Mark Sanchez is now facing a lawsuit stemming from Saturday's stabbing incident ... with the alleged victim targeting both the former quarterback and his employer.
The docs were filed on Monday ... with delivery driver Perry Tole suing Sanchez for assault/battery and Fox for negligent hiring, retention and supervision.
In the suit, Tole states Sanchez appeared intoxicated and instigated an altercation the night of the alleged attack ... and claims he suffered severe permanent disfigurement, loss of function, other physical injuries, emotional distress and other damages in the violent incident.