Reigning champions Nigeria thrashed hosts Chile 5-1 to book their place in the last 16 of the Under-17 World Cup.
Samuel Chukwueze and Victor Osimhen both scored twice for the Golden Eaglets, with Kelechi Nwakali also getting himself on the scoresheet.
Chile conceded two of the goals from the penalty spot - while Nigeria failed with a third penalty - and also had Funsho Bamgboye sent off.
The hosts' lone goal was scored by Marcelo Allende.
Nigeria join South Korea in the last 16, with Chile set to face United States in a crunch match at the Estadio Sausalito on Friday.