Robert Lewandowski scored twice and Lamine Yamal added a third to ruin Kylian Mbappé's first Clasico as Barcelona cruised to a 4-0 win over Real Madrid on Saturday.

Lewandowski scored in the 54th minute after a great pass from Barcelona's newest young talent Marc Casadó and headed the second goal three minutes later to silence the Santiago Bernabéu Stadium.

Overall, the Polish striker scored goals 16 and 17 this season, taking his best tally in the league to 14. He also hit the post.

Yamal was denied in the 77th minute when the 17-year-old phenom fired a shot from an angle over goalkeeper Andriy Lunin to become the youngest Clásico goalscorer. Raphinha joined the burgundy and blue party when he broke free as Madrid pushed forward and Lunin saved in the 84th minute.

Mbappé had a frustrating first game against Barcelona in the white jersey.

The French star was repeatedly found offside by Barcelona's synchronized back four and failed to beat backup goalkeeper Iñaki Peña one-on-one as his side trailed by two goals.

Meanwhile, Hansi Flick had a memorable night in the first Clásico for the German coach.

Barcelona have opened up a six-point lead at the top of LaLiga after 11 rounds over second-placed Madrid.

After four consecutive Clásico defeats, the Catalans celebrated their first triumph over Madrid since March 2023 with a clinical performance in which they stayed true to coach Flick's ideas of playing with an aggressively high defense.

“We had a difficult week with difficult games, but we knew how to get out of it. We played a great game,” said Casadó, an unknown substitute until Flick picked him as his defensive midfielder, after his impressive display.

Casadó was one of five homegrown players Flick included in his starting XI, the same XI that defeated Bayern Munich 4-1 in the Champions League three days earlier. A total of six players under the age of 22 started for Barcelona, ​​led by 17-year-olds Yamal and Pau Cubarsí, and were not intimidated by the scenario.

Yamal outshone Mbappé this summer as Spain beat France en route to winning the European Championships, and he did it again as he showed the finishing touch Mbappé lacked. To top it off, he scored his beautiful goal with his supposedly “not so good” right foot.

Mbappé was judged offside five times in the first half hour as Barcelona pressed hard. Vinícius Júnior, who had a fascinating duel with Cubarsí, wasted a golden chance in the 21st minute when he shot past the post from close range.

Peña was asked if he was up to the task of replacing Marc-André ter Stegen, who is out long-term with a knee injury. His strong performance, which included two saves on Mbappé, was his first great game in goal for Barcelona.

“Our coach said playing a high defensive line was non-negotiable,” Peña said. “It is risky to play with such a high defensive line, but the effort and work of the entire team is reflected in the offside traps we create.”

Raphinha's goal confirmed his huge progress under Flick. The Brazilian striker, who captained Barcelona, ​​has scored 10 goals this season.

Information from the Associated Press and Reuters contributed to this report.