Teenager valentin barco

Teenager Valentin Barco: Teenager Valentin Barco converted the decisive spot-kick as Argentine giants Boca Juniors advanced to the Copa Libertadores quarterfinals by beating Uruguay's Nacional on penalties.

After a goalless draw in the first leg, Boca made an ideal start to their return fixture when Miguel Merentiel scored in the 12th minute at La Bombonera on Wednesday, Xinhua reported.