Francisco Javier García Pimienta, the Barca B coach, wrote on Twitter to congratulate Oscar Mingueza for his debut with the first team.
The Catalan coach was proud to see the centre back feature against Kiev in the Champions League.
"Debut of Mingueza!" he wrote in Catalan. "He since he was eight, this is a prize for patience and consistency. Congratulations Oscar!"
Mingueza has been a Barca player for 13 years and this is his third under Garcia Pimienta.