Radamel Falcao scored twice as Monaco comfortably reclaimed their place at the head of the Ligue 1 standings with a routine 3-0 win over Bastia at Stade Louis II.
Falcao struck late in either half and Emmanuel Riviere was also on target as the unbeaten principality club made it five wins from seven at the start of the new campaign.
The result also means Falcao and Riviere remain Monaco's only goalscorers in the league this season, with the lethal duo combining for 13 goals so far.
The win sees Claudio Ranieri's troops maintain their two-point lead over champions Paris St Germain at the summit, with Marseille - who moved top after defeating St Etienne on Tuesday - bumped back to third.
Zlatan Ibrahimovic set up the winning goal for strike partner Edinson Cavani as Paris Saint-Germain's scrappy 1-0 win at Valenciennes kept the pressure on Monaco.
The champions are unbeaten in their title defence but have been held three times, with Cavani's strike in first-half injury-time getting them back to winning ways after Sunday's draw with fellow pace-setters Monaco.
Valenciennes kept PSG at bay for almost the entire first half but Laurent Blanc's men took the lead in the dying stages.
Zlatan Ibrahimovic was the creator and he released Cavani into the right side of the area where the former Napoli striker did the rest, finishing confidently across Nicolas Penneteau.
The home side almost grabbed an equaliser straight after the restart as Lindsay Rose met a corner with a powerful header but Marco Verratti was on the line to clear.
With just a minute remaining Valenciennes had another chance as Mathieu Dossevi beat Lucas Digne on the right and found Anthony Le Tallec totally unmarked in front of goal but the former Liverpool man could not get the ball out of his feet and PSG survived.
Valenciennes manager Daniel Sanchez was given a vote of confidence by club president Jean-Raymond Legrand on Wednesday afternoon but that will come as little consolation after he saw his side slip to a sixth consecutive defeat.
Ajaccio shocked Lyon 2-1 to move out of the relegation zone. Lyon had bounced back from a six-game winless run to beat Nantes on Sunday but fell behind to midfielder Salim Arrache's goal in the 18th minute.
Veteran midfielder Steed Malbranque drew Lyon level in the second half, only for 18-year-old forward Aboubacar Demba Camara to score Ajaccio's winner with 20 minutes remaining. Lyon then had Alexandre Lacazette dismissed in the fifth minute of injury time.
Nantes defeated Nice 2-0 to move up to ninth place with goals from Serbia striker Filip Djordjevic and Fernando Aristeguieta.
Denmark forward Martin Braithwaite grabbed a late winner for Toulouse in a 1-0 victory against Lorient.
Midfielders Christophe Mandanne and Claudio Beauvue put Guingamp in control in a 5-1 win against struggling Sochaux, who have yet to win a game and remain bottom of the table.
Right back Fatih Atik made it 3-0 before the break, striker Cedric Bakambu pulled one back for Sochaux but midfielders Younousse Sankhare and Steven Langil added further goals for the home side.
Sochaux coach Eric Hely offered his resignation in the aftermath of the loss.
Bordeaux and Reims played to a 0-0 draw as Bordeaux dropped down into 18th place.