Lamine Yamal, a 15-year-old winger, became the youngest player in Barcelona history as they defeated Real Betis with 10 men to extend their lead atop the La Liga standings to 11 points.
The academy graduate, who will be 16 in July, was substituted in for Gavi in the 84th minute.
Yamal is the fifth-youngest participant in the competition at 15 years and 290 days.
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The victory was secured by goals from Andreas Christensen, Robert Lewandowski, Raphinha, and an own goal by Guido Rodriguez.
Luka Romero, a teenager from Mallorca, made his La Liga debut against Real Madrid in 2020 at the age of 15 years and 219 days, making him the league’s youngest player ever.
The “fearless” Yamal, who Barca manager Xavi referred to, was selected for the first time against Atletico Madrid last Sunday.
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When Yamal was born, Betis winger Joaquin, 41, had already played in 215 La Liga games. He also appeared at the Nou Camp on Saturday.
Christensen scored his first goal for the club from six yards out after receiving the ball from Raphinha’s inswinging cross.
In the 33rd minute, Luiz Felipe’s replacement at Betis, Edgar Gonzalez, was dismissed after receiving two yellow cards in rapid succession.
A Jules Kounde pass resulted in a Lewandowski goal three minutes later, extending the hosts’ lead.
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Before halftime, Raphinha added a third goal after a protracted video assistant referee review after the goal was initially disallowed for offside.
The outcome was then sealed in the 82nd minute when Betis defender Rodrguez diverted a cross from Ansu Fati into his own net.