PARIS (AP) Paris Saint-Germain's quest for a fourth straight title is looking so comfortable that the talk is centering on how many domestic records it might break.

In PSG's 4-1 win over Saint-Etienne last weekend at Parc des Princes, the visitors came to attack but spent almost the entire match defending.

PSG is unbeaten in 15 matches this season in all competitions, scoring in every game except last week's 0-0 home draw against Real Madrid in the group stage of the Champions League.

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Including last season, when it finished with seven straight league wins, PSG's unbeaten run stretches to 22 games. The team has not lost since falling 2-0 at Barcelona in the quarterfinals of the Champions League on April 21, and has failed to score only twice in 23 matches.

But those two scoreless matches, against Barcelona and Real Madrid, are significant because they perfectly illustrate the team's limitations. Lacking opposition in the French league, PSG poses less of an attacking threat on Europe's biggest stage.

PSG desperately needs a rival in France, but after 11 matches, seven-time French champion Lyon is already 10 points behind, while nine-time champion Marseille is 17 points adrift.

The teams currently sitting seven and eight points behind in second and third place, respectively, are newly-promoted Angers and Caen - and they have neither the funds nor squad depth to compete.

Here are some things to know about this weekend's games:

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AGING IBRA?

Strikers are supposed to fade the older they get, but Zlatan Ibrahimovic could be getting better.

After an injury-plagued season restricted him to 19 league goals in 24 games, the 34-year-old Swede has seven goals in seven league games so far, keeping him on track to beat his career best of 30.

He is PSG's all-time leading scorer with 113 goals in 140 matches.

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RECORD BREAKERS?

Paris Saint-Germain is eyeing six domestic records.

It has not lost in the French league since March 15 - a run of 20 league games - but Nantes holds the record with 32 during the 1994-95 season.

PSG will be confident of surpassing Lyon's 17-point winning margin from the 2006-07 campaign, and of beating its own league points record of 89 set two seasons ago.

It has won five straight games but is some way short of Bordeaux's 11 straight wins at the end of the 2008-09 season.

PSG remains on course to beat the French league record of 12 away wins in a season, but topping the 118 goals scored by RC Paris in 1959-60 remains a long shot.

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STANDING OUT

Belgium striker Michy Batshuayi has excelled amid Marseille's turbulent season.

He is the league's top scorer with eight goals - one more than Paris Saint-Germain star Zlatan Ibrahimovic - and will look to score for the sixth straight league game when Marseille travels to Nantes on Sunday.

When Andre-Pierre Gignac left in the offseason, having scored 21 goals for Marseille, questions were raised whether the 22-year-old Batshuayi could step up.

The question now is whether Marseille will be able to keep him.

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WATCH YOUR MOUTH

Lille coach Herve Renard will have to watch what he says next after landing himself in trouble.

Renard, who coached Zambia and Ivory Coast to African Cup titles, said in a newspaper interview last week that he'd like to coach Marseille one day, and that Lille was merely ''a springboard'' toward bigger things.

Those comments came just before Lille lost at home last weekend - to Marseille.

It earned Renard a rebuke from president Michel Seydoux, who reminded the ambitious coach that his Lille side is in 15th place.

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HOPE FOR HATEM

Hatem Ben Arfa's scintillating form for Nice this season has caught the eye of France coach Didier Deschamps.

Ben Arfa's seven goals in 10 games - including one brilliant solo goal - have thrust him into the spotlight.

His international career seemed over following a dire performance in a 2-0 loss to Sweden in the 2012 European Championship. But Deschamps, who coached Ben Afra at Marseille, will name his squad next Thursday for an upcoming friendly against Germany and hinted that the 28-year-old winger could add to his 13 international appearances.

''Why not?'' Deschamps told Eurosport. ''I can only encourage him to maintain his level of performance.''