Fifteen-year-old winger Lamine Yamal became Barcelona's youngest-ever player as they beat 10-man Real Betis to move 11 points clear at the top of La Liga.
The academy product, who turns 16 in July, was brought on in the 84th minute to replace Gavi.
At 15 years and 290 days, Yamal is the fifth-youngest player to appear in the competition.
Mallorca youngster Luka Romero is the youngest player to feature in La Liga when he came on against Real Madrid in 2020, aged 15 years and 219 days.
Yamal, who Barca boss Xavi Hernandez called "fearless", was included in the squad for the first time against Atletico Madrid last Sunday.
Betis winger Joaquin, 41, who also featured at the Nou Camp on Saturday, had already made 215 La Liga appearances when Yamal was born.
