verde, the smallest nation ever to reach the knockout rounds, face the defending champions in Miami, dreaming of pulling off what would be the greatest upset in World Cup history. The Atlantic archipelago has become one of the fairytale stories of this year's expanded 48-team tournament, confounding expectations by earning a draw with Spain before squeezing into the last 32 ahead of Group H rivals Uruguay and Saudi Arabia.