The Sang et Or (3rd, 14 points) find themselves two lengths behind PSG and OM, just ahead of Lyon (4th, 13 pts), who all three won on Saturday.
Racing Club de Lens still had the energy to equalize in numerical inferiority, in a duel of scorers.
The infernal Englishman Folarin Balogun, on loan from Arsenal, scored his fifth goal since arriving in Champagne (70th).
But the Belgian Loïs Openda responded with his fourth goal of the season (81st). However the Lensois Deiver Machado had been excluded (66th) for a fault in the position of last defender on the Japanese Junya Ito. The Colombian had just entered the game, barely four minutes earlier…
The good operations in the standings are carried out by Lille (5th, 10 pts) and Lorient (6th, 10 pts).
Losc won in Montpellier (3-1), reduced to ten just after half-time with the exclusion of Valère Germain. Canadian Jonathan David scored twice (41st, 90th 5).
The “Merlus” won in Ajaccio (1-0), which remains last with only one point.
Lille and Lorient distance Rennes (9th, 8 pts), held in check at Troyes (1-1) despite a numerical superiority of more than an hour, following the red inflicted on Yoann Salmier for a sole on Lovro Majer (26th ).
Estac, who had opened the scoring by Iké Ugbo (13th), was joined on a goal by Baptiste Santamaria (47th).
Another Breton club, Brest failed to beat Strasbourg (1-1) also playing for more than an hour at eleven against ten, after the exclusion of Sanjin Prcic for a sole on Hugo Magnetti (30th).
Alsatian coach Julien Stephan also saw red (second yellow, 44th) for protest.
The day ends Sunday evening (9:00 p.m.) with the Riviera derby between Nice (14th) and Monaco (16th), poorly ranked, just above the waterline of the four relegated.