PSG pegged the gap on Ligue 1 leaders Lyon at two points without even playing as the league leaders lost 2-1 at Lille.
Lille produced a spirited second-half fightback to stun Ligue 1 leaders Lyon 2-1.
Bastia's sensational form continued as they came from a goal down to beat Lille 2-1 on Saturday.
Nice had to settle for a 0-0 draw in Ligue 1 despite having a man advantage for more than half the match against Lille.
Lille claimed an overdue Ligue 1 victory by ending Montpellier's four-match unbeaten run with a 2-1 triumph.
Abdoulay Diaby has signed a contract extension with Lille after returning from his loan at Belgian side Mouscron.
Live only on