Lens pressed from the start of the second half and took possession deep in the PSG half in the 48th minute.
The ball reached Openda in the box, his back heel leaving the defense flat and allowing Alexis Claude Maurice to touch and score from close range.
The French league usually kicks off the season for the holidays, but with matches after the World Cup, it played one round immediately after Christmas and the second round on Sunday and Monday.
They have dubbed the games ‘Celebration Week’ in English as a nod to the English tradition of Boxing Day games, but many fans are suspicious or hostile.
Among the protest banners unfurled by fans in the nearly empty stands in Nantes, where the home team beat Auxerre 1–0, one of them complained that the league and the broadcaster were “killing” them.