The Coach Manu Garba-led Flying Eagles started its 2015 U-20 Fifa World Cup campaign with a defeat.
They lost 2-4 to the Brazilians in their opening game played in Taranaki in New Plymouth, New Zealand.
Brazil opened scoring in the 4th minute. The South Americans also scored in the 35th, 60th, and the 80th minutes. Nigeria scored in the 11th and 27th minutes.
The Flying Eagles have been beaten finalists at the 1989 and 2005 tournaments and have qualified for this competition without a break for the past 10 years.