Goncalo Ramos converted a penalty with the last kick of the game to give Paris-Saint Germain a 1-1 home draw against bogey side Rennes on Sunday.
Brest are second in Ligue 1, 11 points back, after beating Strasbourg 3-0 on Saturday.
Monaco jumped to third, two points further behind, on Sunday when Japan striker Takumi Minamino scored in the second minute of added time to give them a last-gasp 3-2 win at Lens.
Also on Sunday, Nice drew 0-0 at home with bottom-club Clermont and are a point behind in fourth. Lille lost 3-1 at Toulouse and are fifth.
Rennes, who beat AC Milan in the Europa League on Thursday, rested Benjamin Bourigeaud, scorer of a hat-trick against the Italians, and Martin Terrier.
They still took the lead when Amine Gouiri fired a shot into the top corner in the 39th minute.
PSG took off star striker Kylian Mbappe after an hour.
As the home side pressed desperately for an equaliser in added time, Ramos was booked for diving in an attempt to win a penalty. Moments later, he plunged over goalkeeper Steve Mandanda.
This time a video review went in favour of the Portuguese striker, who converted the spot kick to save PSG's two unbeaten runs: 18 games in Ligue 1 going back to September and 19 in all competitions since October.
The victory also saved PSG from losing at home to Rennes for a second straight season. The Breton club have beaten PSG seven times since the Qatari takeover in 2011. No other French team has more victories over the Parisians in that time.
In Lens, United States international Folarin Balogun put Monaco ahead after just 19 minutes. Minamino then doubled the lead on the half-hour.
Lens struck back immediately through Elye Wahi. Wesley Said levelled in the 77th minute.
The hosts, who lost at Freiburg in
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