Leaders Paris St Germain wasted a two-goal halftime lead as they lost 3-2 at Monaco in Ligue 1 on Friday before an essential Champions League game against RB Leipzig.
Kylian Mbappe's dual was cancelled away by several goals from Kevin Volland before Cesc Fabregas gave the hosts all 3 points with a penalty six minutes from time.
Monaco are actually second found in the standings with 20 points from 11 game titles, four behind PSG, who web host Leipzig found in Group H on Tuesday trailing the German area and Manchester United by 3 points.
Centre again Abdou Diallo, who fouled Volland for Monaco's penalty, was sent off.
Mbappe, rear with PSG since picking up a thigh damage against Nantes on Oct. 31, struck first in the 25th minute with a go into the top corner.
He doubled the tally 12 minutes soon after from the penalty spot after Rafinha was brought down by Youssouf Fofana.
Moise Kean was first denied PSG's third by the Video recording Assistant Referee (VAR) to be within an offside position two a few minutes later.
It was referee Clement Turpin who then denied Mbappe his third aim for being offside one minute prior to the break.
Monaco raised their level following the interval and Volland reduced the arrears in the 52nd minute with a go from close range.
The momentum had swung and Volland levelled in the 66th, again from close range between Fabregas's cross.
The Spanish midfielder then coolly converted the winning penalty.
Before, Stade Rennais slumped to a 1-0 home defeat simply by Girondins de Bordeaux, four days and nights before hosting Chelsea found in the Champions League.
Bordeaux prevailed through a good first-half target by Hatem Ben Arfa due to Rennes, who desire to revive their expectations found in Group E against the London club on Tuesday, slipped right down to fifth in the group standings on 18 points.
Ben Arfa danced around 3 Rennes defender before beating Alfred Gomis with a minimal shot from just in the box nine minutes before the break.
The result put Bordeaux up to 11th on 15 points.