Nancy wrapped up their Ligue 1 campaign with a thrilling performance against Lens, on a night when they could have been relegated.
Pablo Correa`s men went into one of the most complicated and nail-biting final days in recent memory knowing that they were one of a host of sides that could have fallen through the trapdoor into the second tier.
But, with Monaco losing at home to Lyon, the matter was resolved anyway, not that Nancy knew.
They were 3-0 ahead by the time Monaco`s fate was finally decided, with Pascal Berenguer (two) and Bakaye Traore doing the damage, while Marama Vahirua started the party with a last-ditch strike.
With Lens having already been relegated, they were never expected to offer much and Nancy bossed things from the off, with Youssouf Hadji going close with an early volley.
Berengeur`s opener came after 29 minutes, taking a free-kick from outside the area and drilling into the top corner after his initial effort had hit the wall.
It was the pressure-reliever Nancy needed and Traore added to their joy on the stroke of half-time when he lobbed Hamdi Kasraoui after a fine counter-attack.
Nancy`s job was almost done and it was completed when Berenguer netted his second four minutes after the break.
Hadji crossed for the midfielder who swept home in one movement to delight a home crowd of close to 20,000.
As news of Monaco`s demise filtered through Lens had a chance when Serge Aurier fired wide, but it mattered little and Vahirua linked up with Jordan Loties to make it four in the second minute of time added on.