In the reported Champions League-adjacent football results from mid-September 2026, Barcelona re-established a three-point lead over Real Madrid after a heavy win against which club?

Explanation: Barcelona re-established a three-point advantage over Real Madrid in Spanish football with what was described as "an avalanche of goals" against Racing, after Real Madrid had earlier pulled level with the Catalan club. Such results feed into the season-long title race narrative in La Liga, one of European football's most closely followed domestic competitions, with Barcelona and Real Madrid's rivalry consistently drawing global sporting attention throughout the campaign.