Striker Mario Balotelli scored twice on his debut to inspire Nice to a 3-2 win over Marseille.
The Italy international, a deadline day free transfer from Liverpool, struck after just seven minutes with a penalty – his first league goal since September 22 last year.
Balotelli added a second 12 minutes from time after the visitors had taken the lead through Florian Thauvin and Bafetimbi Gomis before Wylan Cyprien snatched victory in the 87th minute.