4 clubs of the longest unbeaten run series in "Big 5" this season

 
4 clubs in the five major European leagues, "Big 5", have so far maintained their unbeaten record in Europe's current “BIG 5” Leagues., after passing the first half of the first round of the various tournaments.
In the Spanish League, Real Madrid, the defending champion, is the only longest unbeaten run in football after 9 rounds of the competition, giving Barcelona its first loss in the Clasico match 3-1, achieving 8 victories and a single draw.
In Italy, Napoli and Atlanta are still unbeaten, after 10 rounds of the Calcio, after the strong levels presented by the duo in the competition during the current season, which made them lead the title race by occupying the first places in the standings.
In France, Paris Saint-Germain remained the only club that was unbeaten during the current season, after 11 rounds of the competition's series, winning 9 matches and drawing two matches.