Souleymane Camara scored five minutes from time as Montpellier secured a thoroughly deserved win against a woeful Paris Saint-Germain.
Thomas Tuchel admires how much Neymar hates to lose as the controversy over his post-Coupe de France final confrontation continues.
Sofiane Guitoune's 77th-minute try carried Toulouse past Clermont Auvergne as the top two in the table served up a Sunday treat.
Toulon may have been at a numerical disadvantage for most of the second half but they still managed to defeat Top 14 leaders Toulouse.
Tries from Carl Fearns, Mickael Ivaldi and Thibaut Regard helped Lyon get back to winning ways in Saturday's Top 14 action.
There were big wins for 2017-18 Top 14 finalists Castres and Montpellier on Saturday, with Benjamin Urdapilleta inspiring.
Toulouse's lead in the Top 14 table is down to a solitary point after Clermont Auvergne thrashed Grenoble. Lyon, meanwhile, lost at home.
Zack Holmes scored 15 points as Toulouse extended their lead at the Top 14 summit, while Stade Francais boosted their play-off hopes.
Paris Saint-Germain scored five goals in their Ligue 1 victory but head coach Thomas Tuchel was still not completely satisfied.
Angel Di Maria scored with a superb curling free-kick from 30 yards as Paris Saint-Germain beat Montpellier 5-1 at Parc des Princes.