Estevao Willian became the third teenager to score in each of his first three Champions League starts after Kylian Mbappe and Erling Haaland
It was billed as the battle of the two teenage wonderkids - and for once it was Lamine Yamal who found himself overshadowed, cast aside from the spotlight.
This was Estevao Willian's night.
With Chelsea already 1-0 up and Barcelona down to 10 men, the 18-year-old produced a truly memorable moment to light up an already raucous Stamford Bridge.
Collecting a pass from Reece James, Estevao cut inside, turned Alejandro Balde inside out and then sent a rasping drive into the roof of the net past goalkeeper Joan Garcia.
