Reigning champions Paris Saint-Germain eased to a 2-0 win against Corsican minnows Gazelec Ajaccio to maintain their perfect start to the Ligue 1 season on Sunday after Marseille slumped to another defeat.

A stunning Blaise Matuidi strike and a Thiago Silva header, both in the first half, put PSG out of sight against newly-promoted Gazelec at the Parc des Princes and left Laurent Blanc's side with six points from a possible six at the start of the new campaign.

Argentina winger Angel di Maria, the 63 million-euro (£44.3m; $68.9m) signing from Manchester United, was introduced to the Paris fans before kick-off, although he was not yet fit enough to make his debut.

And with Zlatan Ibrahimovic again sidelined, PSG were not at full strength, as 18-year-old forward Jean-Kevin Augustin was handed a first start in the top flight.

But this was always likely to be a trying night for Gazelec, a club whose overall budget for their debut season at the top level barely equates to Ibrahimovic's annual salary at the Parc des Princes.

It always seemed a question of when, not if, Paris would open the scoring and they duly did so in the 11th minute thanks to Matuidi, the France midfielder taking the ball into the box and then sending a fizzing left-foot drive high into the net from a tightening angle.

PSG added their second goal just before the midway point in the first half, captain Silva putting the disappointment of being dropped from the Brazil squad last week behind him as he headed home from a Thiago Motta corner.

At that point it looked like turning into a rout, but Edinson Cavani failed to convert several openings in the second half and Serge Aurier headed a great chance wide.

David Luiz was denied by a brilliant Clement Maury save as the hosts settled for a win that leaves them, ominously, already in top spot on goal difference.

Earlier on Sunday, Marseille slumped to a second defeat in as many games, a first-half strike by Hamari Traore giving Reims all three points in a 1-0 win in Champagne country.

Marseille, still reeling from the shock resignation of coach Marcelo Bielsa following their opening 1-0 defeat to Caen, never really looked like scoring and find themselves in the relegation zone in the fledgling standings.

Bielsa's former assistant Franck Passi took charge of the away side in Reims but he insisted the Argentine's departure could not be used as an excuse for a disappointing display.

"We have to stop talking about trauma! We've put last weekend (Bielsa's resignation) behind us," said Passi.

"We mustn't hide behind that excuse. But it's clear that it will not be easy and it will take time to find a solution."

In contrast to OM, it has been a great start to the season for Reims, who had already beaten Bordeaux on the opening weekend.

Sunday's other match saw Lorient scramble a 1-1 draw at home to Bastia thanks to a stoppage-time Benjamin Moukandjo penalty, which cancelled out Floyd Ayite's early opener.

Mathieu Valbuena made his Lyon debut in a 1-0 win at Guingamp on Saturday as Claudio Beauvue netted the only goal of the game against his old club.

Rennes and Caen were the weekend's other winners, while Monaco warmed up for their Champions League play-off first leg away to Valencia in midweek by drawing 0-0 at home to Lille on Friday.

It was a trying night for the principality club, who lost influential midfielder Joao Moutinho to an ankle injury that will keep him out for up to six weeks.