Toulouse returned to the summit of the Top 14 rankings on Sunday with a 38-23 home win against Stade Francais despite missing Antoine Dupont after the star scrum-half's late withdrawal through sickness.
The reigning double champions took back top spot from Bordeaux-Begles and claimed the title of "autumn champions" as the French league reached its midway point.
First-half tries from Julien Marchand and Paul Graou gave Toulouse a 14-6 lead at the break against their Parisian opponents.
France international fly-half Romain Ntamack scored his first try of the campaign shortly before the hour as Toulouse then fought on to earn a bonus point win thanks to two further tries by hooker Peato Mauvaka.
Bordeaux-Begles had gone top on Saturday with a 21-17 win over third-placed Toulon, which took them to 45 points.
But Toulouse's bonus-point win moved them one point clear of the southwestern rivals after 13 rounds of the 26-match season.
Elsewhere on Sunday, Racing 92 were held to a 25-25 draw with 13th-placed Lyon and Perpignan beat La Rochelle 21-13.
