Yusuf Demir became the youngest foreign player to feature for Barcelona in La Liga since Lionel Messi on Saturday.
The Austria international replaced Martin Braithwaite shortly after the hour mark of the Blaugrana's 1-1 draw with Athletic Club.
It is the first time the winger has featured for the Catalan side since joining this summer.
What has happened?
At 18 years and 80 days old, he is the youngest non-Spanish player to represent the Camp Nou side in La Liga in almost 17 years.
Barca icon Messi was the previous youngest, having made his top-flight debut for the club in October 2004 at the age of 17 years and 114 days.