PSG restored their three-point cushion at the top of the table in Ligue 1 on Sunday, while Valenciennes and Rennes enjoyed home victories.
Kevin Gameiro struck a hat-trick as Paris St Germain pulled ahead once more at the top of Ligue 1 with an impressive 3-1 win at struggling Ajaccio.
France international Gameiro was one of several big-money signings for PSG over the summer and repaid a large chunk of his transfer fee with a treble which proved too much for the Corsican hosts.
Gameiro's first-minute opener was cancelled out by Carl Medjani but the former Lorient man had the final say.
Valenciennes earned their second Ligue 1 win of the season and climbed out of the bottom three with a convincing 3-0 win against Sochaux at the Stade du Hainaut.
Vincent Aboubakar scored in each half with Foued Kadir also finding the back of the net to send Sochaux to their fourth defeat of the season.
In Sunday's late game, Rennes leapfrogged Lorient in the standings with a 2-0 home win at the Route de Lorient.
Kembo Ekoko opened the scoring for the hosts in the 10th minute before Jonathan Pitroipa doubled their lead in the second half.
The win sees Rennes climb the table into fifth, while Lorient drop a place into seventh.