A Paris Saint-Germain side missing Lionel Messi and Neymar suffered their first defeat of the season as they lost 3-1 to nearest Ligue 1 rivals Lens.With their Argentinian World Cup winner still to return from celebrations in his homeland and Neymar serving a ban for his red card on Wednesday, it was left to Kylian Mbappe, as the one star forward present, to lead the line.But even he was upstaged as it was Hugo Ekitike who scored PSG's early equaliser to cancel out Przemyslaw Frankowski's fifth-minute opener.However, that was not enough to stop second-placed Lens as further goals from Lois Openda and, early in the second half, Alex Claude-Maurice saw the home side cut PSG's lead at the top to just four points.Monaco moved into fourth place with a 1-0 win at home to Brest courtesy of Aleksandr Golovin's 54th-minute goal.Lyon's stuttering form continues post-World Cup as the seventh-placed side lost 1-0 to Clermont after midfielder Muhammed-Cham Saracevic's converted an 87th-minute penalty.