In injury time, an accidental collision between the Lens goalkeeper, Vachoux, and his defender Fortes not only meant the 3-1 goal which sealed Dijon's Ligue 1 survival, but it also left the footballer unconscious and he had to go off immobilised on a stretcher. His teammates were visibly shaken by the incident.
Ajaccio have a mountain to climb in the second leg of their play-off against Toulouse, with another season in Ligue 2 looking likely.
Ajaccio have been ordered to play their Ligue 1 playoff against rivals Toulouse in an empty stadium following ugly scenes at Ajaccio's recent game against Le Havre.
The French second-division playoff between Ajaccio and Le Havre that was postponed after fans of the Corsican club attacked the visitors' team bus has been rescheduled for Sunday.
After Ajaccio supporters attacked the Le Havre team coach, the Ligue 2 promotion play-off was postponed on Friday.
Troyes hold a 2-1 lead from the first leg of the Ligue 1 relegation play-off thanks to Benjamin Nivet's late goal against Lorient.