Yamal was a constant thorn in Bulgaria's side as La Roja, who were slightly wasteful, rolled over their desperately sorry opponents.
Spain began their World Cup qualifying campaign in thrilling style with a comprehensive 3-0 victory over Bulgaria in Sofia.
First-half goals from Mikel Oyarzabal, Marc Cucurella and Mikel Merino fired La Roja to a comfortable victory, making it just one defeat in the past 70 World Cup qualifiers for the 2010 champions.
But it was 18-year-old Lamine Yamal, marking his 22nd international appearance, who was Spain's prominent attacking threat on right-hand side, displaying the talent and temperament which could earn him the headlines at next year's World Cup.
GOAL rates Spain's players from Vasil Levski National Stadium...