Barcelona took a huge step Sunday to securing the Spanish league title with a 4-3 win over Real Madrid — despite Kylian Mbappé’s hat trick in a mesmerizing “clasico” — and opened a seven-point lead over its second-placed rival with three matches remaining.

Barcelona took a huge step Sunday to securing the Spanish league title with a 4-3 win over Real Madrid — despite Kylian Mbappe’s hat trick in a mesmerizing “Clasico” — and opened a seven-point lead over its second-placed rival with three matches remaining.