PSG settles for disappointing draw
Despite dominating from start to finish Laurent Blanc's champions were left frustrated not to get a win after Benoit Pedretti had given the visitors an early lead with a wonder goal. A draw for PSG leaves them winless after two games and already four points off the leading pack while Ajaccio gained their first point of the season.
Newly-promoted Nantes defeated Bastia 2-0 in their opening match and were on course for another successful outing after taking a 17th-minute lead through Olivier Veigneau.
However, they were left empty-handed as Lorient drew level before the break thanks to Vincent Aboubakar and then snatched a 61st-minute winner through Jeremie Aliadiere's unstoppable free-kick.
Radamel Falcao opened the scoring from the penalty spot early in the first half before Ranieri's men were pegged back thanks to a Victor Hugo Montano effort.
Riviere put Monaco back in front just before the break, though, and the former Toulouse striker scored twice more in the second half - either side of a red card for Montpellier defender Daniel Congre for a foul on Yannick Ferreira Carrasco - to wrap up the points.